./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_ps3-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_ps3-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 e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 21:18:18,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 21:18:19,010 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 21:18:19,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 21:18:19,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 21:18:19,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 21:18:19,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 21:18:19,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 21:18:19,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 21:18:19,048 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 21:18:19,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 21:18:19,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 21:18:19,049 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 21:18:19,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 21:18:19,051 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 21:18:19,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 21:18:19,052 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 21:18:19,052 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 21:18:19,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 21:18:19,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 21:18:19,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 21:18:19,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 21:18:19,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 21:18:19,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 21:18:19,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 21:18:19,055 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 21:18:19,055 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 21:18:19,056 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 21:18:19,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 21:18:19,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 21:18:19,057 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 21:18:19,057 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 21:18:19,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 21:18:19,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 21:18:19,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:18:19,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 21:18:19,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 21:18:19,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 21:18:19,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 21:18:19,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 21:18:19,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 21:18:19,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 21:18:19,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 21:18:19,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 21:18:19,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b995352c2aa614292d7ca8e2ab060aead2140bac61fbd718d54a02f08e13c4 [2024-10-11 21:18:19,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 21:18:19,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 21:18:19,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 21:18:19,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 21:18:19,344 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 21:18:19,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-10-11 21:18:20,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 21:18:20,954 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 21:18:20,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_ps3-ll.c [2024-10-11 21:18:20,962 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7311a2bbb/72d2687ccf054565b4ca980e997ccbb8/FLAG0dc429385 [2024-10-11 21:18:21,325 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7311a2bbb/72d2687ccf054565b4ca980e997ccbb8 [2024-10-11 21:18:21,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 21:18:21,329 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 21:18:21,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 21:18:21,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 21:18:21,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 21:18:21,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8b42d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21, skipping insertion in model container [2024-10-11 21:18:21,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,361 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 21:18:21,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:18:21,564 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 21:18:21,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:18:21,628 INFO L204 MainTranslator]: Completed translation [2024-10-11 21:18:21,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21 WrapperNode [2024-10-11 21:18:21,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 21:18:21,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 21:18:21,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 21:18:21,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 21:18:21,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,671 INFO L138 Inliner]: procedures = 16, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2024-10-11 21:18:21,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 21:18:21,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 21:18:21,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 21:18:21,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 21:18:21,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,722 INFO L175 MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 4, 5, 17, 2]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 2, 2, 1]. [2024-10-11 21:18:21,722 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,732 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,737 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 21:18:21,745 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 21:18:21,745 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 21:18:21,745 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 21:18:21,746 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (1/1) ... [2024-10-11 21:18:21,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:18:21,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:21,826 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 21:18:21,854 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 21:18:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 21:18:21,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 21:18:21,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 21:18:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 21:18:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 21:18:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 21:18:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 21:18:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 21:18:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 21:18:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 21:18:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 21:18:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-11 21:18:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 21:18:21,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 21:18:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 21:18:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 21:18:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 21:18:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 21:18:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-11 21:18:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_34_0 [2024-10-11 21:18:21,898 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_34_0 [2024-10-11 21:18:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 21:18:21,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 21:18:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 21:18:21,977 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 21:18:21,979 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 21:18:22,543 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2024-10-11 21:18:22,543 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 21:18:22,585 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 21:18:22,585 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 21:18:22,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:18:22 BoogieIcfgContainer [2024-10-11 21:18:22,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 21:18:22,588 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 21:18:22,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 21:18:22,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 21:18:22,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 09:18:21" (1/3) ... [2024-10-11 21:18:22,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba46759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:18:22, skipping insertion in model container [2024-10-11 21:18:22,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:18:21" (2/3) ... [2024-10-11 21:18:22,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba46759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:18:22, skipping insertion in model container [2024-10-11 21:18:22,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:18:22" (3/3) ... [2024-10-11 21:18:22,595 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_ps3-ll.c [2024-10-11 21:18:22,612 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 21:18:22,612 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-10-11 21:18:22,674 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 21:18:22,681 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;@292c81f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 21:18:22,681 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-10-11 21:18:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 55 states have (on average 1.8545454545454545) internal successors, (102), 100 states have internal predecessors, (102), 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 21:18:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 21:18:22,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:22,693 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 21:18:22,694 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:22,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:22,701 INFO L85 PathProgramCache]: Analyzing trace with hash 156150615, now seen corresponding path program 1 times [2024-10-11 21:18:22,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:22,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945771356] [2024-10-11 21:18:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:22,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:23,222 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 21:18:23,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:23,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945771356] [2024-10-11 21:18:23,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945771356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:23,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:23,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:18:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388238499] [2024-10-11 21:18:23,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:23,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:23,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:23,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:23,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:23,255 INFO L87 Difference]: Start difference. First operand has 106 states, 55 states have (on average 1.8545454545454545) internal successors, (102), 100 states have internal predecessors, (102), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 21:18:23,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:23,527 INFO L93 Difference]: Finished difference Result 268 states and 285 transitions. [2024-10-11 21:18:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:23,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 5 [2024-10-11 21:18:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:23,540 INFO L225 Difference]: With dead ends: 268 [2024-10-11 21:18:23,541 INFO L226 Difference]: Without dead ends: 161 [2024-10-11 21:18:23,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:23,551 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 137 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:23,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 447 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:23,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-10-11 21:18:23,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 128. [2024-10-11 21:18:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 77 states have (on average 1.7922077922077921) internal successors, (138), 121 states have internal predecessors, (138), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:18:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2024-10-11 21:18:23,606 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 5 [2024-10-11 21:18:23,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:23,607 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2024-10-11 21:18:23,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 21:18:23,607 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2024-10-11 21:18:23,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 21:18:23,608 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:23,608 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:23,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 21:18:23,608 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:23,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash -263111687, now seen corresponding path program 1 times [2024-10-11 21:18:23,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:23,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220463932] [2024-10-11 21:18:23,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:23,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:23,844 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 21:18:23,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:23,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220463932] [2024-10-11 21:18:23,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220463932] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:23,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:23,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:18:23,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923151814] [2024-10-11 21:18:23,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:23,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:23,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:23,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:23,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:23,849 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 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 21:18:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:24,155 INFO L93 Difference]: Finished difference Result 185 states and 188 transitions. [2024-10-11 21:18:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:24,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 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 21:18:24,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:24,157 INFO L225 Difference]: With dead ends: 185 [2024-10-11 21:18:24,157 INFO L226 Difference]: Without dead ends: 179 [2024-10-11 21:18:24,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 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 21:18:24,159 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 131 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:24,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 379 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-11 21:18:24,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 128. [2024-10-11 21:18:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 77 states have (on average 1.7142857142857142) internal successors, (132), 121 states have internal predecessors, (132), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:18:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2024-10-11 21:18:24,176 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 7 [2024-10-11 21:18:24,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:24,176 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2024-10-11 21:18:24,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 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 21:18:24,176 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2024-10-11 21:18:24,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 21:18:24,177 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:24,177 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:24,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 21:18:24,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:24,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:24,178 INFO L85 PathProgramCache]: Analyzing trace with hash -860934689, now seen corresponding path program 1 times [2024-10-11 21:18:24,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:24,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342686561] [2024-10-11 21:18:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:24,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:24,548 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 21:18:24,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:24,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342686561] [2024-10-11 21:18:24,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342686561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:24,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:24,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:24,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061794950] [2024-10-11 21:18:24,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:24,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:24,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:24,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:24,552 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:25,172 INFO L93 Difference]: Finished difference Result 155 states and 158 transitions. [2024-10-11 21:18:25,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:25,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-11 21:18:25,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:25,175 INFO L225 Difference]: With dead ends: 155 [2024-10-11 21:18:25,178 INFO L226 Difference]: Without dead ends: 154 [2024-10-11 21:18:25,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 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 21:18:25,180 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 109 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:25,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 502 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 21:18:25,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-10-11 21:18:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 128. [2024-10-11 21:18:25,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 121 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:18:25,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 140 transitions. [2024-10-11 21:18:25,192 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 140 transitions. Word has length 13 [2024-10-11 21:18:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:25,192 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 140 transitions. [2024-10-11 21:18:25,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 140 transitions. [2024-10-11 21:18:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 21:18:25,193 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:25,193 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:25,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 21:18:25,194 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_26_to_34_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:25,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash -919171484, now seen corresponding path program 1 times [2024-10-11 21:18:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:25,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812682908] [2024-10-11 21:18:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:25,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:25,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143522605] [2024-10-11 21:18:25,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:25,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:25,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:25,217 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 21:18:25,219 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 21:18:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:25,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 21:18:25,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:25,368 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 21:18:25,375 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 21:18:25,526 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 21:18:25,527 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:25,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:25,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812682908] [2024-10-11 21:18:25,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:25,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143522605] [2024-10-11 21:18:25,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143522605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:25,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:25,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:25,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937829891] [2024-10-11 21:18:25,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:25,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:25,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:25,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:25,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:25,534 INFO L87 Difference]: Start difference. First operand 128 states and 140 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:25,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:25,872 INFO L93 Difference]: Finished difference Result 146 states and 149 transitions. [2024-10-11 21:18:25,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:25,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-11 21:18:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:25,874 INFO L225 Difference]: With dead ends: 146 [2024-10-11 21:18:25,874 INFO L226 Difference]: Without dead ends: 145 [2024-10-11 21:18:25,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:25,879 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 107 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:25,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 453 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:25,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-10-11 21:18:25,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 128. [2024-10-11 21:18:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 77 states have (on average 1.6883116883116882) internal successors, (130), 121 states have internal predecessors, (130), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:18:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2024-10-11 21:18:25,898 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 14 [2024-10-11 21:18:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:25,898 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2024-10-11 21:18:25,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 21:18:25,898 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2024-10-11 21:18:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 21:18:25,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:25,899 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:25,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 21:18:26,099 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 21:18:26,100 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:26,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:26,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1570455169, now seen corresponding path program 1 times [2024-10-11 21:18:26,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:26,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363256557] [2024-10-11 21:18:26,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:26,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:26,245 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 21:18:26,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:26,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363256557] [2024-10-11 21:18:26,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363256557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:26,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:26,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:18:26,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775785528] [2024-10-11 21:18:26,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:26,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:26,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:26,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:26,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:26,250 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 21:18:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:26,390 INFO L93 Difference]: Finished difference Result 177 states and 180 transitions. [2024-10-11 21:18:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:26,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2024-10-11 21:18:26,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:26,391 INFO L225 Difference]: With dead ends: 177 [2024-10-11 21:18:26,392 INFO L226 Difference]: Without dead ends: 173 [2024-10-11 21:18:26,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 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 21:18:26,393 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 99 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:26,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 392 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:26,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-10-11 21:18:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 128. [2024-10-11 21:18:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 77 states have (on average 1.6363636363636365) internal successors, (126), 121 states have internal predecessors, (126), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:18:26,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2024-10-11 21:18:26,408 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 15 [2024-10-11 21:18:26,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:26,409 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2024-10-11 21:18:26,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 21:18:26,409 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2024-10-11 21:18:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 21:18:26,409 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:26,410 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:26,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 21:18:26,412 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_26_to_34_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:26,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:26,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1995014203, now seen corresponding path program 1 times [2024-10-11 21:18:26,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:26,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302644231] [2024-10-11 21:18:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:26,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:26,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571142585] [2024-10-11 21:18:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:26,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:26,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:26,443 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 21:18:26,445 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 21:18:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:26,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 21:18:26,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:26,536 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 21:18:26,542 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 21:18:26,730 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 21:18:26,731 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:26,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:26,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302644231] [2024-10-11 21:18:26,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:26,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571142585] [2024-10-11 21:18:26,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571142585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:26,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:26,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:26,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922973172] [2024-10-11 21:18:26,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:26,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:18:26,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:26,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:18:26,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:26,734 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21:18:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:27,027 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2024-10-11 21:18:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:18:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 19 [2024-10-11 21:18:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:27,029 INFO L225 Difference]: With dead ends: 141 [2024-10-11 21:18:27,029 INFO L226 Difference]: Without dead ends: 139 [2024-10-11 21:18:27,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:18:27,030 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 83 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:27,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 450 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-11 21:18:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 128. [2024-10-11 21:18:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 77 states have (on average 1.6103896103896105) internal successors, (124), 121 states have internal predecessors, (124), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:18:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2024-10-11 21:18:27,043 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 19 [2024-10-11 21:18:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:27,043 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2024-10-11 21:18:27,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21:18:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2024-10-11 21:18:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 21:18:27,044 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:27,045 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] [2024-10-11 21:18:27,063 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 21:18:27,245 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 21:18:27,246 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:27,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:27,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1653231513, now seen corresponding path program 1 times [2024-10-11 21:18:27,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:27,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144144100] [2024-10-11 21:18:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:27,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:27,427 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 21:18:27,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:27,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144144100] [2024-10-11 21:18:27,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144144100] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:27,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:27,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:27,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686565362] [2024-10-11 21:18:27,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:27,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:27,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:27,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:27,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:27,430 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 21:18:27,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:27,764 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2024-10-11 21:18:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:27,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 21 [2024-10-11 21:18:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:27,766 INFO L225 Difference]: With dead ends: 171 [2024-10-11 21:18:27,766 INFO L226 Difference]: Without dead ends: 170 [2024-10-11 21:18:27,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 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 21:18:27,767 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 84 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:27,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 398 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:27,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-10-11 21:18:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 128. [2024-10-11 21:18:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 121 states have internal predecessors, (123), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:18:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 132 transitions. [2024-10-11 21:18:27,777 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 132 transitions. Word has length 21 [2024-10-11 21:18:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:27,777 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 132 transitions. [2024-10-11 21:18:27,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 21:18:27,777 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 132 transitions. [2024-10-11 21:18:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 21:18:27,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:27,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:27,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 21:18:27,778 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_26_to_34_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:27,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:27,779 INFO L85 PathProgramCache]: Analyzing trace with hash 289430764, now seen corresponding path program 1 times [2024-10-11 21:18:27,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:27,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037027605] [2024-10-11 21:18:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:27,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:27,938 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 21:18:27,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:27,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037027605] [2024-10-11 21:18:27,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037027605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:27,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:27,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:18:27,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627602563] [2024-10-11 21:18:27,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:27,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:27,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:27,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:27,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:27,955 INFO L87 Difference]: Start difference. First operand 128 states and 132 transitions. Second operand has 6 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21:18:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:28,269 INFO L93 Difference]: Finished difference Result 170 states and 173 transitions. [2024-10-11 21:18:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:28,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 22 [2024-10-11 21:18:28,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:28,271 INFO L225 Difference]: With dead ends: 170 [2024-10-11 21:18:28,271 INFO L226 Difference]: Without dead ends: 169 [2024-10-11 21:18:28,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 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 21:18:28,272 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 78 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:28,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 391 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:28,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-10-11 21:18:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 128. [2024-10-11 21:18:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 77 states have (on average 1.5844155844155845) internal successors, (122), 121 states have internal predecessors, (122), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:18:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2024-10-11 21:18:28,278 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 22 [2024-10-11 21:18:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:28,278 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2024-10-11 21:18:28,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21:18:28,279 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2024-10-11 21:18:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-11 21:18:28,280 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:28,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:28,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 21:18:28,280 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_26_to_34_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:28,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:28,281 INFO L85 PathProgramCache]: Analyzing trace with hash 903212149, now seen corresponding path program 1 times [2024-10-11 21:18:28,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:28,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883195523] [2024-10-11 21:18:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:28,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:28,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-11 21:18:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:28,490 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 21:18:28,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:28,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883195523] [2024-10-11 21:18:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883195523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:28,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:28,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:28,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236020152] [2024-10-11 21:18:28,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:28,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:28,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:28,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:28,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:28,495 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:28,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:28,580 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2024-10-11 21:18:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:28,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-10-11 21:18:28,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:28,581 INFO L225 Difference]: With dead ends: 169 [2024-10-11 21:18:28,582 INFO L226 Difference]: Without dead ends: 168 [2024-10-11 21:18:28,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 21:18:28,583 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 68 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:28,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 564 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:28,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-10-11 21:18:28,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 129. [2024-10-11 21:18:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.5769230769230769) internal successors, (123), 122 states have internal predecessors, (123), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:18:28,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2024-10-11 21:18:28,591 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 30 [2024-10-11 21:18:28,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:28,592 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2024-10-11 21:18:28,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:28,593 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2024-10-11 21:18:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 21:18:28,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:28,594 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] [2024-10-11 21:18:28,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 21:18:28,594 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_26_to_34_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:28,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2065194328, now seen corresponding path program 1 times [2024-10-11 21:18:28,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:28,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967696749] [2024-10-11 21:18:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:28,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:28,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-11 21:18:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:28,782 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 21:18:28,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:28,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967696749] [2024-10-11 21:18:28,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967696749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:28,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:28,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:28,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042674054] [2024-10-11 21:18:28,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:28,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:28,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:28,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:28,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:28,785 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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 21:18:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:28,864 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2024-10-11 21:18:28,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:28,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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 31 [2024-10-11 21:18:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:28,866 INFO L225 Difference]: With dead ends: 129 [2024-10-11 21:18:28,866 INFO L226 Difference]: Without dead ends: 128 [2024-10-11 21:18:28,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:28,867 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 130 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:28,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 408 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 21:18:28,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-10-11 21:18:28,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-10-11 21:18:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 78 states have (on average 1.564102564102564) internal successors, (122), 121 states have internal predecessors, (122), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:18:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2024-10-11 21:18:28,873 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 31 [2024-10-11 21:18:28,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:28,874 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2024-10-11 21:18:28,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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 21:18:28,874 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2024-10-11 21:18:28,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 21:18:28,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:28,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:28,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 21:18:28,875 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_26_to_34_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:28,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:28,876 INFO L85 PathProgramCache]: Analyzing trace with hash 403485399, now seen corresponding path program 1 times [2024-10-11 21:18:28,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:28,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638309308] [2024-10-11 21:18:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:28,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:29,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-11 21:18:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:29,012 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 21:18:29,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:29,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638309308] [2024-10-11 21:18:29,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638309308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:29,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:29,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:29,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825730274] [2024-10-11 21:18:29,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:29,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:29,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:29,015 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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 21:18:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:29,116 INFO L93 Difference]: Finished difference Result 166 states and 169 transitions. [2024-10-11 21:18:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:29,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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 32 [2024-10-11 21:18:29,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:29,118 INFO L225 Difference]: With dead ends: 166 [2024-10-11 21:18:29,118 INFO L226 Difference]: Without dead ends: 164 [2024-10-11 21:18:29,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 21:18:29,118 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 64 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:29,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 417 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-10-11 21:18:29,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 131. [2024-10-11 21:18:29,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.5432098765432098) internal successors, (125), 124 states have internal predecessors, (125), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 21:18:29,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2024-10-11 21:18:29,124 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 32 [2024-10-11 21:18:29,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:29,125 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2024-10-11 21:18:29,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 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 21:18:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2024-10-11 21:18:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-11 21:18:29,126 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:29,126 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 21:18:29,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 21:18:29,126 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:29,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash -377185067, now seen corresponding path program 1 times [2024-10-11 21:18:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:29,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349033452] [2024-10-11 21:18:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:29,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:29,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:18:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:29,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:18:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:29,238 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 21:18:29,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:29,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349033452] [2024-10-11 21:18:29,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349033452] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:29,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:29,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:29,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384277434] [2024-10-11 21:18:29,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:29,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:29,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:29,241 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 21:18:29,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:29,573 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2024-10-11 21:18:29,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:29,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 33 [2024-10-11 21:18:29,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:29,574 INFO L225 Difference]: With dead ends: 164 [2024-10-11 21:18:29,574 INFO L226 Difference]: Without dead ends: 162 [2024-10-11 21:18:29,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:29,575 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 86 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:29,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 260 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-10-11 21:18:29,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 136. [2024-10-11 21:18:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 127 states have internal predecessors, (129), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-11 21:18:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2024-10-11 21:18:29,582 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 33 [2024-10-11 21:18:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:29,582 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 139 transitions. [2024-10-11 21:18:29,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 21:18:29,582 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 139 transitions. [2024-10-11 21:18:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 21:18:29,583 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:29,583 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:29,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 21:18:29,584 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_26_to_34_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:29,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:29,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1202415929, now seen corresponding path program 1 times [2024-10-11 21:18:29,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:29,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820691187] [2024-10-11 21:18:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:29,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:29,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254138900] [2024-10-11 21:18:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:29,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:29,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:29,619 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 21:18:29,621 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 21:18:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:29,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 21:18:29,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:29,721 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 21:18:29,863 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 21:18:29,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:29,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:29,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820691187] [2024-10-11 21:18:29,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:29,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254138900] [2024-10-11 21:18:29,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254138900] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:29,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:29,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:29,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496965704] [2024-10-11 21:18:29,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:29,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:18:29,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:29,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:18:29,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:29,867 INFO L87 Difference]: Start difference. First operand 136 states and 139 transitions. Second operand has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 21:18:30,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:30,026 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2024-10-11 21:18:30,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:18:30,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 34 [2024-10-11 21:18:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:30,027 INFO L225 Difference]: With dead ends: 177 [2024-10-11 21:18:30,028 INFO L226 Difference]: Without dead ends: 176 [2024-10-11 21:18:30,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:30,029 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 96 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:30,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 483 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:30,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-10-11 21:18:30,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 141. [2024-10-11 21:18:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 131 states have internal predecessors, (133), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-11 21:18:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2024-10-11 21:18:30,037 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 34 [2024-10-11 21:18:30,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:30,037 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2024-10-11 21:18:30,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 21:18:30,037 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2024-10-11 21:18:30,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 21:18:30,038 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:30,038 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 21:18:30,055 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 21:18:30,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:30,239 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:30,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:30,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1697595305, now seen corresponding path program 1 times [2024-10-11 21:18:30,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:30,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610255167] [2024-10-11 21:18:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:30,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:30,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:18:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:30,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:18:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:30,352 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 21:18:30,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:30,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610255167] [2024-10-11 21:18:30,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610255167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:30,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:30,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794188680] [2024-10-11 21:18:30,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:30,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:30,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:30,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:30,355 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 21:18:30,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:30,554 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2024-10-11 21:18:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:30,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 35 [2024-10-11 21:18:30,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:30,555 INFO L225 Difference]: With dead ends: 171 [2024-10-11 21:18:30,555 INFO L226 Difference]: Without dead ends: 165 [2024-10-11 21:18:30,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 21:18:30,556 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 92 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:30,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 255 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-10-11 21:18:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 147. [2024-10-11 21:18:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 95 states have (on average 1.4631578947368422) internal successors, (139), 137 states have internal predecessors, (139), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-11 21:18:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2024-10-11 21:18:30,563 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 35 [2024-10-11 21:18:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:30,563 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2024-10-11 21:18:30,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 21:18:30,563 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2024-10-11 21:18:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 21:18:30,564 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:30,564 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 21:18:30,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 21:18:30,564 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_26_to_34_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:30,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:30,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1379811732, now seen corresponding path program 1 times [2024-10-11 21:18:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:30,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375836608] [2024-10-11 21:18:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:30,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:30,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935188386] [2024-10-11 21:18:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:30,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:30,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:30,585 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 21:18:30,587 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 21:18:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:30,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 21:18:30,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:30,685 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 21:18:30,841 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 21:18:30,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:30,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:30,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375836608] [2024-10-11 21:18:30,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:30,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935188386] [2024-10-11 21:18:30,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935188386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:30,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:30,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:30,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952668952] [2024-10-11 21:18:30,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:30,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:18:30,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:30,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:18:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:30,843 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 21:18:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:31,049 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2024-10-11 21:18:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:18:31,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 35 [2024-10-11 21:18:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:31,051 INFO L225 Difference]: With dead ends: 171 [2024-10-11 21:18:31,051 INFO L226 Difference]: Without dead ends: 170 [2024-10-11 21:18:31,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 21:18:31,053 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 59 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:31,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 487 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-10-11 21:18:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 148. [2024-10-11 21:18:31,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 96 states have (on average 1.4583333333333333) internal successors, (140), 138 states have internal predecessors, (140), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-11 21:18:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2024-10-11 21:18:31,060 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 35 [2024-10-11 21:18:31,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:31,060 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2024-10-11 21:18:31,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 21:18:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2024-10-11 21:18:31,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 21:18:31,063 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:31,063 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:31,082 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 21:18:31,264 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,SelfDestructingSolverStorable14 [2024-10-11 21:18:31,264 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_26_to_34_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:31,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:31,264 INFO L85 PathProgramCache]: Analyzing trace with hash 175509403, now seen corresponding path program 1 times [2024-10-11 21:18:31,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:31,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439317408] [2024-10-11 21:18:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:31,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:31,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-11 21:18:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:31,417 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 21:18:31,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:31,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439317408] [2024-10-11 21:18:31,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439317408] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:31,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:31,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:31,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404293095] [2024-10-11 21:18:31,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:31,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:31,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:31,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:31,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:31,419 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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 21:18:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:31,592 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2024-10-11 21:18:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:31,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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 36 [2024-10-11 21:18:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:31,594 INFO L225 Difference]: With dead ends: 152 [2024-10-11 21:18:31,594 INFO L226 Difference]: Without dead ends: 151 [2024-10-11 21:18:31,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 21:18:31,595 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 40 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:31,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 484 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-11 21:18:31,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2024-10-11 21:18:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 97 states have (on average 1.4536082474226804) internal successors, (141), 139 states have internal predecessors, (141), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-11 21:18:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2024-10-11 21:18:31,601 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 36 [2024-10-11 21:18:31,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:31,602 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2024-10-11 21:18:31,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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 21:18:31,602 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2024-10-11 21:18:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 21:18:31,602 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:31,602 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 21:18:31,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 21:18:31,603 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_26_to_34_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:31,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:31,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1145824334, now seen corresponding path program 1 times [2024-10-11 21:18:31,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:31,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33987471] [2024-10-11 21:18:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:31,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:31,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-11 21:18:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:31,780 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 21:18:31,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:31,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33987471] [2024-10-11 21:18:31,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33987471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:31,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:31,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:31,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851400673] [2024-10-11 21:18:31,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:31,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:31,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:31,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:31,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:31,782 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (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 21:18:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:32,117 INFO L93 Difference]: Finished difference Result 151 states and 153 transitions. [2024-10-11 21:18:32,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:32,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (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 37 [2024-10-11 21:18:32,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:32,118 INFO L225 Difference]: With dead ends: 151 [2024-10-11 21:18:32,118 INFO L226 Difference]: Without dead ends: 150 [2024-10-11 21:18:32,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:32,119 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 35 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:32,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 463 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:32,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-10-11 21:18:32,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-10-11 21:18:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.4489795918367347) internal successors, (142), 140 states have internal predecessors, (142), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-11 21:18:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2024-10-11 21:18:32,125 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 37 [2024-10-11 21:18:32,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:32,126 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2024-10-11 21:18:32,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (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 21:18:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2024-10-11 21:18:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 21:18:32,126 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:32,127 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:32,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 21:18:32,127 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_26_to_34_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:32,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1202756549, now seen corresponding path program 1 times [2024-10-11 21:18:32,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:32,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487623130] [2024-10-11 21:18:32,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:32,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:32,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090713273] [2024-10-11 21:18:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:32,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:32,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:32,149 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 21:18:32,151 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 21:18:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:32,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-11 21:18:32,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:32,265 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 21:18:32,271 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 21:18:32,530 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 21:18:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:32,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:18:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:32,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:32,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487623130] [2024-10-11 21:18:32,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:32,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090713273] [2024-10-11 21:18:32,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090713273] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:18:32,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 21:18:32,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2024-10-11 21:18:32,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766856243] [2024-10-11 21:18:32,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 21:18:32,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 21:18:32,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:32,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 21:18:32,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-10-11 21:18:32,870 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand has 21 states, 18 states have (on average 4.111111111111111) internal successors, (74), 17 states have internal predecessors, (74), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:18:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:34,469 INFO L93 Difference]: Finished difference Result 231 states and 238 transitions. [2024-10-11 21:18:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 21:18:34,470 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.111111111111111) internal successors, (74), 17 states have internal predecessors, (74), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-10-11 21:18:34,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:34,471 INFO L225 Difference]: With dead ends: 231 [2024-10-11 21:18:34,471 INFO L226 Difference]: Without dead ends: 227 [2024-10-11 21:18:34,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=238, Invalid=952, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 21:18:34,473 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 507 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:34,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 902 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-11 21:18:34,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-11 21:18:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 183. [2024-10-11 21:18:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 128 states have (on average 1.484375) internal successors, (190), 169 states have internal predecessors, (190), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions. [2024-10-11 21:18:34,483 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 41 [2024-10-11 21:18:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:34,483 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions. [2024-10-11 21:18:34,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.111111111111111) internal successors, (74), 17 states have internal predecessors, (74), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:18:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions. [2024-10-11 21:18:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 21:18:34,484 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:34,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:34,505 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 21:18:34,688 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 21:18:34,689 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:34,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:34,690 INFO L85 PathProgramCache]: Analyzing trace with hash 799808221, now seen corresponding path program 1 times [2024-10-11 21:18:34,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:34,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179232438] [2024-10-11 21:18:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:34,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:34,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:18:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:35,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:18:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:35,023 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 21:18:35,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:35,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179232438] [2024-10-11 21:18:35,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179232438] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:35,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:35,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:35,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408625808] [2024-10-11 21:18:35,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:35,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:35,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:35,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:35,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:35,027 INFO L87 Difference]: Start difference. First operand 183 states and 208 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 21:18:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:36,018 INFO L93 Difference]: Finished difference Result 198 states and 227 transitions. [2024-10-11 21:18:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:36,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 41 [2024-10-11 21:18:36,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:36,021 INFO L225 Difference]: With dead ends: 198 [2024-10-11 21:18:36,021 INFO L226 Difference]: Without dead ends: 197 [2024-10-11 21:18:36,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:36,042 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 70 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:36,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 312 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-11 21:18:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-10-11 21:18:36,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 184. [2024-10-11 21:18:36,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 129 states have (on average 1.4806201550387597) internal successors, (191), 170 states have internal predecessors, (191), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 209 transitions. [2024-10-11 21:18:36,053 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 209 transitions. Word has length 41 [2024-10-11 21:18:36,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:36,053 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 209 transitions. [2024-10-11 21:18:36,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 21:18:36,053 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 209 transitions. [2024-10-11 21:18:36,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-11 21:18:36,054 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:36,054 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] [2024-10-11 21:18:36,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 21:18:36,054 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:36,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:36,055 INFO L85 PathProgramCache]: Analyzing trace with hash -975748871, now seen corresponding path program 1 times [2024-10-11 21:18:36,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:36,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069699564] [2024-10-11 21:18:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:36,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:36,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493399215] [2024-10-11 21:18:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:36,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:36,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:36,077 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 21:18:36,079 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 21:18:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:36,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 21:18:36,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:36,181 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 21:18:36,186 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 21:18:36,342 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 21:18:36,342 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:36,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:36,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069699564] [2024-10-11 21:18:36,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:36,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493399215] [2024-10-11 21:18:36,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493399215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:36,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:36,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:18:36,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925309256] [2024-10-11 21:18:36,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:36,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:18:36,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:36,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:18:36,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:36,344 INFO L87 Difference]: Start difference. First operand 184 states and 209 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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 21:18:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:36,587 INFO L93 Difference]: Finished difference Result 198 states and 226 transitions. [2024-10-11 21:18:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:18:36,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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 42 [2024-10-11 21:18:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:36,589 INFO L225 Difference]: With dead ends: 198 [2024-10-11 21:18:36,589 INFO L226 Difference]: Without dead ends: 197 [2024-10-11 21:18:36,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:36,589 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 55 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:36,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 280 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-10-11 21:18:36,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 185. [2024-10-11 21:18:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 130 states have (on average 1.476923076923077) internal successors, (192), 171 states have internal predecessors, (192), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 210 transitions. [2024-10-11 21:18:36,602 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 210 transitions. Word has length 42 [2024-10-11 21:18:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:36,602 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 210 transitions. [2024-10-11 21:18:36,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 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 21:18:36,602 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 210 transitions. [2024-10-11 21:18:36,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 21:18:36,603 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:36,603 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:36,620 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 21:18:36,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-10-11 21:18:36,808 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_26_to_34_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:36,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:36,808 INFO L85 PathProgramCache]: Analyzing trace with hash -502838307, now seen corresponding path program 1 times [2024-10-11 21:18:36,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:36,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12391056] [2024-10-11 21:18:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:36,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:37,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-11 21:18:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:37,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:37,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12391056] [2024-10-11 21:18:37,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12391056] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:18:37,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075206322] [2024-10-11 21:18:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:37,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:37,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:37,068 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 21:18:37,069 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 21:18:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:37,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 21:18:37,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:37,180 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 21:18:37,272 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 23 treesize of output 3 [2024-10-11 21:18:37,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 21:18:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:37,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:18:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:37,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075206322] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:18:37,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:18:37,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-11 21:18:37,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814018593] [2024-10-11 21:18:37,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:18:37,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 21:18:37,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:37,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 21:18:37,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-10-11 21:18:37,448 INFO L87 Difference]: Start difference. First operand 185 states and 210 transitions. Second operand has 18 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 21:18:38,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:38,009 INFO L93 Difference]: Finished difference Result 218 states and 225 transitions. [2024-10-11 21:18:38,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 21:18:38,009 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-10-11 21:18:38,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:38,011 INFO L225 Difference]: With dead ends: 218 [2024-10-11 21:18:38,011 INFO L226 Difference]: Without dead ends: 216 [2024-10-11 21:18:38,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2024-10-11 21:18:38,012 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 346 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:38,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 772 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:18:38,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-10-11 21:18:38,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 183. [2024-10-11 21:18:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 130 states have (on average 1.4461538461538461) internal successors, (188), 169 states have internal predecessors, (188), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:38,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 206 transitions. [2024-10-11 21:18:38,025 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 206 transitions. Word has length 43 [2024-10-11 21:18:38,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:38,026 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 206 transitions. [2024-10-11 21:18:38,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 5.4) internal successors, (81), 14 states have internal predecessors, (81), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 21:18:38,026 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 206 transitions. [2024-10-11 21:18:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 21:18:38,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:38,026 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] [2024-10-11 21:18:38,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 21:18:38,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:38,231 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:38,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:38,231 INFO L85 PathProgramCache]: Analyzing trace with hash -183443873, now seen corresponding path program 1 times [2024-10-11 21:18:38,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:38,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193882706] [2024-10-11 21:18:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:38,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:38,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:18:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:38,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:18:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:38,367 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 21:18:38,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:38,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193882706] [2024-10-11 21:18:38,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193882706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:38,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:38,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:38,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779186218] [2024-10-11 21:18:38,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:38,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:38,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:38,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:38,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:38,369 INFO L87 Difference]: Start difference. First operand 183 states and 206 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 21:18:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:38,650 INFO L93 Difference]: Finished difference Result 197 states and 221 transitions. [2024-10-11 21:18:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:18:38,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 43 [2024-10-11 21:18:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:38,652 INFO L225 Difference]: With dead ends: 197 [2024-10-11 21:18:38,652 INFO L226 Difference]: Without dead ends: 196 [2024-10-11 21:18:38,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:38,653 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 66 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:38,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 282 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-10-11 21:18:38,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 184. [2024-10-11 21:18:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 131 states have (on average 1.4427480916030535) internal successors, (189), 170 states have internal predecessors, (189), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 207 transitions. [2024-10-11 21:18:38,661 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 207 transitions. Word has length 43 [2024-10-11 21:18:38,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:38,661 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 207 transitions. [2024-10-11 21:18:38,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 21:18:38,661 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 207 transitions. [2024-10-11 21:18:38,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-11 21:18:38,662 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:38,662 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:38,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 21:18:38,662 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_26_to_34_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:38,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1591881754, now seen corresponding path program 1 times [2024-10-11 21:18:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:38,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304742297] [2024-10-11 21:18:38,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:38,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:38,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-11 21:18:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:38,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:38,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304742297] [2024-10-11 21:18:38,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304742297] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:18:38,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049628335] [2024-10-11 21:18:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:38,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:38,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:38,923 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 21:18:38,924 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 21:18:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:39,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 21:18:39,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:39,033 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 21:18:39,133 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 23 treesize of output 3 [2024-10-11 21:18:39,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 21:18:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:39,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:18:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:39,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049628335] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 21:18:39,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 21:18:39,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 9] total 17 [2024-10-11 21:18:39,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860977465] [2024-10-11 21:18:39,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:39,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:18:39,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:18:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-11 21:18:39,271 INFO L87 Difference]: Start difference. First operand 184 states and 207 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:39,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:39,725 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2024-10-11 21:18:39,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 21:18:39,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2024-10-11 21:18:39,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:39,727 INFO L225 Difference]: With dead ends: 184 [2024-10-11 21:18:39,727 INFO L226 Difference]: Without dead ends: 182 [2024-10-11 21:18:39,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2024-10-11 21:18:39,728 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 101 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:39,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 426 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-10-11 21:18:39,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-10-11 21:18:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 131 states have (on average 1.4122137404580153) internal successors, (185), 168 states have internal predecessors, (185), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 203 transitions. [2024-10-11 21:18:39,736 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 203 transitions. Word has length 44 [2024-10-11 21:18:39,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:39,737 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 203 transitions. [2024-10-11 21:18:39,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 203 transitions. [2024-10-11 21:18:39,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-11 21:18:39,737 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:39,737 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] [2024-10-11 21:18:39,754 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 21:18:39,938 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,SelfDestructingSolverStorable22 [2024-10-11 21:18:39,938 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:39,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1391792709, now seen corresponding path program 1 times [2024-10-11 21:18:39,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:39,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145630311] [2024-10-11 21:18:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:39,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:40,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:18:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:40,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:18:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:40,109 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 21:18:40,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:40,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145630311] [2024-10-11 21:18:40,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145630311] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:40,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:40,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:40,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220085630] [2024-10-11 21:18:40,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:40,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:40,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:40,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:40,111 INFO L87 Difference]: Start difference. First operand 182 states and 203 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 21:18:40,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:40,232 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2024-10-11 21:18:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:18:40,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 44 [2024-10-11 21:18:40,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:40,234 INFO L225 Difference]: With dead ends: 194 [2024-10-11 21:18:40,234 INFO L226 Difference]: Without dead ends: 193 [2024-10-11 21:18:40,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:40,234 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 91 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:40,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 207 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:40,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-10-11 21:18:40,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 183. [2024-10-11 21:18:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 132 states have (on average 1.4090909090909092) internal successors, (186), 169 states have internal predecessors, (186), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 204 transitions. [2024-10-11 21:18:40,243 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 204 transitions. Word has length 44 [2024-10-11 21:18:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:40,243 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 204 transitions. [2024-10-11 21:18:40,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 21:18:40,243 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 204 transitions. [2024-10-11 21:18:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 21:18:40,244 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:40,244 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:40,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 21:18:40,246 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_26_to_34_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:40,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:40,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2103694207, now seen corresponding path program 1 times [2024-10-11 21:18:40,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:40,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526985149] [2024-10-11 21:18:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:40,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:40,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380298173] [2024-10-11 21:18:40,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:40,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:40,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:40,269 INFO L229 MonitoredProcess]: Starting monitored process 10 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 21:18:40,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 21:18:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:40,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 21:18:40,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:40,388 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 21:18:40,480 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 23 treesize of output 3 [2024-10-11 21:18:40,531 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 21:18:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:40,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:18:41,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:41,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526985149] [2024-10-11 21:18:41,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:41,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380298173] [2024-10-11 21:18:41,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380298173] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:18:41,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:18:41,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-10-11 21:18:41,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053413692] [2024-10-11 21:18:41,005 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:18:41,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 21:18:41,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:41,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 21:18:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-10-11 21:18:41,006 INFO L87 Difference]: Start difference. First operand 183 states and 204 transitions. Second operand has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:41,431 INFO L93 Difference]: Finished difference Result 210 states and 215 transitions. [2024-10-11 21:18:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 21:18:41,431 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-10-11 21:18:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:41,432 INFO L225 Difference]: With dead ends: 210 [2024-10-11 21:18:41,433 INFO L226 Difference]: Without dead ends: 209 [2024-10-11 21:18:41,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-10-11 21:18:41,433 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 169 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:41,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 577 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:41,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-10-11 21:18:41,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 183. [2024-10-11 21:18:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 132 states have (on average 1.4015151515151516) internal successors, (185), 169 states have internal predecessors, (185), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 203 transitions. [2024-10-11 21:18:41,441 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 203 transitions. Word has length 45 [2024-10-11 21:18:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:41,442 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 203 transitions. [2024-10-11 21:18:41,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 203 transitions. [2024-10-11 21:18:41,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 21:18:41,442 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:41,442 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] [2024-10-11 21:18:41,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 21:18:41,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:41,647 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:41,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:41,647 INFO L85 PathProgramCache]: Analyzing trace with hash -195900959, now seen corresponding path program 1 times [2024-10-11 21:18:41,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:41,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51054549] [2024-10-11 21:18:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:41,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:41,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078101295] [2024-10-11 21:18:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:41,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:41,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:41,671 INFO L229 MonitoredProcess]: Starting monitored process 11 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 21:18:41,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 21:18:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:41,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 21:18:41,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:41,787 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 21:18:41,857 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 21:18:41,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:41,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:41,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51054549] [2024-10-11 21:18:41,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:41,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078101295] [2024-10-11 21:18:41,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078101295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:41,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:41,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 21:18:41,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399821404] [2024-10-11 21:18:41,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:41,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 21:18:41,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:41,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 21:18:41,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 21:18:41,859 INFO L87 Difference]: Start difference. First operand 183 states and 203 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 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 21:18:41,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:41,959 INFO L93 Difference]: Finished difference Result 193 states and 214 transitions. [2024-10-11 21:18:41,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:18:41,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 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 45 [2024-10-11 21:18:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:41,960 INFO L225 Difference]: With dead ends: 193 [2024-10-11 21:18:41,960 INFO L226 Difference]: Without dead ends: 191 [2024-10-11 21:18:41,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:18:41,961 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 36 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:41,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 232 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 21:18:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-10-11 21:18:41,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2024-10-11 21:18:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 134 states have (on average 1.3955223880597014) internal successors, (187), 171 states have internal predecessors, (187), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 205 transitions. [2024-10-11 21:18:41,974 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 205 transitions. Word has length 45 [2024-10-11 21:18:41,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:41,975 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 205 transitions. [2024-10-11 21:18:41,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 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 21:18:41,975 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 205 transitions. [2024-10-11 21:18:41,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-11 21:18:41,976 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:41,976 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:41,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 21:18:42,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-11 21:18:42,177 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_26_to_34_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:42,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:42,177 INFO L85 PathProgramCache]: Analyzing trace with hash 790011068, now seen corresponding path program 1 times [2024-10-11 21:18:42,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:42,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025418969] [2024-10-11 21:18:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:42,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:42,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944417851] [2024-10-11 21:18:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:42,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:42,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:42,209 INFO L229 MonitoredProcess]: Starting monitored process 12 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 21:18:42,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 21:18:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:42,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-11 21:18:42,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:42,327 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 21:18:42,419 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 21:18:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:42,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:18:43,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025418969] [2024-10-11 21:18:43,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944417851] [2024-10-11 21:18:43,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944417851] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:18:43,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:18:43,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-10-11 21:18:43,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274900096] [2024-10-11 21:18:43,525 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:18:43,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 21:18:43,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:43,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 21:18:43,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-10-11 21:18:43,526 INFO L87 Difference]: Start difference. First operand 185 states and 205 transitions. Second operand has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:43,943 INFO L93 Difference]: Finished difference Result 207 states and 212 transitions. [2024-10-11 21:18:43,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 21:18:43,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2024-10-11 21:18:43,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:43,944 INFO L225 Difference]: With dead ends: 207 [2024-10-11 21:18:43,944 INFO L226 Difference]: Without dead ends: 206 [2024-10-11 21:18:43,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-10-11 21:18:43,945 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 144 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:43,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 692 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:18:43,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-10-11 21:18:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 185. [2024-10-11 21:18:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 134 states have (on average 1.3880597014925373) internal successors, (186), 171 states have internal predecessors, (186), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 204 transitions. [2024-10-11 21:18:43,954 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 204 transitions. Word has length 46 [2024-10-11 21:18:43,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:43,954 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 204 transitions. [2024-10-11 21:18:43,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:43,954 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 204 transitions. [2024-10-11 21:18:43,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-11 21:18:43,955 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:43,955 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:43,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 21:18:44,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-11 21:18:44,160 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_26_to_34_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:44,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:44,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1279460575, now seen corresponding path program 1 times [2024-10-11 21:18:44,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:44,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461053368] [2024-10-11 21:18:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:44,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:44,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151337362] [2024-10-11 21:18:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:44,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:44,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:44,179 INFO L229 MonitoredProcess]: Starting monitored process 13 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 21:18:44,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 21:18:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:44,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-11 21:18:44,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:44,306 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 21:18:44,452 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 21:18:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:44,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:18:49,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:49,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461053368] [2024-10-11 21:18:49,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:49,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151337362] [2024-10-11 21:18:49,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151337362] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:18:49,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:18:49,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-10-11 21:18:49,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374303664] [2024-10-11 21:18:49,394 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:18:49,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 21:18:49,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:49,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 21:18:49,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=385, Unknown=1, NotChecked=0, Total=462 [2024-10-11 21:18:49,395 INFO L87 Difference]: Start difference. First operand 185 states and 204 transitions. Second operand has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:49,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:49,928 INFO L93 Difference]: Finished difference Result 206 states and 211 transitions. [2024-10-11 21:18:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 21:18:49,929 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2024-10-11 21:18:49,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:49,930 INFO L225 Difference]: With dead ends: 206 [2024-10-11 21:18:49,931 INFO L226 Difference]: Without dead ends: 205 [2024-10-11 21:18:49,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=154, Invalid=657, Unknown=1, NotChecked=0, Total=812 [2024-10-11 21:18:49,932 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 139 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:49,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 766 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:18:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-10-11 21:18:49,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 185. [2024-10-11 21:18:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 134 states have (on average 1.3805970149253732) internal successors, (185), 171 states have internal predecessors, (185), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 203 transitions. [2024-10-11 21:18:49,940 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 203 transitions. Word has length 47 [2024-10-11 21:18:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:49,940 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 203 transitions. [2024-10-11 21:18:49,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 203 transitions. [2024-10-11 21:18:49,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-11 21:18:49,941 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:49,941 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] [2024-10-11 21:18:49,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-11 21:18:50,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-11 21:18:50,146 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:50,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:50,146 INFO L85 PathProgramCache]: Analyzing trace with hash 717741411, now seen corresponding path program 1 times [2024-10-11 21:18:50,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:50,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962583171] [2024-10-11 21:18:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:50,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:50,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528134344] [2024-10-11 21:18:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:50,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:50,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:50,177 INFO L229 MonitoredProcess]: Starting monitored process 14 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 21:18:50,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 21:18:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:50,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 21:18:50,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:50,290 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 21:18:50,295 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 21:18:50,498 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 21:18:50,499 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:18:50,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:50,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962583171] [2024-10-11 21:18:50,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:50,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528134344] [2024-10-11 21:18:50,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528134344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:18:50,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:18:50,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:18:50,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844376379] [2024-10-11 21:18:50,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:18:50,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:18:50,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:50,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:18:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:18:50,501 INFO L87 Difference]: Start difference. First operand 185 states and 203 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 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 21:18:50,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:50,682 INFO L93 Difference]: Finished difference Result 191 states and 210 transitions. [2024-10-11 21:18:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:18:50,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 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 47 [2024-10-11 21:18:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:50,683 INFO L225 Difference]: With dead ends: 191 [2024-10-11 21:18:50,683 INFO L226 Difference]: Without dead ends: 189 [2024-10-11 21:18:50,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:18:50,684 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 34 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:50,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 267 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 21:18:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-10-11 21:18:50,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2024-10-11 21:18:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 136 states have (on average 1.375) internal successors, (187), 173 states have internal predecessors, (187), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 205 transitions. [2024-10-11 21:18:50,696 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 205 transitions. Word has length 47 [2024-10-11 21:18:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:50,697 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 205 transitions. [2024-10-11 21:18:50,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 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 21:18:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 205 transitions. [2024-10-11 21:18:50,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-11 21:18:50,697 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:50,697 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:50,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 21:18:50,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-11 21:18:50,902 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_26_to_34_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:50,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:50,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1008572066, now seen corresponding path program 1 times [2024-10-11 21:18:50,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:50,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994083997] [2024-10-11 21:18:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:50,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:50,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496795884] [2024-10-11 21:18:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:50,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:50,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:50,928 INFO L229 MonitoredProcess]: Starting monitored process 15 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 21:18:50,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 21:18:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:51,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-11 21:18:51,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:51,063 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 21:18:51,199 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 21:18:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:51,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:18:53,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:53,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994083997] [2024-10-11 21:18:53,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:53,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496795884] [2024-10-11 21:18:53,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496795884] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:18:53,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:18:53,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-10-11 21:18:53,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678627361] [2024-10-11 21:18:53,042 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:18:53,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 21:18:53,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:53,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 21:18:53,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-10-11 21:18:53,043 INFO L87 Difference]: Start difference. First operand 187 states and 205 transitions. Second operand has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:53,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:18:53,844 INFO L93 Difference]: Finished difference Result 203 states and 208 transitions. [2024-10-11 21:18:53,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 21:18:53,845 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-10-11 21:18:53,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:18:53,846 INFO L225 Difference]: With dead ends: 203 [2024-10-11 21:18:53,846 INFO L226 Difference]: Without dead ends: 202 [2024-10-11 21:18:53,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2024-10-11 21:18:53,847 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 152 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:18:53,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 619 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:18:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-10-11 21:18:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 187. [2024-10-11 21:18:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 136 states have (on average 1.3676470588235294) internal successors, (186), 173 states have internal predecessors, (186), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-11 21:18:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 204 transitions. [2024-10-11 21:18:53,854 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 204 transitions. Word has length 48 [2024-10-11 21:18:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:18:53,855 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 204 transitions. [2024-10-11 21:18:53,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:18:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 204 transitions. [2024-10-11 21:18:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-11 21:18:53,856 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:18:53,856 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:18:53,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 21:18:54,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:54,060 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_26_to_34_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:18:54,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:18:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1200962877, now seen corresponding path program 1 times [2024-10-11 21:18:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:18:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177689794] [2024-10-11 21:18:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:18:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:18:54,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787936679] [2024-10-11 21:18:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:18:54,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:18:54,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:18:54,080 INFO L229 MonitoredProcess]: Starting monitored process 16 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 21:18:54,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 21:18:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:18:54,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-10-11 21:18:54,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:18:54,217 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 21:18:54,221 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 21:18:54,402 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 21:18:54,475 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 21:18:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:54,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:18:55,335 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:18:55,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:18:55,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177689794] [2024-10-11 21:18:55,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:18:55,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787936679] [2024-10-11 21:18:55,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787936679] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:18:55,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 21:18:55,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2024-10-11 21:18:55,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053212994] [2024-10-11 21:18:55,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 21:18:55,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 21:18:55,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:18:55,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 21:18:55,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-10-11 21:18:55,338 INFO L87 Difference]: Start difference. First operand 187 states and 204 transitions. Second operand has 27 states, 24 states have (on average 3.75) internal successors, (90), 23 states have internal predecessors, (90), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:00,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-10-11 21:19:09,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-10-11 21:19:11,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:11,741 INFO L93 Difference]: Finished difference Result 252 states and 263 transitions. [2024-10-11 21:19:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 21:19:11,742 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 3.75) internal successors, (90), 23 states have internal predecessors, (90), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2024-10-11 21:19:11,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:11,743 INFO L225 Difference]: With dead ends: 252 [2024-10-11 21:19:11,743 INFO L226 Difference]: Without dead ends: 250 [2024-10-11 21:19:11,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=323, Invalid=1747, Unknown=0, NotChecked=0, Total=2070 [2024-10-11 21:19:11,744 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 505 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 36 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:11,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 910 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1082 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2024-10-11 21:19:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-10-11 21:19:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 218. [2024-10-11 21:19:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 163 states have (on average 1.3987730061349692) internal successors, (228), 201 states have internal predecessors, (228), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-10-11 21:19:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 252 transitions. [2024-10-11 21:19:11,755 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 252 transitions. Word has length 49 [2024-10-11 21:19:11,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:11,755 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 252 transitions. [2024-10-11 21:19:11,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 3.75) internal successors, (90), 23 states have internal predecessors, (90), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 252 transitions. [2024-10-11 21:19:11,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-11 21:19:11,756 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:11,756 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 21:19:11,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:11,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:11,957 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:19:11,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:11,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1740236571, now seen corresponding path program 1 times [2024-10-11 21:19:11,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:11,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289109334] [2024-10-11 21:19:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:12,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:12,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:12,170 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 21:19:12,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:12,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289109334] [2024-10-11 21:19:12,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289109334] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:12,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:12,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 21:19:12,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435090802] [2024-10-11 21:19:12,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:12,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 21:19:12,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:12,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 21:19:12,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:12,172 INFO L87 Difference]: Start difference. First operand 218 states and 252 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 21:19:12,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:12,554 INFO L93 Difference]: Finished difference Result 221 states and 255 transitions. [2024-10-11 21:19:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:19:12,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 49 [2024-10-11 21:19:12,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:12,556 INFO L225 Difference]: With dead ends: 221 [2024-10-11 21:19:12,556 INFO L226 Difference]: Without dead ends: 220 [2024-10-11 21:19:12,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 21:19:12,557 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 47 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:12,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 289 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:19:12,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-10-11 21:19:12,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2024-10-11 21:19:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 164 states have (on average 1.396341463414634) internal successors, (229), 202 states have internal predecessors, (229), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2024-10-11 21:19:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 253 transitions. [2024-10-11 21:19:12,569 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 253 transitions. Word has length 49 [2024-10-11 21:19:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:12,570 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 253 transitions. [2024-10-11 21:19:12,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 21:19:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 253 transitions. [2024-10-11 21:19:12,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-11 21:19:12,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:12,571 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 21:19:12,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-11 21:19:12,571 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:19:12,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:12,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1887241217, now seen corresponding path program 1 times [2024-10-11 21:19:12,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:12,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417853979] [2024-10-11 21:19:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:12,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:12,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:19:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:12,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-11 21:19:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:12,736 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 21:19:12,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:12,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417853979] [2024-10-11 21:19:12,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417853979] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:19:12,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:19:12,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:19:12,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204407777] [2024-10-11 21:19:12,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:19:12,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:19:12,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:12,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:19:12,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:12,738 INFO L87 Difference]: Start difference. First operand 219 states and 253 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:13,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:13,017 INFO L93 Difference]: Finished difference Result 221 states and 254 transitions. [2024-10-11 21:19:13,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 21:19:13,018 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-10-11 21:19:13,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:13,019 INFO L225 Difference]: With dead ends: 221 [2024-10-11 21:19:13,019 INFO L226 Difference]: Without dead ends: 199 [2024-10-11 21:19:13,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:19:13,020 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 67 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:13,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 215 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:19:13,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-10-11 21:19:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2024-10-11 21:19:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 145 states have (on average 1.4413793103448276) internal successors, (209), 183 states have internal predecessors, (209), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-11 21:19:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 232 transitions. [2024-10-11 21:19:13,038 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 232 transitions. Word has length 50 [2024-10-11 21:19:13,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:13,038 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 232 transitions. [2024-10-11 21:19:13,038 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 232 transitions. [2024-10-11 21:19:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 21:19:13,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:13,039 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:13,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-11 21:19:13,039 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_26_to_34_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:19:13,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:13,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1220880997, now seen corresponding path program 1 times [2024-10-11 21:19:13,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:13,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236659456] [2024-10-11 21:19:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:13,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:13,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-11 21:19:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:13,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:13,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236659456] [2024-10-11 21:19:13,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236659456] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:13,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054486326] [2024-10-11 21:19:13,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:13,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:13,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:13,311 INFO L229 MonitoredProcess]: Starting monitored process 17 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 21:19:13,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 21:19:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:13,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 21:19:13,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:13,434 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 21:19:13,586 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 23 treesize of output 3 [2024-10-11 21:19:13,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 21:19:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:13,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054486326] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:13,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:19:13,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 18 [2024-10-11 21:19:13,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017073451] [2024-10-11 21:19:13,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:13,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 21:19:13,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:13,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 21:19:13,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-10-11 21:19:13,767 INFO L87 Difference]: Start difference. First operand 199 states and 232 transitions. Second operand has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 16 states have internal predecessors, (108), 6 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 21:19:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:14,458 INFO L93 Difference]: Finished difference Result 207 states and 232 transitions. [2024-10-11 21:19:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 21:19:14,458 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 16 states have internal predecessors, (108), 6 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2024-10-11 21:19:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:14,459 INFO L225 Difference]: With dead ends: 207 [2024-10-11 21:19:14,459 INFO L226 Difference]: Without dead ends: 206 [2024-10-11 21:19:14,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2024-10-11 21:19:14,460 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 324 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:14,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 604 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 21:19:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-10-11 21:19:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 198. [2024-10-11 21:19:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 145 states have (on average 1.4206896551724137) internal successors, (206), 182 states have internal predecessors, (206), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-11 21:19:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 229 transitions. [2024-10-11 21:19:14,472 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 229 transitions. Word has length 51 [2024-10-11 21:19:14,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:14,472 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 229 transitions. [2024-10-11 21:19:14,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 16 states have internal predecessors, (108), 6 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 21:19:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 229 transitions. [2024-10-11 21:19:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-11 21:19:14,473 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:14,473 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:14,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-11 21:19:14,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-11 21:19:14,678 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_26_to_34_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:19:14,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:14,678 INFO L85 PathProgramCache]: Analyzing trace with hash -807394654, now seen corresponding path program 1 times [2024-10-11 21:19:14,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:14,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188856532] [2024-10-11 21:19:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:14,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:14,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-11 21:19:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:14,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:14,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188856532] [2024-10-11 21:19:14,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188856532] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:14,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114776033] [2024-10-11 21:19:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:14,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:14,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:14,956 INFO L229 MonitoredProcess]: Starting monitored process 18 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 21:19:14,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 21:19:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:15,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-11 21:19:15,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:15,086 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 21:19:15,198 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 23 treesize of output 3 [2024-10-11 21:19:15,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 21:19:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:15,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:15,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114776033] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:15,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:19:15,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-10-11 21:19:15,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404543577] [2024-10-11 21:19:15,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:15,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 21:19:15,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:15,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 21:19:15,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-10-11 21:19:15,427 INFO L87 Difference]: Start difference. First operand 198 states and 229 transitions. Second operand has 19 states, 16 states have (on average 6.75) internal successors, (108), 15 states have internal predecessors, (108), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 21:19:16,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:16,022 INFO L93 Difference]: Finished difference Result 225 states and 234 transitions. [2024-10-11 21:19:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 21:19:16,023 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.75) internal successors, (108), 15 states have internal predecessors, (108), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 52 [2024-10-11 21:19:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:16,024 INFO L225 Difference]: With dead ends: 225 [2024-10-11 21:19:16,024 INFO L226 Difference]: Without dead ends: 224 [2024-10-11 21:19:16,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2024-10-11 21:19:16,025 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 263 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:16,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 741 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 21:19:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-11 21:19:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 198. [2024-10-11 21:19:16,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 145 states have (on average 1.4068965517241379) internal successors, (204), 182 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-11 21:19:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 227 transitions. [2024-10-11 21:19:16,035 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 227 transitions. Word has length 52 [2024-10-11 21:19:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:16,035 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 227 transitions. [2024-10-11 21:19:16,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.75) internal successors, (108), 15 states have internal predecessors, (108), 6 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 21:19:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 227 transitions. [2024-10-11 21:19:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-11 21:19:16,036 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:16,036 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:16,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:16,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:16,241 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting func_to_recursive_line_26_to_34_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:19:16,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:16,241 INFO L85 PathProgramCache]: Analyzing trace with hash 740569607, now seen corresponding path program 1 times [2024-10-11 21:19:16,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:16,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104083521] [2024-10-11 21:19:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:16,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:16,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599771690] [2024-10-11 21:19:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:16,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:16,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:16,261 INFO L229 MonitoredProcess]: Starting monitored process 19 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 21:19:16,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 21:19:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:16,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-11 21:19:16,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:16,404 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 21:19:16,586 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 21:19:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:16,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:17,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:17,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104083521] [2024-10-11 21:19:17,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:17,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599771690] [2024-10-11 21:19:17,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599771690] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:17,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:17,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-10-11 21:19:17,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548559722] [2024-10-11 21:19:17,330 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:17,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 21:19:17,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:17,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 21:19:17,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2024-10-11 21:19:17,331 INFO L87 Difference]: Start difference. First operand 198 states and 227 transitions. Second operand has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:17,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:17,678 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2024-10-11 21:19:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 21:19:17,678 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2024-10-11 21:19:17,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:17,680 INFO L225 Difference]: With dead ends: 205 [2024-10-11 21:19:17,680 INFO L226 Difference]: Without dead ends: 204 [2024-10-11 21:19:17,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-10-11 21:19:17,680 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 85 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:17,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 574 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:19:17,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-10-11 21:19:17,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2024-10-11 21:19:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 145 states have (on average 1.4) internal successors, (203), 182 states have internal predecessors, (203), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-11 21:19:17,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 226 transitions. [2024-10-11 21:19:17,695 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 226 transitions. Word has length 53 [2024-10-11 21:19:17,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:17,695 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 226 transitions. [2024-10-11 21:19:17,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:17,695 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 226 transitions. [2024-10-11 21:19:17,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-11 21:19:17,696 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:17,696 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:17,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-11 21:19:17,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-11 21:19:17,901 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting func_to_recursive_line_26_to_34_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:19:17,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1482821444, now seen corresponding path program 1 times [2024-10-11 21:19:17,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:17,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615997776] [2024-10-11 21:19:17,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:17,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:17,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203748544] [2024-10-11 21:19:17,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:17,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:17,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:17,930 INFO L229 MonitoredProcess]: Starting monitored process 20 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 21:19:17,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 21:19:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:18,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-11 21:19:18,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:18,069 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 21:19:18,226 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 21:19:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:18,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:22,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:22,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615997776] [2024-10-11 21:19:22,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:22,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203748544] [2024-10-11 21:19:22,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203748544] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:19:22,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 21:19:22,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-10-11 21:19:22,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425555195] [2024-10-11 21:19:22,917 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:22,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 21:19:22,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:22,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 21:19:22,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=317, Unknown=1, NotChecked=0, Total=380 [2024-10-11 21:19:22,918 INFO L87 Difference]: Start difference. First operand 198 states and 226 transitions. Second operand has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:23,349 INFO L93 Difference]: Finished difference Result 204 states and 226 transitions. [2024-10-11 21:19:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 21:19:23,350 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-10-11 21:19:23,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:23,351 INFO L225 Difference]: With dead ends: 204 [2024-10-11 21:19:23,351 INFO L226 Difference]: Without dead ends: 203 [2024-10-11 21:19:23,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=121, Invalid=528, Unknown=1, NotChecked=0, Total=650 [2024-10-11 21:19:23,352 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 82 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:23,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 763 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:19:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-10-11 21:19:23,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 198. [2024-10-11 21:19:23,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 145 states have (on average 1.393103448275862) internal successors, (202), 182 states have internal predecessors, (202), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-11 21:19:23,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 225 transitions. [2024-10-11 21:19:23,365 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 225 transitions. Word has length 54 [2024-10-11 21:19:23,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:23,365 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 225 transitions. [2024-10-11 21:19:23,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.166666666666667) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 21:19:23,365 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 225 transitions. [2024-10-11 21:19:23,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 21:19:23,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:23,366 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:23,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-11 21:19:23,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:23,566 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting func_to_recursive_line_26_to_34_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:19:23,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:23,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1277175383, now seen corresponding path program 1 times [2024-10-11 21:19:23,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:23,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679179468] [2024-10-11 21:19:23,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:23,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:23,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725559992] [2024-10-11 21:19:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:23,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:23,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:23,592 INFO L229 MonitoredProcess]: Starting monitored process 21 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 21:19:23,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-11 21:19:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:23,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-10-11 21:19:23,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:23,724 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 21:19:23,729 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 21:19:23,897 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 21:19:23,963 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 21:19:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:24,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:25,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:25,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679179468] [2024-10-11 21:19:25,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:25,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725559992] [2024-10-11 21:19:25,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725559992] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:25,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 21:19:25,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2024-10-11 21:19:25,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911906341] [2024-10-11 21:19:25,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:25,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-11 21:19:25,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-11 21:19:25,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2024-10-11 21:19:25,514 INFO L87 Difference]: Start difference. First operand 198 states and 225 transitions. Second operand has 31 states, 28 states have (on average 3.642857142857143) internal successors, (102), 27 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:33,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-10-11 21:19:38,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-10-11 21:19:39,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-10-11 21:19:42,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:19:42,025 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2024-10-11 21:19:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-11 21:19:42,025 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.642857142857143) internal successors, (102), 27 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-10-11 21:19:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:19:42,026 INFO L225 Difference]: With dead ends: 202 [2024-10-11 21:19:42,026 INFO L226 Difference]: Without dead ends: 199 [2024-10-11 21:19:42,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=494, Invalid=2586, Unknown=0, NotChecked=0, Total=3080 [2024-10-11 21:19:42,027 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 493 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 47 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:19:42,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 670 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1039 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2024-10-11 21:19:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-10-11 21:19:42,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2024-10-11 21:19:42,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 145 states have (on average 1.3586206896551725) internal successors, (197), 180 states have internal predecessors, (197), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-10-11 21:19:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2024-10-11 21:19:42,039 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 55 [2024-10-11 21:19:42,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:19:42,040 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2024-10-11 21:19:42,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.642857142857143) internal successors, (102), 27 states have internal predecessors, (102), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 21:19:42,040 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2024-10-11 21:19:42,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-11 21:19:42,040 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:19:42,041 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:19:42,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-11 21:19:42,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-11 21:19:42,241 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_26_to_34_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-11 21:19:42,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:19:42,242 INFO L85 PathProgramCache]: Analyzing trace with hash 995107147, now seen corresponding path program 1 times [2024-10-11 21:19:42,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:19:42,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588748099] [2024-10-11 21:19:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:42,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:19:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:19:42,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023287225] [2024-10-11 21:19:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:19:42,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:19:42,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:19:42,264 INFO L229 MonitoredProcess]: Starting monitored process 22 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 21:19:42,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-11 21:19:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:19:42,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-10-11 21:19:42,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:19:42,395 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 21:19:42,399 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 21:19:42,568 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 21:19:42,632 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 21:19:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:19:42,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:19:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 21:19:44,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:19:44,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588748099] [2024-10-11 21:19:44,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:19:44,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023287225] [2024-10-11 21:19:44,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023287225] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:19:44,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 21:19:44,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 30 [2024-10-11 21:19:44,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989411720] [2024-10-11 21:19:44,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 21:19:44,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-11 21:19:44,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:19:44,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-11 21:19:44,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2024-10-11 21:19:44,580 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand has 31 states, 28 states have (on average 3.75) internal successors, (105), 28 states have internal predecessors, (105), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)