./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 56632fc3bb2b6db322c5e40eff8fe15b1c7affe1d35304d711252a046867d952 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 11:11:27,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 11:11:27,851 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 11:11:27,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 11:11:27,857 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 11:11:27,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 11:11:27,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 11:11:27,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 11:11:27,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 11:11:27,880 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 11:11:27,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 11:11:27,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 11:11:27,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 11:11:27,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 11:11:27,881 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 11:11:27,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 11:11:27,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 11:11:27,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 11:11:27,884 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 11:11:27,884 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 11:11:27,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 11:11:27,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 11:11:27,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 11:11:27,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 11:11:27,887 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 11:11:27,887 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 11:11:27,887 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 11:11:27,887 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 11:11:27,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 11:11:27,888 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 11:11:27,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 11:11:27,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 11:11:27,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 11:11:27,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 11:11:27,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:11:27,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 11:11:27,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 11:11:27,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 11:11:27,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 11:11:27,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 11:11:27,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 11:11:27,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 11:11:27,893 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 11:11:27,893 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 11:11:27,893 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56632fc3bb2b6db322c5e40eff8fe15b1c7affe1d35304d711252a046867d952 [2024-11-19 11:11:28,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 11:11:28,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 11:11:28,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 11:11:28,095 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 11:11:28,096 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 11:11:28,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd.c [2024-11-19 11:11:29,415 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 11:11:29,569 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 11:11:29,569 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd.c [2024-11-19 11:11:29,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e275020/9aeac9f58225464a8f65fa1b5fc75cc3/FLAG8279a437a [2024-11-19 11:11:29,982 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e275020/9aeac9f58225464a8f65fa1b5fc75cc3 [2024-11-19 11:11:29,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 11:11:29,986 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 11:11:29,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 11:11:29,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 11:11:29,992 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 11:11:29,993 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:11:29" (1/1) ... [2024-11-19 11:11:29,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750b714c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:29, skipping insertion in model container [2024-11-19 11:11:29,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:11:29" (1/1) ... [2024-11-19 11:11:30,013 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 11:11:30,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:11:30,185 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 11:11:30,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:11:30,223 INFO L204 MainTranslator]: Completed translation [2024-11-19 11:11:30,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30 WrapperNode [2024-11-19 11:11:30,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 11:11:30,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 11:11:30,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 11:11:30,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 11:11:30,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,276 INFO L138 Inliner]: procedures = 16, calls = 114, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 151 [2024-11-19 11:11:30,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 11:11:30,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 11:11:30,277 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 11:11:30,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 11:11:30,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,295 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,311 INFO L175 MemorySlicer]: Split 73 memory accesses to 10 slices as follows [2, 7, 8, 8, 8, 8, 8, 10, 7, 7]. 14 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0, 0, 0, 0, 0, 0, 0]. The 14 writes are split as follows [0, 0, 2, 2, 2, 2, 2, 2, 1, 1]. [2024-11-19 11:11:30,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 11:11:30,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 11:11:30,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 11:11:30,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 11:11:30,327 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (1/1) ... [2024-11-19 11:11:30,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:11:30,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:30,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 11:11:30,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 11:11:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 11:11:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_48_0 [2024-11-19 11:11:30,406 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_48_0 [2024-11-19 11:11:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 11:11:30,407 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 11:11:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 11:11:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 11:11:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 11:11:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 11:11:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 11:11:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 11:11:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-19 11:11:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-19 11:11:30,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-19 11:11:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-19 11:11:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 11:11:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 11:11:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 11:11:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 11:11:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 11:11:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 11:11:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 11:11:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-19 11:11:30,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-19 11:11:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-19 11:11:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-19 11:11:30,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 11:11:30,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 11:11:30,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 11:11:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 11:11:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 11:11:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 11:11:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 11:11:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 11:11:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-19 11:11:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-19 11:11:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-19 11:11:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-19 11:11:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 11:11:30,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 11:11:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 11:11:30,575 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 11:11:30,577 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 11:11:31,155 INFO L? ?]: Removed 165 outVars from TransFormulas that were not future-live. [2024-11-19 11:11:31,155 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 11:11:31,168 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 11:11:31,168 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 11:11:31,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:11:31 BoogieIcfgContainer [2024-11-19 11:11:31,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 11:11:31,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 11:11:31,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 11:11:31,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 11:11:31,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:11:29" (1/3) ... [2024-11-19 11:11:31,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7075622b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:11:31, skipping insertion in model container [2024-11-19 11:11:31,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:30" (2/3) ... [2024-11-19 11:11:31,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7075622b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:11:31, skipping insertion in model container [2024-11-19 11:11:31,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:11:31" (3/3) ... [2024-11-19 11:11:31,175 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd.c [2024-11-19 11:11:31,190 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 11:11:31,190 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-11-19 11:11:31,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 11:11:31,253 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;@797aee5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 11:11:31,254 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-11-19 11:11:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 83 states have (on average 1.7349397590361446) internal successors, (144), 140 states have internal predecessors, (144), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 11:11:31,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 11:11:31,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:31,268 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:31,268 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:31,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash 102717811, now seen corresponding path program 1 times [2024-11-19 11:11:31,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:31,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788520662] [2024-11-19 11:11:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:31,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 11:11:31,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:31,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788520662] [2024-11-19 11:11:31,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788520662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:31,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113970050] [2024-11-19 11:11:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:31,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:31,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:31,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:31,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 11:11:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:31,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 11:11:31,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 11:11:31,651 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:31,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113970050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:31,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:31,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 11:11:31,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794453526] [2024-11-19 11:11:31,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:31,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 11:11:31,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:31,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 11:11:31,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 11:11:31,679 INFO L87 Difference]: Start difference. First operand has 154 states, 83 states have (on average 1.7349397590361446) internal successors, (144), 140 states have internal predecessors, (144), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:11:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:31,713 INFO L93 Difference]: Finished difference Result 304 states and 338 transitions. [2024-11-19 11:11:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 11:11:31,716 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-19 11:11:31,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:31,722 INFO L225 Difference]: With dead ends: 304 [2024-11-19 11:11:31,723 INFO L226 Difference]: Without dead ends: 147 [2024-11-19 11:11:31,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 11:11:31,730 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:31,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:11:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-19 11:11:31,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-19 11:11:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 134 states have internal predecessors, (135), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-19 11:11:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 155 transitions. [2024-11-19 11:11:31,776 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 155 transitions. Word has length 18 [2024-11-19 11:11:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:31,776 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 155 transitions. [2024-11-19 11:11:31,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:11:31,777 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 155 transitions. [2024-11-19 11:11:31,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 11:11:31,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:31,779 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:31,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 11:11:31,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 11:11:31,984 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:31,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:31,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1717746065, now seen corresponding path program 1 times [2024-11-19 11:11:31,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:31,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021750129] [2024-11-19 11:11:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:31,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:32,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973770470] [2024-11-19 11:11:32,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:32,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:32,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:32,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:32,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 11:11:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:32,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 11:11:32,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:32,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:32,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:32,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:32,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:32,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021750129] [2024-11-19 11:11:32,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:32,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973770470] [2024-11-19 11:11:32,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973770470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:32,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:32,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:11:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554783824] [2024-11-19 11:11:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:32,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:11:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:11:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:11:32,262 INFO L87 Difference]: Start difference. First operand 147 states and 155 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:11:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:32,474 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2024-11-19 11:11:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:11:32,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-11-19 11:11:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:32,478 INFO L225 Difference]: With dead ends: 244 [2024-11-19 11:11:32,478 INFO L226 Difference]: Without dead ends: 243 [2024-11-19 11:11:32,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:32,480 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 159 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:32,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 659 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:11:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-19 11:11:32,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 176. [2024-11-19 11:11:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 103 states have (on average 1.7281553398058251) internal successors, (178), 159 states have internal predecessors, (178), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-19 11:11:32,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 205 transitions. [2024-11-19 11:11:32,513 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 205 transitions. Word has length 18 [2024-11-19 11:11:32,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:32,513 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 205 transitions. [2024-11-19 11:11:32,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:11:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 205 transitions. [2024-11-19 11:11:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 11:11:32,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:32,514 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:32,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 11:11:32,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-19 11:11:32,715 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:32,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:32,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1710520426, now seen corresponding path program 1 times [2024-11-19 11:11:32,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:32,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9611698] [2024-11-19 11:11:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:32,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:32,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132379645] [2024-11-19 11:11:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:32,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:32,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:32,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:32,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 11:11:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:32,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 11:11:32,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:32,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:32,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:32,929 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:32,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:32,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9611698] [2024-11-19 11:11:32,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:32,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132379645] [2024-11-19 11:11:32,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132379645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:32,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:32,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:11:32,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167855485] [2024-11-19 11:11:32,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:32,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:11:32,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:32,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:11:32,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:11:32,931 INFO L87 Difference]: Start difference. First operand 176 states and 205 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:11:33,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:33,102 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2024-11-19 11:11:33,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:11:33,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-11-19 11:11:33,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:33,104 INFO L225 Difference]: With dead ends: 243 [2024-11-19 11:11:33,104 INFO L226 Difference]: Without dead ends: 242 [2024-11-19 11:11:33,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:33,105 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 156 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:33,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 661 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:11:33,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-19 11:11:33,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 176. [2024-11-19 11:11:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 103 states have (on average 1.7184466019417475) internal successors, (177), 159 states have internal predecessors, (177), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-19 11:11:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 204 transitions. [2024-11-19 11:11:33,123 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 204 transitions. Word has length 19 [2024-11-19 11:11:33,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:33,123 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 204 transitions. [2024-11-19 11:11:33,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:11:33,124 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 204 transitions. [2024-11-19 11:11:33,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 11:11:33,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:33,126 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:33,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 11:11:33,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:33,328 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_33_to_48_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:33,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1486525615, now seen corresponding path program 1 times [2024-11-19 11:11:33,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:33,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638902396] [2024-11-19 11:11:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:33,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:33,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774308770] [2024-11-19 11:11:33,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:33,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:33,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:33,384 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:33,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 11:11:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:33,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 11:11:33,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:33,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:33,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:33,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:33,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638902396] [2024-11-19 11:11:33,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:33,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774308770] [2024-11-19 11:11:33,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774308770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:33,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:33,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:11:33,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475483121] [2024-11-19 11:11:33,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:33,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:11:33,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:33,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:11:33,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:11:33,523 INFO L87 Difference]: Start difference. First operand 176 states and 204 transitions. Second operand has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:11:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:33,658 INFO L93 Difference]: Finished difference Result 290 states and 328 transitions. [2024-11-19 11:11:33,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:11:33,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-19 11:11:33,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:33,661 INFO L225 Difference]: With dead ends: 290 [2024-11-19 11:11:33,661 INFO L226 Difference]: Without dead ends: 288 [2024-11-19 11:11:33,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:11:33,666 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 167 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:33,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 678 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:11:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-19 11:11:33,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 215. [2024-11-19 11:11:33,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 136 states have (on average 1.7058823529411764) internal successors, (232), 193 states have internal predecessors, (232), 17 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-19 11:11:33,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 270 transitions. [2024-11-19 11:11:33,682 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 270 transitions. Word has length 20 [2024-11-19 11:11:33,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:33,682 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 270 transitions. [2024-11-19 11:11:33,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:11:33,683 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 270 transitions. [2024-11-19 11:11:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 11:11:33,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:33,683 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:33,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 11:11:33,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:33,888 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_33_to_48_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:33,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1672994867, now seen corresponding path program 1 times [2024-11-19 11:11:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:33,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133784577] [2024-11-19 11:11:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:33,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:33,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274414109] [2024-11-19 11:11:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:33,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:33,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:33,922 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:33,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 11:11:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:34,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-19 11:11:34,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:34,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:34,033 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 [2024-11-19 11:11:34,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:34,155 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:34,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133784577] [2024-11-19 11:11:34,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274414109] [2024-11-19 11:11:34,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274414109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:34,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:34,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:11:34,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670648067] [2024-11-19 11:11:34,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:34,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:11:34,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:11:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:11:34,157 INFO L87 Difference]: Start difference. First operand 215 states and 270 transitions. Second operand has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:11:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:34,345 INFO L93 Difference]: Finished difference Result 275 states and 319 transitions. [2024-11-19 11:11:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:11:34,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-19 11:11:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:34,347 INFO L225 Difference]: With dead ends: 275 [2024-11-19 11:11:34,347 INFO L226 Difference]: Without dead ends: 273 [2024-11-19 11:11:34,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:11:34,348 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 144 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:34,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 761 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:11:34,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-19 11:11:34,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 215. [2024-11-19 11:11:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 136 states have (on average 1.6911764705882353) internal successors, (230), 193 states have internal predecessors, (230), 17 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-19 11:11:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 268 transitions. [2024-11-19 11:11:34,357 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 268 transitions. Word has length 22 [2024-11-19 11:11:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:34,357 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 268 transitions. [2024-11-19 11:11:34,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 11:11:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 268 transitions. [2024-11-19 11:11:34,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 11:11:34,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:34,358 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:34,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 11:11:34,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:34,563 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_33_to_48_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:34,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:34,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2003485438, now seen corresponding path program 1 times [2024-11-19 11:11:34,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:34,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232847376] [2024-11-19 11:11:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:34,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:34,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880589515] [2024-11-19 11:11:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:34,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:34,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:34,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:34,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 11:11:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:34,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 11:11:34,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:34,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:34,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:34,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:34,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232847376] [2024-11-19 11:11:34,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:34,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880589515] [2024-11-19 11:11:34,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880589515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:34,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:34,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 11:11:34,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339202345] [2024-11-19 11:11:34,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:34,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 11:11:34,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:34,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 11:11:34,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 11:11:34,761 INFO L87 Difference]: Start difference. First operand 215 states and 268 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:34,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:34,972 INFO L93 Difference]: Finished difference Result 387 states and 458 transitions. [2024-11-19 11:11:34,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:11:34,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-19 11:11:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:34,974 INFO L225 Difference]: With dead ends: 387 [2024-11-19 11:11:34,974 INFO L226 Difference]: Without dead ends: 385 [2024-11-19 11:11:34,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-19 11:11:34,975 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 284 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:34,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 675 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:11:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-19 11:11:34,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 283. [2024-11-19 11:11:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 194 states have (on average 1.6958762886597938) internal successors, (329), 252 states have internal predecessors, (329), 24 states have call successors, (24), 7 states have call predecessors, (24), 9 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-19 11:11:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 384 transitions. [2024-11-19 11:11:34,989 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 384 transitions. Word has length 30 [2024-11-19 11:11:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:34,989 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 384 transitions. [2024-11-19 11:11:34,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:34,990 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 384 transitions. [2024-11-19 11:11:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 11:11:34,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:34,990 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:35,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 11:11:35,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:35,192 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_33_to_48_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:35,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:35,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1204155676, now seen corresponding path program 1 times [2024-11-19 11:11:35,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:35,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538922440] [2024-11-19 11:11:35,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:35,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:35,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708725487] [2024-11-19 11:11:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:35,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:35,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:35,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:35,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 11:11:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:35,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 11:11:35,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:35,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:11:35,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:35,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:11:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:11:35,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:11:35,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:35,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538922440] [2024-11-19 11:11:35,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:35,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708725487] [2024-11-19 11:11:35,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708725487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:35,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:35,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-19 11:11:35,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015327568] [2024-11-19 11:11:35,735 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:11:35,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 11:11:35,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:35,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 11:11:35,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:11:35,736 INFO L87 Difference]: Start difference. First operand 283 states and 384 transitions. Second operand has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:11:39,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:11:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:40,109 INFO L93 Difference]: Finished difference Result 387 states and 453 transitions. [2024-11-19 11:11:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 11:11:40,109 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-11-19 11:11:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:40,111 INFO L225 Difference]: With dead ends: 387 [2024-11-19 11:11:40,111 INFO L226 Difference]: Without dead ends: 386 [2024-11-19 11:11:40,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-19 11:11:40,112 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 466 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:40,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 975 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 273 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-19 11:11:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-19 11:11:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 287. [2024-11-19 11:11:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 197 states have (on average 1.6751269035532994) internal successors, (330), 255 states have internal predecessors, (330), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-19 11:11:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 385 transitions. [2024-11-19 11:11:40,123 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 385 transitions. Word has length 32 [2024-11-19 11:11:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:40,124 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 385 transitions. [2024-11-19 11:11:40,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:11:40,124 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 385 transitions. [2024-11-19 11:11:40,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 11:11:40,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:40,124 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:40,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 11:11:40,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:40,328 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_33_to_48_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:40,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:40,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1325879763, now seen corresponding path program 1 times [2024-11-19 11:11:40,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:40,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30177235] [2024-11-19 11:11:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:40,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:40,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017489209] [2024-11-19 11:11:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:40,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:40,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:40,382 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:40,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 11:11:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:40,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 11:11:40,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:40,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:11:40,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:40,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 11:11:40,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-19 11:11:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:11:40,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:11:44,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30177235] [2024-11-19 11:11:44,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017489209] [2024-11-19 11:11:44,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017489209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:44,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:44,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-19 11:11:44,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225002549] [2024-11-19 11:11:44,360 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:11:44,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 11:11:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 11:11:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=162, Unknown=1, NotChecked=0, Total=210 [2024-11-19 11:11:44,361 INFO L87 Difference]: Start difference. First operand 287 states and 385 transitions. Second operand has 13 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:11:48,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:11:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:48,952 INFO L93 Difference]: Finished difference Result 386 states and 451 transitions. [2024-11-19 11:11:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 11:11:48,952 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-19 11:11:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:48,954 INFO L225 Difference]: With dead ends: 386 [2024-11-19 11:11:48,954 INFO L226 Difference]: Without dead ends: 385 [2024-11-19 11:11:48,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=89, Invalid=330, Unknown=1, NotChecked=0, Total=420 [2024-11-19 11:11:48,955 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 526 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:48,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1028 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 311 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-19 11:11:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-19 11:11:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 287. [2024-11-19 11:11:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 197 states have (on average 1.6649746192893402) internal successors, (328), 255 states have internal predecessors, (328), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-19 11:11:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2024-11-19 11:11:48,968 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 33 [2024-11-19 11:11:48,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:48,968 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2024-11-19 11:11:48,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 11:11:48,968 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2024-11-19 11:11:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-19 11:11:48,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:48,969 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:48,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 11:11:49,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-19 11:11:49,170 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_33_to_48_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:49,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1847400250, now seen corresponding path program 1 times [2024-11-19 11:11:49,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:49,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260286476] [2024-11-19 11:11:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:49,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:49,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808099821] [2024-11-19 11:11:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:49,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:49,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:49,220 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:49,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 11:11:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:49,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-19 11:11:49,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:49,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:11:49,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:11:49,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:49,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:49,539 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 7 treesize of output 3 [2024-11-19 11:11:49,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 11:11:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:49,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:49,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:49,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260286476] [2024-11-19 11:11:49,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:49,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808099821] [2024-11-19 11:11:49,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808099821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:49,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:49,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 11:11:49,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915220158] [2024-11-19 11:11:49,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:49,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 11:11:49,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:49,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 11:11:49,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:11:49,586 INFO L87 Difference]: Start difference. First operand 287 states and 383 transitions. Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:49,977 INFO L93 Difference]: Finished difference Result 381 states and 445 transitions. [2024-11-19 11:11:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:11:49,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2024-11-19 11:11:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:49,979 INFO L225 Difference]: With dead ends: 381 [2024-11-19 11:11:49,979 INFO L226 Difference]: Without dead ends: 380 [2024-11-19 11:11:49,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:11:49,980 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 437 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:49,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 755 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:11:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-19 11:11:49,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 287. [2024-11-19 11:11:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 197 states have (on average 1.6548223350253808) internal successors, (326), 255 states have internal predecessors, (326), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-19 11:11:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 381 transitions. [2024-11-19 11:11:49,996 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 381 transitions. Word has length 34 [2024-11-19 11:11:49,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:49,996 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 381 transitions. [2024-11-19 11:11:49,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 381 transitions. [2024-11-19 11:11:49,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 11:11:49,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:49,999 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:11:50,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 11:11:50,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:50,200 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_33_to_48_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:50,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:50,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1434832843, now seen corresponding path program 1 times [2024-11-19 11:11:50,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:50,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155825282] [2024-11-19 11:11:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:50,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:50,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080221837] [2024-11-19 11:11:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:50,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:50,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:50,232 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:50,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 11:11:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:50,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-19 11:11:50,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:50,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:11:50,368 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 15 treesize of output 1 [2024-11-19 11:11:50,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:50,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:50,585 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 7 treesize of output 3 [2024-11-19 11:11:50,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:11:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:50,636 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:11:50,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155825282] [2024-11-19 11:11:50,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080221837] [2024-11-19 11:11:50,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080221837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:11:50,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:11:50,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 11:11:50,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626818753] [2024-11-19 11:11:50,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:11:50,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 11:11:50,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:50,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 11:11:50,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:11:50,638 INFO L87 Difference]: Start difference. First operand 287 states and 381 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:51,100 INFO L93 Difference]: Finished difference Result 380 states and 443 transitions. [2024-11-19 11:11:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:11:51,100 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-11-19 11:11:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:51,105 INFO L225 Difference]: With dead ends: 380 [2024-11-19 11:11:51,105 INFO L226 Difference]: Without dead ends: 379 [2024-11-19 11:11:51,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:11:51,105 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 393 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:51,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 840 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:11:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-19 11:11:51,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 287. [2024-11-19 11:11:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 197 states have (on average 1.6446700507614214) internal successors, (324), 255 states have internal predecessors, (324), 24 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-19 11:11:51,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 379 transitions. [2024-11-19 11:11:51,120 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 379 transitions. Word has length 35 [2024-11-19 11:11:51,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:51,120 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 379 transitions. [2024-11-19 11:11:51,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 11:11:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 379 transitions. [2024-11-19 11:11:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 11:11:51,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:51,121 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] [2024-11-19 11:11:51,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 11:11:51,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 11:11:51,322 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_33_to_48_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:51,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1163856245, now seen corresponding path program 1 times [2024-11-19 11:11:51,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:51,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645159184] [2024-11-19 11:11:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:51,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:51,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706008938] [2024-11-19 11:11:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:51,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:51,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:51,348 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:51,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 11:11:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:51,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 11:11:51,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:51,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:11:51,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:51,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:11:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:51,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:11:51,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:51,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645159184] [2024-11-19 11:11:51,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:51,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706008938] [2024-11-19 11:11:51,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706008938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:51,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:51,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-19 11:11:51,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130953684] [2024-11-19 11:11:51,780 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:11:51,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 11:11:51,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:51,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 11:11:51,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:11:51,781 INFO L87 Difference]: Start difference. First operand 287 states and 379 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 11 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 11:11:55,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:11:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:11:56,221 INFO L93 Difference]: Finished difference Result 433 states and 511 transitions. [2024-11-19 11:11:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 11:11:56,222 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 11 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2024-11-19 11:11:56,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:11:56,224 INFO L225 Difference]: With dead ends: 433 [2024-11-19 11:11:56,224 INFO L226 Difference]: Without dead ends: 432 [2024-11-19 11:11:56,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-19 11:11:56,225 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 373 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:11:56,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1189 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 335 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-19 11:11:56,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-19 11:11:56,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 343. [2024-11-19 11:11:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.6571428571428573) internal successors, (406), 303 states have internal predecessors, (406), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-11-19 11:11:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 473 transitions. [2024-11-19 11:11:56,241 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 473 transitions. Word has length 42 [2024-11-19 11:11:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:11:56,241 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 473 transitions. [2024-11-19 11:11:56,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 11 states have internal predecessors, (30), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 11:11:56,241 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 473 transitions. [2024-11-19 11:11:56,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-19 11:11:56,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:11:56,242 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] [2024-11-19 11:11:56,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 11:11:56,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 11:11:56,443 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_33_to_48_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:11:56,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:11:56,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1719805162, now seen corresponding path program 1 times [2024-11-19 11:11:56,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:11:56,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639933516] [2024-11-19 11:11:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:56,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:11:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:11:56,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157256743] [2024-11-19 11:11:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:11:56,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:11:56,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:11:56,470 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:11:56,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 11:11:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:11:56,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 11:11:56,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:11:56,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:11:56,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:11:56,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:11:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 11:11:56,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:11:57,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:11:57,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639933516] [2024-11-19 11:11:57,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:11:57,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157256743] [2024-11-19 11:11:57,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157256743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:11:57,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:11:57,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-19 11:11:57,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337313359] [2024-11-19 11:11:57,085 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:11:57,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 11:11:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:11:57,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 11:11:57,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:11:57,086 INFO L87 Difference]: Start difference. First operand 343 states and 473 transitions. Second operand has 12 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 11:12:01,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:12:01,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:01,549 INFO L93 Difference]: Finished difference Result 432 states and 509 transitions. [2024-11-19 11:12:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 11:12:01,550 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2024-11-19 11:12:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:01,551 INFO L225 Difference]: With dead ends: 432 [2024-11-19 11:12:01,551 INFO L226 Difference]: Without dead ends: 431 [2024-11-19 11:12:01,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2024-11-19 11:12:01,552 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 435 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:01,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1076 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 290 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-19 11:12:01,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-19 11:12:01,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 343. [2024-11-19 11:12:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.6489795918367347) internal successors, (404), 303 states have internal predecessors, (404), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-11-19 11:12:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 471 transitions. [2024-11-19 11:12:01,570 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 471 transitions. Word has length 43 [2024-11-19 11:12:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:01,571 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 471 transitions. [2024-11-19 11:12:01,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 11:12:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 471 transitions. [2024-11-19 11:12:01,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-19 11:12:01,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:01,574 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] [2024-11-19 11:12:01,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 11:12:01,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 11:12:01,778 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_33_to_48_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:01,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:01,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1774352403, now seen corresponding path program 1 times [2024-11-19 11:12:01,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943063817] [2024-11-19 11:12:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:01,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536926422] [2024-11-19 11:12:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:01,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:01,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:01,818 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:01,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 11:12:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:01,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 11:12:01,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:01,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:01,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:02,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:12:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 11:12:02,123 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:02,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:02,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943063817] [2024-11-19 11:12:02,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:02,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536926422] [2024-11-19 11:12:02,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536926422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:02,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:02,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 11:12:02,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620012214] [2024-11-19 11:12:02,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:02,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 11:12:02,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 11:12:02,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-19 11:12:02,125 INFO L87 Difference]: Start difference. First operand 343 states and 471 transitions. Second operand has 11 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 11:12:02,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:02,407 INFO L93 Difference]: Finished difference Result 441 states and 519 transitions. [2024-11-19 11:12:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 11:12:02,408 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 44 [2024-11-19 11:12:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:02,409 INFO L225 Difference]: With dead ends: 441 [2024-11-19 11:12:02,409 INFO L226 Difference]: Without dead ends: 440 [2024-11-19 11:12:02,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:12:02,410 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 359 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:02,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1067 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:12:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-19 11:12:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 343. [2024-11-19 11:12:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.6408163265306122) internal successors, (402), 303 states have internal predecessors, (402), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-11-19 11:12:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 469 transitions. [2024-11-19 11:12:02,430 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 469 transitions. Word has length 44 [2024-11-19 11:12:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:02,430 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 469 transitions. [2024-11-19 11:12:02,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 11:12:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 469 transitions. [2024-11-19 11:12:02,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 11:12:02,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:02,432 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] [2024-11-19 11:12:02,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 11:12:02,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 11:12:02,632 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_33_to_48_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:02,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash 829650424, now seen corresponding path program 1 times [2024-11-19 11:12:02,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:02,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363388725] [2024-11-19 11:12:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:02,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:02,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352026903] [2024-11-19 11:12:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:02,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:02,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:02,661 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:02,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 11:12:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:02,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 11:12:02,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:02,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:02,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:03,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 11:12:03,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-11-19 11:12:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 11:12:03,245 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:03,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:03,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363388725] [2024-11-19 11:12:03,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:03,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352026903] [2024-11-19 11:12:03,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352026903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:03,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:03,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 11:12:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401436606] [2024-11-19 11:12:03,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:03,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 11:12:03,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:03,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 11:12:03,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-19 11:12:03,246 INFO L87 Difference]: Start difference. First operand 343 states and 469 transitions. Second operand has 13 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 11:12:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:03,735 INFO L93 Difference]: Finished difference Result 440 states and 517 transitions. [2024-11-19 11:12:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 11:12:03,737 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2024-11-19 11:12:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:03,738 INFO L225 Difference]: With dead ends: 440 [2024-11-19 11:12:03,738 INFO L226 Difference]: Without dead ends: 439 [2024-11-19 11:12:03,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-19 11:12:03,739 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 492 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:03,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 1045 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:12:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-11-19 11:12:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 343. [2024-11-19 11:12:03,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.6326530612244898) internal successors, (400), 303 states have internal predecessors, (400), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-11-19 11:12:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2024-11-19 11:12:03,767 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 45 [2024-11-19 11:12:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:03,767 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2024-11-19 11:12:03,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 11:12:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2024-11-19 11:12:03,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 11:12:03,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:03,768 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, 1] [2024-11-19 11:12:03,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 11:12:03,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:03,968 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_33_to_48_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:03,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash -50640561, now seen corresponding path program 1 times [2024-11-19 11:12:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:03,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348718646] [2024-11-19 11:12:03,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:03,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:03,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308020763] [2024-11-19 11:12:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:03,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:03,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:03,991 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:03,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 11:12:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:04,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-19 11:12:04,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:04,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:04,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:04,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:04,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 11:12:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 11:12:04,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:04,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:04,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348718646] [2024-11-19 11:12:04,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:04,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308020763] [2024-11-19 11:12:04,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308020763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:04,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:04,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 11:12:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139908663] [2024-11-19 11:12:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:04,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 11:12:04,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 11:12:04,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:12:04,426 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand has 10 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 11:12:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:04,766 INFO L93 Difference]: Finished difference Result 429 states and 503 transitions. [2024-11-19 11:12:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:12:04,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2024-11-19 11:12:04,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:04,769 INFO L225 Difference]: With dead ends: 429 [2024-11-19 11:12:04,769 INFO L226 Difference]: Without dead ends: 428 [2024-11-19 11:12:04,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:12:04,770 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 438 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:04,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 760 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:12:04,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-19 11:12:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 343. [2024-11-19 11:12:04,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.6244897959183673) internal successors, (398), 303 states have internal predecessors, (398), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-11-19 11:12:04,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 465 transitions. [2024-11-19 11:12:04,791 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 465 transitions. Word has length 46 [2024-11-19 11:12:04,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:04,791 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 465 transitions. [2024-11-19 11:12:04,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 11:12:04,791 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 465 transitions. [2024-11-19 11:12:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 11:12:04,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:04,792 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, 1, 1] [2024-11-19 11:12:04,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 11:12:04,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 11:12:04,992 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_33_to_48_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:04,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:04,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1569857318, now seen corresponding path program 1 times [2024-11-19 11:12:04,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:04,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930676809] [2024-11-19 11:12:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:04,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:05,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610777124] [2024-11-19 11:12:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:05,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:05,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:05,031 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:05,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 11:12:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:05,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 11:12:05,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:05,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:05,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:05,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:05,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:12:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 11:12:05,437 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:05,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:05,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930676809] [2024-11-19 11:12:05,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:05,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610777124] [2024-11-19 11:12:05,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610777124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:05,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:05,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 11:12:05,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235322137] [2024-11-19 11:12:05,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:05,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 11:12:05,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:05,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 11:12:05,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:12:05,439 INFO L87 Difference]: Start difference. First operand 343 states and 465 transitions. Second operand has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 11:12:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:05,925 INFO L93 Difference]: Finished difference Result 428 states and 501 transitions. [2024-11-19 11:12:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:12:05,925 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-19 11:12:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:05,927 INFO L225 Difference]: With dead ends: 428 [2024-11-19 11:12:05,927 INFO L226 Difference]: Without dead ends: 427 [2024-11-19 11:12:05,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:12:05,927 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 450 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:05,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 940 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:12:05,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-19 11:12:05,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 343. [2024-11-19 11:12:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 245 states have (on average 1.616326530612245) internal successors, (396), 303 states have internal predecessors, (396), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-11-19 11:12:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2024-11-19 11:12:05,961 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 47 [2024-11-19 11:12:05,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:05,961 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2024-11-19 11:12:05,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 11:12:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2024-11-19 11:12:05,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 11:12:05,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:05,962 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:05,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 11:12:06,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 11:12:06,163 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_33_to_48_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:06,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:06,164 INFO L85 PathProgramCache]: Analyzing trace with hash -110007538, now seen corresponding path program 1 times [2024-11-19 11:12:06,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:06,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383138015] [2024-11-19 11:12:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:06,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:06,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:06,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383138015] [2024-11-19 11:12:06,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383138015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:06,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:06,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 11:12:06,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906384839] [2024-11-19 11:12:06,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:06,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 11:12:06,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:06,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 11:12:06,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 11:12:06,869 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 11:12:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:06,907 INFO L93 Difference]: Finished difference Result 343 states and 463 transitions. [2024-11-19 11:12:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 11:12:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 56 [2024-11-19 11:12:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:06,909 INFO L225 Difference]: With dead ends: 343 [2024-11-19 11:12:06,909 INFO L226 Difference]: Without dead ends: 342 [2024-11-19 11:12:06,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 11:12:06,910 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 1 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:06,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 437 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:12:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-19 11:12:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2024-11-19 11:12:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 245 states have (on average 1.6081632653061224) internal successors, (394), 302 states have internal predecessors, (394), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-11-19 11:12:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 461 transitions. [2024-11-19 11:12:06,946 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 461 transitions. Word has length 56 [2024-11-19 11:12:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:06,946 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 461 transitions. [2024-11-19 11:12:06,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 11:12:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 461 transitions. [2024-11-19 11:12:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 11:12:06,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:06,947 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:06,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 11:12:06,947 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_33_to_48_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:06,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash -110007986, now seen corresponding path program 1 times [2024-11-19 11:12:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:06,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198317974] [2024-11-19 11:12:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:07,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:07,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198317974] [2024-11-19 11:12:07,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198317974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:07,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:07,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 11:12:07,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750727357] [2024-11-19 11:12:07,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:07,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 11:12:07,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:07,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 11:12:07,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 11:12:07,375 INFO L87 Difference]: Start difference. First operand 342 states and 461 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 11:12:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:07,416 INFO L93 Difference]: Finished difference Result 342 states and 461 transitions. [2024-11-19 11:12:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 11:12:07,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 56 [2024-11-19 11:12:07,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:07,418 INFO L225 Difference]: With dead ends: 342 [2024-11-19 11:12:07,419 INFO L226 Difference]: Without dead ends: 341 [2024-11-19 11:12:07,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 11:12:07,437 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 1 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:07,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 434 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:12:07,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-19 11:12:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2024-11-19 11:12:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 245 states have (on average 1.6) internal successors, (392), 301 states have internal predecessors, (392), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-11-19 11:12:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 459 transitions. [2024-11-19 11:12:07,457 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 459 transitions. Word has length 56 [2024-11-19 11:12:07,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:07,457 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 459 transitions. [2024-11-19 11:12:07,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 11:12:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 459 transitions. [2024-11-19 11:12:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 11:12:07,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:07,459 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:07,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 11:12:07,459 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_33_to_48_0Err25ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:07,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:07,460 INFO L85 PathProgramCache]: Analyzing trace with hash 884733718, now seen corresponding path program 1 times [2024-11-19 11:12:07,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:07,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261628928] [2024-11-19 11:12:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:07,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 11:12:07,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:07,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261628928] [2024-11-19 11:12:07,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261628928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:12:07,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601383485] [2024-11-19 11:12:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:07,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:07,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:07,902 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:07,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 11:12:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:08,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 11:12:08,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:08,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:08,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 11:12:08,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-19 11:12:08,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 11:12:08,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2024-11-19 11:12:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 11:12:08,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:12:08,978 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 27 treesize of output 19 [2024-11-19 11:12:09,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601383485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:12:09,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 11:12:09,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16] total 22 [2024-11-19 11:12:09,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084452324] [2024-11-19 11:12:09,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 11:12:09,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 11:12:09,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:09,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 11:12:09,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2024-11-19 11:12:09,224 INFO L87 Difference]: Start difference. First operand 341 states and 459 transitions. Second operand has 23 states, 17 states have (on average 4.647058823529412) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-19 11:12:13,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:12:18,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-19 11:12:23,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 11:12:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:23,225 INFO L93 Difference]: Finished difference Result 400 states and 484 transitions. [2024-11-19 11:12:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 11:12:23,225 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 4.647058823529412) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Word has length 57 [2024-11-19 11:12:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:23,227 INFO L225 Difference]: With dead ends: 400 [2024-11-19 11:12:23,227 INFO L226 Difference]: Without dead ends: 399 [2024-11-19 11:12:23,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=286, Invalid=1970, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 11:12:23,228 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 619 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 66 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:23,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 2100 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 658 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2024-11-19 11:12:23,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-11-19 11:12:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 341. [2024-11-19 11:12:23,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 245 states have (on average 1.5959183673469388) internal successors, (391), 301 states have internal predecessors, (391), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-11-19 11:12:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 458 transitions. [2024-11-19 11:12:23,248 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 458 transitions. Word has length 57 [2024-11-19 11:12:23,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:23,248 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 458 transitions. [2024-11-19 11:12:23,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 4.647058823529412) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-19 11:12:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 458 transitions. [2024-11-19 11:12:23,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 11:12:23,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:23,249 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:23,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 11:12:23,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:23,454 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_33_to_48_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:23,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:23,454 INFO L85 PathProgramCache]: Analyzing trace with hash 884719816, now seen corresponding path program 1 times [2024-11-19 11:12:23,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:23,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266113884] [2024-11-19 11:12:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:23,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 11:12:23,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:23,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266113884] [2024-11-19 11:12:23,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266113884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:23,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:23,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 11:12:23,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317629012] [2024-11-19 11:12:23,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:23,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 11:12:23,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:23,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 11:12:23,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-19 11:12:23,886 INFO L87 Difference]: Start difference. First operand 341 states and 458 transitions. Second operand has 11 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 11:12:24,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:24,157 INFO L93 Difference]: Finished difference Result 346 states and 463 transitions. [2024-11-19 11:12:24,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:12:24,157 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 57 [2024-11-19 11:12:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:24,159 INFO L225 Difference]: With dead ends: 346 [2024-11-19 11:12:24,159 INFO L226 Difference]: Without dead ends: 345 [2024-11-19 11:12:24,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-19 11:12:24,159 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 119 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:24,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1199 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:12:24,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-19 11:12:24,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2024-11-19 11:12:24,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 247 states have (on average 1.591093117408907) internal successors, (393), 303 states have internal predecessors, (393), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2024-11-19 11:12:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 460 transitions. [2024-11-19 11:12:24,180 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 460 transitions. Word has length 57 [2024-11-19 11:12:24,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:24,180 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 460 transitions. [2024-11-19 11:12:24,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 11:12:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 460 transitions. [2024-11-19 11:12:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-19 11:12:24,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:24,181 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:24,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 11:12:24,181 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:24,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:24,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1656672535, now seen corresponding path program 1 times [2024-11-19 11:12:24,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:24,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990631057] [2024-11-19 11:12:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:24,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:24,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:24,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990631057] [2024-11-19 11:12:24,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990631057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:24,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:24,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:12:24,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474723552] [2024-11-19 11:12:24,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:24,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:12:24,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:12:24,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:12:24,481 INFO L87 Difference]: Start difference. First operand 343 states and 460 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 11:12:24,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:24,688 INFO L93 Difference]: Finished difference Result 347 states and 466 transitions. [2024-11-19 11:12:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:12:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2024-11-19 11:12:24,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:24,690 INFO L225 Difference]: With dead ends: 347 [2024-11-19 11:12:24,690 INFO L226 Difference]: Without dead ends: 346 [2024-11-19 11:12:24,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:12:24,690 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 79 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:24,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 649 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:12:24,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-19 11:12:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2024-11-19 11:12:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 248 states have (on average 1.5806451612903225) internal successors, (392), 305 states have internal predecessors, (392), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2024-11-19 11:12:24,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 464 transitions. [2024-11-19 11:12:24,712 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 464 transitions. Word has length 58 [2024-11-19 11:12:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:24,712 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 464 transitions. [2024-11-19 11:12:24,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 11:12:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 464 transitions. [2024-11-19 11:12:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-19 11:12:24,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:24,713 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:24,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 11:12:24,713 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_33_to_48_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:24,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:24,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1656941584, now seen corresponding path program 1 times [2024-11-19 11:12:24,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:24,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471236280] [2024-11-19 11:12:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:24,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:24,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:24,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471236280] [2024-11-19 11:12:24,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471236280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:24,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:24,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:12:24,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762930211] [2024-11-19 11:12:24,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:24,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:12:24,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:12:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:12:24,949 INFO L87 Difference]: Start difference. First operand 346 states and 464 transitions. Second operand has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:25,091 INFO L93 Difference]: Finished difference Result 367 states and 474 transitions. [2024-11-19 11:12:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:12:25,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2024-11-19 11:12:25,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:25,094 INFO L225 Difference]: With dead ends: 367 [2024-11-19 11:12:25,094 INFO L226 Difference]: Without dead ends: 365 [2024-11-19 11:12:25,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:12:25,095 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 72 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:25,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 662 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:12:25,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-19 11:12:25,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 350. [2024-11-19 11:12:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 252 states have (on average 1.5714285714285714) internal successors, (396), 309 states have internal predecessors, (396), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2024-11-19 11:12:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 468 transitions. [2024-11-19 11:12:25,119 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 468 transitions. Word has length 58 [2024-11-19 11:12:25,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:25,120 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 468 transitions. [2024-11-19 11:12:25,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 468 transitions. [2024-11-19 11:12:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-19 11:12:25,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:25,120 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:25,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 11:12:25,121 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_33_to_48_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:25,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1656510608, now seen corresponding path program 1 times [2024-11-19 11:12:25,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:25,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254910337] [2024-11-19 11:12:25,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:25,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:25,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:25,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254910337] [2024-11-19 11:12:25,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254910337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:25,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:25,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:12:25,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730097384] [2024-11-19 11:12:25,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:25,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:12:25,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:25,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:12:25,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:12:25,353 INFO L87 Difference]: Start difference. First operand 350 states and 468 transitions. Second operand has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:25,523 INFO L93 Difference]: Finished difference Result 385 states and 478 transitions. [2024-11-19 11:12:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:12:25,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2024-11-19 11:12:25,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:25,525 INFO L225 Difference]: With dead ends: 385 [2024-11-19 11:12:25,525 INFO L226 Difference]: Without dead ends: 383 [2024-11-19 11:12:25,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:12:25,526 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 105 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:25,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 685 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:12:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-19 11:12:25,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 350. [2024-11-19 11:12:25,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 252 states have (on average 1.5634920634920635) internal successors, (394), 309 states have internal predecessors, (394), 31 states have call successors, (31), 10 states have call predecessors, (31), 13 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2024-11-19 11:12:25,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 466 transitions. [2024-11-19 11:12:25,551 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 466 transitions. Word has length 58 [2024-11-19 11:12:25,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:25,551 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 466 transitions. [2024-11-19 11:12:25,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:25,551 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 466 transitions. [2024-11-19 11:12:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 11:12:25,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:25,552 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:25,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 11:12:25,552 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:25,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:25,553 INFO L85 PathProgramCache]: Analyzing trace with hash -182758832, now seen corresponding path program 1 times [2024-11-19 11:12:25,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:25,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438978705] [2024-11-19 11:12:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:25,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:25,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:25,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438978705] [2024-11-19 11:12:25,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438978705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:25,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:25,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 11:12:25,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758336779] [2024-11-19 11:12:25,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:25,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 11:12:25,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 11:12:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:12:25,859 INFO L87 Difference]: Start difference. First operand 350 states and 466 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 11:12:26,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:26,082 INFO L93 Difference]: Finished difference Result 355 states and 473 transitions. [2024-11-19 11:12:26,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 11:12:26,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2024-11-19 11:12:26,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:26,085 INFO L225 Difference]: With dead ends: 355 [2024-11-19 11:12:26,085 INFO L226 Difference]: Without dead ends: 354 [2024-11-19 11:12:26,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 11:12:26,086 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 78 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:26,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 650 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:12:26,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-19 11:12:26,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2024-11-19 11:12:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 254 states have (on average 1.5511811023622046) internal successors, (394), 311 states have internal predecessors, (394), 31 states have call successors, (31), 10 states have call predecessors, (31), 15 states have return successors, (46), 32 states have call predecessors, (46), 31 states have call successors, (46) [2024-11-19 11:12:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 471 transitions. [2024-11-19 11:12:26,110 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 471 transitions. Word has length 59 [2024-11-19 11:12:26,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:26,111 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 471 transitions. [2024-11-19 11:12:26,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 11:12:26,113 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 471 transitions. [2024-11-19 11:12:26,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-19 11:12:26,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:26,114 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:26,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 11:12:26,114 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_33_to_48_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:26,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:26,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1112001262, now seen corresponding path program 1 times [2024-11-19 11:12:26,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:26,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466533808] [2024-11-19 11:12:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:26,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:26,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:26,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466533808] [2024-11-19 11:12:26,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466533808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:26,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:26,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:12:26,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737059756] [2024-11-19 11:12:26,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:26,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:12:26,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:26,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:12:26,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:12:26,339 INFO L87 Difference]: Start difference. First operand 354 states and 471 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:26,496 INFO L93 Difference]: Finished difference Result 395 states and 491 transitions. [2024-11-19 11:12:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:12:26,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-11-19 11:12:26,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:26,498 INFO L225 Difference]: With dead ends: 395 [2024-11-19 11:12:26,498 INFO L226 Difference]: Without dead ends: 393 [2024-11-19 11:12:26,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:12:26,499 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 108 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:26,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 657 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:12:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-19 11:12:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 354. [2024-11-19 11:12:26,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 254 states have (on average 1.5433070866141732) internal successors, (392), 311 states have internal predecessors, (392), 31 states have call successors, (31), 10 states have call predecessors, (31), 15 states have return successors, (46), 32 states have call predecessors, (46), 31 states have call successors, (46) [2024-11-19 11:12:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 469 transitions. [2024-11-19 11:12:26,523 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 469 transitions. Word has length 60 [2024-11-19 11:12:26,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:26,523 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 469 transitions. [2024-11-19 11:12:26,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:26,523 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 469 transitions. [2024-11-19 11:12:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-19 11:12:26,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:26,524 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:26,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 11:12:26,524 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_33_to_48_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:26,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:26,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1526169646, now seen corresponding path program 1 times [2024-11-19 11:12:26,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:26,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016857960] [2024-11-19 11:12:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:26,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:26,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016857960] [2024-11-19 11:12:26,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016857960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:26,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:26,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:12:26,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145920380] [2024-11-19 11:12:26,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:26,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:12:26,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:26,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:12:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:12:26,754 INFO L87 Difference]: Start difference. First operand 354 states and 469 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:26,891 INFO L93 Difference]: Finished difference Result 370 states and 477 transitions. [2024-11-19 11:12:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:12:26,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-11-19 11:12:26,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:26,893 INFO L225 Difference]: With dead ends: 370 [2024-11-19 11:12:26,893 INFO L226 Difference]: Without dead ends: 368 [2024-11-19 11:12:26,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:12:26,894 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 69 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:26,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 664 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:12:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-19 11:12:26,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 358. [2024-11-19 11:12:26,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 258 states have (on average 1.5348837209302326) internal successors, (396), 315 states have internal predecessors, (396), 31 states have call successors, (31), 10 states have call predecessors, (31), 15 states have return successors, (46), 32 states have call predecessors, (46), 31 states have call successors, (46) [2024-11-19 11:12:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 473 transitions. [2024-11-19 11:12:26,917 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 473 transitions. Word has length 60 [2024-11-19 11:12:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:26,918 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 473 transitions. [2024-11-19 11:12:26,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 473 transitions. [2024-11-19 11:12:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 11:12:26,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:26,919 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:26,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 11:12:26,919 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:26,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1423222683, now seen corresponding path program 1 times [2024-11-19 11:12:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:26,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194396137] [2024-11-19 11:12:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:26,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:26,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515630239] [2024-11-19 11:12:26,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:26,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:26,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:26,951 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:26,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 11:12:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:27,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-19 11:12:27,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:27,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:27,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:27,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:27,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:12:27,448 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 [2024-11-19 11:12:27,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:12:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:27,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:12:27,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:27,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194396137] [2024-11-19 11:12:27,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:27,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515630239] [2024-11-19 11:12:27,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515630239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:12:27,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:12:27,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-19 11:12:27,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250392842] [2024-11-19 11:12:27,853 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:12:27,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 11:12:27,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:27,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 11:12:27,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:12:27,854 INFO L87 Difference]: Start difference. First operand 358 states and 473 transitions. Second operand has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:28,175 INFO L93 Difference]: Finished difference Result 453 states and 559 transitions. [2024-11-19 11:12:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:12:28,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2024-11-19 11:12:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:28,178 INFO L225 Difference]: With dead ends: 453 [2024-11-19 11:12:28,178 INFO L226 Difference]: Without dead ends: 452 [2024-11-19 11:12:28,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2024-11-19 11:12:28,179 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 289 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:28,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 782 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:12:28,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-11-19 11:12:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 392. [2024-11-19 11:12:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 286 states have (on average 1.5244755244755244) internal successors, (436), 344 states have internal predecessors, (436), 35 states have call successors, (35), 11 states have call predecessors, (35), 17 states have return successors, (54), 36 states have call predecessors, (54), 35 states have call successors, (54) [2024-11-19 11:12:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 525 transitions. [2024-11-19 11:12:28,205 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 525 transitions. Word has length 65 [2024-11-19 11:12:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:28,205 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 525 transitions. [2024-11-19 11:12:28,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 525 transitions. [2024-11-19 11:12:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 11:12:28,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:28,206 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:28,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 11:12:28,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-19 11:12:28,406 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:28,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1666612375, now seen corresponding path program 1 times [2024-11-19 11:12:28,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:28,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127192044] [2024-11-19 11:12:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:28,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:28,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636644775] [2024-11-19 11:12:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:28,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:28,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:28,432 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:28,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 11:12:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:28,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-19 11:12:28,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:28,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:28,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:28,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:28,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:12:28,995 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 [2024-11-19 11:12:29,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:12:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:29,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:12:29,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:29,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127192044] [2024-11-19 11:12:29,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:29,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636644775] [2024-11-19 11:12:29,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636644775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:12:29,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:12:29,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-19 11:12:29,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607048777] [2024-11-19 11:12:29,388 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:12:29,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 11:12:29,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:29,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 11:12:29,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:12:29,389 INFO L87 Difference]: Start difference. First operand 392 states and 525 transitions. Second operand has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:29,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:29,754 INFO L93 Difference]: Finished difference Result 484 states and 608 transitions. [2024-11-19 11:12:29,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 11:12:29,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2024-11-19 11:12:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:29,756 INFO L225 Difference]: With dead ends: 484 [2024-11-19 11:12:29,756 INFO L226 Difference]: Without dead ends: 483 [2024-11-19 11:12:29,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2024-11-19 11:12:29,757 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 283 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:29,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 812 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:12:29,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-19 11:12:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 424. [2024-11-19 11:12:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 312 states have (on average 1.5128205128205128) internal successors, (472), 371 states have internal predecessors, (472), 39 states have call successors, (39), 12 states have call predecessors, (39), 19 states have return successors, (62), 40 states have call predecessors, (62), 39 states have call successors, (62) [2024-11-19 11:12:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 573 transitions. [2024-11-19 11:12:29,801 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 573 transitions. Word has length 65 [2024-11-19 11:12:29,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:29,801 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 573 transitions. [2024-11-19 11:12:29,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:29,802 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 573 transitions. [2024-11-19 11:12:29,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-19 11:12:29,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:29,803 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:29,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-19 11:12:30,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:30,003 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:30,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:30,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1067430488, now seen corresponding path program 1 times [2024-11-19 11:12:30,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:30,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192436266] [2024-11-19 11:12:30,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:30,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:30,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47980430] [2024-11-19 11:12:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:30,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:30,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:30,028 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:30,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 11:12:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:30,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 11:12:30,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:30,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 11:12:30,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:30,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:30,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:30,228 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 11 treesize of output 7 [2024-11-19 11:12:30,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 11:12:30,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:12:30,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:12:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 11:12:30,488 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:30,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192436266] [2024-11-19 11:12:30,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47980430] [2024-11-19 11:12:30,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47980430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:30,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:30,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 11:12:30,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432659231] [2024-11-19 11:12:30,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:30,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 11:12:30,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:30,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 11:12:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-19 11:12:30,492 INFO L87 Difference]: Start difference. First operand 424 states and 573 transitions. Second operand has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-19 11:12:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:31,109 INFO L93 Difference]: Finished difference Result 489 states and 596 transitions. [2024-11-19 11:12:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 11:12:31,110 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 66 [2024-11-19 11:12:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:31,111 INFO L225 Difference]: With dead ends: 489 [2024-11-19 11:12:31,112 INFO L226 Difference]: Without dead ends: 488 [2024-11-19 11:12:31,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-11-19 11:12:31,115 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 325 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 45 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:31,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1220 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 566 Invalid, 2 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:12:31,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-11-19 11:12:31,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 424. [2024-11-19 11:12:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 312 states have (on average 1.5096153846153846) internal successors, (471), 371 states have internal predecessors, (471), 39 states have call successors, (39), 12 states have call predecessors, (39), 19 states have return successors, (62), 40 states have call predecessors, (62), 39 states have call successors, (62) [2024-11-19 11:12:31,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 572 transitions. [2024-11-19 11:12:31,148 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 572 transitions. Word has length 66 [2024-11-19 11:12:31,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:31,148 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 572 transitions. [2024-11-19 11:12:31,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-19 11:12:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 572 transitions. [2024-11-19 11:12:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-19 11:12:31,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:31,150 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:31,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-19 11:12:31,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 11:12:31,351 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:31,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:31,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1170230176, now seen corresponding path program 1 times [2024-11-19 11:12:31,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:31,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928857889] [2024-11-19 11:12:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:31,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637797488] [2024-11-19 11:12:31,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:31,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:31,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:31,380 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:31,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 11:12:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:31,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-19 11:12:31,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:31,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:31,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:31,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:31,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 11:12:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:31,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:12:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:32,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:32,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928857889] [2024-11-19 11:12:32,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:32,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637797488] [2024-11-19 11:12:32,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637797488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:12:32,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 11:12:32,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2024-11-19 11:12:32,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054690714] [2024-11-19 11:12:32,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 11:12:32,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 11:12:32,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:32,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 11:12:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-19 11:12:32,544 INFO L87 Difference]: Start difference. First operand 424 states and 572 transitions. Second operand has 17 states, 14 states have (on average 6.0) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 11:12:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:34,623 INFO L93 Difference]: Finished difference Result 565 states and 687 transitions. [2024-11-19 11:12:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 11:12:34,623 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 6.0) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2024-11-19 11:12:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:34,625 INFO L225 Difference]: With dead ends: 565 [2024-11-19 11:12:34,626 INFO L226 Difference]: Without dead ends: 563 [2024-11-19 11:12:34,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2024-11-19 11:12:34,626 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 343 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:34,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1427 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-19 11:12:34,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-19 11:12:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 464. [2024-11-19 11:12:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 345 states have (on average 1.5159420289855072) internal successors, (523), 405 states have internal predecessors, (523), 43 states have call successors, (43), 13 states have call predecessors, (43), 22 states have return successors, (73), 45 states have call predecessors, (73), 43 states have call successors, (73) [2024-11-19 11:12:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 639 transitions. [2024-11-19 11:12:34,667 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 639 transitions. Word has length 66 [2024-11-19 11:12:34,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:34,667 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 639 transitions. [2024-11-19 11:12:34,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 6.0) internal successors, (84), 13 states have internal predecessors, (84), 7 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-19 11:12:34,668 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 639 transitions. [2024-11-19 11:12:34,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 11:12:34,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:34,668 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:34,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-19 11:12:34,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:34,869 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:34,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:34,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1269393381, now seen corresponding path program 1 times [2024-11-19 11:12:34,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:34,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424995512] [2024-11-19 11:12:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:34,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250221322] [2024-11-19 11:12:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:34,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:34,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:34,892 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:34,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 11:12:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:35,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-19 11:12:35,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:35,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:35,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 11:12:35,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-19 11:12:35,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:35,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:35,157 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 11 treesize of output 7 [2024-11-19 11:12:35,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:12:35,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 11:12:35,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 11:12:35,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 52 [2024-11-19 11:12:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 11:12:35,611 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:35,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:35,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424995512] [2024-11-19 11:12:35,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:35,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250221322] [2024-11-19 11:12:35,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250221322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:35,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:35,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-19 11:12:35,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368350043] [2024-11-19 11:12:35,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:35,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 11:12:35,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:35,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 11:12:35,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-19 11:12:35,613 INFO L87 Difference]: Start difference. First operand 464 states and 639 transitions. Second operand has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-19 11:12:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:36,352 INFO L93 Difference]: Finished difference Result 522 states and 655 transitions. [2024-11-19 11:12:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 11:12:36,353 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 67 [2024-11-19 11:12:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:36,354 INFO L225 Difference]: With dead ends: 522 [2024-11-19 11:12:36,354 INFO L226 Difference]: Without dead ends: 521 [2024-11-19 11:12:36,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2024-11-19 11:12:36,355 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 451 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 56 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:36,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 911 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 468 Invalid, 2 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 11:12:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-11-19 11:12:36,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 464. [2024-11-19 11:12:36,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 345 states have (on average 1.5130434782608695) internal successors, (522), 405 states have internal predecessors, (522), 43 states have call successors, (43), 13 states have call predecessors, (43), 22 states have return successors, (73), 45 states have call predecessors, (73), 43 states have call successors, (73) [2024-11-19 11:12:36,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 638 transitions. [2024-11-19 11:12:36,390 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 638 transitions. Word has length 67 [2024-11-19 11:12:36,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:36,391 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 638 transitions. [2024-11-19 11:12:36,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 5 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-19 11:12:36,391 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 638 transitions. [2024-11-19 11:12:36,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 11:12:36,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:36,391 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:36,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-19 11:12:36,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:36,596 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_33_to_48_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:36,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1917397049, now seen corresponding path program 1 times [2024-11-19 11:12:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:36,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985880381] [2024-11-19 11:12:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:36,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:36,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839724051] [2024-11-19 11:12:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:36,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:36,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:36,626 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:36,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-19 11:12:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:36,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-19 11:12:36,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:36,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:36,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:36,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:37,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-19 11:12:37,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 11:12:37,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 11:12:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:37,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:12:42,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:42,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985880381] [2024-11-19 11:12:42,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:42,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839724051] [2024-11-19 11:12:42,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839724051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:12:42,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:12:42,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-19 11:12:42,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432266506] [2024-11-19 11:12:42,563 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:12:42,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 11:12:42,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:42,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 11:12:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2024-11-19 11:12:42,564 INFO L87 Difference]: Start difference. First operand 464 states and 638 transitions. Second operand has 10 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:43,051 INFO L93 Difference]: Finished difference Result 521 states and 654 transitions. [2024-11-19 11:12:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 11:12:43,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2024-11-19 11:12:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:43,053 INFO L225 Difference]: With dead ends: 521 [2024-11-19 11:12:43,053 INFO L226 Difference]: Without dead ends: 519 [2024-11-19 11:12:43,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=139, Invalid=411, Unknown=2, NotChecked=0, Total=552 [2024-11-19 11:12:43,054 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 306 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:43,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1037 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:12:43,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-11-19 11:12:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 464. [2024-11-19 11:12:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 345 states have (on average 1.5043478260869565) internal successors, (519), 405 states have internal predecessors, (519), 43 states have call successors, (43), 13 states have call predecessors, (43), 22 states have return successors, (73), 45 states have call predecessors, (73), 43 states have call successors, (73) [2024-11-19 11:12:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 635 transitions. [2024-11-19 11:12:43,097 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 635 transitions. Word has length 67 [2024-11-19 11:12:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:43,099 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 635 transitions. [2024-11-19 11:12:43,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 635 transitions. [2024-11-19 11:12:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 11:12:43,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:43,099 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:43,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-19 11:12:43,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:43,300 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:43,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:43,300 INFO L85 PathProgramCache]: Analyzing trace with hash 696489290, now seen corresponding path program 1 times [2024-11-19 11:12:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:43,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373816083] [2024-11-19 11:12:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:43,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:43,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299065518] [2024-11-19 11:12:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:43,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:43,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:43,333 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:43,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-19 11:12:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:43,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 11:12:43,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:43,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:43,532 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:43,532 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:12:43,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:43,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373816083] [2024-11-19 11:12:43,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:43,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299065518] [2024-11-19 11:12:43,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299065518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:12:43,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:12:43,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 11:12:43,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998635670] [2024-11-19 11:12:43,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:12:43,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:12:43,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:43,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:12:43,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:12:43,533 INFO L87 Difference]: Start difference. First operand 464 states and 635 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 11:12:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:43,776 INFO L93 Difference]: Finished difference Result 513 states and 651 transitions. [2024-11-19 11:12:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 11:12:43,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2024-11-19 11:12:43,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:43,778 INFO L225 Difference]: With dead ends: 513 [2024-11-19 11:12:43,778 INFO L226 Difference]: Without dead ends: 511 [2024-11-19 11:12:43,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:12:43,778 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 188 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:43,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 533 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:12:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2024-11-19 11:12:43,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 464. [2024-11-19 11:12:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 345 states have (on average 1.4927536231884058) internal successors, (515), 405 states have internal predecessors, (515), 43 states have call successors, (43), 13 states have call predecessors, (43), 22 states have return successors, (73), 45 states have call predecessors, (73), 43 states have call successors, (73) [2024-11-19 11:12:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 631 transitions. [2024-11-19 11:12:43,817 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 631 transitions. Word has length 68 [2024-11-19 11:12:43,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:43,817 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 631 transitions. [2024-11-19 11:12:43,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 11:12:43,817 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 631 transitions. [2024-11-19 11:12:43,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 11:12:43,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:43,818 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:43,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-19 11:12:44,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:44,018 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_33_to_48_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:44,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash 690233666, now seen corresponding path program 1 times [2024-11-19 11:12:44,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:44,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615396180] [2024-11-19 11:12:44,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:44,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:44,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964245682] [2024-11-19 11:12:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:44,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:44,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:44,051 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:44,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-19 11:12:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:44,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-19 11:12:44,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:44,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:44,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 11:12:44,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:44,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-19 11:12:44,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 11:12:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:12:44,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:12:45,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:12:45,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615396180] [2024-11-19 11:12:45,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 11:12:45,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964245682] [2024-11-19 11:12:45,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964245682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:12:45,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:12:45,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-19 11:12:45,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288198843] [2024-11-19 11:12:45,064 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-19 11:12:45,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 11:12:45,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:12:45,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 11:12:45,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:12:45,064 INFO L87 Difference]: Start difference. First operand 464 states and 631 transitions. Second operand has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:45,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:12:45,805 INFO L93 Difference]: Finished difference Result 515 states and 647 transitions. [2024-11-19 11:12:45,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 11:12:45,805 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-19 11:12:45,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:12:45,807 INFO L225 Difference]: With dead ends: 515 [2024-11-19 11:12:45,807 INFO L226 Difference]: Without dead ends: 514 [2024-11-19 11:12:45,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2024-11-19 11:12:45,808 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 252 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:12:45,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1211 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:12:45,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-19 11:12:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 464. [2024-11-19 11:12:45,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 345 states have (on average 1.4869565217391305) internal successors, (513), 405 states have internal predecessors, (513), 43 states have call successors, (43), 13 states have call predecessors, (43), 22 states have return successors, (73), 45 states have call predecessors, (73), 43 states have call successors, (73) [2024-11-19 11:12:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 629 transitions. [2024-11-19 11:12:45,854 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 629 transitions. Word has length 68 [2024-11-19 11:12:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:12:45,854 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 629 transitions. [2024-11-19 11:12:45,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 11:12:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 629 transitions. [2024-11-19 11:12:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-19 11:12:45,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:12:45,855 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:12:45,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-19 11:12:46,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-19 11:12:46,056 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_33_to_48_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_48_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_48_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2024-11-19 11:12:46,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:12:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash -77592791, now seen corresponding path program 1 times [2024-11-19 11:12:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:12:46,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367648328] [2024-11-19 11:12:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:46,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:12:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 11:12:46,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691435371] [2024-11-19 11:12:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:12:46,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:12:46,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:12:46,080 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:12:46,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-19 11:12:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:12:46,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-19 11:12:46,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:12:46,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:46,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:46,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 11:12:46,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 11:12:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 11:12:46,571 INFO L311 TraceCheckSpWp]: Computing backward predicates...