./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll2.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 0e4188e08c3f48775d359529becc8db180857d5f7b1b125f480e88f6efe9d6c3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 19:08:35,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 19:08:35,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 19:08:35,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 19:08:35,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 19:08:35,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 19:08:35,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 19:08:35,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 19:08:35,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 19:08:35,385 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 19:08:35,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 19:08:35,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 19:08:35,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 19:08:35,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 19:08:35,387 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 19:08:35,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 19:08:35,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 19:08:35,388 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 19:08:35,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 19:08:35,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 19:08:35,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 19:08:35,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 19:08:35,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 19:08:35,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 19:08:35,391 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 19:08:35,391 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 19:08:35,391 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 19:08:35,392 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 19:08:35,392 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 19:08:35,392 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 19:08:35,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 19:08:35,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 19:08:35,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 19:08:35,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 19:08:35,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:08:35,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 19:08:35,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 19:08:35,394 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 19:08:35,394 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 19:08:35,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 19:08:35,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 19:08:35,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 19:08:35,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 19:08:35,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 19:08:35,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e4188e08c3f48775d359529becc8db180857d5f7b1b125f480e88f6efe9d6c3 [2024-11-20 19:08:35,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 19:08:35,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 19:08:35,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 19:08:35,698 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 19:08:35,698 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 19:08:35,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll2.c [2024-11-20 19:08:37,121 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 19:08:37,297 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 19:08:37,297 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo2-ll2.c [2024-11-20 19:08:37,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed5e261f/532f25c5bcb04baea10ecff52261114a/FLAG4bf9411ac [2024-11-20 19:08:37,317 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aed5e261f/532f25c5bcb04baea10ecff52261114a [2024-11-20 19:08:37,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 19:08:37,321 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 19:08:37,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 19:08:37,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 19:08:37,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 19:08:37,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c398824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37, skipping insertion in model container [2024-11-20 19:08:37,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,348 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 19:08:37,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:08:37,572 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 19:08:37,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 19:08:37,630 INFO L204 MainTranslator]: Completed translation [2024-11-20 19:08:37,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37 WrapperNode [2024-11-20 19:08:37,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 19:08:37,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 19:08:37,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 19:08:37,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 19:08:37,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,679 INFO L138 Inliner]: procedures = 16, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-11-20 19:08:37,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 19:08:37,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 19:08:37,683 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 19:08:37,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 19:08:37,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,695 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,711 INFO L175 MemorySlicer]: Split 27 memory accesses to 6 slices as follows [2, 2, 7, 5, 7, 4]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 2, 2, 2]. [2024-11-20 19:08:37,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,728 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 19:08:37,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 19:08:37,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 19:08:37,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 19:08:37,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (1/1) ... [2024-11-20 19:08:37,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 19:08:37,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:37,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 19:08:37,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 19:08:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 19:08:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 19:08:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 19:08:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 19:08:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 19:08:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 19:08:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-20 19:08:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 19:08:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 19:08:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 19:08:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 19:08:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 19:08:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 19:08:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-20 19:08:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_30_to_38_0 [2024-11-20 19:08:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_30_to_38_0 [2024-11-20 19:08:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 19:08:37,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 19:08:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 19:08:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 19:08:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 19:08:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 19:08:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 19:08:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-20 19:08:37,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 19:08:37,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 19:08:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 19:08:37,885 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 19:08:37,887 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 19:08:38,226 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-20 19:08:38,226 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 19:08:38,239 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 19:08:38,239 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 19:08:38,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:08:38 BoogieIcfgContainer [2024-11-20 19:08:38,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 19:08:38,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 19:08:38,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 19:08:38,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 19:08:38,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:08:37" (1/3) ... [2024-11-20 19:08:38,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62840b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:08:38, skipping insertion in model container [2024-11-20 19:08:38,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:37" (2/3) ... [2024-11-20 19:08:38,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62840b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:08:38, skipping insertion in model container [2024-11-20 19:08:38,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:08:38" (3/3) ... [2024-11-20 19:08:38,249 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo2-ll2.c [2024-11-20 19:08:38,264 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 19:08:38,265 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2024-11-20 19:08:38,321 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 19:08:38,327 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;@581b77f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 19:08:38,327 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-20 19:08:38,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 73 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 19:08:38,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-20 19:08:38,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:38,337 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 19:08:38,337 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:38,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:38,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1895540477, now seen corresponding path program 1 times [2024-11-20 19:08:38,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:38,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784826581] [2024-11-20 19:08:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:38,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521209310] [2024-11-20 19:08:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:38,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:38,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:38,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:38,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 19:08:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:38,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 19:08:38,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:38,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:38,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:38,882 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 [2024-11-20 19:08:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:38,901 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:38,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:38,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784826581] [2024-11-20 19:08:38,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:38,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521209310] [2024-11-20 19:08:38,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521209310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:38,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:38,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:08:38,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17392977] [2024-11-20 19:08:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:38,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:08:38,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:38,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:08:38,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:08:38,936 INFO L87 Difference]: Start difference. First operand has 79 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 73 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:39,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:39,177 INFO L93 Difference]: Finished difference Result 200 states and 217 transitions. [2024-11-20 19:08:39,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:08:39,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-20 19:08:39,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:39,191 INFO L225 Difference]: With dead ends: 200 [2024-11-20 19:08:39,191 INFO L226 Difference]: Without dead ends: 118 [2024-11-20 19:08:39,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:39,201 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 89 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:39,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 300 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:08:39,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-20 19:08:39,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2024-11-20 19:08:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 82 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 19:08:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2024-11-20 19:08:39,257 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 6 [2024-11-20 19:08:39,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:39,258 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2024-11-20 19:08:39,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:39,259 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2024-11-20 19:08:39,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-20 19:08:39,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:39,260 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:39,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 19:08:39,461 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 [2024-11-20 19:08:39,462 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:39,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:39,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1367787394, now seen corresponding path program 1 times [2024-11-20 19:08:39,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:39,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118753669] [2024-11-20 19:08:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:39,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:39,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475531930] [2024-11-20 19:08:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:39,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:39,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:39,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:39,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 19:08:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:39,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-20 19:08:39,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:39,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:39,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:39,694 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 [2024-11-20 19:08:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:39,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:39,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:39,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118753669] [2024-11-20 19:08:39,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:39,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475531930] [2024-11-20 19:08:39,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475531930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:39,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:39,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:08:39,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505981745] [2024-11-20 19:08:39,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:39,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:08:39,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:39,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:08:39,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:08:39,719 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:39,890 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2024-11-20 19:08:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:08:39,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-20 19:08:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:39,892 INFO L225 Difference]: With dead ends: 118 [2024-11-20 19:08:39,893 INFO L226 Difference]: Without dead ends: 116 [2024-11-20 19:08:39,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:39,894 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 84 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:39,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 271 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:08:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-20 19:08:39,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 89. [2024-11-20 19:08:39,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6481481481481481) internal successors, (89), 82 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 19:08:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2024-11-20 19:08:39,909 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 7 [2024-11-20 19:08:39,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:39,910 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2024-11-20 19:08:39,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:39,910 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2024-11-20 19:08:39,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-20 19:08:39,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:39,911 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:39,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:40,111 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 [2024-11-20 19:08:40,112 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_30_to_38_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:40,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:40,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1399556295, now seen corresponding path program 1 times [2024-11-20 19:08:40,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:40,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407635535] [2024-11-20 19:08:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:40,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:40,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:40,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407635535] [2024-11-20 19:08:40,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407635535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:40,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:40,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:08:40,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111795973] [2024-11-20 19:08:40,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:40,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:08:40,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:08:40,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:08:40,574 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:40,777 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2024-11-20 19:08:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:08:40,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-20 19:08:40,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:40,778 INFO L225 Difference]: With dead ends: 116 [2024-11-20 19:08:40,778 INFO L226 Difference]: Without dead ends: 115 [2024-11-20 19:08:40,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:08:40,780 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 75 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:40,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 326 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:08:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-20 19:08:40,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2024-11-20 19:08:40,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 82 states have internal predecessors, (88), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 19:08:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-11-20 19:08:40,795 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 10 [2024-11-20 19:08:40,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:40,796 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-11-20 19:08:40,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:40,796 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-11-20 19:08:40,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-20 19:08:40,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:40,797 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:40,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 19:08:40,797 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_30_to_38_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:40,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:40,798 INFO L85 PathProgramCache]: Analyzing trace with hash 436572230, now seen corresponding path program 1 times [2024-11-20 19:08:40,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:40,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138390341] [2024-11-20 19:08:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:40,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:41,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:41,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138390341] [2024-11-20 19:08:41,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138390341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:41,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:41,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:08:41,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015842477] [2024-11-20 19:08:41,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:41,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:08:41,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:41,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:08:41,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:08:41,092 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:41,355 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2024-11-20 19:08:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:08:41,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-20 19:08:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:41,357 INFO L225 Difference]: With dead ends: 115 [2024-11-20 19:08:41,359 INFO L226 Difference]: Without dead ends: 114 [2024-11-20 19:08:41,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:08:41,361 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 81 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:41,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 297 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:08:41,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-20 19:08:41,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2024-11-20 19:08:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 82 states have internal predecessors, (87), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 19:08:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2024-11-20 19:08:41,376 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 11 [2024-11-20 19:08:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:41,377 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2024-11-20 19:08:41,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2024-11-20 19:08:41,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-20 19:08:41,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:41,380 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:41,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 19:08:41,381 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_30_to_38_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:41,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:41,381 INFO L85 PathProgramCache]: Analyzing trace with hash 648837289, now seen corresponding path program 1 times [2024-11-20 19:08:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:41,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758513139] [2024-11-20 19:08:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:41,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:41,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384961036] [2024-11-20 19:08:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:41,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:41,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:41,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:41,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 19:08:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:41,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 19:08:41,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:41,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:41,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:41,601 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 [2024-11-20 19:08:41,742 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 [2024-11-20 19:08:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:41,769 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:41,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:41,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758513139] [2024-11-20 19:08:41,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:41,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384961036] [2024-11-20 19:08:41,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384961036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:41,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:41,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:08:41,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956169687] [2024-11-20 19:08:41,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:41,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:08:41,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:41,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:08:41,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:41,772 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:42,079 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2024-11-20 19:08:42,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 19:08:42,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-20 19:08:42,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:42,080 INFO L225 Difference]: With dead ends: 118 [2024-11-20 19:08:42,080 INFO L226 Difference]: Without dead ends: 117 [2024-11-20 19:08:42,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:08:42,082 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 109 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:42,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 370 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:08:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-20 19:08:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 89. [2024-11-20 19:08:42,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 82 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 19:08:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2024-11-20 19:08:42,099 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 12 [2024-11-20 19:08:42,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:42,100 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2024-11-20 19:08:42,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:42,100 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2024-11-20 19:08:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-20 19:08:42,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:42,100 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:42,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:42,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:42,301 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_30_to_38_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:42,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:42,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1360880472, now seen corresponding path program 1 times [2024-11-20 19:08:42,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:42,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990173196] [2024-11-20 19:08:42,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:42,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:42,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010832718] [2024-11-20 19:08:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:42,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:42,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:42,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:42,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 19:08:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:42,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 19:08:42,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:42,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:42,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:42,462 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 [2024-11-20 19:08:42,569 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 [2024-11-20 19:08:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:42,615 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:42,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:42,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990173196] [2024-11-20 19:08:42,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:42,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010832718] [2024-11-20 19:08:42,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010832718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:42,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:42,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:08:42,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381652349] [2024-11-20 19:08:42,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:42,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:08:42,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:42,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:08:42,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:42,617 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:42,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:42,936 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2024-11-20 19:08:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 19:08:42,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-20 19:08:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:42,938 INFO L225 Difference]: With dead ends: 117 [2024-11-20 19:08:42,938 INFO L226 Difference]: Without dead ends: 116 [2024-11-20 19:08:42,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:08:42,939 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 101 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:42,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 369 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 19:08:42,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-20 19:08:42,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 89. [2024-11-20 19:08:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 82 states have internal predecessors, (85), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 19:08:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2024-11-20 19:08:42,953 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 13 [2024-11-20 19:08:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:42,954 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2024-11-20 19:08:42,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:42,954 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2024-11-20 19:08:42,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 19:08:42,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:42,955 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:42,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 19:08:43,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:43,155 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_30_to_38_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:43,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash 762378379, now seen corresponding path program 1 times [2024-11-20 19:08:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:43,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667964289] [2024-11-20 19:08:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:43,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077811153] [2024-11-20 19:08:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:43,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:43,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:43,183 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:43,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 19:08:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:43,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-20 19:08:43,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:43,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:43,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:43,414 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 [2024-11-20 19:08:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:43,443 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:43,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:43,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667964289] [2024-11-20 19:08:43,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:43,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077811153] [2024-11-20 19:08:43,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077811153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:43,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:43,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 19:08:43,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716144281] [2024-11-20 19:08:43,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:43,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 19:08:43,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:43,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 19:08:43,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:43,445 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:43,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:43,639 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2024-11-20 19:08:43,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:08:43,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 19:08:43,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:43,640 INFO L225 Difference]: With dead ends: 112 [2024-11-20 19:08:43,640 INFO L226 Difference]: Without dead ends: 110 [2024-11-20 19:08:43,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-20 19:08:43,641 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 71 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:43,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 325 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:08:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-20 19:08:43,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2024-11-20 19:08:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 54 states have (on average 1.537037037037037) internal successors, (83), 82 states have internal predecessors, (83), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 19:08:43,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2024-11-20 19:08:43,656 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 14 [2024-11-20 19:08:43,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:43,656 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2024-11-20 19:08:43,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 19:08:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2024-11-20 19:08:43,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-20 19:08:43,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:43,661 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:43,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 19:08:43,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:43,862 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_30_to_38_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:43,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:43,862 INFO L85 PathProgramCache]: Analyzing trace with hash 418095421, now seen corresponding path program 1 times [2024-11-20 19:08:43,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:43,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423737557] [2024-11-20 19:08:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:43,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:44,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-20 19:08:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:44,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:44,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423737557] [2024-11-20 19:08:44,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423737557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:44,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:44,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:08:44,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907223412] [2024-11-20 19:08:44,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:44,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:08:44,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:44,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:08:44,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:08:44,022 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:08:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:44,096 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2024-11-20 19:08:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:08:44,096 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-20 19:08:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:44,097 INFO L225 Difference]: With dead ends: 114 [2024-11-20 19:08:44,097 INFO L226 Difference]: Without dead ends: 113 [2024-11-20 19:08:44,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:08:44,098 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 44 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:44,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 331 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:08:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-20 19:08:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 90. [2024-11-20 19:08:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 83 states have internal predecessors, (84), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 19:08:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2024-11-20 19:08:44,108 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 23 [2024-11-20 19:08:44,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:44,108 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2024-11-20 19:08:44,108 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:08:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2024-11-20 19:08:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-20 19:08:44,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:44,109 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:44,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 19:08:44,110 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_30_to_38_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:44,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:44,111 INFO L85 PathProgramCache]: Analyzing trace with hash 76056226, now seen corresponding path program 1 times [2024-11-20 19:08:44,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:44,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018572166] [2024-11-20 19:08:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:44,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:44,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-20 19:08:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:44,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:44,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:44,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018572166] [2024-11-20 19:08:44,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018572166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:44,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:44,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:08:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49361675] [2024-11-20 19:08:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:44,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:08:44,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:44,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:08:44,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:08:44,288 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:08:44,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:44,360 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2024-11-20 19:08:44,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:08:44,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-20 19:08:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:44,363 INFO L225 Difference]: With dead ends: 90 [2024-11-20 19:08:44,363 INFO L226 Difference]: Without dead ends: 89 [2024-11-20 19:08:44,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:08:44,363 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 90 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:44,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 272 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:08:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-20 19:08:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-20 19:08:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.509090909090909) internal successors, (83), 82 states have internal predecessors, (83), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 19:08:44,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2024-11-20 19:08:44,370 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 24 [2024-11-20 19:08:44,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:44,370 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2024-11-20 19:08:44,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:08:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2024-11-20 19:08:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-20 19:08:44,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:44,371 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:44,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 19:08:44,371 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_30_to_38_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:44,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:44,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1937224225, now seen corresponding path program 1 times [2024-11-20 19:08:44,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:44,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179420550] [2024-11-20 19:08:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:44,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:44,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911148310] [2024-11-20 19:08:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:44,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:44,392 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:44,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 19:08:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:44,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 19:08:44,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:44,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:44,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:44,645 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 [2024-11-20 19:08:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:44,658 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:44,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:44,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179420550] [2024-11-20 19:08:44,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:44,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911148310] [2024-11-20 19:08:44,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911148310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:44,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:44,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:08:44,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366482387] [2024-11-20 19:08:44,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:44,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:08:44,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:44,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:08:44,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:08:44,660 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:08:44,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:44,789 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2024-11-20 19:08:44,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:08:44,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-20 19:08:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:44,790 INFO L225 Difference]: With dead ends: 123 [2024-11-20 19:08:44,790 INFO L226 Difference]: Without dead ends: 121 [2024-11-20 19:08:44,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:08:44,791 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 54 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:44,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 341 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:08:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-20 19:08:44,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 97. [2024-11-20 19:08:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 62 states have (on average 1.467741935483871) internal successors, (91), 89 states have internal predecessors, (91), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 19:08:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2024-11-20 19:08:44,797 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 25 [2024-11-20 19:08:44,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:44,798 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2024-11-20 19:08:44,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:08:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2024-11-20 19:08:44,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 19:08:44,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:44,798 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:44,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:45,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:45,003 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:45,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:45,003 INFO L85 PathProgramCache]: Analyzing trace with hash 75296849, now seen corresponding path program 1 times [2024-11-20 19:08:45,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:45,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431174448] [2024-11-20 19:08:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:45,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:45,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799598503] [2024-11-20 19:08:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:45,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:45,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:45,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:45,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 19:08:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:45,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 19:08:45,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:45,123 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 11 treesize of output 7 [2024-11-20 19:08:45,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:45,245 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 [2024-11-20 19:08:45,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:45,256 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:45,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:45,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431174448] [2024-11-20 19:08:45,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:45,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799598503] [2024-11-20 19:08:45,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799598503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:45,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:45,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:08:45,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625994649] [2024-11-20 19:08:45,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:45,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:08:45,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:45,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:08:45,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:08:45,258 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:08:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:45,371 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2024-11-20 19:08:45,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:08:45,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-20 19:08:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:45,372 INFO L225 Difference]: With dead ends: 116 [2024-11-20 19:08:45,372 INFO L226 Difference]: Without dead ends: 114 [2024-11-20 19:08:45,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:45,373 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 109 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:45,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 152 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:08:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-20 19:08:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2024-11-20 19:08:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 93 states have internal predecessors, (97), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 19:08:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2024-11-20 19:08:45,380 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 26 [2024-11-20 19:08:45,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:45,380 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2024-11-20 19:08:45,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:08:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2024-11-20 19:08:45,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 19:08:45,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:45,381 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:45,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:45,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:45,586 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_30_to_38_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:45,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:45,587 INFO L85 PathProgramCache]: Analyzing trace with hash 75591236, now seen corresponding path program 1 times [2024-11-20 19:08:45,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:45,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294452940] [2024-11-20 19:08:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:45,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:45,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715842358] [2024-11-20 19:08:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:45,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:45,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:45,608 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:45,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 19:08:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:45,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 19:08:45,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:45,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:45,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:45,849 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 [2024-11-20 19:08:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:45,862 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:45,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:45,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294452940] [2024-11-20 19:08:45,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:45,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715842358] [2024-11-20 19:08:45,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715842358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:45,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:45,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:08:45,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30558259] [2024-11-20 19:08:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:45,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:08:45,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:45,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:08:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:08:45,865 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:08:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:45,993 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2024-11-20 19:08:45,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:08:45,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-20 19:08:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:45,994 INFO L225 Difference]: With dead ends: 121 [2024-11-20 19:08:45,994 INFO L226 Difference]: Without dead ends: 119 [2024-11-20 19:08:45,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:08:45,995 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 53 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:45,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 264 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:08:45,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-20 19:08:46,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 104. [2024-11-20 19:08:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 68 states have (on average 1.4264705882352942) internal successors, (97), 94 states have internal predecessors, (97), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 19:08:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2024-11-20 19:08:46,001 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 26 [2024-11-20 19:08:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:46,002 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2024-11-20 19:08:46,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:08:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2024-11-20 19:08:46,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-20 19:08:46,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:46,003 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:46,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:46,206 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,SelfDestructingSolverStorable11 [2024-11-20 19:08:46,207 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:46,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1960764888, now seen corresponding path program 1 times [2024-11-20 19:08:46,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:46,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378682166] [2024-11-20 19:08:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:46,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:46,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134827170] [2024-11-20 19:08:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:46,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:46,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:46,228 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:08:46,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 19:08:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:46,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 19:08:46,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:46,341 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 [2024-11-20 19:08:46,345 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 11 treesize of output 7 [2024-11-20 19:08:46,447 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 [2024-11-20 19:08:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:46,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:46,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:46,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378682166] [2024-11-20 19:08:46,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:46,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134827170] [2024-11-20 19:08:46,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134827170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:46,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:46,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:08:46,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159108391] [2024-11-20 19:08:46,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:46,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:08:46,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:46,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:08:46,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:08:46,463 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:08:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:46,611 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2024-11-20 19:08:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:08:46,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-20 19:08:46,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:46,612 INFO L225 Difference]: With dead ends: 115 [2024-11-20 19:08:46,613 INFO L226 Difference]: Without dead ends: 113 [2024-11-20 19:08:46,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-20 19:08:46,613 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 104 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:46,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 156 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:08:46,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-20 19:08:46,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2024-11-20 19:08:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 95 states have internal predecessors, (97), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 19:08:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2024-11-20 19:08:46,625 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 27 [2024-11-20 19:08:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:46,625 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2024-11-20 19:08:46,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:08:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2024-11-20 19:08:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-20 19:08:46,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:46,627 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:46,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:46,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-20 19:08:46,828 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_30_to_38_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:46,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1375717155, now seen corresponding path program 1 times [2024-11-20 19:08:46,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:46,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809622875] [2024-11-20 19:08:46,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:46,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:46,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691243475] [2024-11-20 19:08:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:46,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:46,850 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) [2024-11-20 19:08:46,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 19:08:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:46,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-20 19:08:46,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:46,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:46,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:47,041 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 [2024-11-20 19:08:47,481 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 [2024-11-20 19:08:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:47,518 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:47,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:47,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809622875] [2024-11-20 19:08:47,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:47,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691243475] [2024-11-20 19:08:47,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691243475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:47,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:47,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-20 19:08:47,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491527236] [2024-11-20 19:08:47,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:47,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 19:08:47,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:47,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 19:08:47,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-20 19:08:47,521 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:08:49,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:49,063 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2024-11-20 19:08:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 19:08:49,064 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-20 19:08:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:49,065 INFO L225 Difference]: With dead ends: 121 [2024-11-20 19:08:49,065 INFO L226 Difference]: Without dead ends: 120 [2024-11-20 19:08:49,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-20 19:08:49,066 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 69 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:49,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 515 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 19:08:49,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-20 19:08:49,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2024-11-20 19:08:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 70 states have (on average 1.4) internal successors, (98), 96 states have internal predecessors, (98), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 19:08:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2024-11-20 19:08:49,075 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 29 [2024-11-20 19:08:49,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:49,075 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2024-11-20 19:08:49,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:08:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2024-11-20 19:08:49,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-20 19:08:49,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:49,077 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:49,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 19:08:49,280 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,SelfDestructingSolverStorable13 [2024-11-20 19:08:49,281 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:49,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:49,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1591462379, now seen corresponding path program 1 times [2024-11-20 19:08:49,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:49,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80415881] [2024-11-20 19:08:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:49,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:49,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 19:08:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:49,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:08:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:49,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:49,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80415881] [2024-11-20 19:08:49,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80415881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:49,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:49,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:08:49,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147160800] [2024-11-20 19:08:49,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:49,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:08:49,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:49,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:08:49,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:08:49,455 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:08:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:08:49,592 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2024-11-20 19:08:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:08:49,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-20 19:08:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:08:49,593 INFO L225 Difference]: With dead ends: 115 [2024-11-20 19:08:49,593 INFO L226 Difference]: Without dead ends: 114 [2024-11-20 19:08:49,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:08:49,594 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 46 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:08:49,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 219 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:08:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-20 19:08:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 107. [2024-11-20 19:08:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 97 states have internal predecessors, (99), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 19:08:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2024-11-20 19:08:49,603 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 30 [2024-11-20 19:08:49,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:08:49,603 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2024-11-20 19:08:49,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:08:49,604 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2024-11-20 19:08:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-20 19:08:49,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:08:49,604 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:08:49,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 19:08:49,605 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_30_to_38_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:08:49,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:08:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash -302441080, now seen corresponding path program 1 times [2024-11-20 19:08:49,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:08:49,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996649766] [2024-11-20 19:08:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:49,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:08:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:08:49,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132472508] [2024-11-20 19:08:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:08:49,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:08:49,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:08:49,627 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) [2024-11-20 19:08:49,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 19:08:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:08:49,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 19:08:49,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:08:49,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:08:49,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:08:49,774 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 [2024-11-20 19:08:54,136 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 [2024-11-20 19:08:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:08:54,173 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:08:54,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:08:54,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996649766] [2024-11-20 19:08:54,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:08:54,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132472508] [2024-11-20 19:08:54,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132472508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:08:54,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:08:54,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:08:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050322739] [2024-11-20 19:08:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:08:54,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:08:54,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:08:54,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:08:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=55, Unknown=1, NotChecked=0, Total=72 [2024-11-20 19:08:54,177 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:08:58,190 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] [2024-11-20 19:09:06,299 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] [2024-11-20 19:09:06,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:06,565 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2024-11-20 19:09:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 19:09:06,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-11-20 19:09:06,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:06,566 INFO L225 Difference]: With dead ends: 119 [2024-11-20 19:09:06,566 INFO L226 Difference]: Without dead ends: 118 [2024-11-20 19:09:06,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=52, Invalid=156, Unknown=2, NotChecked=0, Total=210 [2024-11-20 19:09:06,567 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 71 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:06,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 425 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2024-11-20 19:09:06,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-20 19:09:06,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2024-11-20 19:09:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 98 states have internal predecessors, (100), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 19:09:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2024-11-20 19:09:06,578 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 30 [2024-11-20 19:09:06,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:06,579 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2024-11-20 19:09:06,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 19:09:06,580 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2024-11-20 19:09:06,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-20 19:09:06,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:06,582 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:06,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 19:09:06,786 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,SelfDestructingSolverStorable15 [2024-11-20 19:09:06,787 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:06,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2090693396, now seen corresponding path program 1 times [2024-11-20 19:09:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:06,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428357363] [2024-11-20 19:09:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:06,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 19:09:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:06,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-20 19:09:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:06,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:06,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428357363] [2024-11-20 19:09:06,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428357363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:06,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:06,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:06,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426750582] [2024-11-20 19:09:06,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:06,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:06,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:06,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:06,943 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:07,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:07,057 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2024-11-20 19:09:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 19:09:07,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-20 19:09:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:07,059 INFO L225 Difference]: With dead ends: 116 [2024-11-20 19:09:07,059 INFO L226 Difference]: Without dead ends: 115 [2024-11-20 19:09:07,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 19:09:07,059 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:07,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 171 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-20 19:09:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 109. [2024-11-20 19:09:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 99 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 19:09:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2024-11-20 19:09:07,067 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 31 [2024-11-20 19:09:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:07,067 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2024-11-20 19:09:07,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2024-11-20 19:09:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-20 19:09:07,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:07,068 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:07,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 19:09:07,069 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:07,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash -386985737, now seen corresponding path program 1 times [2024-11-20 19:09:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:07,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114905368] [2024-11-20 19:09:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:07,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:07,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34487154] [2024-11-20 19:09:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:07,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:07,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:07,087 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) [2024-11-20 19:09:07,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 19:09:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:07,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-20 19:09:07,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:07,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:07,207 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 [2024-11-20 19:09:07,212 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 [2024-11-20 19:09:07,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 19:09:07,508 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 26 treesize of output 26 [2024-11-20 19:09:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:07,533 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:07,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:07,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114905368] [2024-11-20 19:09:07,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:07,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34487154] [2024-11-20 19:09:07,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34487154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:07,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:07,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:07,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149334154] [2024-11-20 19:09:07,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:07,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:07,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:07,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:07,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:07,536 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand has 9 states, 7 states have (on average 4.0) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:07,676 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2024-11-20 19:09:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:07,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.0) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2024-11-20 19:09:07,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:07,678 INFO L225 Difference]: With dead ends: 114 [2024-11-20 19:09:07,678 INFO L226 Difference]: Without dead ends: 113 [2024-11-20 19:09:07,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:07,678 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 132 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:07,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 214 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:07,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-20 19:09:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2024-11-20 19:09:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 100 states have internal predecessors, (102), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 19:09:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2024-11-20 19:09:07,692 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 32 [2024-11-20 19:09:07,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:07,692 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2024-11-20 19:09:07,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.0) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2024-11-20 19:09:07,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-20 19:09:07,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:07,693 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:07,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 19:09:07,893 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,SelfDestructingSolverStorable17 [2024-11-20 19:09:07,894 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:07,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:07,894 INFO L85 PathProgramCache]: Analyzing trace with hash 888344142, now seen corresponding path program 1 times [2024-11-20 19:09:07,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:07,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068653438] [2024-11-20 19:09:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:07,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:07,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768467620] [2024-11-20 19:09:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:07,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:07,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:07,917 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) [2024-11-20 19:09:07,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 19:09:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:08,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-20 19:09:08,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:08,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:08,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:08,050 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 [2024-11-20 19:09:08,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 19:09:08,306 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 [2024-11-20 19:09:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:08,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:08,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:08,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068653438] [2024-11-20 19:09:08,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:08,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768467620] [2024-11-20 19:09:08,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768467620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:08,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:08,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 19:09:08,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161340524] [2024-11-20 19:09:08,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:08,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 19:09:08,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:08,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 19:09:08,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 19:09:08,320 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand has 9 states, 7 states have (on average 4.142857142857143) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:08,478 INFO L93 Difference]: Finished difference Result 114 states and 117 transitions. [2024-11-20 19:09:08,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:08,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.142857142857143) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2024-11-20 19:09:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:08,480 INFO L225 Difference]: With dead ends: 114 [2024-11-20 19:09:08,480 INFO L226 Difference]: Without dead ends: 113 [2024-11-20 19:09:08,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-20 19:09:08,481 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 110 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:08,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 234 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-20 19:09:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2024-11-20 19:09:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 101 states have internal predecessors, (103), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-20 19:09:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2024-11-20 19:09:08,490 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 33 [2024-11-20 19:09:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:08,491 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2024-11-20 19:09:08,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.142857142857143) internal successors, (29), 9 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2024-11-20 19:09:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-20 19:09:08,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:08,492 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:08,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:08,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:08,697 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:08,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:08,697 INFO L85 PathProgramCache]: Analyzing trace with hash -371695445, now seen corresponding path program 1 times [2024-11-20 19:09:08,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:08,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683942013] [2024-11-20 19:09:08,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:08,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:08,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148179029] [2024-11-20 19:09:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:08,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:08,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:08,726 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) [2024-11-20 19:09:08,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 19:09:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:08,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-20 19:09:08,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:08,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:08,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:08,986 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 25 treesize of output 17 [2024-11-20 19:09:09,029 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 [2024-11-20 19:09:09,032 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 [2024-11-20 19:09:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:09,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:09,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:09,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683942013] [2024-11-20 19:09:09,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:09,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148179029] [2024-11-20 19:09:09,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148179029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:09:09,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:09,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2024-11-20 19:09:09,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516309357] [2024-11-20 19:09:09,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:09,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 19:09:09,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:09,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 19:09:09,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-20 19:09:09,296 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand has 17 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:09,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:09,845 INFO L93 Difference]: Finished difference Result 155 states and 160 transitions. [2024-11-20 19:09:09,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 19:09:09,846 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-11-20 19:09:09,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:09,847 INFO L225 Difference]: With dead ends: 155 [2024-11-20 19:09:09,847 INFO L226 Difference]: Without dead ends: 153 [2024-11-20 19:09:09,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-20 19:09:09,848 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 170 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:09,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 557 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 19:09:09,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-20 19:09:09,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 130. [2024-11-20 19:09:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 91 states have (on average 1.3956043956043955) internal successors, (127), 117 states have internal predecessors, (127), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-20 19:09:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2024-11-20 19:09:09,867 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 34 [2024-11-20 19:09:09,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:09,867 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2024-11-20 19:09:09,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.214285714285714) internal successors, (59), 13 states have internal predecessors, (59), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:09,868 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2024-11-20 19:09:09,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-20 19:09:09,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:09,868 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:09,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 19:09:10,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:10,069 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:10,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:10,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1768864729, now seen corresponding path program 1 times [2024-11-20 19:09:10,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:10,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983669707] [2024-11-20 19:09:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:10,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:10,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798425646] [2024-11-20 19:09:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:10,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:10,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:10,102 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) [2024-11-20 19:09:10,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 19:09:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:10,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-20 19:09:10,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:10,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:10,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:10,243 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 15 treesize of output 1 [2024-11-20 19:09:10,390 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 [2024-11-20 19:09:10,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:10,421 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:10,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:10,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983669707] [2024-11-20 19:09:10,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:10,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798425646] [2024-11-20 19:09:10,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798425646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:10,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:10,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 19:09:10,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250713200] [2024-11-20 19:09:10,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:10,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 19:09:10,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:10,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 19:09:10,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:10,423 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:10,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:10,582 INFO L93 Difference]: Finished difference Result 134 states and 146 transitions. [2024-11-20 19:09:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:10,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-11-20 19:09:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:10,584 INFO L225 Difference]: With dead ends: 134 [2024-11-20 19:09:10,584 INFO L226 Difference]: Without dead ends: 119 [2024-11-20 19:09:10,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 19:09:10,586 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 24 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:10,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 193 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 19:09:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-20 19:09:10,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-20 19:09:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 107 states have internal predecessors, (116), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-20 19:09:10,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2024-11-20 19:09:10,596 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 34 [2024-11-20 19:09:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:10,597 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2024-11-20 19:09:10,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2024-11-20 19:09:10,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-20 19:09:10,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:10,598 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] [2024-11-20 19:09:10,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:10,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:10,798 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:10,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:10,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1362343130, now seen corresponding path program 1 times [2024-11-20 19:09:10,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:10,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553193188] [2024-11-20 19:09:10,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:10,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:10,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258193565] [2024-11-20 19:09:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:10,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:10,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:10,818 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) [2024-11-20 19:09:10,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 19:09:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:10,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-20 19:09:10,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:10,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:10,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:11,187 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 25 treesize of output 17 [2024-11-20 19:09:11,245 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 [2024-11-20 19:09:11,248 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 33 treesize of output 17 [2024-11-20 19:09:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:11,276 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:11,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:11,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553193188] [2024-11-20 19:09:11,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:11,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258193565] [2024-11-20 19:09:11,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258193565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:09:11,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:11,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2024-11-20 19:09:11,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781186623] [2024-11-20 19:09:11,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:11,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 19:09:11,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 19:09:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-20 19:09:11,909 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 17 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:13,092 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2024-11-20 19:09:13,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 19:09:13,095 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-11-20 19:09:13,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:13,096 INFO L225 Difference]: With dead ends: 138 [2024-11-20 19:09:13,096 INFO L226 Difference]: Without dead ends: 136 [2024-11-20 19:09:13,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2024-11-20 19:09:13,097 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 196 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:13,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 574 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 19:09:13,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-20 19:09:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 119. [2024-11-20 19:09:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 107 states have internal predecessors, (114), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-20 19:09:13,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2024-11-20 19:09:13,106 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 35 [2024-11-20 19:09:13,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:13,107 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2024-11-20 19:09:13,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.357142857142857) internal successors, (61), 13 states have internal predecessors, (61), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:13,107 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2024-11-20 19:09:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-20 19:09:13,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:13,107 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] [2024-11-20 19:09:13,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-20 19:09:13,311 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,SelfDestructingSolverStorable21 [2024-11-20 19:09:13,312 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_30_to_38_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:13,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:13,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1876722577, now seen corresponding path program 1 times [2024-11-20 19:09:13,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:13,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311249078] [2024-11-20 19:09:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:13,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:13,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656096557] [2024-11-20 19:09:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:13,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:13,343 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) [2024-11-20 19:09:13,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 19:09:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:13,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-20 19:09:13,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:13,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:13,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:13,686 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 25 treesize of output 17 [2024-11-20 19:09:13,744 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 37 treesize of output 21 [2024-11-20 19:09:13,811 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 24 treesize of output 12 [2024-11-20 19:09:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:13,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:14,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311249078] [2024-11-20 19:09:14,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656096557] [2024-11-20 19:09:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656096557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:09:14,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:14,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2024-11-20 19:09:14,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111700043] [2024-11-20 19:09:14,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:14,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 19:09:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:14,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 19:09:14,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-11-20 19:09:14,120 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 19 states, 16 states have (on average 4.1875) internal successors, (67), 15 states have internal predecessors, (67), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:15,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:15,212 INFO L93 Difference]: Finished difference Result 136 states and 140 transitions. [2024-11-20 19:09:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 19:09:15,213 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 4.1875) internal successors, (67), 15 states have internal predecessors, (67), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-11-20 19:09:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:15,214 INFO L225 Difference]: With dead ends: 136 [2024-11-20 19:09:15,214 INFO L226 Difference]: Without dead ends: 134 [2024-11-20 19:09:15,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2024-11-20 19:09:15,215 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 186 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:15,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 612 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 19:09:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-20 19:09:15,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 119. [2024-11-20 19:09:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 81 states have (on average 1.382716049382716) internal successors, (112), 107 states have internal predecessors, (112), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-20 19:09:15,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2024-11-20 19:09:15,226 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 38 [2024-11-20 19:09:15,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:15,226 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2024-11-20 19:09:15,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 4.1875) internal successors, (67), 15 states have internal predecessors, (67), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:15,226 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2024-11-20 19:09:15,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-20 19:09:15,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:15,227 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:15,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:15,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:15,428 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_30_to_38_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:15,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:15,428 INFO L85 PathProgramCache]: Analyzing trace with hash 355869265, now seen corresponding path program 1 times [2024-11-20 19:09:15,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:15,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299249122] [2024-11-20 19:09:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:15,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:15,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228768784] [2024-11-20 19:09:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:15,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:15,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:15,449 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) [2024-11-20 19:09:15,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-20 19:09:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:15,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-20 19:09:15,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:15,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:15,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:15,680 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 15 [2024-11-20 19:09:15,706 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 [2024-11-20 19:09:15,708 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 [2024-11-20 19:09:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:15,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:15,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:15,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299249122] [2024-11-20 19:09:15,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:15,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228768784] [2024-11-20 19:09:15,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228768784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:09:15,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:15,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2024-11-20 19:09:15,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643453532] [2024-11-20 19:09:15,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:15,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 19:09:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 19:09:15,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-20 19:09:15,894 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand has 17 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:16,280 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2024-11-20 19:09:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 19:09:16,281 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-11-20 19:09:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:16,282 INFO L225 Difference]: With dead ends: 138 [2024-11-20 19:09:16,282 INFO L226 Difference]: Without dead ends: 137 [2024-11-20 19:09:16,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-20 19:09:16,283 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 124 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:16,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 692 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-20 19:09:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2024-11-20 19:09:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 107 states have internal predecessors, (111), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-20 19:09:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2024-11-20 19:09:16,294 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 40 [2024-11-20 19:09:16,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:16,294 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2024-11-20 19:09:16,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:16,294 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2024-11-20 19:09:16,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-20 19:09:16,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:16,295 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:16,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-20 19:09:16,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:16,495 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_30_to_38_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:16,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:16,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1852954624, now seen corresponding path program 1 times [2024-11-20 19:09:16,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:16,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064054198] [2024-11-20 19:09:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:16,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:16,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352123102] [2024-11-20 19:09:16,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:16,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:16,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:16,519 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) [2024-11-20 19:09:16,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-20 19:09:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:16,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-20 19:09:16,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:16,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:16,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:16,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:16,999 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 [2024-11-20 19:09:17,031 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 15 [2024-11-20 19:09:17,124 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 35 treesize of output 19 [2024-11-20 19:09:17,129 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 [2024-11-20 19:09:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:17,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:17,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:17,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064054198] [2024-11-20 19:09:17,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:17,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352123102] [2024-11-20 19:09:17,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352123102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:09:17,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:17,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2024-11-20 19:09:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307984106] [2024-11-20 19:09:17,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:17,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 19:09:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 19:09:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-20 19:09:17,787 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand has 18 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:19,312 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2024-11-20 19:09:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 19:09:19,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-11-20 19:09:19,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:19,314 INFO L225 Difference]: With dead ends: 137 [2024-11-20 19:09:19,315 INFO L226 Difference]: Without dead ends: 136 [2024-11-20 19:09:19,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2024-11-20 19:09:19,316 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 150 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:19,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 688 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-20 19:09:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-20 19:09:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 119. [2024-11-20 19:09:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 107 states have internal predecessors, (110), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-20 19:09:19,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2024-11-20 19:09:19,351 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 41 [2024-11-20 19:09:19,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:19,352 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2024-11-20 19:09:19,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:19,352 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2024-11-20 19:09:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-20 19:09:19,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:19,352 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:19,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:19,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:19,553 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_30_to_38_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:19,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1607018445, now seen corresponding path program 1 times [2024-11-20 19:09:19,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:19,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058783303] [2024-11-20 19:09:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:19,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:19,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301900548] [2024-11-20 19:09:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:19,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:19,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:19,581 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) [2024-11-20 19:09:19,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-20 19:09:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:19,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-20 19:09:19,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:19,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:19,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:19,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:19,912 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 25 treesize of output 17 [2024-11-20 19:09:19,943 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 15 [2024-11-20 19:09:20,027 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 28 treesize of output 16 [2024-11-20 19:09:20,060 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 35 treesize of output 19 [2024-11-20 19:09:20,065 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 [2024-11-20 19:09:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:20,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:21,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:21,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058783303] [2024-11-20 19:09:21,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:21,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301900548] [2024-11-20 19:09:21,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301900548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:09:21,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:21,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2024-11-20 19:09:21,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291412727] [2024-11-20 19:09:21,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:21,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 19:09:21,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:21,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 19:09:21,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2024-11-20 19:09:21,436 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand has 25 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:26,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:26,039 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2024-11-20 19:09:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-20 19:09:26,039 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-20 19:09:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:26,040 INFO L225 Difference]: With dead ends: 173 [2024-11-20 19:09:26,040 INFO L226 Difference]: Without dead ends: 171 [2024-11-20 19:09:26,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=296, Invalid=1344, Unknown=0, NotChecked=0, Total=1640 [2024-11-20 19:09:26,041 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 277 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:26,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 648 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-20 19:09:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-20 19:09:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 147. [2024-11-20 19:09:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 132 states have internal predecessors, (148), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-20 19:09:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 169 transitions. [2024-11-20 19:09:26,060 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 169 transitions. Word has length 42 [2024-11-20 19:09:26,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:26,060 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 169 transitions. [2024-11-20 19:09:26,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:26,060 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 169 transitions. [2024-11-20 19:09:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 19:09:26,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:26,061 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:26,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-20 19:09:26,261 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,SelfDestructingSolverStorable25 [2024-11-20 19:09:26,262 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_30_to_38_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:26,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:26,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1031986837, now seen corresponding path program 1 times [2024-11-20 19:09:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:26,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700315897] [2024-11-20 19:09:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:26,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:26,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-20 19:09:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:26,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 19:09:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:09:26,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:26,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700315897] [2024-11-20 19:09:26,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700315897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:09:26,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256701808] [2024-11-20 19:09:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:26,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:26,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:26,670 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) [2024-11-20 19:09:26,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-20 19:09:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:26,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-20 19:09:26,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:26,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:26,889 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 [2024-11-20 19:09:26,985 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 [2024-11-20 19:09:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:26,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:09:27,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256701808] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 19:09:27,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:27,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 10] total 20 [2024-11-20 19:09:27,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149708196] [2024-11-20 19:09:27,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:27,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:27,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:27,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:27,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-20 19:09:27,113 INFO L87 Difference]: Start difference. First operand 147 states and 169 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:27,205 INFO L93 Difference]: Finished difference Result 149 states and 172 transitions. [2024-11-20 19:09:27,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 19:09:27,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2024-11-20 19:09:27,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:27,206 INFO L225 Difference]: With dead ends: 149 [2024-11-20 19:09:27,207 INFO L226 Difference]: Without dead ends: 148 [2024-11-20 19:09:27,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-20 19:09:27,208 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 58 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:27,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 343 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 19:09:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-20 19:09:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-20 19:09:27,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 106 states have (on average 1.3867924528301887) internal successors, (147), 132 states have internal predecessors, (147), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-20 19:09:27,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2024-11-20 19:09:27,234 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 51 [2024-11-20 19:09:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:27,235 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2024-11-20 19:09:27,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2024-11-20 19:09:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-20 19:09:27,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:27,235 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:27,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-20 19:09:27,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-20 19:09:27,440 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_30_to_38_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:27,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:27,440 INFO L85 PathProgramCache]: Analyzing trace with hash -398093001, now seen corresponding path program 1 times [2024-11-20 19:09:27,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:27,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971752578] [2024-11-20 19:09:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:27,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190109729] [2024-11-20 19:09:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:27,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:27,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:27,470 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) [2024-11-20 19:09:27,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-20 19:09:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:27,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-20 19:09:27,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:27,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:27,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:27,714 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 25 treesize of output 17 [2024-11-20 19:09:27,813 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 [2024-11-20 19:09:27,816 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 [2024-11-20 19:09:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:27,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:28,056 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:09:28,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:28,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971752578] [2024-11-20 19:09:28,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:28,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190109729] [2024-11-20 19:09:28,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190109729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:09:28,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:09:28,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2024-11-20 19:09:28,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850198130] [2024-11-20 19:09:28,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:28,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 19:09:28,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:28,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 19:09:28,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-20 19:09:28,058 INFO L87 Difference]: Start difference. First operand 148 states and 170 transitions. Second operand has 18 states, 15 states have (on average 6.0) internal successors, (90), 14 states have internal predecessors, (90), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 19:09:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:28,760 INFO L93 Difference]: Finished difference Result 236 states and 249 transitions. [2024-11-20 19:09:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 19:09:28,760 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.0) internal successors, (90), 14 states have internal predecessors, (90), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 53 [2024-11-20 19:09:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:28,761 INFO L225 Difference]: With dead ends: 236 [2024-11-20 19:09:28,761 INFO L226 Difference]: Without dead ends: 234 [2024-11-20 19:09:28,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2024-11-20 19:09:28,762 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 236 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:28,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 837 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 19:09:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-20 19:09:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 182. [2024-11-20 19:09:28,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 136 states have (on average 1.3897058823529411) internal successors, (189), 162 states have internal predecessors, (189), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-20 19:09:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 218 transitions. [2024-11-20 19:09:28,779 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 218 transitions. Word has length 53 [2024-11-20 19:09:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:28,780 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 218 transitions. [2024-11-20 19:09:28,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.0) internal successors, (90), 14 states have internal predecessors, (90), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 19:09:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 218 transitions. [2024-11-20 19:09:28,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 19:09:28,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:28,781 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:28,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-20 19:09:28,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-20 19:09:28,982 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_30_to_38_0Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:28,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash 544018924, now seen corresponding path program 1 times [2024-11-20 19:09:28,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:28,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067596749] [2024-11-20 19:09:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:28,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:29,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932475071] [2024-11-20 19:09:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:29,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:29,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:29,016 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) [2024-11-20 19:09:29,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-20 19:09:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:29,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-20 19:09:29,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:29,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:33,350 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 [2024-11-20 19:09:33,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-20 19:09:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 19:09:33,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 19:09:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:33,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067596749] [2024-11-20 19:09:33,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:33,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932475071] [2024-11-20 19:09:33,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932475071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 19:09:33,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 19:09:33,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 19:09:33,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077235727] [2024-11-20 19:09:33,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 19:09:33,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 19:09:33,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:33,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 19:09:33,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2024-11-20 19:09:33,418 INFO L87 Difference]: Start difference. First operand 182 states and 218 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:37,492 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] [2024-11-20 19:09:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:39,270 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2024-11-20 19:09:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 19:09:39,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2024-11-20 19:09:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:39,272 INFO L225 Difference]: With dead ends: 182 [2024-11-20 19:09:39,272 INFO L226 Difference]: Without dead ends: 180 [2024-11-20 19:09:39,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=25, Invalid=46, Unknown=1, NotChecked=0, Total=72 [2024-11-20 19:09:39,273 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 67 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:39,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 140 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2024-11-20 19:09:39,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-20 19:09:39,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-20 19:09:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 136 states have (on average 1.3455882352941178) internal successors, (183), 160 states have internal predecessors, (183), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 11 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-20 19:09:39,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 212 transitions. [2024-11-20 19:09:39,292 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 212 transitions. Word has length 54 [2024-11-20 19:09:39,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:39,292 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 212 transitions. [2024-11-20 19:09:39,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 19:09:39,293 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 212 transitions. [2024-11-20 19:09:39,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-20 19:09:39,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:39,293 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:39,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:39,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:39,494 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:39,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:39,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1468683929, now seen corresponding path program 1 times [2024-11-20 19:09:39,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:39,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405484151] [2024-11-20 19:09:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:39,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:39,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998275870] [2024-11-20 19:09:39,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:39,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:39,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:39,519 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) [2024-11-20 19:09:39,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-20 19:09:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:39,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-20 19:09:39,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:39,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:39,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:39,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:39,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:40,630 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 42 treesize of output 19 [2024-11-20 19:09:40,633 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 [2024-11-20 19:09:40,988 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 25 treesize of output 17 [2024-11-20 19:09:41,018 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 [2024-11-20 19:09:41,021 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 [2024-11-20 19:09:41,042 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 19:09:41,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:42,298 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 39 treesize of output 35 [2024-11-20 19:09:42,305 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 35 treesize of output 31 [2024-11-20 19:09:42,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:42,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405484151] [2024-11-20 19:09:42,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:42,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998275870] [2024-11-20 19:09:42,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998275870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:09:42,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:09:42,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-20 19:09:42,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076258569] [2024-11-20 19:09:42,658 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:42,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 19:09:42,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:42,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 19:09:42,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-11-20 19:09:42,660 INFO L87 Difference]: Start difference. First operand 180 states and 212 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 19:09:43,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:43,174 INFO L93 Difference]: Finished difference Result 197 states and 232 transitions. [2024-11-20 19:09:43,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 19:09:43,174 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2024-11-20 19:09:43,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:43,175 INFO L225 Difference]: With dead ends: 197 [2024-11-20 19:09:43,175 INFO L226 Difference]: Without dead ends: 195 [2024-11-20 19:09:43,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2024-11-20 19:09:43,176 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 43 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:43,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 312 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 19:09:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-20 19:09:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2024-11-20 19:09:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 140 states have (on average 1.3428571428571427) internal successors, (188), 163 states have internal predecessors, (188), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 12 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-20 19:09:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 217 transitions. [2024-11-20 19:09:43,193 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 217 transitions. Word has length 56 [2024-11-20 19:09:43,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:43,193 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 217 transitions. [2024-11-20 19:09:43,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 19:09:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 217 transitions. [2024-11-20 19:09:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-20 19:09:43,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:43,194 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:43,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:43,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:43,395 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:43,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:43,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1715438546, now seen corresponding path program 1 times [2024-11-20 19:09:43,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:43,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761993564] [2024-11-20 19:09:43,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:43,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:43,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91861479] [2024-11-20 19:09:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:43,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:43,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:43,418 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) [2024-11-20 19:09:43,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-20 19:09:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:43,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-20 19:09:43,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:43,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:43,723 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 8 treesize of output 1 [2024-11-20 19:09:44,138 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 [2024-11-20 19:09:44,141 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 17 treesize of output 9 [2024-11-20 19:09:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 19:09:45,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:09:54,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:09:54,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761993564] [2024-11-20 19:09:54,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:09:54,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91861479] [2024-11-20 19:09:54,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91861479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 19:09:54,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-20 19:09:54,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-20 19:09:54,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331134318] [2024-11-20 19:09:54,668 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-20 19:09:54,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 19:09:54,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:09:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 19:09:54,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=188, Unknown=3, NotChecked=0, Total=240 [2024-11-20 19:09:54,669 INFO L87 Difference]: Start difference. First operand 184 states and 217 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 19:09:58,890 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] [2024-11-20 19:09:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:09:59,284 INFO L93 Difference]: Finished difference Result 184 states and 217 transitions. [2024-11-20 19:09:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 19:09:59,285 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2024-11-20 19:09:59,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:09:59,286 INFO L225 Difference]: With dead ends: 184 [2024-11-20 19:09:59,286 INFO L226 Difference]: Without dead ends: 182 [2024-11-20 19:09:59,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=110, Invalid=393, Unknown=3, NotChecked=0, Total=506 [2024-11-20 19:09:59,286 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 139 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-20 19:09:59,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 108 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 210 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2024-11-20 19:09:59,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-20 19:09:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-20 19:09:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 140 states have (on average 1.3214285714285714) internal successors, (185), 161 states have internal predecessors, (185), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 12 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-20 19:09:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 214 transitions. [2024-11-20 19:09:59,308 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 214 transitions. Word has length 57 [2024-11-20 19:09:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:09:59,309 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 214 transitions. [2024-11-20 19:09:59,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 19:09:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 214 transitions. [2024-11-20 19:09:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-20 19:09:59,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:09:59,310 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 19:09:59,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-20 19:09:59,510 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,SelfDestructingSolverStorable30 [2024-11-20 19:09:59,510 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_30_to_38_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:09:59,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:09:59,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1956225659, now seen corresponding path program 1 times [2024-11-20 19:09:59,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:09:59,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205254474] [2024-11-20 19:09:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:59,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:09:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:09:59,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958696801] [2024-11-20 19:09:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:09:59,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:09:59,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:09:59,549 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) [2024-11-20 19:09:59,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-20 19:09:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:09:59,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-20 19:09:59,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:09:59,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 19:09:59,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 19:09:59,790 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 15 [2024-11-20 19:10:03,843 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_func_to_recursive_line_30_to_38_0_~z.base_BEFORE_CALL_33 Int) (v_func_to_recursive_line_30_to_38_0_~y.offset_BEFORE_CALL_14 Int) (v_func_to_recursive_line_30_to_38_0_~z.offset_BEFORE_CALL_33 Int) (v_func_to_recursive_line_30_to_38_0_~y.base_BEFORE_CALL_14 Int)) (= (select (select |c_#memory_int#2| v_func_to_recursive_line_30_to_38_0_~z.base_BEFORE_CALL_33) v_func_to_recursive_line_30_to_38_0_~z.offset_BEFORE_CALL_33) (select (select |c_#memory_int#3| v_func_to_recursive_line_30_to_38_0_~y.base_BEFORE_CALL_14) v_func_to_recursive_line_30_to_38_0_~y.offset_BEFORE_CALL_14))) is different from true [2024-11-20 19:10:03,883 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 [2024-11-20 19:10:03,885 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 [2024-11-20 19:10:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-20 19:10:03,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 19:10:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 19:10:04,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 19:10:04,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205254474] [2024-11-20 19:10:04,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 19:10:04,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958696801] [2024-11-20 19:10:04,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958696801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 19:10:04,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 19:10:04,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2024-11-20 19:10:04,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744118603] [2024-11-20 19:10:04,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 19:10:04,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 19:10:04,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 19:10:04,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 19:10:04,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=229, Unknown=1, NotChecked=30, Total=306 [2024-11-20 19:10:04,095 INFO L87 Difference]: Start difference. First operand 182 states and 214 transitions. Second operand has 18 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 19:10:04,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 19:10:04,776 INFO L93 Difference]: Finished difference Result 210 states and 221 transitions. [2024-11-20 19:10:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 19:10:04,776 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 57 [2024-11-20 19:10:04,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 19:10:04,777 INFO L225 Difference]: With dead ends: 210 [2024-11-20 19:10:04,777 INFO L226 Difference]: Without dead ends: 209 [2024-11-20 19:10:04,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=123, Invalid=582, Unknown=1, NotChecked=50, Total=756 [2024-11-20 19:10:04,778 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 172 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 19:10:04,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 800 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 315 Invalid, 0 Unknown, 263 Unchecked, 0.5s Time] [2024-11-20 19:10:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-20 19:10:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 186. [2024-11-20 19:10:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 144 states have (on average 1.3055555555555556) internal successors, (188), 165 states have internal predecessors, (188), 10 states have call successors, (10), 8 states have call predecessors, (10), 12 states have return successors, (19), 12 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-20 19:10:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 217 transitions. [2024-11-20 19:10:04,806 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 217 transitions. Word has length 57 [2024-11-20 19:10:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 19:10:04,806 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 217 transitions. [2024-11-20 19:10:04,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.533333333333333) internal successors, (98), 14 states have internal predecessors, (98), 6 states have call successors, (8), 7 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 19:10:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 217 transitions. [2024-11-20 19:10:04,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-20 19:10:04,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 19:10:04,807 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 19:10:04,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-20 19:10:05,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-20 19:10:05,008 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting func_to_recursive_line_30_to_38_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_30_to_38_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_30_to_38_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-11-20 19:10:05,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 19:10:05,008 INFO L85 PathProgramCache]: Analyzing trace with hash 513453360, now seen corresponding path program 1 times [2024-11-20 19:10:05,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 19:10:05,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518525559] [2024-11-20 19:10:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:05,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 19:10:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 19:10:05,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505712516] [2024-11-20 19:10:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 19:10:05,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 19:10:05,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 19:10:05,045 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 19:10:05,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-20 19:10:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 19:10:05,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-20 19:10:05,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 19:10:05,222 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