./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'ab365eb388b6073fe9b18a07d6de0f6e90e5d145e13f5e07857ef91530e5178e'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 ab365eb388b6073fe9b18a07d6de0f6e90e5d145e13f5e07857ef91530e5178e --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 20:56:11,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 20:56:11,404 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-07 20:56:11,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 20:56:11,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 20:56:11,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 20:56:11,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 20:56:11,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 20:56:11,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 20:56:11,435 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 20:56:11,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 20:56:11,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 20:56:11,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 20:56:11,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 20:56:11,436 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 20:56:11,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 20:56:11,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 20:56:11,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 20:56:11,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 20:56:11,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 20:56:11,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 20:56:11,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 20:56:11,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 20:56:11,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 20:56:11,437 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 20:56:11,437 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-07 20:56:11,437 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 20:56:11,437 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 20:56:11,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 20:56:11,438 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 20:56:11,438 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 20:56:11,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 20:56:11,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 20:56:11,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 20:56:11,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 20:56:11,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 20:56:11,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 20:56:11,439 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 20:56:11,439 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 20:56:11,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 20:56:11,439 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 20:56:11,439 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 20:56:11,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 20:56:11,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 20:56:11,439 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> ab365eb388b6073fe9b18a07d6de0f6e90e5d145e13f5e07857ef91530e5178e [2024-11-07 20:56:11,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 20:56:11,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 20:56:11,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 20:56:11,750 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 20:56:11,750 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 20:56:11,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu.c [2024-11-07 20:56:12,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 20:56:13,227 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 20:56:13,228 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu.c [2024-11-07 20:56:13,238 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b3b221f9e/22d56fab51a4434ba99ec5aaab76863a/FLAG3af3bc459 [2024-11-07 20:56:13,256 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b3b221f9e/22d56fab51a4434ba99ec5aaab76863a [2024-11-07 20:56:13,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 20:56:13,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 20:56:13,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 20:56:13,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 20:56:13,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 20:56:13,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225f4dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13, skipping insertion in model container [2024-11-07 20:56:13,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,286 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 20:56:13,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 20:56:13,457 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 20:56:13,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 20:56:13,511 INFO L204 MainTranslator]: Completed translation [2024-11-07 20:56:13,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13 WrapperNode [2024-11-07 20:56:13,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 20:56:13,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 20:56:13,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 20:56:13,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 20:56:13,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,559 INFO L138 Inliner]: procedures = 16, calls = 100, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 197 [2024-11-07 20:56:13,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 20:56:13,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 20:56:13,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 20:56:13,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 20:56:13,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,571 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,589 INFO L175 MemorySlicer]: Split 66 memory accesses to 6 slices as follows [2, 21, 11, 15, 12, 5]. 32 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 2, 2, 2, 2, 1]. [2024-11-07 20:56:13,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 20:56:13,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 20:56:13,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 20:56:13,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 20:56:13,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (1/1) ... [2024-11-07 20:56:13,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 20:56:13,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 20:56:13,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 20:56:13,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 20:56:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 20:56:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 20:56:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 20:56:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 20:56:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 20:56:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-07 20:56:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-07 20:56:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 20:56:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 20:56:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 20:56:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 20:56:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 20:56:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-07 20:56:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-07 20:56:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_39_0 [2024-11-07 20:56:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_39_0 [2024-11-07 20:56:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 20:56:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 20:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 20:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 20:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 20:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 20:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-07 20:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-07 20:56:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-07 20:56:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-07 20:56:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 20:56:13,793 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 20:56:13,795 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 20:56:14,656 INFO L? ?]: Removed 357 outVars from TransFormulas that were not future-live. [2024-11-07 20:56:14,657 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 20:56:14,670 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 20:56:14,670 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 20:56:14,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:56:14 BoogieIcfgContainer [2024-11-07 20:56:14,671 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 20:56:14,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 20:56:14,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 20:56:14,677 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 20:56:14,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:56:13" (1/3) ... [2024-11-07 20:56:14,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d2c5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:56:14, skipping insertion in model container [2024-11-07 20:56:14,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:13" (2/3) ... [2024-11-07 20:56:14,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d2c5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:56:14, skipping insertion in model container [2024-11-07 20:56:14,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:56:14" (3/3) ... [2024-11-07 20:56:14,679 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_cohencu.c [2024-11-07 20:56:14,690 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 20:56:14,691 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 138 error locations. [2024-11-07 20:56:14,743 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 20:56:14,753 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;@2205dba4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 20:56:14,753 INFO L334 AbstractCegarLoop]: Starting to check reachability of 138 error locations. [2024-11-07 20:56:14,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 317 states, 163 states have (on average 1.8650306748466257) internal successors, (304), 302 states have internal predecessors, (304), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 20:56:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-07 20:56:14,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:14,766 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 20:56:14,767 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:14,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:14,771 INFO L85 PathProgramCache]: Analyzing trace with hash 476001869, now seen corresponding path program 1 times [2024-11-07 20:56:14,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:14,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336244] [2024-11-07 20:56:14,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:14,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 20:56:15,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:15,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336244] [2024-11-07 20:56:15,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 20:56:15,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 20:56:15,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 20:56:15,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631633766] [2024-11-07 20:56:15,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 20:56:15,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 20:56:15,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:15,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 20:56:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 20:56:15,284 INFO L87 Difference]: Start difference. First operand has 317 states, 163 states have (on average 1.8650306748466257) internal successors, (304), 302 states have internal predecessors, (304), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) 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) [2024-11-07 20:56:15,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:15,538 INFO L93 Difference]: Finished difference Result 738 states and 792 transitions. [2024-11-07 20:56:15,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 20:56:15,540 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 [2024-11-07 20:56:15,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:15,550 INFO L225 Difference]: With dead ends: 738 [2024-11-07 20:56:15,551 INFO L226 Difference]: Without dead ends: 418 [2024-11-07 20:56:15,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-07 20:56:15,561 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 205 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:15,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1530 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 20:56:15,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-07 20:56:15,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 371. [2024-11-07 20:56:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 213 states have (on average 1.8497652582159625) internal successors, (394), 351 states have internal predecessors, (394), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-07 20:56:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 429 transitions. [2024-11-07 20:56:15,635 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 429 transitions. Word has length 6 [2024-11-07 20:56:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:15,636 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 429 transitions. [2024-11-07 20:56:15,637 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) [2024-11-07 20:56:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 429 transitions. [2024-11-07 20:56:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-07 20:56:15,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:15,638 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:56:15,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 20:56:15,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_27_to_39_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:15,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash 13280284, now seen corresponding path program 1 times [2024-11-07 20:56:15,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:15,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400275535] [2024-11-07 20:56:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:15,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:15,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-07 20:56:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 20:56:15,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:15,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400275535] [2024-11-07 20:56:15,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400275535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 20:56:15,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 20:56:15,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 20:56:15,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759929850] [2024-11-07 20:56:15,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 20:56:15,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 20:56:15,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:15,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 20:56:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 20:56:15,914 INFO L87 Difference]: Start difference. First operand 371 states and 429 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-11-07 20:56:16,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:16,102 INFO L93 Difference]: Finished difference Result 418 states and 434 transitions. [2024-11-07 20:56:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 20:56:16,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2024-11-07 20:56:16,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:16,105 INFO L225 Difference]: With dead ends: 418 [2024-11-07 20:56:16,105 INFO L226 Difference]: Without dead ends: 414 [2024-11-07 20:56:16,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-07 20:56:16,106 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 200 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:16,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1479 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 20:56:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-07 20:56:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 371. [2024-11-07 20:56:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 213 states have (on average 1.8309859154929577) internal successors, (390), 351 states have internal predecessors, (390), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-07 20:56:16,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 425 transitions. [2024-11-07 20:56:16,132 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 425 transitions. Word has length 16 [2024-11-07 20:56:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:16,132 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 425 transitions. [2024-11-07 20:56:16,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2024-11-07 20:56:16,133 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 425 transitions. [2024-11-07 20:56:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-07 20:56:16,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:16,133 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] [2024-11-07 20:56:16,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 20:56:16,133 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_27_to_39_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:16,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:16,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1803988512, now seen corresponding path program 1 times [2024-11-07 20:56:16,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:16,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2441170] [2024-11-07 20:56:16,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:16,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:16,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-07 20:56:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 20:56:16,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:16,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2441170] [2024-11-07 20:56:16,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2441170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 20:56:16,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 20:56:16,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 20:56:16,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661392079] [2024-11-07 20:56:16,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 20:56:16,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 20:56:16,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 20:56:16,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 20:56:16,342 INFO L87 Difference]: Start difference. First operand 371 states and 425 transitions. Second operand has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-07 20:56:16,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:16,546 INFO L93 Difference]: Finished difference Result 414 states and 430 transitions. [2024-11-07 20:56:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 20:56:16,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 20 [2024-11-07 20:56:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:16,549 INFO L225 Difference]: With dead ends: 414 [2024-11-07 20:56:16,549 INFO L226 Difference]: Without dead ends: 412 [2024-11-07 20:56:16,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-07 20:56:16,550 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 186 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:16,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1481 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 20:56:16,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-07 20:56:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 371. [2024-11-07 20:56:16,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 213 states have (on average 1.8215962441314555) internal successors, (388), 351 states have internal predecessors, (388), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-07 20:56:16,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 423 transitions. [2024-11-07 20:56:16,576 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 423 transitions. Word has length 20 [2024-11-07 20:56:16,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:16,576 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 423 transitions. [2024-11-07 20:56:16,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-07 20:56:16,578 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 423 transitions. [2024-11-07 20:56:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-07 20:56:16,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:16,579 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:56:16,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 20:56:16,579 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_27_to_39_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:16,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1533829314, now seen corresponding path program 1 times [2024-11-07 20:56:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:16,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729209096] [2024-11-07 20:56:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:16,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:16,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-07 20:56:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 20:56:16,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:16,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729209096] [2024-11-07 20:56:16,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729209096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 20:56:16,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 20:56:16,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 20:56:16,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009262754] [2024-11-07 20:56:16,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 20:56:16,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 20:56:16,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:16,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 20:56:16,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 20:56:16,782 INFO L87 Difference]: Start difference. First operand 371 states and 423 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-07 20:56:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:16,981 INFO L93 Difference]: Finished difference Result 412 states and 428 transitions. [2024-11-07 20:56:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 20:56:16,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 22 [2024-11-07 20:56:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:16,983 INFO L225 Difference]: With dead ends: 412 [2024-11-07 20:56:16,985 INFO L226 Difference]: Without dead ends: 410 [2024-11-07 20:56:16,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-07 20:56:16,986 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 188 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:16,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1549 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 20:56:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-07 20:56:17,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 371. [2024-11-07 20:56:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 213 states have (on average 1.812206572769953) internal successors, (386), 351 states have internal predecessors, (386), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-07 20:56:17,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 421 transitions. [2024-11-07 20:56:17,006 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 421 transitions. Word has length 22 [2024-11-07 20:56:17,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:17,007 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 421 transitions. [2024-11-07 20:56:17,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-07 20:56:17,007 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 421 transitions. [2024-11-07 20:56:17,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-07 20:56:17,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:17,008 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] [2024-11-07 20:56:17,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 20:56:17,008 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_27_to_39_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:17,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:17,009 INFO L85 PathProgramCache]: Analyzing trace with hash 304068537, now seen corresponding path program 1 times [2024-11-07 20:56:17,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:17,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964393402] [2024-11-07 20:56:17,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:17,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:17,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-07 20:56:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 20:56:17,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:17,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964393402] [2024-11-07 20:56:17,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964393402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 20:56:17,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 20:56:17,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 20:56:17,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054534300] [2024-11-07 20:56:17,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 20:56:17,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 20:56:17,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:17,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 20:56:17,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 20:56:17,190 INFO L87 Difference]: Start difference. First operand 371 states and 421 transitions. Second operand has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 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) [2024-11-07 20:56:17,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:17,354 INFO L93 Difference]: Finished difference Result 410 states and 426 transitions. [2024-11-07 20:56:17,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 20:56:17,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 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 [2024-11-07 20:56:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:17,357 INFO L225 Difference]: With dead ends: 410 [2024-11-07 20:56:17,357 INFO L226 Difference]: Without dead ends: 408 [2024-11-07 20:56:17,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-07 20:56:17,358 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 175 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:17,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1483 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 20:56:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-07 20:56:17,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 371. [2024-11-07 20:56:17,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 213 states have (on average 1.8028169014084507) internal successors, (384), 351 states have internal predecessors, (384), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-07 20:56:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 419 transitions. [2024-11-07 20:56:17,376 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 419 transitions. Word has length 23 [2024-11-07 20:56:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:17,376 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 419 transitions. [2024-11-07 20:56:17,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 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) [2024-11-07 20:56:17,377 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 419 transitions. [2024-11-07 20:56:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-07 20:56:17,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:17,377 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:56:17,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 20:56:17,378 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_27_to_39_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:17,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:17,378 INFO L85 PathProgramCache]: Analyzing trace with hash 952671999, now seen corresponding path program 1 times [2024-11-07 20:56:17,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:17,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043947663] [2024-11-07 20:56:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:17,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 20:56:17,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112589360] [2024-11-07 20:56:17,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:17,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 20:56:17,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 20:56:17,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 20:56:17,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 20:56:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:17,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-07 20:56:17,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 20:56:17,560 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 [2024-11-07 20:56:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 20:56:17,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 20:56:18,746 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 16 [2024-11-07 20:56:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 20:56:18,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:18,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043947663] [2024-11-07 20:56:18,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 20:56:18,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112589360] [2024-11-07 20:56:18,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112589360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 20:56:18,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 20:56:18,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-11-07 20:56:18,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043174052] [2024-11-07 20:56:18,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 20:56:18,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 20:56:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:18,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 20:56:18,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-07 20:56:18,847 INFO L87 Difference]: Start difference. First operand 371 states and 419 transitions. Second operand has 17 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 20:56:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:19,735 INFO L93 Difference]: Finished difference Result 602 states and 621 transitions. [2024-11-07 20:56:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 20:56:19,736 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2024-11-07 20:56:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:19,739 INFO L225 Difference]: With dead ends: 602 [2024-11-07 20:56:19,739 INFO L226 Difference]: Without dead ends: 598 [2024-11-07 20:56:19,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2024-11-07 20:56:19,742 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 772 mSDsluCounter, 3507 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 3781 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:19,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 3781 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-07 20:56:19,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2024-11-07 20:56:19,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 453. [2024-11-07 20:56:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.8131487889273357) internal successors, (524), 427 states have internal predecessors, (524), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-07 20:56:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 569 transitions. [2024-11-07 20:56:19,767 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 569 transitions. Word has length 32 [2024-11-07 20:56:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:19,767 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 569 transitions. [2024-11-07 20:56:19,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 20:56:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 569 transitions. [2024-11-07 20:56:19,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-07 20:56:19,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:19,768 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:56:19,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 20:56:19,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 20:56:19,973 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_27_to_39_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:19,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1089407434, now seen corresponding path program 1 times [2024-11-07 20:56:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720080358] [2024-11-07 20:56:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 20:56:20,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250995119] [2024-11-07 20:56:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:20,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 20:56:20,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 20:56:20,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 20:56:20,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 20:56:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:20,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-07 20:56:20,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 20:56:20,118 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 [2024-11-07 20:56:20,122 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 [2024-11-07 20:56:20,165 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 [2024-11-07 20:56:20,671 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 [2024-11-07 20:56:20,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 20:56:20,685 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 [2024-11-07 20:56:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 20:56:20,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 20:56:20,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720080358] [2024-11-07 20:56:20,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 20:56:20,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250995119] [2024-11-07 20:56:20,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250995119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 20:56:20,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-07 20:56:20,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-07 20:56:20,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100746723] [2024-11-07 20:56:20,798 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-07 20:56:20,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 20:56:20,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:20,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 20:56:20,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-07 20:56:20,799 INFO L87 Difference]: Start difference. First operand 453 states and 569 transitions. Second operand has 12 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-07 20:56:25,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 20:56:29,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 20:56:33,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 20:56:37,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 20:56:41,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 20:56:45,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 20:56:49,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 20:56:53,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-07 20:56:53,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:53,771 INFO L93 Difference]: Finished difference Result 594 states and 613 transitions. [2024-11-07 20:56:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 20:56:53,772 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-07 20:56:53,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:53,775 INFO L225 Difference]: With dead ends: 594 [2024-11-07 20:56:53,775 INFO L226 Difference]: Without dead ends: 593 [2024-11-07 20:56:53,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2024-11-07 20:56:53,777 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 622 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 33 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:53,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 2576 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 617 Invalid, 8 Unknown, 0 Unchecked, 32.7s Time] [2024-11-07 20:56:53,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-07 20:56:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 453. [2024-11-07 20:56:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.8096885813148789) internal successors, (523), 427 states have internal predecessors, (523), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-07 20:56:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2024-11-07 20:56:53,813 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 42 [2024-11-07 20:56:53,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:53,813 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2024-11-07 20:56:53,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-07 20:56:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2024-11-07 20:56:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-07 20:56:53,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:53,817 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:56:53,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 20:56:54,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 20:56:54,022 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_27_to_39_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:54,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash 588107993, now seen corresponding path program 1 times [2024-11-07 20:56:54,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:54,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400469293] [2024-11-07 20:56:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:54,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 20:56:54,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837455103] [2024-11-07 20:56:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:54,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 20:56:54,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 20:56:54,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 20:56:54,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 20:56:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:54,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-07 20:56:54,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 20:56:54,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 20:56:54,171 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 [2024-11-07 20:56:54,217 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 [2024-11-07 20:56:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 20:56:54,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 20:56:54,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400469293] [2024-11-07 20:56:54,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 20:56:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837455103] [2024-11-07 20:56:54,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837455103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 20:56:54,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-07 20:56:54,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-07 20:56:54,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219944476] [2024-11-07 20:56:54,888 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-07 20:56:54,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 20:56:54,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:54,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 20:56:54,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-07 20:56:54,890 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-07 20:56:55,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:55,520 INFO L93 Difference]: Finished difference Result 593 states and 612 transitions. [2024-11-07 20:56:55,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 20:56:55,521 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43 [2024-11-07 20:56:55,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:55,524 INFO L225 Difference]: With dead ends: 593 [2024-11-07 20:56:55,524 INFO L226 Difference]: Without dead ends: 592 [2024-11-07 20:56:55,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-07 20:56:55,525 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 358 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:55,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 2068 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 20:56:55,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-07 20:56:55,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2024-11-07 20:56:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.806228373702422) internal successors, (522), 427 states have internal predecessors, (522), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-07 20:56:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 567 transitions. [2024-11-07 20:56:55,541 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 567 transitions. Word has length 43 [2024-11-07 20:56:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:55,542 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 567 transitions. [2024-11-07 20:56:55,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-07 20:56:55,542 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 567 transitions. [2024-11-07 20:56:55,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 20:56:55,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:55,543 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:56:55,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 20:56:55,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 20:56:55,744 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_27_to_39_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:55,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:55,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1051478680, now seen corresponding path program 1 times [2024-11-07 20:56:55,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:55,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921493110] [2024-11-07 20:56:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:55,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:55,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-07 20:56:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:55,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 20:56:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:55,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 20:56:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 20:56:55,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:55,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921493110] [2024-11-07 20:56:55,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921493110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 20:56:55,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 20:56:55,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 20:56:55,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772894015] [2024-11-07 20:56:55,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 20:56:55,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 20:56:55,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 20:56:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 20:56:55,946 INFO L87 Difference]: Start difference. First operand 453 states and 567 transitions. Second operand has 6 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:56:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:56,171 INFO L93 Difference]: Finished difference Result 560 states and 580 transitions. [2024-11-07 20:56:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 20:56:56,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2024-11-07 20:56:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:56,176 INFO L225 Difference]: With dead ends: 560 [2024-11-07 20:56:56,176 INFO L226 Difference]: Without dead ends: 558 [2024-11-07 20:56:56,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-07 20:56:56,177 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 313 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:56,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1431 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 20:56:56,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-07 20:56:56,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 453. [2024-11-07 20:56:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7993079584775087) internal successors, (520), 427 states have internal predecessors, (520), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-07 20:56:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 565 transitions. [2024-11-07 20:56:56,194 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 565 transitions. Word has length 44 [2024-11-07 20:56:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:56,194 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 565 transitions. [2024-11-07 20:56:56,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:56:56,194 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 565 transitions. [2024-11-07 20:56:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-07 20:56:56,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:56,196 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:56:56,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 20:56:56,196 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_27_to_39_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:56,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:56,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1153699578, now seen corresponding path program 1 times [2024-11-07 20:56:56,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:56,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943481934] [2024-11-07 20:56:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:56,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:56,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-07 20:56:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:56,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 20:56:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:56,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 20:56:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 20:56:56,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:56,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943481934] [2024-11-07 20:56:56,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943481934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 20:56:56,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 20:56:56,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 20:56:56,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227026204] [2024-11-07 20:56:56,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 20:56:56,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 20:56:56,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:56,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 20:56:56,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 20:56:56,445 INFO L87 Difference]: Start difference. First operand 453 states and 565 transitions. Second operand has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:56:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:56,799 INFO L93 Difference]: Finished difference Result 558 states and 578 transitions. [2024-11-07 20:56:56,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 20:56:56,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-11-07 20:56:56,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:56,803 INFO L225 Difference]: With dead ends: 558 [2024-11-07 20:56:56,804 INFO L226 Difference]: Without dead ends: 557 [2024-11-07 20:56:56,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-07 20:56:56,805 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 328 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:56,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1483 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 20:56:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-07 20:56:56,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 453. [2024-11-07 20:56:56,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7958477508650519) internal successors, (519), 427 states have internal predecessors, (519), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-07 20:56:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 564 transitions. [2024-11-07 20:56:56,826 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 564 transitions. Word has length 46 [2024-11-07 20:56:56,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:56,826 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 564 transitions. [2024-11-07 20:56:56,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:56:56,827 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 564 transitions. [2024-11-07 20:56:56,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-07 20:56:56,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:56,827 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:56:56,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 20:56:56,827 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_27_to_39_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:56,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1404948637, now seen corresponding path program 1 times [2024-11-07 20:56:56,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:56,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079566838] [2024-11-07 20:56:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:56,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:57,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-07 20:56:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:57,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 20:56:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:57,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 20:56:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 20:56:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079566838] [2024-11-07 20:56:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079566838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 20:56:57,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 20:56:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 20:56:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228049466] [2024-11-07 20:56:57,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 20:56:57,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 20:56:57,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 20:56:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 20:56:57,047 INFO L87 Difference]: Start difference. First operand 453 states and 564 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:56:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:57,435 INFO L93 Difference]: Finished difference Result 557 states and 577 transitions. [2024-11-07 20:56:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 20:56:57,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2024-11-07 20:56:57,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:57,437 INFO L225 Difference]: With dead ends: 557 [2024-11-07 20:56:57,437 INFO L226 Difference]: Without dead ends: 556 [2024-11-07 20:56:57,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-07 20:56:57,438 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 306 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:57,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1431 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 20:56:57,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-11-07 20:56:57,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 453. [2024-11-07 20:56:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.792387543252595) internal successors, (518), 427 states have internal predecessors, (518), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-07 20:56:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 563 transitions. [2024-11-07 20:56:57,454 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 563 transitions. Word has length 47 [2024-11-07 20:56:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:57,454 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 563 transitions. [2024-11-07 20:56:57,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:56:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 563 transitions. [2024-11-07 20:56:57,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-07 20:56:57,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:57,458 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:56:57,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 20:56:57,458 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_27_to_39_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:57,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:57,459 INFO L85 PathProgramCache]: Analyzing trace with hash 603734876, now seen corresponding path program 1 times [2024-11-07 20:56:57,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:57,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151685680] [2024-11-07 20:56:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:57,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:57,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-07 20:56:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:57,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 20:56:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:57,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 20:56:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 20:56:57,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:57,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151685680] [2024-11-07 20:56:57,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151685680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 20:56:57,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 20:56:57,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 20:56:57,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526664921] [2024-11-07 20:56:57,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 20:56:57,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 20:56:57,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:57,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 20:56:57,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 20:56:57,651 INFO L87 Difference]: Start difference. First operand 453 states and 563 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:56:57,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:56:57,860 INFO L93 Difference]: Finished difference Result 568 states and 588 transitions. [2024-11-07 20:56:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 20:56:57,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2024-11-07 20:56:57,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:56:57,862 INFO L225 Difference]: With dead ends: 568 [2024-11-07 20:56:57,862 INFO L226 Difference]: Without dead ends: 566 [2024-11-07 20:56:57,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-07 20:56:57,864 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 311 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 20:56:57,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1423 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 20:56:57,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-07 20:56:57,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 453. [2024-11-07 20:56:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7854671280276817) internal successors, (516), 427 states have internal predecessors, (516), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-07 20:56:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 561 transitions. [2024-11-07 20:56:57,881 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 561 transitions. Word has length 48 [2024-11-07 20:56:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:56:57,882 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 561 transitions. [2024-11-07 20:56:57,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:56:57,882 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 561 transitions. [2024-11-07 20:56:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-07 20:56:57,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:56:57,884 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:56:57,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 20:56:57,884 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_27_to_39_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:56:57,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:56:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash 368633790, now seen corresponding path program 1 times [2024-11-07 20:56:57,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:56:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718821186] [2024-11-07 20:56:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:57,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:56:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-07 20:56:57,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388387340] [2024-11-07 20:56:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:56:57,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 20:56:57,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 20:56:57,914 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 20:56:57,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 20:56:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:56:58,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-07 20:56:58,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 20:56:58,041 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 [2024-11-07 20:56:58,047 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 [2024-11-07 20:56:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 20:56:58,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 20:56:59,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:56:59,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718821186] [2024-11-07 20:56:59,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-07 20:56:59,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388387340] [2024-11-07 20:56:59,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388387340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 20:56:59,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-07 20:56:59,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-07 20:56:59,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494879819] [2024-11-07 20:56:59,242 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-07 20:56:59,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 20:56:59,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:56:59,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 20:56:59,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-07 20:56:59,244 INFO L87 Difference]: Start difference. First operand 453 states and 561 transitions. Second operand has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-07 20:57:00,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:57:00,836 INFO L93 Difference]: Finished difference Result 586 states and 605 transitions. [2024-11-07 20:57:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 20:57:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2024-11-07 20:57:00,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:57:00,839 INFO L225 Difference]: With dead ends: 586 [2024-11-07 20:57:00,839 INFO L226 Difference]: Without dead ends: 584 [2024-11-07 20:57:00,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=267, Invalid=1215, Unknown=0, NotChecked=0, Total=1482 [2024-11-07 20:57:00,840 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 644 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 20:57:00,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 2972 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 20:57:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-07 20:57:00,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 453. [2024-11-07 20:57:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.778546712802768) internal successors, (514), 427 states have internal predecessors, (514), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-07 20:57:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 559 transitions. [2024-11-07 20:57:00,856 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 559 transitions. Word has length 50 [2024-11-07 20:57:00,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:57:00,857 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 559 transitions. [2024-11-07 20:57:00,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-07 20:57:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 559 transitions. [2024-11-07 20:57:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-07 20:57:00,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:57:00,858 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:57:00,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 20:57:01,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-07 20:57:01,062 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_27_to_39_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:57:01,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:57:01,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2069756960, now seen corresponding path program 1 times [2024-11-07 20:57:01,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:57:01,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286296076] [2024-11-07 20:57:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:57:01,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:57:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:57:01,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-07 20:57:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:57:01,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 20:57:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:57:01,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 20:57:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:57:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 20:57:01,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:57:01,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286296076] [2024-11-07 20:57:01,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286296076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 20:57:01,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 20:57:01,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 20:57:01,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760069655] [2024-11-07 20:57:01,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 20:57:01,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 20:57:01,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:57:01,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 20:57:01,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 20:57:01,273 INFO L87 Difference]: Start difference. First operand 453 states and 559 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:57:01,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:57:01,479 INFO L93 Difference]: Finished difference Result 576 states and 596 transitions. [2024-11-07 20:57:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 20:57:01,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-07 20:57:01,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:57:01,482 INFO L225 Difference]: With dead ends: 576 [2024-11-07 20:57:01,482 INFO L226 Difference]: Without dead ends: 575 [2024-11-07 20:57:01,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-07 20:57:01,483 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 311 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 20:57:01,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1414 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 20:57:01,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-07 20:57:01,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 453. [2024-11-07 20:57:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7750865051903115) internal successors, (513), 427 states have internal predecessors, (513), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-07 20:57:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 558 transitions. [2024-11-07 20:57:01,500 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 558 transitions. Word has length 52 [2024-11-07 20:57:01,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:57:01,500 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 558 transitions. [2024-11-07 20:57:01,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:57:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 558 transitions. [2024-11-07 20:57:01,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-07 20:57:01,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:57:01,501 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:57:01,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 20:57:01,501 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_27_to_39_0Err29ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:57:01,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:57:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash -262043581, now seen corresponding path program 1 times [2024-11-07 20:57:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:57:01,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807857853] [2024-11-07 20:57:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:57:01,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:57:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:57:01,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-07 20:57:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:57:01,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 20:57:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:57:01,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-07 20:57:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 20:57:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 20:57:01,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 20:57:01,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807857853] [2024-11-07 20:57:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807857853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 20:57:01,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 20:57:01,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 20:57:01,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323760916] [2024-11-07 20:57:01,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 20:57:01,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 20:57:01,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 20:57:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 20:57:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 20:57:01,648 INFO L87 Difference]: Start difference. First operand 453 states and 558 transitions. Second operand has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:57:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 20:57:01,865 INFO L93 Difference]: Finished difference Result 575 states and 595 transitions. [2024-11-07 20:57:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 20:57:01,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2024-11-07 20:57:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 20:57:01,868 INFO L225 Difference]: With dead ends: 575 [2024-11-07 20:57:01,868 INFO L226 Difference]: Without dead ends: 574 [2024-11-07 20:57:01,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-07 20:57:01,869 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 308 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 20:57:01,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1416 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 20:57:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-07 20:57:01,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 453. [2024-11-07 20:57:01,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7716262975778547) internal successors, (512), 427 states have internal predecessors, (512), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-07 20:57:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 557 transitions. [2024-11-07 20:57:01,885 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 557 transitions. Word has length 53 [2024-11-07 20:57:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 20:57:01,885 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 557 transitions. [2024-11-07 20:57:01,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 20:57:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 557 transitions. [2024-11-07 20:57:01,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-07 20:57:01,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 20:57:01,886 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 20:57:01,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 20:57:01,886 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_27_to_39_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_27_to_39_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_27_to_39_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-07 20:57:01,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 20:57:01,887 INFO L85 PathProgramCache]: Analyzing trace with hash 466583682, now seen corresponding path program 1 times [2024-11-07 20:57:01,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 20:57:01,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479155847] [2024-11-07 20:57:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 20:57:01,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 20:57:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat