./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat1-ll.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat1-ll.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82b98e74657ce84706a43470df686c21fc227d1db1df507636ad5f146dee0144 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 20:01:44,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 20:01:44,618 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 20:01:44,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 20:01:44,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 20:01:44,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 20:01:44,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 20:01:44,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 20:01:44,661 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 20:01:44,665 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 20:01:44,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 20:01:44,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 20:01:44,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 20:01:44,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 20:01:44,667 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 20:01:44,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 20:01:44,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 20:01:44,668 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 20:01:44,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 20:01:44,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 20:01:44,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 20:01:44,672 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 20:01:44,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 20:01:44,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 20:01:44,673 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 20:01:44,673 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 20:01:44,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 20:01:44,674 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 20:01:44,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 20:01:44,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 20:01:44,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 20:01:44,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 20:01:44,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:01:44,675 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 20:01:44,675 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 20:01:44,676 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 20:01:44,676 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 20:01:44,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 20:01:44,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 20:01:44,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 20:01:44,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 20:01:44,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 20:01:44,679 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82b98e74657ce84706a43470df686c21fc227d1db1df507636ad5f146dee0144 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 20:01:45,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 20:01:45,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 20:01:45,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 20:01:45,042 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 20:01:45,042 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 20:01:45,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat1-ll.c [2024-09-12 20:01:46,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 20:01:46,800 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 20:01:46,804 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_fermat1-ll.c [2024-09-12 20:01:46,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/93ada104b/8e2246ce986744d08899f8d214dda1cb/FLAG65f493fc2 [2024-09-12 20:01:46,831 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/93ada104b/8e2246ce986744d08899f8d214dda1cb [2024-09-12 20:01:46,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 20:01:46,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 20:01:46,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 20:01:46,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 20:01:46,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 20:01:46,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:01:46" (1/1) ... [2024-09-12 20:01:46,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e59c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:46, skipping insertion in model container [2024-09-12 20:01:46,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 08:01:46" (1/1) ... [2024-09-12 20:01:46,871 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 20:01:47,033 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_fermat1-ll.c[1101,1114] [2024-09-12 20:01:47,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:01:47,091 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 20:01:47,109 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_nla-digbench/recursified_fermat1-ll.c[1101,1114] [2024-09-12 20:01:47,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 20:01:47,159 INFO L204 MainTranslator]: Completed translation [2024-09-12 20:01:47,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47 WrapperNode [2024-09-12 20:01:47,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 20:01:47,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 20:01:47,161 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 20:01:47,161 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 20:01:47,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,193 INFO L138 Inliner]: procedures = 18, calls = 82, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 20:01:47,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 20:01:47,195 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 20:01:47,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 20:01:47,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 20:01:47,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,208 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,239 INFO L175 MemorySlicer]: Split 53 memory accesses to 5 slices as follows [2, 16, 16, 11, 8]. 30 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 8 writes are split as follows [0, 2, 2, 3, 1]. [2024-09-12 20:01:47,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 20:01:47,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 20:01:47,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 20:01:47,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 20:01:47,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (1/1) ... [2024-09-12 20:01:47,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 20:01:47,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:47,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 20:01:47,305 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 20:01:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 20:01:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_36_0 [2024-09-12 20:01:47,355 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_36_0 [2024-09-12 20:01:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 20:01:47,355 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 20:01:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 20:01:47,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 20:01:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 20:01:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 20:01:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-09-12 20:01:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-09-12 20:01:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-09-12 20:01:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 20:01:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 20:01:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 20:01:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-09-12 20:01:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-09-12 20:01:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-09-12 20:01:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_38_to_43_0 [2024-09-12 20:01:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_38_to_43_0 [2024-09-12 20:01:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 20:01:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 20:01:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_46_to_51_0 [2024-09-12 20:01:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_46_to_51_0 [2024-09-12 20:01:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 20:01:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 20:01:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 20:01:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 20:01:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-09-12 20:01:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-09-12 20:01:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-09-12 20:01:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 20:01:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 20:01:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 20:01:47,464 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 20:01:47,466 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 20:01:48,190 INFO L? ?]: Removed 228 outVars from TransFormulas that were not future-live. [2024-09-12 20:01:48,190 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 20:01:48,220 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 20:01:48,222 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-12 20:01:48,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:01:48 BoogieIcfgContainer [2024-09-12 20:01:48,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 20:01:48,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 20:01:48,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 20:01:48,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 20:01:48,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 08:01:46" (1/3) ... [2024-09-12 20:01:48,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f53682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:01:48, skipping insertion in model container [2024-09-12 20:01:48,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 08:01:47" (2/3) ... [2024-09-12 20:01:48,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f53682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 08:01:48, skipping insertion in model container [2024-09-12 20:01:48,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 08:01:48" (3/3) ... [2024-09-12 20:01:48,231 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_fermat1-ll.c [2024-09-12 20:01:48,246 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 20:01:48,247 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 93 error locations. [2024-09-12 20:01:48,307 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 20:01:48,315 INFO L336 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=All, 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;@3c10676d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 20:01:48,315 INFO L337 AbstractCegarLoop]: Starting to check reachability of 93 error locations. [2024-09-12 20:01:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 236 states, 121 states have (on average 1.834710743801653) internal successors, (222), 217 states have internal predecessors, (222), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 20:01:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-12 20:01:48,329 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:48,330 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-12 20:01:48,331 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 91 more)] === [2024-09-12 20:01:48,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:48,337 INFO L85 PathProgramCache]: Analyzing trace with hash 851829640, now seen corresponding path program 1 times [2024-09-12 20:01:48,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:48,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115796263] [2024-09-12 20:01:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:48,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:48,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:01:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:01:48,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115796263] [2024-09-12 20:01:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115796263] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:48,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 20:01:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114225494] [2024-09-12 20:01:48,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:48,594 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 20:01:48,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:48,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 20:01:48,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 20:01:48,621 INFO L87 Difference]: Start difference. First operand has 236 states, 121 states have (on average 1.834710743801653) internal successors, (222), 217 states have internal predecessors, (222), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:01:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:48,766 INFO L93 Difference]: Finished difference Result 451 states and 493 transitions. [2024-09-12 20:01:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 20:01:48,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (2), 1 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 6 [2024-09-12 20:01:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:48,779 INFO L225 Difference]: With dead ends: 451 [2024-09-12 20:01:48,780 INFO L226 Difference]: Without dead ends: 226 [2024-09-12 20:01:48,785 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 20:01:48,790 INFO L434 NwaCegarLoop]: 215 mSDtfsCounter, 15 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:48,790 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 425 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:01:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-09-12 20:01:48,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2024-09-12 20:01:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 119 states have (on average 1.7563025210084033) internal successors, (209), 209 states have internal predecessors, (209), 14 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 20:01:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 235 transitions. [2024-09-12 20:01:48,867 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 235 transitions. Word has length 6 [2024-09-12 20:01:48,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:48,869 INFO L474 AbstractCegarLoop]: Abstraction has 226 states and 235 transitions. [2024-09-12 20:01:48,870 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:01:48,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 235 transitions. [2024-09-12 20:01:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-12 20:01:48,872 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:48,872 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:48,873 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 20:01:48,873 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 91 more)] === [2024-09-12 20:01:48,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash 636915151, now seen corresponding path program 1 times [2024-09-12 20:01:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:48,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341084727] [2024-09-12 20:01:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:48,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:01:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:01:48,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:48,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341084727] [2024-09-12 20:01:48,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341084727] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:48,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:48,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 20:01:48,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912109388] [2024-09-12 20:01:48,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:48,977 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 20:01:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 20:01:48,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 20:01:48,979 INFO L87 Difference]: Start difference. First operand 226 states and 235 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:01:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:49,041 INFO L93 Difference]: Finished difference Result 226 states and 235 transitions. [2024-09-12 20:01:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 20:01:49,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 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 7 [2024-09-12 20:01:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:49,047 INFO L225 Difference]: With dead ends: 226 [2024-09-12 20:01:49,047 INFO L226 Difference]: Without dead ends: 222 [2024-09-12 20:01:49,047 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 20:01:49,048 INFO L434 NwaCegarLoop]: 212 mSDtfsCounter, 14 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:49,049 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 419 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:01:49,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-09-12 20:01:49,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-09-12 20:01:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 119 states have (on average 1.7226890756302522) internal successors, (205), 205 states have internal predecessors, (205), 14 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 20:01:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 231 transitions. [2024-09-12 20:01:49,083 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 231 transitions. Word has length 7 [2024-09-12 20:01:49,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:49,084 INFO L474 AbstractCegarLoop]: Abstraction has 222 states and 231 transitions. [2024-09-12 20:01:49,085 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:01:49,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 231 transitions. [2024-09-12 20:01:49,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 20:01:49,086 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:49,086 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:49,087 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 20:01:49,087 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 91 more)] === [2024-09-12 20:01:49,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash 158786707, now seen corresponding path program 1 times [2024-09-12 20:01:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:49,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615319035] [2024-09-12 20:01:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:49,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683121008] [2024-09-12 20:01:49,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:49,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:49,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:49,127 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 20:01:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:49,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 20:01:49,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 20:01:49,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:49,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:49,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615319035] [2024-09-12 20:01:49,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:49,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683121008] [2024-09-12 20:01:49,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683121008] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:49,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:49,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 20:01:49,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991773108] [2024-09-12 20:01:49,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:49,257 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 20:01:49,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:49,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 20:01:49,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 20:01:49,259 INFO L87 Difference]: Start difference. First operand 222 states and 231 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:01:49,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:49,302 INFO L93 Difference]: Finished difference Result 222 states and 231 transitions. [2024-09-12 20:01:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 20:01:49,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 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 11 [2024-09-12 20:01:49,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:49,305 INFO L225 Difference]: With dead ends: 222 [2024-09-12 20:01:49,306 INFO L226 Difference]: Without dead ends: 220 [2024-09-12 20:01:49,306 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 20:01:49,308 INFO L434 NwaCegarLoop]: 212 mSDtfsCounter, 10 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:49,309 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 419 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 20:01:49,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-09-12 20:01:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-09-12 20:01:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 203 states have internal predecessors, (203), 14 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 20:01:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 229 transitions. [2024-09-12 20:01:49,333 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 229 transitions. Word has length 11 [2024-09-12 20:01:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:49,333 INFO L474 AbstractCegarLoop]: Abstraction has 220 states and 229 transitions. [2024-09-12 20:01:49,333 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 20:01:49,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 229 transitions. [2024-09-12 20:01:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 20:01:49,335 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:49,335 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:49,352 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 20:01:49,539 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:49,540 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 91 more)] === [2024-09-12 20:01:49,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:49,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1847661664, now seen corresponding path program 1 times [2024-09-12 20:01:49,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:49,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712205781] [2024-09-12 20:01:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 20:01:49,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987881187] [2024-09-12 20:01:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:49,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:49,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 20:01:49,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 20:01:49,615 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 20:01:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:49,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 20:01:49,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 20:01:49,751 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 [2024-09-12 20:01:49,867 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 [2024-09-12 20:01:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 20:01:49,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 20:01:49,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:49,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712205781] [2024-09-12 20:01:49,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 20:01:49,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987881187] [2024-09-12 20:01:49,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987881187] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:49,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:49,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 20:01:49,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016428847] [2024-09-12 20:01:49,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:49,880 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 20:01:49,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:49,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 20:01:49,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 20:01:49,881 INFO L87 Difference]: Start difference. First operand 220 states and 229 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:50,013 INFO L93 Difference]: Finished difference Result 220 states and 229 transitions. [2024-09-12 20:01:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 20:01:50,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-09-12 20:01:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:50,015 INFO L225 Difference]: With dead ends: 220 [2024-09-12 20:01:50,015 INFO L226 Difference]: Without dead ends: 219 [2024-09-12 20:01:50,016 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-12 20:01:50,017 INFO L434 NwaCegarLoop]: 214 mSDtfsCounter, 207 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:50,018 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 610 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:01:50,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-12 20:01:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-09-12 20:01:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 119 states have (on average 1.6974789915966386) internal successors, (202), 202 states have internal predecessors, (202), 14 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 20:01:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 228 transitions. [2024-09-12 20:01:50,045 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 228 transitions. Word has length 30 [2024-09-12 20:01:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:50,047 INFO L474 AbstractCegarLoop]: Abstraction has 219 states and 228 transitions. [2024-09-12 20:01:50,047 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:50,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:50,048 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 228 transitions. [2024-09-12 20:01:50,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 20:01:50,049 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:50,049 INFO L216 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] [2024-09-12 20:01:50,072 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 20:01:50,250 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 20:01:50,251 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 91 more)] === [2024-09-12 20:01:50,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:50,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1442936621, now seen corresponding path program 1 times [2024-09-12 20:01:50,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:50,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546123433] [2024-09-12 20:01:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:50,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 20:01:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 20:01:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 20:01:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 20:01:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 20:01:50,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 20:01:50,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546123433] [2024-09-12 20:01:50,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546123433] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 20:01:50,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 20:01:50,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 20:01:50,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750651167] [2024-09-12 20:01:50,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 20:01:50,732 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 20:01:50,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 20:01:50,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 20:01:50,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 20:01:50,734 INFO L87 Difference]: Start difference. First operand 219 states and 228 transitions. Second operand has 7 states, 5 states have (on average 4.8) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 20:01:50,889 INFO L93 Difference]: Finished difference Result 219 states and 228 transitions. [2024-09-12 20:01:50,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 20:01:50,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-09-12 20:01:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 20:01:50,891 INFO L225 Difference]: With dead ends: 219 [2024-09-12 20:01:50,891 INFO L226 Difference]: Without dead ends: 218 [2024-09-12 20:01:50,891 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-12 20:01:50,893 INFO L434 NwaCegarLoop]: 219 mSDtfsCounter, 3 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 20:01:50,893 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1270 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 20:01:50,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-09-12 20:01:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-09-12 20:01:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 119 states have (on average 1.6890756302521008) internal successors, (201), 201 states have internal predecessors, (201), 14 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 20:01:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 227 transitions. [2024-09-12 20:01:50,917 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 227 transitions. Word has length 31 [2024-09-12 20:01:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 20:01:50,918 INFO L474 AbstractCegarLoop]: Abstraction has 218 states and 227 transitions. [2024-09-12 20:01:50,918 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 20:01:50,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 227 transitions. [2024-09-12 20:01:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 20:01:50,919 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 20:01:50,919 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 20:01:50,919 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 20:01:50,919 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 91 more)] === [2024-09-12 20:01:50,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 20:01:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash 61073920, now seen corresponding path program 1 times [2024-09-12 20:01:50,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 20:01:50,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033460718] [2024-09-12 20:01:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 20:01:50,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 20:01:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat