./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/fibo_5-2.yml/witness.yml --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03fe66fa Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/fibo_5-2.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.yaml-violation-witnesses-03fe66f-m [2024-08-15 18:29:40,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-15 18:29:41,087 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-15 18:29:41,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-15 18:29:41,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-15 18:29:41,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-15 18:29:41,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-15 18:29:41,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-15 18:29:41,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-15 18:29:41,145 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-15 18:29:41,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-15 18:29:41,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-15 18:29:41,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-15 18:29:41,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-15 18:29:41,146 INFO L153 SettingsManager]: * Use SBE=true [2024-08-15 18:29:41,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-15 18:29:41,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-15 18:29:41,149 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-15 18:29:41,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-15 18:29:41,149 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-15 18:29:41,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-15 18:29:41,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-15 18:29:41,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-15 18:29:41,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-15 18:29:41,155 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-15 18:29:41,155 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-15 18:29:41,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-15 18:29:41,155 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-15 18:29:41,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-15 18:29:41,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-15 18:29:41,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-15 18:29:41,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-15 18:29:41,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-15 18:29:41,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-15 18:29:41,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-15 18:29:41,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-15 18:29:41,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-15 18:29:41,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-15 18:29:41,158 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-15 18:29:41,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-15 18:29:41,162 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-15 18:29:41,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-15 18:29:41,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-15 18:29:41,163 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-15 18:29:41,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-15 18:29:41,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-15 18:29:41,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-15 18:29:41,492 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-15 18:29:41,492 INFO L274 PluginConnector]: CDTParser initialized [2024-08-15 18:29:41,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2024-08-15 18:29:42,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-15 18:29:42,953 INFO L384 CDTParser]: Found 1 translation units. [2024-08-15 18:29:42,954 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2024-08-15 18:29:42,964 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11fb42e1d/d91b6b6078224cceac64e521304952c8/FLAG89171c0ac [2024-08-15 18:29:42,982 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11fb42e1d/d91b6b6078224cceac64e521304952c8 [2024-08-15 18:29:42,985 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-15 18:29:42,987 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-15 18:29:42,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/fibo_5-2.yml/witness.yml [2024-08-15 18:29:43,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-15 18:29:43,096 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-15 18:29:43,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-15 18:29:43,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-15 18:29:43,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-15 18:29:43,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:29:42" (1/2) ... [2024-08-15 18:29:43,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42fd8df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:43, skipping insertion in model container [2024-08-15 18:29:43,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:29:42" (1/2) ... [2024-08-15 18:29:43,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@291d70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:43, skipping insertion in model container [2024-08-15 18:29:43,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:29:43" (2/2) ... [2024-08-15 18:29:43,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42fd8df8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43, skipping insertion in model container [2024-08-15 18:29:43,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:29:43" (2/2) ... [2024-08-15 18:29:43,122 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-15 18:29:43,260 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_5-2.c[740,753] [2024-08-15 18:29:43,264 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:29:43,272 INFO L200 MainTranslator]: Completed pre-run [2024-08-15 18:29:43,282 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_5-2.c[740,753] [2024-08-15 18:29:43,283 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:29:43,297 INFO L204 MainTranslator]: Completed translation [2024-08-15 18:29:43,297 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43 WrapperNode [2024-08-15 18:29:43,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-15 18:29:43,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-15 18:29:43,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-15 18:29:43,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-15 18:29:43,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43" (1/1) ... [2024-08-15 18:29:43,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43" (1/1) ... [2024-08-15 18:29:43,320 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43" (1/1) ... [2024-08-15 18:29:43,354 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-08-15 18:29:43,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43" (1/1) ... [2024-08-15 18:29:43,356 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43" (1/1) ... [2024-08-15 18:29:43,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43" (1/1) ... [2024-08-15 18:29:43,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43" (1/1) ... [2024-08-15 18:29:43,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43" (1/1) ... [2024-08-15 18:29:43,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-15 18:29:43,364 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-15 18:29:43,364 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-15 18:29:43,364 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-15 18:29:43,365 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43" (1/1) ... [2024-08-15 18:29:43,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-15 18:29:43,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:29:43,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-08-15 18:29:43,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-08-15 18:29:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-15 18:29:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-15 18:29:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-15 18:29:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-08-15 18:29:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-15 18:29:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-15 18:29:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-15 18:29:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-15 18:29:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-15 18:29:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-15 18:29:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-08-15 18:29:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-15 18:29:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-15 18:29:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-15 18:29:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-15 18:29:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-15 18:29:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-15 18:29:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-15 18:29:43,513 INFO L273 CfgBuilder]: Building ICFG [2024-08-15 18:29:43,515 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-15 18:29:43,625 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L13: havoc #t~ret4;havoc #t~ret5; [2024-08-15 18:29:43,661 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-08-15 18:29:43,661 INFO L327 CfgBuilder]: Performing block encoding [2024-08-15 18:29:43,669 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-15 18:29:43,669 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-15 18:29:43,670 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:29:43 BoogieIcfgContainer [2024-08-15 18:29:43,670 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-15 18:29:43,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-15 18:29:43,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-15 18:29:43,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-15 18:29:43,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.08 06:29:42" (1/4) ... [2024-08-15 18:29:43,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4269cdbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.08 06:29:43, skipping insertion in model container [2024-08-15 18:29:43,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:29:43" (2/4) ... [2024-08-15 18:29:43,677 WARN L100 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-15 18:29:43,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4269cdbb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:29:43, skipping insertion in model container [2024-08-15 18:29:43,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:43" (3/4) ... [2024-08-15 18:29:43,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4269cdbb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:29:43, skipping insertion in model container [2024-08-15 18:29:43,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:29:43" (4/4) ... [2024-08-15 18:29:43,680 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2024-08-15 18:29:43,695 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-15 18:29:43,695 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-15 18:29:43,716 INFO L90 WitnessUtils]: Constructing product of automaton with 26 states and violation witness of the following lengths: [59] [2024-08-15 18:29:43,874 INFO L95 WitnessUtils]: Product has 695 reachable states. [2024-08-15 18:29:43,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-15 18:29:43,897 INFO L357 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, mHoare=false, 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;@24270bd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-15 18:29:43,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-15 18:29:43,900 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1847 transitions. [2024-08-15 18:29:43,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-08-15 18:29:43,950 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:29:43,951 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 16, 11, 11, 11, 11, 11, 11, 11, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:29:43,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:29:43,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:29:43,959 INFO L85 PathProgramCache]: Analyzing trace with hash 736245017, now seen corresponding path program 1 times [2024-08-15 18:29:43,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:29:43,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848607796] [2024-08-15 18:29:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:29:43,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:29:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:29:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-08-15 18:29:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-08-15 18:29:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-08-15 18:29:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-15 18:29:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-08-15 18:29:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-08-15 18:29:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-15 18:29:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-08-15 18:29:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-08-15 18:29:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-08-15 18:29:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-15 18:29:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-08-15 18:29:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 128 proven. 204 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2024-08-15 18:29:45,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:29:45,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848607796] [2024-08-15 18:29:45,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848607796] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-15 18:29:45,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069796204] [2024-08-15 18:29:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:29:45,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:29:45,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:29:45,308 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-15 18:29:45,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-08-15 18:29:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2024-08-15 18:29:45,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-15 18:29:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 51 proven. 238 refuted. 0 times theorem prover too weak. 1063 trivial. 0 not checked. [2024-08-15 18:29:45,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-15 18:29:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 51 proven. 243 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-08-15 18:29:46,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069796204] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-15 18:29:46,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-15 18:29:46,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 18 [2024-08-15 18:29:46,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856860992] [2024-08-15 18:29:46,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-15 18:29:46,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-08-15 18:29:46,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:29:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-08-15 18:29:46,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-08-15 18:29:46,223 INFO L87 Difference]: Start difference. First operand 695 states and 1847 transitions. Second operand has 18 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 18 states have internal predecessors, (47), 12 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2024-08-15 18:29:46,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:29:46,384 INFO L93 Difference]: Finished difference Result 504 states and 808 transitions. [2024-08-15 18:29:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-08-15 18:29:46,390 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 18 states have internal predecessors, (47), 12 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) Word has length 162 [2024-08-15 18:29:46,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:29:46,419 INFO L225 Difference]: With dead ends: 504 [2024-08-15 18:29:46,422 INFO L226 Difference]: Without dead ends: 333 [2024-08-15 18:29:46,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 365 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2024-08-15 18:29:46,428 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-08-15 18:29:46,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 208 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-08-15 18:29:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-08-15 18:29:46,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 254. [2024-08-15 18:29:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 174 states have (on average 1.132183908045977) internal successors, (197), 176 states have internal predecessors, (197), 33 states have call successors, (33), 32 states have call predecessors, (33), 46 states have return successors, (163), 45 states have call predecessors, (163), 32 states have call successors, (163) [2024-08-15 18:29:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 393 transitions. [2024-08-15 18:29:46,540 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 393 transitions. Word has length 162 [2024-08-15 18:29:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:29:46,541 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 393 transitions. [2024-08-15 18:29:46,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 18 states have internal predecessors, (47), 12 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2024-08-15 18:29:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 393 transitions. [2024-08-15 18:29:46,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-08-15 18:29:46,544 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:29:46,545 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:29:46,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-08-15 18:29:46,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-08-15 18:29:46,752 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:29:46,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:29:46,754 INFO L85 PathProgramCache]: Analyzing trace with hash 37683497, now seen corresponding path program 2 times [2024-08-15 18:29:46,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:29:46,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961657814] [2024-08-15 18:29:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:29:46,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:29:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:29:46,784 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-15 18:29:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:29:46,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-15 18:29:46,824 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-15 18:29:46,825 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-15 18:29:46,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-08-15 18:29:46,830 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2024-08-15 18:29:46,833 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2024-08-15 18:29:46,869 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.08 06:29:46 BoogieIcfgContainer [2024-08-15 18:29:46,871 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-15 18:29:46,872 INFO L158 Benchmark]: Toolchain (without parser) took 3776.23ms. Allocated memory was 155.2MB in the beginning and 237.0MB in the end (delta: 81.8MB). Free memory was 79.6MB in the beginning and 106.6MB in the end (delta: -26.9MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2024-08-15 18:29:46,873 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory was 125.3MB in the beginning and 125.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:29:46,873 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:29:46,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.40ms. Allocated memory was 155.2MB in the beginning and 237.0MB in the end (delta: 81.8MB). Free memory was 79.3MB in the beginning and 201.1MB in the end (delta: -121.9MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2024-08-15 18:29:46,874 INFO L158 Benchmark]: Boogie Preprocessor took 64.42ms. Allocated memory is still 237.0MB. Free memory was 201.1MB in the beginning and 204.9MB in the end (delta: -3.8MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2024-08-15 18:29:46,875 INFO L158 Benchmark]: IcfgBuilder took 306.69ms. Allocated memory is still 237.0MB. Free memory was 204.9MB in the beginning and 193.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-08-15 18:29:46,875 INFO L158 Benchmark]: TraceAbstraction took 3199.24ms. Allocated memory is still 237.0MB. Free memory was 192.3MB in the beginning and 106.6MB in the end (delta: 85.8MB). Peak memory consumption was 86.8MB. Max. memory is 16.1GB. [2024-08-15 18:29:46,877 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory was 125.3MB in the beginning and 125.1MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.40ms. Allocated memory was 155.2MB in the beginning and 237.0MB in the end (delta: 81.8MB). Free memory was 79.3MB in the beginning and 201.1MB in the end (delta: -121.9MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.42ms. Allocated memory is still 237.0MB. Free memory was 201.1MB in the beginning and 204.9MB in the end (delta: -3.8MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * IcfgBuilder took 306.69ms. Allocated memory is still 237.0MB. Free memory was 204.9MB in the beginning and 193.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3199.24ms. Allocated memory is still 237.0MB. Free memory was 192.3MB in the beginning and 106.6MB in the end (delta: 85.8MB). Peak memory consumption was 86.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] int x = 5; VAL [x=5] [L27] CALL, EXPR fibo(x) VAL [\old(n)=5] [L8] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L10] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=4] [L8] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L10] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=3] [L8] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L10] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1] [L13] RET, EXPR fibo(n-1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 [L9] return 0; VAL [\old(n)=0, \result=0] [L13] RET, EXPR fibo(n-2) VAL [\old(n)=2, n=2] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1] [L13] RET, EXPR fibo(n-2) VAL [\old(n)=3, n=3] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) VAL [\old(n)=4, n=4] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1] [L13] RET, EXPR fibo(n-1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 [L9] return 0; VAL [\old(n)=0, \result=0] [L13] RET, EXPR fibo(n-2) VAL [\old(n)=2, n=2] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) VAL [\old(n)=4, n=4] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) VAL [\old(n)=5, n=5] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=3] [L8] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L10] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1] [L13] RET, EXPR fibo(n-1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 [L9] return 0; VAL [\old(n)=0, \result=0] [L13] RET, EXPR fibo(n-2) VAL [\old(n)=2, n=2] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1] [L13] RET, EXPR fibo(n-2) VAL [\old(n)=3, n=3] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) VAL [\old(n)=5, n=5] [L13] return fibo(n-1) + fibo(n-2); [L27] RET, EXPR fibo(x) VAL [x=5] [L27] int result = fibo(x); [L28] COND TRUE result == 5 VAL [x=5] [L29] reach_error() VAL [x=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 2, TraceHistogramMax: 23, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 208 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 187 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 131 IncrementalHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 21 mSDtfsCounter, 131 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 389 GetRequests, 365 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=695occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 79 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 483 ConstructedInterpolants, 0 QuantifiedInterpolants, 639 SizeOfPredicates, 2 NumberOfNonLiveVariables, 379 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 3 InterpolantComputations, 0 PerfectInterpolantSequences, 3371/4056 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-08-15 18:29:46,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE