./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/recursive/Fibonacci04.c --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/Fibonacci04.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 26998269 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/Fibonacci04.c ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/Fibonacci04.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-2699826-m [2024-08-14 14:33:59,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-14 14:33:59,697 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-14 14:33:59,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-14 14:33:59,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-14 14:33:59,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-14 14:33:59,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-14 14:33:59,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-14 14:33:59,735 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-14 14:33:59,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-14 14:33:59,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-14 14:33:59,735 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-14 14:33:59,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-14 14:33:59,736 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-14 14:33:59,737 INFO L153 SettingsManager]: * Use SBE=true [2024-08-14 14:33:59,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-14 14:33:59,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-14 14:33:59,742 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-14 14:33:59,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-14 14:33:59,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-14 14:33:59,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-14 14:33:59,746 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-14 14:33:59,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-14 14:33:59,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-14 14:33:59,746 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-14 14:33:59,747 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-14 14:33:59,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-14 14:33:59,747 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-14 14:33:59,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-14 14:33:59,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-14 14:33:59,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-14 14:33:59,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-14 14:33:59,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-14 14:33:59,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-14 14:33:59,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-14 14:33:59,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-14 14:33:59,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-14 14:33:59,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-14 14:33:59,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-14 14:33:59,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-14 14:33:59,750 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-14 14:33:59,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-14 14:33:59,752 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-14 14:33:59,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-14 14:33:59,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-14 14:33:59,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-14 14:34:00,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-14 14:34:00,002 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-14 14:34:00,003 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-14 14:34:00,004 INFO L431 ainManager$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/Fibonacci04.yml/witness.yml [2024-08-14 14:34:00,137 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-14 14:34:00,137 INFO L274 PluginConnector]: CDTParser initialized [2024-08-14 14:34:00,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2024-08-14 14:34:01,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-14 14:34:01,752 INFO L384 CDTParser]: Found 1 translation units. [2024-08-14 14:34:01,753 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci04.c [2024-08-14 14:34:01,760 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbeff74e/33d71da4279e47e4b4eeaa0903b91e84/FLAG8800c5ad8 [2024-08-14 14:34:02,143 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbeff74e/33d71da4279e47e4b4eeaa0903b91e84 [2024-08-14 14:34:02,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-14 14:34:02,145 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-14 14:34:02,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-14 14:34:02,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-14 14:34:02,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-14 14:34:02,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:34:00" (1/2) ... [2024-08-14 14:34:02,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d684e67 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:02, skipping insertion in model container [2024-08-14 14:34:02,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:34:00" (1/2) ... [2024-08-14 14:34:02,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e5b0ae7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:02, skipping insertion in model container [2024-08-14 14:34:02,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:34:02" (2/2) ... [2024-08-14 14:34:02,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d684e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02, skipping insertion in model container [2024-08-14 14:34:02,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:34:02" (2/2) ... [2024-08-14 14:34:02,175 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-14 14:34:02,334 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/Fibonacci04.c[780,793] [2024-08-14 14:34:02,338 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:34:02,355 INFO L200 MainTranslator]: Completed pre-run [2024-08-14 14:34:02,367 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/Fibonacci04.c[780,793] [2024-08-14 14:34:02,368 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:34:02,384 INFO L204 MainTranslator]: Completed translation [2024-08-14 14:34:02,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02 WrapperNode [2024-08-14 14:34:02,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-14 14:34:02,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-14 14:34:02,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-14 14:34:02,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-14 14:34:02,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02" (1/1) ... [2024-08-14 14:34:02,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02" (1/1) ... [2024-08-14 14:34:02,401 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02" (1/1) ... [2024-08-14 14:34:02,414 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]. [2024-08-14 14:34:02,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02" (1/1) ... [2024-08-14 14:34:02,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02" (1/1) ... [2024-08-14 14:34:02,419 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02" (1/1) ... [2024-08-14 14:34:02,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02" (1/1) ... [2024-08-14 14:34:02,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02" (1/1) ... [2024-08-14 14:34:02,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-14 14:34:02,423 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-14 14:34:02,424 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-14 14:34:02,424 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-14 14:34:02,425 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02" (1/1) ... [2024-08-14 14:34:02,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-14 14:34:02,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-14 14:34:02,467 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) [2024-08-14 14:34:02,475 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 [2024-08-14 14:34:02,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-14 14:34:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-14 14:34:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-14 14:34:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-08-14 14:34:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-14 14:34:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-14 14:34:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-14 14:34:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-14 14:34:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-14 14:34:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-14 14:34:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-08-14 14:34:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-14 14:34:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-14 14:34:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-14 14:34:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-14 14:34:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-14 14:34:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-14 14:34:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-14 14:34:02,603 INFO L273 CfgBuilder]: Building ICFG [2024-08-14 14:34:02,605 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-14 14:34:02,697 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L24: havoc #t~ret4;havoc #t~ret5; [2024-08-14 14:34:02,781 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-08-14 14:34:02,782 INFO L327 CfgBuilder]: Performing block encoding [2024-08-14 14:34:02,795 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-14 14:34:02,796 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-14 14:34:02,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:34:02 BoogieIcfgContainer [2024-08-14 14:34:02,797 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-14 14:34:02,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-14 14:34:02,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-14 14:34:02,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-14 14:34:02,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:34:00" (1/4) ... [2024-08-14 14:34:02,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521281ad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 14.08 02:34:02, skipping insertion in model container [2024-08-14 14:34:02,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.08 02:34:02" (2/4) ... [2024-08-14 14:34:02,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521281ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 02:34:02, skipping insertion in model container [2024-08-14 14:34:02,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:02" (3/4) ... [2024-08-14 14:34:02,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521281ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 02:34:02, skipping insertion in model container [2024-08-14 14:34:02,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:34:02" (4/4) ... [2024-08-14 14:34:02,808 INFO L119 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2024-08-14 14:34:02,810 WARN L130 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-14 14:34:02,828 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-14 14:34:02,829 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-14 14:34:02,854 INFO L92 WitnessUtils]: Constructing product of automaton with 25 states and violation witness of the following lengths: [59] [2024-08-14 14:34:02,857 INFO L82 GeneralOperation]: Start removeDeadEnds. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-08-14 14:34:03,105 INFO L88 GeneralOperation]: Finished removeDeadEnds. Reduced from 657 states to 318 states. [2024-08-14 14:34:03,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-14 14:34:03,136 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;@4cdeb2bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 14:34:03,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-14 14:34:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2024-08-14 14:34:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-08-14 14:34:03,203 INFO L187 NwaCegarLoop]: Found error trace [2024-08-14 14:34:03,205 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 15, 10, 10, 10, 10, 10, 10, 10, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-14 14:34:03,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-14 14:34:03,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 14:34:03,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1793966204, now seen corresponding path program 1 times [2024-08-14 14:34:03,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 14:34:03,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077251878] [2024-08-14 14:34:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:34:03,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 14:34:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-14 14:34:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-08-14 14:34:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-14 14:34:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-08-14 14:34:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-08-14 14:34:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-08-14 14:34:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-14 14:34:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-08-14 14:34:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-08-14 14:34:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-08-14 14:34:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-14 14:34:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-08-14 14:34:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 187 proven. 193 refuted. 0 times theorem prover too weak. 745 trivial. 0 not checked. [2024-08-14 14:34:04,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 14:34:04,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077251878] [2024-08-14 14:34:04,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077251878] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-14 14:34:04,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889273902] [2024-08-14 14:34:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:34:04,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 14:34:04,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-14 14:34:04,831 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) [2024-08-14 14:34:04,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-08-14 14:34:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:04,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 14 conjunts are in the unsatisfiable core [2024-08-14 14:34:04,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-14 14:34:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 170 proven. 335 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2024-08-14 14:34:05,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-14 14:34:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 170 proven. 370 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2024-08-14 14:34:07,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889273902] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-14 14:34:07,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-14 14:34:07,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 15] total 21 [2024-08-14 14:34:07,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504807816] [2024-08-14 14:34:07,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-14 14:34:07,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-08-14 14:34:07,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 14:34:07,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-08-14 14:34:07,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2024-08-14 14:34:07,058 INFO L87 Difference]: Start difference. First operand 318 states. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 17 states have call successors, (24), 1 states have call predecessors, (24), 7 states have return successors, (29), 12 states have call predecessors, (29), 17 states have call successors, (29) [2024-08-14 14:34:07,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-14 14:34:07,412 INFO L93 Difference]: Finished difference Result 604 states and 1863 transitions. [2024-08-14 14:34:07,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-08-14 14:34:07,415 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 17 states have call successors, (24), 1 states have call predecessors, (24), 7 states have return successors, (29), 12 states have call predecessors, (29), 17 states have call successors, (29) Word has length 149 [2024-08-14 14:34:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-14 14:34:07,417 INFO L225 Difference]: With dead ends: 604 [2024-08-14 14:34:07,417 INFO L226 Difference]: Without dead ends: 111 [2024-08-14 14:34:07,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 326 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=330, Unknown=0, NotChecked=0, Total=506 [2024-08-14 14:34:07,424 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 20 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-08-14 14:34:07,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 169 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-08-14 14:34:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-08-14 14:34:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-08-14 14:34:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 77 states have (on average 1.0) internal successors, (77), 77 states have internal predecessors, (77), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-08-14 14:34:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 110 transitions. [2024-08-14 14:34:07,487 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 110 transitions. Word has length 149 [2024-08-14 14:34:07,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-14 14:34:07,488 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 110 transitions. [2024-08-14 14:34:07,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 17 states have call successors, (24), 1 states have call predecessors, (24), 7 states have return successors, (29), 12 states have call predecessors, (29), 17 states have call successors, (29) [2024-08-14 14:34:07,488 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 110 transitions. [2024-08-14 14:34:07,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-08-14 14:34:07,492 INFO L187 NwaCegarLoop]: Found error trace [2024-08-14 14:34:07,492 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] [2024-08-14 14:34:07,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-08-14 14:34:07,693 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 [2024-08-14 14:34:07,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-14 14:34:07,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 14:34:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1320073829, now seen corresponding path program 2 times [2024-08-14 14:34:07,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 14:34:07,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382234066] [2024-08-14 14:34:07,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:34:07,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 14:34:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 14:34:07,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 14:34:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 14:34:07,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 14:34:07,759 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 14:34:07,761 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-14 14:34:07,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-08-14 14:34:07,766 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2024-08-14 14:34:07,770 INFO L196 ceAbstractionStarter]: Computing trace abstraction results [2024-08-14 14:34:07,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.08 02:34:07 BoogieIcfgContainer [2024-08-14 14:34:07,808 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-14 14:34:07,809 INFO L158 Benchmark]: Toolchain (without parser) took 5663.39ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 106.3MB in the beginning and 94.7MB in the end (delta: 11.6MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2024-08-14 14:34:07,809 INFO L158 Benchmark]: Witness Parser took 0.26ms. Allocated memory is still 163.6MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:34:07,809 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:34:07,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.46ms. Allocated memory is still 163.6MB. Free memory was 106.3MB in the beginning and 95.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-08-14 14:34:07,812 INFO L158 Benchmark]: Boogie Preprocessor took 37.35ms. Allocated memory is still 163.6MB. Free memory was 95.1MB in the beginning and 93.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-08-14 14:34:07,812 INFO L158 Benchmark]: IcfgBuilder took 374.22ms. Allocated memory is still 163.6MB. Free memory was 93.1MB in the beginning and 81.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-08-14 14:34:07,813 INFO L158 Benchmark]: TraceAbstraction took 5007.95ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 80.6MB in the beginning and 94.7MB in the end (delta: -14.1MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2024-08-14 14:34:07,814 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.26ms. Allocated memory is still 163.6MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.46ms. Allocated memory is still 163.6MB. Free memory was 106.3MB in the beginning and 95.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.35ms. Allocated memory is still 163.6MB. Free memory was 95.1MB in the beginning and 93.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 374.22ms. Allocated memory is still 163.6MB. Free memory was 93.1MB in the beginning and 81.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5007.95ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 80.6MB in the beginning and 94.7MB in the end (delta: -14.1MB). Peak memory consumption was 27.8MB. 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: 35]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] int x = __VERIFIER_nondet_int(); [L31] CALL, EXPR fibonacci(x) VAL [\old(n)=5] [L19] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L21] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=4] [L19] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L21] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=3] [L19] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L21] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=2] [L19] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L21] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=1] [L19] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L21] COND TRUE n == 1 [L22] return 1; VAL [\old(n)=1, \result=1] [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=2, n=2] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=0] [L19] COND TRUE n < 1 [L20] return 0; VAL [\old(n)=0, \result=0] [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=2, n=2] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=3, n=3] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=1] [L19] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L21] COND TRUE n == 1 [L22] return 1; VAL [\old(n)=1, \result=1] [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=3, n=3] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=4, n=4] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=2] [L19] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L21] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=1] [L19] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L21] COND TRUE n == 1 [L22] return 1; VAL [\old(n)=1, \result=1] [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=2, n=2] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=0] [L19] COND TRUE n < 1 [L20] return 0; VAL [\old(n)=0, \result=0] [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=2, n=2] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=4, n=4] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=5, n=5] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=3] [L19] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L21] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=2] [L19] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L21] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L24] CALL, EXPR fibonacci(n-1) VAL [\old(n)=1] [L19] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L21] COND TRUE n == 1 [L22] return 1; VAL [\old(n)=1, \result=1] [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=2, n=2] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=0] [L19] COND TRUE n < 1 [L20] return 0; VAL [\old(n)=0, \result=0] [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=2, n=2] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) VAL [\old(n)=3, n=3] [L24] CALL, EXPR fibonacci(n-2) VAL [\old(n)=1] [L19] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L21] COND TRUE n == 1 [L22] return 1; VAL [\old(n)=1, \result=1] [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=3, n=3] [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-2) VAL [\old(n)=5, n=5] [L24] return fibonacci(n-1) + fibonacci(n-2); [L31] RET, EXPR fibonacci(x) VAL [x=5] [L31] int result = fibonacci(x); [L32] COND FALSE !(x != 5 || result == 3) [L35] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 2, TraceHistogramMax: 21, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 169 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 132 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 234 IncrementalHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 37 mSDtfsCounter, 234 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 326 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=318occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 408 NumberOfCodeBlocks, 408 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 444 ConstructedInterpolants, 0 QuantifiedInterpolants, 808 SizeOfPredicates, 6 NumberOfNonLiveVariables, 351 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 3 InterpolantComputations, 0 PerfectInterpolantSequences, 2477/3375 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! [2024-08-14 14:34:07,847 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