./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/fibo_2calls_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 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-simple/fibo_2calls_5-2.c ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/fibo_2calls_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-2699826-m [2024-08-14 14:34:06,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-14 14:34:06,417 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-14 14:34:06,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-14 14:34:06,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-14 14:34:06,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-14 14:34:06,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-14 14:34:06,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-14 14:34:06,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-14 14:34:06,453 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-14 14:34:06,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-14 14:34:06,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-14 14:34:06,454 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-14 14:34:06,456 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-14 14:34:06,456 INFO L153 SettingsManager]: * Use SBE=true [2024-08-14 14:34:06,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-14 14:34:06,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-14 14:34:06,457 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-14 14:34:06,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-14 14:34:06,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-14 14:34:06,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-14 14:34:06,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-14 14:34:06,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-14 14:34:06,462 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-14 14:34:06,463 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-14 14:34:06,463 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-14 14:34:06,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-14 14:34:06,463 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-14 14:34:06,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-14 14:34:06,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-14 14:34:06,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-14 14:34:06,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-14 14:34:06,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-14 14:34:06,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-14 14:34:06,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-14 14:34:06,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-14 14:34:06,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-14 14:34:06,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-14 14:34:06,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-14 14:34:06,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-14 14:34:06,466 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-14 14:34:06,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-14 14:34:06,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-14 14:34:06,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-14 14:34:06,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-14 14:34:06,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-14 14:34:06,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-14 14:34:06,759 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-14 14:34:06,760 INFO L274 PluginConnector]: CDTParser initialized [2024-08-14 14:34:06,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2024-08-14 14:34:08,167 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-14 14:34:08,342 INFO L384 CDTParser]: Found 1 translation units. [2024-08-14 14:34:08,343 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2024-08-14 14:34:08,351 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64142a86c/ccb9c5f4f8554cd4a5b966402537be48/FLAG1787788df [2024-08-14 14:34:08,751 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64142a86c/ccb9c5f4f8554cd4a5b966402537be48 [2024-08-14 14:34:08,753 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-14 14:34:08,754 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-14 14:34:08,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/fibo_2calls_5-2.yml/witness.yml [2024-08-14 14:34:08,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-14 14:34:08,874 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-14 14:34:08,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-14 14:34:08,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-14 14:34:08,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-14 14:34:08,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:34:08" (1/2) ... [2024-08-14 14:34:08,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e08d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:08, skipping insertion in model container [2024-08-14 14:34:08,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:34:08" (1/2) ... [2024-08-14 14:34:08,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a215c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:08, skipping insertion in model container [2024-08-14 14:34:08,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:34:08" (2/2) ... [2024-08-14 14:34:08,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e08d19 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:08, skipping insertion in model container [2024-08-14 14:34:08,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:34:08" (2/2) ... [2024-08-14 14:34:08,898 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-14 14:34:09,058 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_2calls_5-2.c[946,959] [2024-08-14 14:34:09,067 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:34:09,086 INFO L200 MainTranslator]: Completed pre-run [2024-08-14 14:34:09,105 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_2calls_5-2.c[946,959] [2024-08-14 14:34:09,107 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:34:09,125 INFO L204 MainTranslator]: Completed translation [2024-08-14 14:34:09,126 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:09 WrapperNode [2024-08-14 14:34:09,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-14 14:34:09,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-14 14:34:09,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-14 14:34:09,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-14 14:34:09,138 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:09" (1/1) ... [2024-08-14 14:34:09,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:09" (1/1) ... [2024-08-14 14:34:09,143 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:09" (1/1) ... [2024-08-14 14:34:09,161 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 14:34:09,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:09" (1/1) ... [2024-08-14 14:34:09,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:09" (1/1) ... [2024-08-14 14:34:09,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:09" (1/1) ... [2024-08-14 14:34:09,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:09" (1/1) ... [2024-08-14 14:34:09,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:09" (1/1) ... [2024-08-14 14:34:09,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-14 14:34:09,169 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-14 14:34:09,169 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-14 14:34:09,169 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-14 14:34:09,170 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:09" (1/1) ... [2024-08-14 14:34:09,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-14 14:34:09,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-14 14:34:09,204 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 14:34:09,206 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 14:34:09,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-14 14:34:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-14 14:34:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-14 14:34:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-08-14 14:34:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-08-14 14:34:09,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-14 14:34:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-14 14:34:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-14 14:34:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-14 14:34:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-14 14:34:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-14 14:34:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-08-14 14:34:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-08-14 14:34:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-14 14:34:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-14 14:34:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-14 14:34:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-14 14:34:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-14 14:34:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-14 14:34:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-14 14:34:09,325 INFO L273 CfgBuilder]: Building ICFG [2024-08-14 14:34:09,327 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-14 14:34:09,414 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2024-08-14 14:34:09,432 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2024-08-14 14:34:09,475 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-08-14 14:34:09,476 INFO L327 CfgBuilder]: Performing block encoding [2024-08-14 14:34:09,483 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-14 14:34:09,483 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-14 14:34:09,484 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:34:09 BoogieIcfgContainer [2024-08-14 14:34:09,484 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-14 14:34:09,487 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-14 14:34:09,487 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-14 14:34:09,490 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-14 14:34:09,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.08 02:34:08" (1/4) ... [2024-08-14 14:34:09,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401a07cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 02:34:09, skipping insertion in model container [2024-08-14 14:34:09,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:34:08" (2/4) ... [2024-08-14 14:34:09,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401a07cb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 14.08 02:34:09, skipping insertion in model container [2024-08-14 14:34:09,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:09" (3/4) ... [2024-08-14 14:34:09,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401a07cb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 14.08 02:34:09, skipping insertion in model container [2024-08-14 14:34:09,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:34:09" (4/4) ... [2024-08-14 14:34:09,495 INFO L119 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2024-08-14 14:34:09,496 WARN L130 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-14 14:34:09,513 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-14 14:34:09,513 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-14 14:34:09,537 INFO L92 WitnessUtils]: Constructing product of automaton with 35 states and violation witness of the following lengths: [59] [2024-08-14 14:34:09,539 INFO L82 GeneralOperation]: Start removeDeadEnds. Operand has 35 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-08-14 14:34:09,925 INFO L88 GeneralOperation]: Finished removeDeadEnds. Reduced from 1057 states to 684 states. [2024-08-14 14:34:09,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-14 14:34:09,953 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;@1e74fecf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 14:34:09,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-14 14:34:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states. [2024-08-14 14:34:10,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-08-14 14:34:10,065 INFO L187 NwaCegarLoop]: Found error trace [2024-08-14 14:34:10,066 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-14 14:34:10,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-14 14:34:10,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 14:34:10,073 INFO L85 PathProgramCache]: Analyzing trace with hash 487015710, now seen corresponding path program 1 times [2024-08-14 14:34:10,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 14:34:10,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763935044] [2024-08-14 14:34:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:34:10,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 14:34:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-14 14:34:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-08-14 14:34:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-14 14:34:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-08-14 14:34:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-08-14 14:34:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-14 14:34:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-08-14 14:34:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-08-14 14:34:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-08-14 14:34:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-08-14 14:34:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-08-14 14:34:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-14 14:34:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-14 14:34:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-08-14 14:34:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 102 proven. 47 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2024-08-14 14:34:11,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 14:34:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763935044] [2024-08-14 14:34:11,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763935044] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-14 14:34:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939551061] [2024-08-14 14:34:11,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:34:11,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 14:34:11,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-14 14:34:11,444 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 14:34:11,446 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 14:34:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:34:11,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 14 conjunts are in the unsatisfiable core [2024-08-14 14:34:11,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-14 14:34:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 91 proven. 186 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2024-08-14 14:34:11,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-14 14:34:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 91 proven. 200 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-08-14 14:34:13,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939551061] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-14 14:34:13,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-14 14:34:13,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 15] total 21 [2024-08-14 14:34:13,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386835835] [2024-08-14 14:34:13,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-14 14:34:13,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-08-14 14:34:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 14:34:13,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-08-14 14:34:13,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-08-14 14:34:13,676 INFO L87 Difference]: Start difference. First operand 684 states. Second operand has 21 states, 19 states have (on average 4.0) internal successors, (76), 21 states have internal predecessors, (76), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (30), 8 states have call predecessors, (30), 17 states have call successors, (30) [2024-08-14 14:34:14,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-14 14:34:14,228 INFO L93 Difference]: Finished difference Result 1608 states and 8855 transitions. [2024-08-14 14:34:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-08-14 14:34:14,231 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.0) internal successors, (76), 21 states have internal predecessors, (76), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (30), 8 states have call predecessors, (30), 17 states have call successors, (30) Word has length 162 [2024-08-14 14:34:14,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-14 14:34:14,235 INFO L225 Difference]: With dead ends: 1608 [2024-08-14 14:34:14,235 INFO L226 Difference]: Without dead ends: 230 [2024-08-14 14:34:14,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 356 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2024-08-14 14:34:14,243 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 25 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-08-14 14:34:14,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 460 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-08-14 14:34:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-08-14 14:34:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 217. [2024-08-14 14:34:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 144 states have (on average 1.0972222222222223) internal successors, (158), 151 states have internal predecessors, (158), 39 states have call successors, (39), 27 states have call predecessors, (39), 33 states have return successors, (50), 38 states have call predecessors, (50), 38 states have call successors, (50) [2024-08-14 14:34:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 247 transitions. [2024-08-14 14:34:14,334 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 247 transitions. Word has length 162 [2024-08-14 14:34:14,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-14 14:34:14,335 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 247 transitions. [2024-08-14 14:34:14,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.0) internal successors, (76), 21 states have internal predecessors, (76), 17 states have call successors, (24), 1 states have call predecessors, (24), 9 states have return successors, (30), 8 states have call predecessors, (30), 17 states have call successors, (30) [2024-08-14 14:34:14,338 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 247 transitions. [2024-08-14 14:34:14,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-08-14 14:34:14,342 INFO L187 NwaCegarLoop]: Found error trace [2024-08-14 14:34:14,342 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-14 14:34:14,362 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 14:34:14,543 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 14:34:14,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-14 14:34:14,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 14:34:14,544 INFO L85 PathProgramCache]: Analyzing trace with hash -223789178, now seen corresponding path program 2 times [2024-08-14 14:34:14,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 14:34:14,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17609582] [2024-08-14 14:34:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:34:14,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 14:34:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 14:34:14,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 14:34:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 14:34:14,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 14:34:14,606 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 14:34:14,608 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-14 14:34:14,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-08-14 14:34:14,612 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2024-08-14 14:34:14,616 INFO L196 ceAbstractionStarter]: Computing trace abstraction results [2024-08-14 14:34:14,653 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.08 02:34:14 BoogieIcfgContainer [2024-08-14 14:34:14,653 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-14 14:34:14,654 INFO L158 Benchmark]: Toolchain (without parser) took 5780.26ms. Allocated memory was 165.7MB in the beginning and 216.0MB in the end (delta: 50.3MB). Free memory was 127.8MB in the beginning and 89.0MB in the end (delta: 38.8MB). Peak memory consumption was 90.2MB. Max. memory is 16.1GB. [2024-08-14 14:34:14,655 INFO L158 Benchmark]: CDTParser took 1.16ms. Allocated memory is still 117.4MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:34:14,656 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 165.7MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:34:14,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.73ms. Allocated memory is still 165.7MB. Free memory was 127.8MB in the beginning and 116.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-08-14 14:34:14,657 INFO L158 Benchmark]: Boogie Preprocessor took 40.94ms. Allocated memory is still 165.7MB. Free memory was 116.2MB in the beginning and 114.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-08-14 14:34:14,657 INFO L158 Benchmark]: IcfgBuilder took 315.43ms. Allocated memory is still 165.7MB. Free memory was 114.1MB in the beginning and 101.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-08-14 14:34:14,657 INFO L158 Benchmark]: TraceAbstraction took 5166.47ms. Allocated memory was 165.7MB in the beginning and 216.0MB in the end (delta: 50.3MB). Free memory was 100.5MB in the beginning and 89.0MB in the end (delta: 11.5MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2024-08-14 14:34:14,661 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16ms. Allocated memory is still 117.4MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 165.7MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.73ms. Allocated memory is still 165.7MB. Free memory was 127.8MB in the beginning and 116.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.94ms. Allocated memory is still 165.7MB. Free memory was 116.2MB in the beginning and 114.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 315.43ms. Allocated memory is still 165.7MB. Free memory was 114.1MB in the beginning and 101.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5166.47ms. Allocated memory was 165.7MB in the beginning and 216.0MB in the end (delta: 50.3MB). Free memory was 100.5MB in the beginning and 89.0MB in the end (delta: 11.5MB). Peak memory consumption was 62.9MB. 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: 41]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L38] int x = 5; VAL [x=5] [L39] CALL, EXPR fibo1(x) VAL [\old(n)=5] [L10] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L12] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=5, n=5] [L15] return fibo2(n-1) + fibo2(n-2); [L39] RET, EXPR fibo1(x) VAL [x=5] [L39] int result = fibo1(x); [L40] COND TRUE result == 5 VAL [x=5] [L41] reach_error() VAL [x=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 2, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 460 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 412 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 426 IncrementalHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 48 mSDtfsCounter, 426 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 389 GetRequests, 356 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=684occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 483 ConstructedInterpolants, 0 QuantifiedInterpolants, 755 SizeOfPredicates, 6 NumberOfNonLiveVariables, 379 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 3 InterpolantComputations, 0 PerfectInterpolantSequences, 1487/1920 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 14:34:14,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, 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