./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 03fe66fa Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/recursive-simple/fibo_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-03fe66f-m [2024-08-15 18:29:39,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-15 18:29:39,753 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-15 18:29:39,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-15 18:29:39,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-15 18:29:39,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-15 18:29:39,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-15 18:29:39,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-15 18:29:39,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-15 18:29:39,797 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-15 18:29:39,798 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-15 18:29:39,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-15 18:29:39,799 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-15 18:29:39,799 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-15 18:29:39,799 INFO L153 SettingsManager]: * Use SBE=true [2024-08-15 18:29:39,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-15 18:29:39,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-15 18:29:39,805 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-15 18:29:39,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-15 18:29:39,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-15 18:29:39,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-15 18:29:39,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-15 18:29:39,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-15 18:29:39,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-15 18:29:39,808 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-15 18:29:39,808 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-15 18:29:39,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-15 18:29:39,809 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-15 18:29:39,810 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-15 18:29:39,810 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-15 18:29:39,811 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-15 18:29:39,811 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-15 18:29:39,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-15 18:29:39,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-15 18:29:39,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-15 18:29:39,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-15 18:29:39,813 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-15 18:29:39,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-15 18:29:39,813 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-15 18:29:39,813 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-15 18:29:39,814 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-15 18:29:39,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-15 18:29:39,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-15 18:29:39,818 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-15 18:29:40,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-15 18:29:40,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-15 18:29:40,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-15 18:29:40,205 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-15 18:29:40,206 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-15 18:29:40,207 INFO L431 ainManager$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 [2024-08-15 18:29:40,333 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-15 18:29:40,334 INFO L274 PluginConnector]: CDTParser initialized [2024-08-15 18:29:40,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2024-08-15 18:29:41,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-15 18:29:42,060 INFO L384 CDTParser]: Found 1 translation units. [2024-08-15 18:29:42,060 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2024-08-15 18:29:42,067 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c193c1f7c/49d9985d77c14df3b5cb5bf87910f045/FLAGa5ff85ea7 [2024-08-15 18:29:42,083 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c193c1f7c/49d9985d77c14df3b5cb5bf87910f045 [2024-08-15 18:29:42,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-15 18:29:42,087 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-15 18:29:42,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-15 18:29:42,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-15 18:29:42,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-15 18:29:42,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:29:40" (1/2) ... [2024-08-15 18:29:42,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189ccad8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:42, skipping insertion in model container [2024-08-15 18:29:42,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:29:40" (1/2) ... [2024-08-15 18:29:42,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1edd655 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:29:42, skipping insertion in model container [2024-08-15 18:29:42,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:29:42" (2/2) ... [2024-08-15 18:29:42,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189ccad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42, skipping insertion in model container [2024-08-15 18:29:42,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:29:42" (2/2) ... [2024-08-15 18:29:42,118 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-15 18:29:42,371 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] [2024-08-15 18:29:42,379 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:29:42,397 INFO L200 MainTranslator]: Completed pre-run [2024-08-15 18:29:42,415 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] [2024-08-15 18:29:42,416 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:29:42,435 INFO L204 MainTranslator]: Completed translation [2024-08-15 18:29:42,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42 WrapperNode [2024-08-15 18:29:42,438 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-15 18:29:42,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-15 18:29:42,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-15 18:29:42,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-15 18:29:42,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42" (1/1) ... [2024-08-15 18:29:42,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42" (1/1) ... [2024-08-15 18:29:42,462 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42" (1/1) ... [2024-08-15 18:29:42,476 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-08-15 18:29:42,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42" (1/1) ... [2024-08-15 18:29:42,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42" (1/1) ... [2024-08-15 18:29:42,480 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42" (1/1) ... [2024-08-15 18:29:42,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42" (1/1) ... [2024-08-15 18:29:42,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42" (1/1) ... [2024-08-15 18:29:42,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-15 18:29:42,487 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-15 18:29:42,487 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-15 18:29:42,487 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-15 18:29:42,488 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42" (1/1) ... [2024-08-15 18:29:42,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-15 18:29:42,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:29:42,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-08-15 18:29:42,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-08-15 18:29:42,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-15 18:29:42,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-15 18:29:42,583 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-15 18:29:42,583 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-08-15 18:29:42,583 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-08-15 18:29:42,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-15 18:29:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-15 18:29:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-15 18:29:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-15 18:29:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-15 18:29:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-15 18:29:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-08-15 18:29:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-08-15 18:29:42,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-15 18:29:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-15 18:29:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-15 18:29:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-15 18:29:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-15 18:29:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-15 18:29:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-15 18:29:42,677 INFO L273 CfgBuilder]: Building ICFG [2024-08-15 18:29:42,679 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-15 18:29:42,780 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2024-08-15 18:29:42,803 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2024-08-15 18:29:42,844 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-08-15 18:29:42,845 INFO L327 CfgBuilder]: Performing block encoding [2024-08-15 18:29:42,854 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-15 18:29:42,854 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-15 18:29:42,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:29:42 BoogieIcfgContainer [2024-08-15 18:29:42,855 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-15 18:29:42,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-15 18:29:42,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-15 18:29:42,862 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-15 18:29:42,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:29:40" (1/4) ... [2024-08-15 18:29:42,863 WARN L100 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-15 18:29:42,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ff0d7d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:29:42, skipping insertion in model container [2024-08-15 18:29:42,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.08 06:29:42" (2/4) ... [2024-08-15 18:29:42,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ff0d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.08 06:29:42, skipping insertion in model container [2024-08-15 18:29:42,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:29:42" (3/4) ... [2024-08-15 18:29:42,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ff0d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.08 06:29:42, skipping insertion in model container [2024-08-15 18:29:42,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:29:42" (4/4) ... [2024-08-15 18:29:42,869 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2024-08-15 18:29:42,890 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-15 18:29:42,891 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-15 18:29:42,919 INFO L90 WitnessUtils]: Constructing product of automaton with 35 states and violation witness of the following lengths: [59] [2024-08-15 18:29:43,328 INFO L95 WitnessUtils]: Product has 1057 reachable states. [2024-08-15 18:29:43,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-15 18:29:43,362 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;@39b12b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-15 18:29:43,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-15 18:29:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 3537 transitions. [2024-08-15 18:29:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-08-15 18:29:43,555 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:29:43,557 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] [2024-08-15 18:29:43,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:29:43,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:29:43,563 INFO L85 PathProgramCache]: Analyzing trace with hash 487015710, now seen corresponding path program 1 times [2024-08-15 18:29:43,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:29:43,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412242044] [2024-08-15 18:29:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:29:43,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:29:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:29:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-08-15 18:29:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-15 18:29:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-08-15 18:29:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-08-15 18:29:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-15 18:29:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-08-15 18:29:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-08-15 18:29:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-08-15 18:29:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-08-15 18:29:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-08-15 18:29:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-08-15 18:29:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-08-15 18:29:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-08-15 18:29:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 102 proven. 47 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2024-08-15 18:29:45,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:29:45,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412242044] [2024-08-15 18:29:45,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412242044] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-15 18:29:45,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039434479] [2024-08-15 18:29:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:29:45,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:29:45,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:29:45,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-15 18:29:45,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-08-15 18:29:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:29:45,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 14 conjunts are in the unsatisfiable core [2024-08-15 18:29:45,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-15 18:29:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 91 proven. 186 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2024-08-15 18:29:45,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-15 18:29:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 91 proven. 200 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-08-15 18:29:47,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039434479] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-15 18:29:47,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-15 18:29:47,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 15] total 21 [2024-08-15 18:29:47,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046989437] [2024-08-15 18:29:47,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-15 18:29:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-08-15 18:29:47,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:29:47,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-08-15 18:29:47,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-08-15 18:29:47,554 INFO L87 Difference]: Start difference. First operand 1057 states and 3537 transitions. 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) [2024-08-15 18:29:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:29:48,193 INFO L93 Difference]: Finished difference Result 1911 states and 9285 transitions. [2024-08-15 18:29:48,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-08-15 18:29:48,197 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 [2024-08-15 18:29:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:29:48,217 INFO L225 Difference]: With dead ends: 1911 [2024-08-15 18:29:48,217 INFO L226 Difference]: Without dead ends: 230 [2024-08-15 18:29:48,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 356 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2024-08-15 18:29:48,228 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 28 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-08-15 18:29:48,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 522 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-08-15 18:29:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-08-15 18:29:48,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 217. [2024-08-15 18:29:48,360 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) [2024-08-15 18:29:48,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 247 transitions. [2024-08-15 18:29:48,366 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 247 transitions. Word has length 162 [2024-08-15 18:29:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:29:48,369 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 247 transitions. [2024-08-15 18:29:48,370 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) [2024-08-15 18:29:48,370 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 247 transitions. [2024-08-15 18:29:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-08-15 18:29:48,375 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:29:48,375 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] [2024-08-15 18:29:48,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-08-15 18:29:48,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-08-15 18:29:48,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:29:48,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:29:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash -223789178, now seen corresponding path program 2 times [2024-08-15 18:29:48,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:29:48,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085674534] [2024-08-15 18:29:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:29:48,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:29:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:29:48,606 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-15 18:29:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:29:48,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-15 18:29:48,664 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-15 18:29:48,665 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-15 18:29:48,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-08-15 18:29:48,673 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2024-08-15 18:29:48,678 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2024-08-15 18:29:48,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.08 06:29:48 BoogieIcfgContainer [2024-08-15 18:29:48,725 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-15 18:29:48,726 INFO L158 Benchmark]: Toolchain (without parser) took 6638.61ms. Allocated memory was 155.2MB in the beginning and 257.9MB in the end (delta: 102.8MB). Free memory was 73.3MB in the beginning and 196.8MB in the end (delta: -123.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:29:48,726 INFO L158 Benchmark]: Witness Parser took 0.24ms. Allocated memory is still 155.2MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:29:48,727 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 119.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:29:48,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.52ms. Allocated memory is still 155.2MB. Free memory was 73.1MB in the beginning and 124.3MB in the end (delta: -51.2MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2024-08-15 18:29:48,728 INFO L158 Benchmark]: Boogie Preprocessor took 45.76ms. Allocated memory is still 155.2MB. Free memory was 124.3MB in the beginning and 122.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-08-15 18:29:48,728 INFO L158 Benchmark]: IcfgBuilder took 368.29ms. Allocated memory is still 155.2MB. Free memory was 122.5MB in the beginning and 117.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-08-15 18:29:48,729 INFO L158 Benchmark]: TraceAbstraction took 5867.95ms. Allocated memory was 155.2MB in the beginning and 257.9MB in the end (delta: 102.8MB). Free memory was 117.3MB in the beginning and 196.8MB in the end (delta: -79.5MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2024-08-15 18:29:48,730 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 0.24ms. Allocated memory is still 155.2MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 119.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.52ms. Allocated memory is still 155.2MB. Free memory was 73.1MB in the beginning and 124.3MB in the end (delta: -51.2MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.76ms. Allocated memory is still 155.2MB. Free memory was 124.3MB in the beginning and 122.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 368.29ms. Allocated memory is still 155.2MB. Free memory was 122.5MB in the beginning and 117.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5867.95ms. Allocated memory was 155.2MB in the beginning and 257.9MB in the end (delta: 102.8MB). Free memory was 117.3MB in the beginning and 196.8MB in the end (delta: -79.5MB). Peak memory consumption was 25.1MB. 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: 5.8s, OverallIterations: 2, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.2s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 522 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 469 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 466 IncrementalHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 53 mSDtfsCounter, 466 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, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1057occurred 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, 3.5s 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! [2024-08-15 18:29:48,769 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