./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/recursive-simple/sum_2x3-1.c --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/sum_2x3-1.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/sum_2x3-1.c ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/sum_2x3-1.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 14:34:25,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-14 14:34:25,570 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-14 14:34:25,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-14 14:34:25,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-14 14:34:25,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-14 14:34:25,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-14 14:34:25,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-14 14:34:25,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-14 14:34:25,644 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-14 14:34:25,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-14 14:34:25,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-14 14:34:25,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-14 14:34:25,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-14 14:34:25,647 INFO L153 SettingsManager]: * Use SBE=true [2024-08-14 14:34:25,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-14 14:34:25,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-14 14:34:25,648 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-14 14:34:25,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-14 14:34:25,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-14 14:34:25,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-14 14:34:25,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-14 14:34:25,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-14 14:34:25,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-14 14:34:25,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-14 14:34:25,655 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-14 14:34:25,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-14 14:34:25,655 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-14 14:34:25,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-14 14:34:25,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-14 14:34:25,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-14 14:34:25,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-14 14:34:25,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-14 14:34:25,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-14 14:34:25,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-14 14:34:25,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-14 14:34:25,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-14 14:34:25,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-14 14:34:25,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-14 14:34:25,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-14 14:34:25,660 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-14 14:34:25,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-14 14:34:25,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-14 14:34:25,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-14 14:34:25,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-14 14:34:25,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-14 14:34:25,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-14 14:34:25,930 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-14 14:34:25,930 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-14 14:34:25,932 INFO L431 ainManager$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/sum_2x3-1.yml/witness.yml [2024-08-14 14:34:26,005 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-14 14:34:26,005 INFO L274 PluginConnector]: CDTParser initialized [2024-08-14 14:34:26,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_2x3-1.c [2024-08-14 14:34:27,503 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-14 14:34:27,685 INFO L384 CDTParser]: Found 1 translation units. [2024-08-14 14:34:27,686 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_2x3-1.c [2024-08-14 14:34:27,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4899db2f/b029cb9b60c94798bd51f317985c3a45/FLAGce213fece [2024-08-14 14:34:27,710 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4899db2f/b029cb9b60c94798bd51f317985c3a45 [2024-08-14 14:34:27,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-14 14:34:27,712 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-14 14:34:27,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-14 14:34:27,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-14 14:34:27,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-14 14:34:27,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:34:26" (1/2) ... [2024-08-14 14:34:27,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507c82d2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:27, skipping insertion in model container [2024-08-14 14:34:27,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:34:26" (1/2) ... [2024-08-14 14:34:27,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@304c657c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:34:27, skipping insertion in model container [2024-08-14 14:34:27,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:34:27" (2/2) ... [2024-08-14 14:34:27,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507c82d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27, skipping insertion in model container [2024-08-14 14:34:27,725 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:34:27" (2/2) ... [2024-08-14 14:34:27,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-14 14:34:27,912 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/sum_2x3-1.c[479,492] [2024-08-14 14:34:27,916 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:34:27,940 INFO L200 MainTranslator]: Completed pre-run [2024-08-14 14:34:27,956 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/sum_2x3-1.c[479,492] [2024-08-14 14:34:27,958 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:34:27,974 INFO L204 MainTranslator]: Completed translation [2024-08-14 14:34:27,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27 WrapperNode [2024-08-14 14:34:27,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-14 14:34:27,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-14 14:34:27,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-14 14:34:27,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-14 14:34:27,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27" (1/1) ... [2024-08-14 14:34:27,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27" (1/1) ... [2024-08-14 14:34:27,996 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27" (1/1) ... [2024-08-14 14:34:28,009 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 14:34:28,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27" (1/1) ... [2024-08-14 14:34:28,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27" (1/1) ... [2024-08-14 14:34:28,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27" (1/1) ... [2024-08-14 14:34:28,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27" (1/1) ... [2024-08-14 14:34:28,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27" (1/1) ... [2024-08-14 14:34:28,020 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-14 14:34:28,022 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-14 14:34:28,022 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-14 14:34:28,022 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-14 14:34:28,023 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27" (1/1) ... [2024-08-14 14:34:28,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-14 14:34:28,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-14 14:34:28,056 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 14:34:28,064 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 14:34:28,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-14 14:34:28,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-14 14:34:28,110 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-14 14:34:28,110 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-08-14 14:34:28,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-14 14:34:28,110 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-14 14:34:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-14 14:34:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-14 14:34:28,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-14 14:34:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-08-14 14:34:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-14 14:34:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-14 14:34:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-14 14:34:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-14 14:34:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-14 14:34:28,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-14 14:34:28,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-14 14:34:28,187 INFO L273 CfgBuilder]: Building ICFG [2024-08-14 14:34:28,190 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-14 14:34:28,265 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L9: havoc #t~ret4; [2024-08-14 14:34:28,318 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-08-14 14:34:28,319 INFO L327 CfgBuilder]: Performing block encoding [2024-08-14 14:34:28,329 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-14 14:34:28,330 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-14 14:34:28,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:34:28 BoogieIcfgContainer [2024-08-14 14:34:28,330 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-14 14:34:28,333 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-14 14:34:28,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-14 14:34:28,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-14 14:34:28,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:34:26" (1/4) ... [2024-08-14 14:34:28,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78777b97 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 14.08 02:34:28, skipping insertion in model container [2024-08-14 14:34:28,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.08 02:34:27" (2/4) ... [2024-08-14 14:34:28,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78777b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 02:34:28, skipping insertion in model container [2024-08-14 14:34:28,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:34:27" (3/4) ... [2024-08-14 14:34:28,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78777b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 02:34:28, skipping insertion in model container [2024-08-14 14:34:28,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:34:28" (4/4) ... [2024-08-14 14:34:28,339 INFO L119 eAbstractionObserver]: Analyzing ICFG sum_2x3-1.c [2024-08-14 14:34:28,339 WARN L130 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-14 14:34:28,357 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-14 14:34:28,357 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-14 14:34:28,386 INFO L92 WitnessUtils]: Constructing product of automaton with 22 states and violation witness of the following lengths: [11] [2024-08-14 14:34:28,389 INFO L82 GeneralOperation]: Start removeDeadEnds. Operand has 22 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-08-14 14:34:28,447 INFO L88 GeneralOperation]: Finished removeDeadEnds. Reduced from 60 states to 28 states. [2024-08-14 14:34:28,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-14 14:34:28,479 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;@55f3c0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 14:34:28,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-14 14:34:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2024-08-14 14:34:28,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-08-14 14:34:28,489 INFO L187 NwaCegarLoop]: Found error trace [2024-08-14 14:34:28,490 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-14 14:34:28,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-14 14:34:28,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 14:34:28,497 INFO L85 PathProgramCache]: Analyzing trace with hash 612226088, now seen corresponding path program 1 times [2024-08-14 14:34:28,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 14:34:28,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093089346] [2024-08-14 14:34:28,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:34:28,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 14:34:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 14:34:28,636 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 14:34:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 14:34:28,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 14:34:28,688 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 14:34:28,690 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-14 14:34:28,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-14 14:34:28,698 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-08-14 14:34:28,704 INFO L196 ceAbstractionStarter]: Computing trace abstraction results [2024-08-14 14:34:28,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.08 02:34:28 BoogieIcfgContainer [2024-08-14 14:34:28,722 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-14 14:34:28,723 INFO L158 Benchmark]: Toolchain (without parser) took 1011.48ms. Allocated memory is still 184.5MB. Free memory was 129.3MB in the beginning and 86.6MB in the end (delta: 42.7MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-08-14 14:34:28,724 INFO L158 Benchmark]: Witness Parser took 0.21ms. Allocated memory is still 184.5MB. Free memory is still 151.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:34:28,724 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:34:28,725 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.06ms. Allocated memory is still 184.5MB. Free memory was 129.3MB in the beginning and 118.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-08-14 14:34:28,725 INFO L158 Benchmark]: Boogie Preprocessor took 43.89ms. Allocated memory is still 184.5MB. Free memory was 118.0MB in the beginning and 115.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-08-14 14:34:28,726 INFO L158 Benchmark]: IcfgBuilder took 308.71ms. Allocated memory is still 184.5MB. Free memory was 115.9MB in the beginning and 104.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-08-14 14:34:28,726 INFO L158 Benchmark]: TraceAbstraction took 389.96ms. Allocated memory is still 184.5MB. Free memory was 104.1MB in the beginning and 86.6MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-08-14 14:34:28,729 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 0.21ms. Allocated memory is still 184.5MB. Free memory is still 151.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.06ms. Allocated memory is still 184.5MB. Free memory was 129.3MB in the beginning and 118.0MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.89ms. Allocated memory is still 184.5MB. Free memory was 118.0MB in the beginning and 115.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 308.71ms. Allocated memory is still 184.5MB. Free memory was 115.9MB in the beginning and 104.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 389.96ms. Allocated memory is still 184.5MB. Free memory was 104.1MB in the beginning and 86.6MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. 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: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] int a = 2; [L15] int b = 3; VAL [a=2, b=3] [L16] CALL, EXPR sum(a, b) VAL [\old(m)=3, \old(n)=2] [L6] COND FALSE !(n <= 0) VAL [\old(m)=3, \old(n)=2, m=3, n=2] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=1] [L6] COND FALSE !(n <= 0) VAL [\old(m)=4, \old(n)=1, m=4, n=1] [L9] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=0] [L6] COND TRUE n <= 0 [L7] return m + n; VAL [\old(m)=5, \old(n)=0, \result=5] [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=1, m=4, n=1] [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=2, m=3, n=2] [L9] return sum(n - 1, m + 1); [L16] RET, EXPR sum(a, b) VAL [a=2, b=3] [L16] int result = sum(a, b); [L17] COND TRUE result == a + b [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 14:34:28,762 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