./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/gauss_sum.i.v+cfa-reducer.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c ../results/automizer-verification-files/SV-COMP24_unreach-call/gauss_sum.i.v+cfa-reducer.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 05:16:56,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 05:16:56,628 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 05:16:56,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 05:16:56,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 05:16:56,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 05:16:56,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 05:16:56,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 05:16:56,669 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 05:16:56,669 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 05:16:56,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 05:16:56,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 05:16:56,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 05:16:56,672 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 05:16:56,672 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 05:16:56,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 05:16:56,673 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 05:16:56,673 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 05:16:56,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 05:16:56,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 05:16:56,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 05:16:56,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 05:16:56,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 05:16:56,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 05:16:56,679 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 05:16:56,679 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 05:16:56,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 05:16:56,679 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 05:16:56,680 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 05:16:56,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 05:16:56,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 05:16:56,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 05:16:56,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:16:56,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 05:16:56,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 05:16:56,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 05:16:56,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 05:16:56,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 05:16:56,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 05:16:56,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 05:16:56,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 05:16:56,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 05:16:56,684 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 05:16:56,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 05:16:56,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 05:16:56,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 05:16:56,975 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 05:16:56,975 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 05:16:56,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c [2024-09-13 05:16:58,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 05:16:58,507 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 05:16:58,511 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c [2024-09-13 05:16:58,519 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d65a84dd9/5f9b2e579c204455b4fd210dfe52d269/FLAGa13acd641 [2024-09-13 05:16:58,874 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d65a84dd9/5f9b2e579c204455b4fd210dfe52d269 [2024-09-13 05:16:58,877 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 05:16:58,878 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 05:16:58,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/gauss_sum.i.v+cfa-reducer.yml/witness-2.1.yml [2024-09-13 05:16:58,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 05:16:58,922 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 05:16:58,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 05:16:58,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 05:16:58,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 05:16:58,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:16:58" (1/2) ... [2024-09-13 05:16:58,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2933bae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:16:58, skipping insertion in model container [2024-09-13 05:16:58,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:16:58" (1/2) ... [2024-09-13 05:16:58,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@93539ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:16:58, skipping insertion in model container [2024-09-13 05:16:58,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:16:58" (2/2) ... [2024-09-13 05:16:58,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2933bae2 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:58, skipping insertion in model container [2024-09-13 05:16:58,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:16:58" (2/2) ... [2024-09-13 05:16:58,939 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 05:16:58,942 INFO L1541 ArrayList]: Location invariant before [L34-L58] ((((\old(__return_60) == __return_60) && ((((long long) main__sum * 2) == (((long long) main__n * main__n) + main__n)) || (main__i < ((long long) main__n + 1)))) && (1 <= main__n)) && ((((long long) main__sum * 2) + main__i) == ((long long) main__i * main__i))) [2024-09-13 05:16:58,959 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 05:16:59,117 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c[1014,1027] [2024-09-13 05:16:59,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:16:59,131 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 05:16:59,149 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c[1014,1027] Start Parsing Local [2024-09-13 05:16:59,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:16:59,209 INFO L204 MainTranslator]: Completed translation [2024-09-13 05:16:59,210 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59 WrapperNode [2024-09-13 05:16:59,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 05:16:59,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 05:16:59,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 05:16:59,221 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 05:16:59,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,251 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2024-09-13 05:16:59,251 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 05:16:59,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 05:16:59,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 05:16:59,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 05:16:59,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,265 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,275 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]. [2024-09-13 05:16:59,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 05:16:59,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 05:16:59,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 05:16:59,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 05:16:59,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (1/1) ... [2024-09-13 05:16:59,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:16:59,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:16:59,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 05:16:59,312 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 05:16:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 05:16:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 05:16:59,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 05:16:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 05:16:59,397 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 05:16:59,398 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 05:16:59,504 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-09-13 05:16:59,504 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 05:16:59,538 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 05:16:59,539 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 05:16:59,539 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:16:59 BoogieIcfgContainer [2024-09-13 05:16:59,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 05:16:59,542 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 05:16:59,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 05:16:59,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 05:16:59,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 05:16:58" (1/4) ... [2024-09-13 05:16:59,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5ff5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:16:59, skipping insertion in model container [2024-09-13 05:16:59,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:16:58" (2/4) ... [2024-09-13 05:16:59,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5ff5ea and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:16:59, skipping insertion in model container [2024-09-13 05:16:59,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:16:59" (3/4) ... [2024-09-13 05:16:59,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5ff5ea and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:16:59, skipping insertion in model container [2024-09-13 05:16:59,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:16:59" (4/4) ... [2024-09-13 05:16:59,549 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.v+cfa-reducer.c [2024-09-13 05:16:59,568 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 05:16:59,568 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-13 05:16:59,613 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 05:16:59,621 INFO L336 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@4cd5fc42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 05:16:59,622 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-13 05:16:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 8 states have (on average 1.75) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:16:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-13 05:16:59,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:16:59,635 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-13 05:16:59,636 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 05:16:59,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:16:59,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1883966, now seen corresponding path program 1 times [2024-09-13 05:16:59,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:16:59,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644518239] [2024-09-13 05:16:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:16:59,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:16:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:16:59,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595218436] [2024-09-13 05:16:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:16:59,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:16:59,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:16:59,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:16:59,773 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 05:16:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:16:59,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 05:16:59,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:16:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:16:59,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 05:16:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:16:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644518239] [2024-09-13 05:16:59,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:16:59,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595218436] [2024-09-13 05:16:59,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595218436] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:16:59,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:16:59,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:16:59,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739939487] [2024-09-13 05:16:59,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:16:59,941 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 05:16:59,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:16:59,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 05:16:59,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-13 05:16:59,971 INFO L87 Difference]: Start difference. First operand has 11 states, 8 states have (on average 1.75) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:00,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:17:00,029 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2024-09-13 05:17:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 05:17:00,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-09-13 05:17:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:17:00,039 INFO L225 Difference]: With dead ends: 15 [2024-09-13 05:17:00,039 INFO L226 Difference]: Without dead ends: 11 [2024-09-13 05:17:00,041 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-13 05:17:00,044 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:17:00,046 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:17:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-09-13 05:17:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-09-13 05:17:00,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2024-09-13 05:17:00,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2024-09-13 05:17:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:17:00,073 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2024-09-13 05:17:00,073 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:00,073 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2024-09-13 05:17:00,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-13 05:17:00,074 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:17:00,074 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-13 05:17:00,092 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 05:17:00,278 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-09-13 05:17:00,279 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 05:17:00,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:17:00,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1810492910, now seen corresponding path program 1 times [2024-09-13 05:17:00,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:17:00,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69912847] [2024-09-13 05:17:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:00,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:17:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:17:00,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874691447] [2024-09-13 05:17:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:00,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:17:00,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:17:00,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:17:00,308 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 05:17:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:00,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 05:17:00,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:17:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:00,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:17:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:17:00,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:17:00,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69912847] [2024-09-13 05:17:00,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:17:00,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874691447] [2024-09-13 05:17:00,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874691447] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:17:00,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 05:17:00,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-09-13 05:17:00,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389394912] [2024-09-13 05:17:00,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 05:17:00,738 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 05:17:00,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:17:00,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 05:17:00,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-09-13 05:17:00,739 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:17:00,771 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2024-09-13 05:17:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 05:17:00,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-09-13 05:17:00,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:17:00,772 INFO L225 Difference]: With dead ends: 12 [2024-09-13 05:17:00,772 INFO L226 Difference]: Without dead ends: 12 [2024-09-13 05:17:00,773 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-09-13 05:17:00,774 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:17:00,774 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:17:00,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-09-13 05:17:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2024-09-13 05:17:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2024-09-13 05:17:00,777 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2024-09-13 05:17:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:17:00,777 INFO L474 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2024-09-13 05:17:00,777 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2024-09-13 05:17:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-13 05:17:00,778 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:17:00,778 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:17:00,795 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 05:17:00,979 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:17:00,979 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 05:17:00,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:17:00,980 INFO L85 PathProgramCache]: Analyzing trace with hash 195029383, now seen corresponding path program 1 times [2024-09-13 05:17:00,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:17:00,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102565704] [2024-09-13 05:17:00,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:17:00,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:17:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:17:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 05:17:01,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:17:01,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102565704] [2024-09-13 05:17:01,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102565704] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:17:01,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:17:01,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 05:17:01,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924081677] [2024-09-13 05:17:01,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:17:01,129 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 05:17:01,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:17:01,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 05:17:01,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:17:01,130 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:01,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:17:01,145 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2024-09-13 05:17:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 05:17:01,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-13 05:17:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:17:01,146 INFO L225 Difference]: With dead ends: 8 [2024-09-13 05:17:01,146 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 05:17:01,146 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:17:01,147 INFO L434 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:17:01,147 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:17:01,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 05:17:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 05:17:01,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 05:17:01,149 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2024-09-13 05:17:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:17:01,149 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 05:17:01,149 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:17:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 05:17:01,149 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 05:17:01,152 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-09-13 05:17:01,152 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-09-13 05:17:01,152 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 05:17:01,155 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-09-13 05:17:01,157 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 05:17:01,158 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-13 05:17:01,158 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-13 05:17:01,159 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 05:17:01 BoogieIcfgContainer [2024-09-13 05:17:01,159 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 05:17:01,160 INFO L158 Benchmark]: Toolchain (without parser) took 2238.29ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 81.6MB in the beginning and 138.0MB in the end (delta: -56.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:17:01,160 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:17:01,160 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 155.2MB. Free memory was 83.6MB in the beginning and 83.4MB in the end (delta: 162.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:17:01,161 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.51ms. Allocated memory is still 155.2MB. Free memory was 81.4MB in the beginning and 122.7MB in the end (delta: -41.3MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2024-09-13 05:17:01,161 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.05ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 122.7MB in the beginning and 171.7MB in the end (delta: -49.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:17:01,162 INFO L158 Benchmark]: Boogie Preprocessor took 30.13ms. Allocated memory is still 201.3MB. Free memory was 171.7MB in the beginning and 170.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:17:01,162 INFO L158 Benchmark]: RCFGBuilder took 256.38ms. Allocated memory is still 201.3MB. Free memory was 170.4MB in the beginning and 157.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 05:17:01,162 INFO L158 Benchmark]: TraceAbstraction took 1617.67ms. Allocated memory is still 201.3MB. Free memory was 157.0MB in the beginning and 138.0MB in the end (delta: 19.0MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2024-09-13 05:17:01,164 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 105.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 155.2MB. Free memory was 83.6MB in the beginning and 83.4MB in the end (delta: 162.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.51ms. Allocated memory is still 155.2MB. Free memory was 81.4MB in the beginning and 122.7MB in the end (delta: -41.3MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.05ms. Allocated memory was 155.2MB in the beginning and 201.3MB in the end (delta: 46.1MB). Free memory was 122.7MB in the beginning and 171.7MB in the end (delta: -49.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.13ms. Allocated memory is still 201.3MB. Free memory was 171.7MB in the beginning and 170.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 256.38ms. Allocated memory is still 201.3MB. Free memory was 170.4MB in the beginning and 157.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1617.67ms. Allocated memory is still 201.3MB. Free memory was 157.0MB in the beginning and 138.0MB in the end (delta: 19.0MB). Peak memory consumption was 16.9MB. 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 - PositiveResult [Line: 34]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 49]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 10 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 1 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 05:17:01,190 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE