/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 20:08:23,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 20:08:23,770 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 20:08:23,774 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 20:08:23,774 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 20:08:23,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 20:08:23,789 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 20:08:23,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 20:08:23,789 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 20:08:23,790 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 20:08:23,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 20:08:23,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 20:08:23,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 20:08:23,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 20:08:23,791 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 20:08:23,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 20:08:23,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 20:08:23,791 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 20:08:23,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 20:08:23,792 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 20:08:23,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 20:08:23,792 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 20:08:23,793 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 20:08:23,793 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 20:08:23,793 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 20:08:23,793 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 20:08:23,793 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 20:08:23,794 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 20:08:23,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 20:08:23,794 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 20:08:23,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 20:08:23,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 20:08:23,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 20:08:23,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 20:08:23,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 20:08:23,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 20:08:23,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 20:08:23,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 20:08:23,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 20:08:23,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 20:08:23,796 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 20:08:23,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 20:08:23,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 20:08:23,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 20:08:23,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 20:08:24,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 20:08:24,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 20:08:24,017 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 20:08:24,017 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 20:08:24,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound100.c [2023-12-19 20:08:25,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 20:08:25,227 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 20:08:25,228 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound100.c [2023-12-19 20:08:25,236 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd56d543/3487593db7c14f829b5a750e71488158/FLAGc6a400a41 [2023-12-19 20:08:25,252 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd56d543/3487593db7c14f829b5a750e71488158 [2023-12-19 20:08:25,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 20:08:25,258 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 20:08:25,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 20:08:25,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 20:08:25,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 20:08:25,280 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c77eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25, skipping insertion in model container [2023-12-19 20:08:25,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,301 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 20:08:25,434 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound100.c[535,548] [2023-12-19 20:08:25,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 20:08:25,457 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 20:08:25,464 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound100.c[535,548] [2023-12-19 20:08:25,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 20:08:25,480 INFO L206 MainTranslator]: Completed translation [2023-12-19 20:08:25,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25 WrapperNode [2023-12-19 20:08:25,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 20:08:25,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 20:08:25,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 20:08:25,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 20:08:25,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,489 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,499 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2023-12-19 20:08:25,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 20:08:25,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 20:08:25,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 20:08:25,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 20:08:25,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,514 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]. [2023-12-19 20:08:25,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,516 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 20:08:25,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 20:08:25,521 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 20:08:25,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 20:08:25,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (1/1) ... [2023-12-19 20:08:25,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 20:08:25,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:08:25,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 20:08:25,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 20:08:25,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 20:08:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 20:08:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 20:08:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 20:08:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 20:08:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 20:08:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-19 20:08:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-19 20:08:25,602 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 20:08:25,603 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 20:08:25,714 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 20:08:25,727 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 20:08:25,727 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-19 20:08:25,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:08:25 BoogieIcfgContainer [2023-12-19 20:08:25,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 20:08:25,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 20:08:25,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 20:08:25,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 20:08:25,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:08:25" (1/3) ... [2023-12-19 20:08:25,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3592aa9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:08:25, skipping insertion in model container [2023-12-19 20:08:25,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:08:25" (2/3) ... [2023-12-19 20:08:25,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3592aa9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:08:25, skipping insertion in model container [2023-12-19 20:08:25,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:08:25" (3/3) ... [2023-12-19 20:08:25,733 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound100.c [2023-12-19 20:08:25,743 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 20:08:25,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 20:08:25,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 20:08:25,786 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=true, 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;@72874d31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 20:08:25,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 20:08:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 20:08:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-19 20:08:25,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:08:25,800 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:08:25,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:08:25,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:08:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1294213950, now seen corresponding path program 1 times [2023-12-19 20:08:25,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:08:25,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082139471] [2023-12-19 20:08:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:08:25,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:08:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:08:25,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:08:25,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082139471] [2023-12-19 20:08:25,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 20:08:25,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563399743] [2023-12-19 20:08:25,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:08:25,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:08:25,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:08:25,905 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) [2023-12-19 20:08:25,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 20:08:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:08:25,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 20:08:25,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:08:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 20:08:26,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 20:08:26,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563399743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 20:08:26,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 20:08:26,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 20:08:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780815137] [2023-12-19 20:08:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 20:08:26,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 20:08:26,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:08:26,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 20:08:26,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 20:08:26,049 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-19 20:08:26,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:08:26,085 INFO L93 Difference]: Finished difference Result 56 states and 95 transitions. [2023-12-19 20:08:26,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 20:08:26,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-12-19 20:08:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:08:26,092 INFO L225 Difference]: With dead ends: 56 [2023-12-19 20:08:26,092 INFO L226 Difference]: Without dead ends: 27 [2023-12-19 20:08:26,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 20:08:26,100 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 20:08:26,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 20:08:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-19 20:08:26,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-19 20:08:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-19 20:08:26,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2023-12-19 20:08:26,134 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 28 [2023-12-19 20:08:26,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:08:26,134 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2023-12-19 20:08:26,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-19 20:08:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2023-12-19 20:08:26,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-19 20:08:26,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:08:26,138 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:08:26,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 20:08:26,344 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 [2023-12-19 20:08:26,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:08:26,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:08:26,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1121299334, now seen corresponding path program 1 times [2023-12-19 20:08:26,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:08:26,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163687565] [2023-12-19 20:08:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:08:26,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:08:26,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:08:26,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371779442] [2023-12-19 20:08:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:08:26,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:08:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:08:26,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 20:08:26,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 20:08:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:08:26,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 20:08:26,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:08:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 20:08:26,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 20:08:26,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:08:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163687565] [2023-12-19 20:08:26,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:08:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371779442] [2023-12-19 20:08:26,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371779442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 20:08:26,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 20:08:26,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 20:08:26,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454042297] [2023-12-19 20:08:26,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 20:08:26,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 20:08:26,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:08:26,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 20:08:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 20:08:26,624 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-19 20:08:29,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-19 20:08:29,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:08:29,707 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2023-12-19 20:08:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 20:08:29,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2023-12-19 20:08:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:08:29,708 INFO L225 Difference]: With dead ends: 43 [2023-12-19 20:08:29,708 INFO L226 Difference]: Without dead ends: 41 [2023-12-19 20:08:29,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 20:08:29,709 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 20:08:29,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 90 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 20:08:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-19 20:08:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-12-19 20:08:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-19 20:08:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2023-12-19 20:08:29,725 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 28 [2023-12-19 20:08:29,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:08:29,726 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2023-12-19 20:08:29,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-19 20:08:29,726 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2023-12-19 20:08:29,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-19 20:08:29,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 20:08:29,727 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 20:08:29,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 20:08:29,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 20:08:29,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 20:08:29,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 20:08:29,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1015308453, now seen corresponding path program 1 times [2023-12-19 20:08:29,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 20:08:29,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756911691] [2023-12-19 20:08:29,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:08:29,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 20:08:29,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 20:08:29,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704400490] [2023-12-19 20:08:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 20:08:29,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:08:29,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:08:29,955 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 20:08:29,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 20:08:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 20:08:29,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 20:08:29,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 20:08:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 20:08:30,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 20:08:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 20:08:30,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 20:08:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756911691] [2023-12-19 20:08:30,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 20:08:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704400490] [2023-12-19 20:08:30,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704400490] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 20:08:30,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 20:08:30,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-12-19 20:08:30,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824125740] [2023-12-19 20:08:30,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 20:08:30,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 20:08:30,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 20:08:30,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 20:08:30,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-19 20:08:30,117 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-19 20:08:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 20:08:30,188 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2023-12-19 20:08:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 20:08:30,189 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 34 [2023-12-19 20:08:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 20:08:30,189 INFO L225 Difference]: With dead ends: 40 [2023-12-19 20:08:30,189 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 20:08:30,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-12-19 20:08:30,190 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 20:08:30,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 130 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 20:08:30,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 20:08:30,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 20:08:30,191 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) [2023-12-19 20:08:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 20:08:30,192 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2023-12-19 20:08:30,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 20:08:30,192 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 20:08:30,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-19 20:08:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 20:08:30,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 20:08:30,194 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 20:08:30,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 20:08:30,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 20:08:30,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 20:08:30,485 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 55) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~A~0#1| 4)) (.cse1 (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse2 (* 2 |ULTIMATE.start_main_~u~0#1|)) (.cse3 (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)))) (and (= (+ .cse0 (* |ULTIMATE.start_main_~r~0#1| 4) .cse1 .cse2) .cse3) (= (+ .cse0 .cse1 .cse2) .cse3))) [2023-12-19 20:08:30,485 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-12-19 20:08:30,485 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-12-19 20:08:30,485 INFO L895 garLoopResultBuilder]: At program point L48-1(lines 48 54) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) [2023-12-19 20:08:30,485 INFO L895 garLoopResultBuilder]: At program point L48-2(lines 35 55) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) [2023-12-19 20:08:30,486 INFO L895 garLoopResultBuilder]: At program point L40-2(lines 40 46) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) [2023-12-19 20:08:30,486 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) [2023-12-19 20:08:30,486 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 55) no Hoare annotation was computed. [2023-12-19 20:08:30,486 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-12-19 20:08:30,486 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2023-12-19 20:08:30,486 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) [2023-12-19 20:08:30,486 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 48 54) no Hoare annotation was computed. [2023-12-19 20:08:30,486 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) [2023-12-19 20:08:30,486 INFO L899 garLoopResultBuilder]: For program point L41-1(lines 40 46) no Hoare annotation was computed. [2023-12-19 20:08:30,486 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 20:08:30,487 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-12-19 20:08:30,487 INFO L902 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2023-12-19 20:08:30,487 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 20:08:30,487 INFO L902 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2023-12-19 20:08:30,487 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-12-19 20:08:30,487 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-12-19 20:08:30,487 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2023-12-19 20:08:30,487 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-12-19 20:08:30,487 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-12-19 20:08:30,487 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-12-19 20:08:30,488 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-12-19 20:08:30,488 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-12-19 20:08:30,488 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-12-19 20:08:30,488 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-12-19 20:08:30,490 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-19 20:08:30,491 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 20:08:30,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 08:08:30 BoogieIcfgContainer [2023-12-19 20:08:30,499 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 20:08:30,499 INFO L158 Benchmark]: Toolchain (without parser) took 5241.26ms. Allocated memory is still 312.5MB. Free memory was 272.3MB in the beginning and 208.6MB in the end (delta: 63.7MB). Peak memory consumption was 64.3MB. Max. memory is 8.0GB. [2023-12-19 20:08:30,499 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 235.9MB. Free memory is still 185.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 20:08:30,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.57ms. Allocated memory is still 312.5MB. Free memory was 272.0MB in the beginning and 260.9MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 20:08:30,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.79ms. Allocated memory is still 312.5MB. Free memory was 260.9MB in the beginning and 259.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 20:08:30,500 INFO L158 Benchmark]: Boogie Preprocessor took 19.92ms. Allocated memory is still 312.5MB. Free memory was 259.3MB in the beginning and 257.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 20:08:30,500 INFO L158 Benchmark]: RCFGBuilder took 207.29ms. Allocated memory is still 312.5MB. Free memory was 257.4MB in the beginning and 245.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-19 20:08:30,500 INFO L158 Benchmark]: TraceAbstraction took 4769.47ms. Allocated memory is still 312.5MB. Free memory was 244.8MB in the beginning and 208.6MB in the end (delta: 36.2MB). Peak memory consumption was 37.1MB. Max. memory is 8.0GB. [2023-12-19 20:08:30,501 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 235.9MB. Free memory is still 185.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.57ms. Allocated memory is still 312.5MB. Free memory was 272.0MB in the beginning and 260.9MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.79ms. Allocated memory is still 312.5MB. Free memory was 260.9MB in the beginning and 259.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.92ms. Allocated memory is still 312.5MB. Free memory was 259.3MB in the beginning and 257.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 207.29ms. Allocated memory is still 312.5MB. Free memory was 257.4MB in the beginning and 245.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4769.47ms. Allocated memory is still 312.5MB. Free memory was 244.8MB in the beginning and 208.6MB in the end (delta: 36.2MB). Peak memory consumption was 37.1MB. Max. memory is 8.0GB. * 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: 14]: 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 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 255 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 176 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 122 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 79 mSDtfsCounter, 122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, InterpolantAutomatonStates: 13, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 29 PreInvPairs, 45 NumberOfFragments, 172 HoareAnnotationTreeSize, 29 FormulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FormulaSimplificationsInter, 258 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 281 SizeOfPredicates, 5 NumberOfNonLiveVariables, 242 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 98/100 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 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((A * 4) + (r * 4)) + (v * v)) + (2 * u)) == ((2 * v) + (u * u))) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((A * 4) + (r * 4)) + (v * v)) + (2 * u)) == ((2 * v) + (u * u))) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((((A * 4) + (r * 4)) + (v * v)) + (2 * u)) == ((2 * v) + (u * u))) RESULT: Ultimate proved your program to be correct! [2023-12-19 20:08:30,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...