/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 08:11:11,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 08:11:11,897 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 08:11:11,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 08:11:11,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 08:11:11,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 08:11:11,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 08:11:11,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 08:11:11,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 08:11:11,927 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 08:11:11,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 08:11:11,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 08:11:11,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 08:11:11,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 08:11:11,928 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 08:11:11,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 08:11:11,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 08:11:11,929 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 08:11:11,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 08:11:11,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 08:11:11,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 08:11:11,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 08:11:11,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 08:11:11,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 08:11:11,931 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 08:11:11,931 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 08:11:11,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 08:11:11,931 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 08:11:11,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 08:11:11,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 08:11:11,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 08:11:11,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 08:11:11,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:11:11,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 08:11:11,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 08:11:11,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 08:11:11,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 08:11:11,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 08:11:11,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 08:11:11,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 08:11:11,934 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 08:11:11,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 08:11:11,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 08:11:11,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 08:11:12,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 08:11:12,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 08:11:12,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 08:11:12,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 08:11:12,136 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 08:11:12,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_valuebound5.c [2023-12-21 08:11:13,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 08:11:13,206 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 08:11:13,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_valuebound5.c [2023-12-21 08:11:13,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358bfec97/7aed2263f31f48938625437670ff28c3/FLAG218c5506a [2023-12-21 08:11:13,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358bfec97/7aed2263f31f48938625437670ff28c3 [2023-12-21 08:11:13,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 08:11:13,221 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 08:11:13,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 08:11:13,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 08:11:13,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 08:11:13,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a498324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13, skipping insertion in model container [2023-12-21 08:11:13,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,243 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 08:11:13,358 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/ps3-ll_valuebound5.c[458,471] [2023-12-21 08:11:13,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:11:13,379 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 08:11:13,389 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/ps3-ll_valuebound5.c[458,471] [2023-12-21 08:11:13,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:11:13,409 INFO L206 MainTranslator]: Completed translation [2023-12-21 08:11:13,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13 WrapperNode [2023-12-21 08:11:13,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 08:11:13,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 08:11:13,411 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 08:11:13,411 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 08:11:13,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,435 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2023-12-21 08:11:13,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 08:11:13,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 08:11:13,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 08:11:13,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 08:11:13,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,449 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,461 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]. [2023-12-21 08:11:13,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,475 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,476 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 08:11:13,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 08:11:13,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 08:11:13,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 08:11:13,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (1/1) ... [2023-12-21 08:11:13,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:11:13,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:11:13,502 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) [2023-12-21 08:11:13,505 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 [2023-12-21 08:11:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 08:11:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 08:11:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 08:11:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 08:11:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 08:11:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 08:11:13,562 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 08:11:13,564 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 08:11:13,643 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 08:11:13,657 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 08:11:13,657 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 08:11:13,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:11:13 BoogieIcfgContainer [2023-12-21 08:11:13,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 08:11:13,659 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 08:11:13,659 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 08:11:13,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 08:11:13,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:11:13" (1/3) ... [2023-12-21 08:11:13,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578fb5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:11:13, skipping insertion in model container [2023-12-21 08:11:13,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:11:13" (2/3) ... [2023-12-21 08:11:13,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578fb5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:11:13, skipping insertion in model container [2023-12-21 08:11:13,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:11:13" (3/3) ... [2023-12-21 08:11:13,663 INFO L112 eAbstractionObserver]: Analyzing ICFG ps3-ll_valuebound5.c [2023-12-21 08:11:13,674 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 08:11:13,674 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 08:11:13,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 08:11:13,705 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;@59d7c503, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 08:11:13,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 08:11:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 08:11:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 08:11:13,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:11:13,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:11:13,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:11:13,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:11:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1892700911, now seen corresponding path program 1 times [2023-12-21 08:11:13,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:11:13,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006771248] [2023-12-21 08:11:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:11:13,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:11:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:11:13,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:11:13,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006771248] [2023-12-21 08:11:13,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 08:11:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600352663] [2023-12-21 08:11:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:11:13,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:11:13,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:11:13,812 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) [2023-12-21 08:11:13,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 08:11:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:11:13,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 08:11:13,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:11:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:11:13,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:11:13,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600352663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:11:13,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:11:13,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 08:11:13,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607704377] [2023-12-21 08:11:13,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:11:13,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 08:11:13,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:11:13,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 08:11:13,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 08:11:13,902 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 08:11:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:11:13,918 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2023-12-21 08:11:13,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 08:11:13,924 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-21 08:11:13,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:11:13,928 INFO L225 Difference]: With dead ends: 28 [2023-12-21 08:11:13,928 INFO L226 Difference]: Without dead ends: 13 [2023-12-21 08:11:13,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 08:11:13,932 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2023-12-21 08:11:13,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:11:13,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-21 08:11:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-21 08:11:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 08:11:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-12-21 08:11:13,954 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2023-12-21 08:11:13,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:11:13,955 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-12-21 08:11:13,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 08:11:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-12-21 08:11:13,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 08:11:13,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:11:13,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:11:13,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 08:11:14,160 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 [2023-12-21 08:11:14,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:11:14,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:11:14,161 INFO L85 PathProgramCache]: Analyzing trace with hash -115906089, now seen corresponding path program 1 times [2023-12-21 08:11:14,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:11:14,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11752347] [2023-12-21 08:11:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:11:14,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:11:14,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 08:11:14,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489274570] [2023-12-21 08:11:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:11:14,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:11:14,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:11:14,182 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) [2023-12-21 08:11:14,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 08:11:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:11:14,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 08:11:14,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:11:14,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:11:14,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:11:14,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:11:14,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11752347] [2023-12-21 08:11:14,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 08:11:14,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489274570] [2023-12-21 08:11:14,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489274570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:11:14,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:11:14,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 08:11:14,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528552903] [2023-12-21 08:11:14,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:11:14,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 08:11:14,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:11:14,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 08:11:14,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 08:11:14,329 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 08:11:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:11:14,365 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2023-12-21 08:11:14,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 08:11:14,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-21 08:11:14,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:11:14,366 INFO L225 Difference]: With dead ends: 23 [2023-12-21 08:11:14,366 INFO L226 Difference]: Without dead ends: 20 [2023-12-21 08:11:14,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:11:14,367 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:11:14,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:11:14,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-21 08:11:14,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-21 08:11:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 08:11:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-12-21 08:11:14,371 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 8 [2023-12-21 08:11:14,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:11:14,372 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-12-21 08:11:14,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 08:11:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-12-21 08:11:14,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 08:11:14,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:11:14,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:11:14,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 08:11:14,577 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 [2023-12-21 08:11:14,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:11:14,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:11:14,578 INFO L85 PathProgramCache]: Analyzing trace with hash -339209529, now seen corresponding path program 1 times [2023-12-21 08:11:14,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:11:14,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810488645] [2023-12-21 08:11:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:11:14,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:11:14,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 08:11:14,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009158553] [2023-12-21 08:11:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:11:14,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:11:14,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:11:14,589 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) [2023-12-21 08:11:14,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 08:11:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:11:14,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 08:11:14,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:11:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 08:11:14,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 08:11:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 08:11:14,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:11:14,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810488645] [2023-12-21 08:11:14,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 08:11:14,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009158553] [2023-12-21 08:11:14,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009158553] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 08:11:14,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 08:11:14,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-21 08:11:14,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2486630] [2023-12-21 08:11:14,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:11:14,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 08:11:14,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:11:14,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 08:11:14,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:11:14,767 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 08:11:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:11:14,799 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2023-12-21 08:11:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 08:11:14,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-21 08:11:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:11:14,800 INFO L225 Difference]: With dead ends: 20 [2023-12-21 08:11:14,800 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 08:11:14,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-21 08:11:14,803 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:11:14,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:11:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 08:11:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 08:11:14,806 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) [2023-12-21 08:11:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 08:11:14,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2023-12-21 08:11:14,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:11:14,806 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 08:11:14,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 08:11:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 08:11:14,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 08:11:14,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 08:11:14,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 08:11:15,019 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 [2023-12-21 08:11:15,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 08:11:15,049 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-21 08:11:15,049 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)) [2023-12-21 08:11:15,052 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)) [2023-12-21 08:11:15,052 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-21 08:11:15,052 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-12-21 08:11:15,053 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)) [2023-12-21 08:11:15,053 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2023-12-21 08:11:15,053 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-12-21 08:11:15,053 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2023-12-21 08:11:15,053 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-12-21 08:11:15,053 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-12-21 08:11:15,053 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-12-21 08:11:15,053 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-12-21 08:11:15,053 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-12-21 08:11:15,054 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-12-21 08:11:15,056 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-21 08:11:15,057 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 08:11:15,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 08:11:15 BoogieIcfgContainer [2023-12-21 08:11:15,069 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 08:11:15,069 INFO L158 Benchmark]: Toolchain (without parser) took 1847.89ms. Allocated memory was 226.5MB in the beginning and 310.4MB in the end (delta: 83.9MB). Free memory was 184.6MB in the beginning and 245.1MB in the end (delta: -60.5MB). Peak memory consumption was 24.2MB. Max. memory is 8.0GB. [2023-12-21 08:11:15,070 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 226.5MB. Free memory is still 173.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 08:11:15,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.78ms. Allocated memory is still 226.5MB. Free memory was 184.6MB in the beginning and 173.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 08:11:15,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.16ms. Allocated memory is still 226.5MB. Free memory was 173.1MB in the beginning and 171.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 08:11:15,071 INFO L158 Benchmark]: Boogie Preprocessor took 41.37ms. Allocated memory is still 226.5MB. Free memory was 171.8MB in the beginning and 169.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 08:11:15,071 INFO L158 Benchmark]: RCFGBuilder took 179.08ms. Allocated memory is still 226.5MB. Free memory was 169.9MB in the beginning and 159.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 08:11:15,072 INFO L158 Benchmark]: TraceAbstraction took 1410.06ms. Allocated memory was 226.5MB in the beginning and 310.4MB in the end (delta: 83.9MB). Free memory was 158.8MB in the beginning and 245.1MB in the end (delta: -86.3MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 08:11:15,073 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 226.5MB. Free memory is still 173.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 187.78ms. Allocated memory is still 226.5MB. Free memory was 184.6MB in the beginning and 173.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.16ms. Allocated memory is still 226.5MB. Free memory was 173.1MB in the beginning and 171.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.37ms. Allocated memory is still 226.5MB. Free memory was 171.8MB in the beginning and 169.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 179.08ms. Allocated memory is still 226.5MB. Free memory was 169.9MB in the beginning and 159.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1410.06ms. Allocated memory was 226.5MB in the beginning and 310.4MB in the end (delta: 83.9MB). Free memory was 158.8MB in the beginning and 245.1MB in the end (delta: -86.3MB). There was no memory consumed. 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: 12]: 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 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 29 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 9 PreInvPairs, 15 NumberOfFragments, 52 HoareAnnotationTreeSize, 9 FormulaSimplifications, 39 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FormulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 184 SizeOfPredicates, 5 NumberOfNonLiveVariables, 149 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 6/8 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: 27]: Loop Invariant Derived loop invariant: ((6 * x) == (((3 * (y * y)) + (((y * y) * y) * 2)) + y)) RESULT: Ultimate proved your program to be correct! [2023-12-21 08:11:15,095 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...