/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/fermat2-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 05:06:31,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 05:06:31,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 05:06:31,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 05:06:31,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 05:06:31,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 05:06:31,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 05:06:31,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 05:06:31,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 05:06:31,760 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 05:06:31,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 05:06:31,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 05:06:31,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 05:06:31,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 05:06:31,762 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 05:06:31,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 05:06:31,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 05:06:31,762 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 05:06:31,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 05:06:31,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 05:06:31,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 05:06:31,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 05:06:31,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 05:06:31,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 05:06:31,764 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 05:06:31,764 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 05:06:31,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 05:06:31,764 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 05:06:31,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 05:06:31,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 05:06:31,766 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 05:06:31,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 05:06:31,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:06:31,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 05:06:31,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 05:06:31,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 05:06:31,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 05:06:31,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 05:06:31,766 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 05:06:31,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 05:06:31,767 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 05:06:31,772 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 05:06:31,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 05:06:31,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 05:06:31,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 05:06:31,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 05:06:31,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 05:06:31,994 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 05:06:31,994 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 05:06:31,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound10.c [2023-12-16 05:06:32,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 05:06:33,102 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 05:06:33,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound10.c [2023-12-16 05:06:33,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8065ce3d8/2cf4be686c4d44a5b1915d1486f3c038/FLAGde40f95f2 [2023-12-16 05:06:33,116 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8065ce3d8/2cf4be686c4d44a5b1915d1486f3c038 [2023-12-16 05:06:33,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 05:06:33,118 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 05:06:33,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 05:06:33,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 05:06:33,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 05:06:33,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388b6eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33, skipping insertion in model container [2023-12-16 05:06:33,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,141 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 05:06:33,227 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/fermat2-ll_valuebound10.c[524,537] [2023-12-16 05:06:33,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:06:33,244 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 05:06:33,251 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/fermat2-ll_valuebound10.c[524,537] [2023-12-16 05:06:33,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:06:33,269 INFO L206 MainTranslator]: Completed translation [2023-12-16 05:06:33,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33 WrapperNode [2023-12-16 05:06:33,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 05:06:33,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 05:06:33,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 05:06:33,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 05:06:33,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,317 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-12-16 05:06:33,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 05:06:33,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 05:06:33,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 05:06:33,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 05:06:33,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,350 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]. [2023-12-16 05:06:33,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,352 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 05:06:33,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 05:06:33,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 05:06:33,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 05:06:33,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (1/1) ... [2023-12-16 05:06:33,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:06:33,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:06:33,379 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) [2023-12-16 05:06:33,387 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 [2023-12-16 05:06:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 05:06:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 05:06:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 05:06:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 05:06:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 05:06:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 05:06:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 05:06:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 05:06:33,468 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 05:06:33,469 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 05:06:33,622 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 05:06:33,663 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 05:06:33,664 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 05:06:33,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:06:33 BoogieIcfgContainer [2023-12-16 05:06:33,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 05:06:33,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 05:06:33,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 05:06:33,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 05:06:33,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:06:33" (1/3) ... [2023-12-16 05:06:33,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145c60dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:06:33, skipping insertion in model container [2023-12-16 05:06:33,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:06:33" (2/3) ... [2023-12-16 05:06:33,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145c60dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:06:33, skipping insertion in model container [2023-12-16 05:06:33,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:06:33" (3/3) ... [2023-12-16 05:06:33,684 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound10.c [2023-12-16 05:06:33,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 05:06:33,695 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 05:06:33,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 05:06:33,726 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;@67b447b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 05:06:33,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 05:06:33,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 05:06:33,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 05:06:33,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:06:33,734 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:06:33,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:06:33,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:06:33,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1510333481, now seen corresponding path program 1 times [2023-12-16 05:06:33,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:06:33,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169296736] [2023-12-16 05:06:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:06:33,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:06:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:06:33,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:06:33,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169296736] [2023-12-16 05:06:33,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 05:06:33,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185029248] [2023-12-16 05:06:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:06:33,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:06:33,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:06:33,878 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) [2023-12-16 05:06:33,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 05:06:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:06:33,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 05:06:33,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:06:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 05:06:33,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:06:33,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185029248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:06:33,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:06:33,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 05:06:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575021558] [2023-12-16 05:06:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:06:33,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 05:06:33,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:06:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 05:06:34,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 05:06:34,015 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2023-12-16 05:06:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:06:34,060 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2023-12-16 05:06:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 05:06:34,062 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 [2023-12-16 05:06:34,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:06:34,124 INFO L225 Difference]: With dead ends: 46 [2023-12-16 05:06:34,124 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 05:06:34,127 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 [2023-12-16 05:06:34,131 INFO L413 NwaCegarLoop]: 27 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, 27 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 [2023-12-16 05:06:34,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:06:34,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 05:06:34,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-16 05:06:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 05:06:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2023-12-16 05:06:34,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 28 [2023-12-16 05:06:34,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:06:34,219 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2023-12-16 05:06:34,220 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) [2023-12-16 05:06:34,220 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2023-12-16 05:06:34,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-16 05:06:34,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:06:34,222 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:06:34,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 05:06:34,427 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 [2023-12-16 05:06:34,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:06:34,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:06:34,428 INFO L85 PathProgramCache]: Analyzing trace with hash -369120531, now seen corresponding path program 1 times [2023-12-16 05:06:34,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:06:34,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832019746] [2023-12-16 05:06:34,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:06:34,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:06:34,448 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:06:34,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378644683] [2023-12-16 05:06:34,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:06:34,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:06:34,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:06:34,470 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) [2023-12-16 05:06:34,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 05:06:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:06:34,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 05:06:34,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:06:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 05:06:34,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:06:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 05:06:35,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:06:35,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832019746] [2023-12-16 05:06:35,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 05:06:35,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378644683] [2023-12-16 05:06:35,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378644683] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 05:06:35,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 05:06:35,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-16 05:06:35,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365254588] [2023-12-16 05:06:35,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:06:35,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 05:06:35,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:06:35,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 05:06:35,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-16 05:06:35,348 INFO L87 Difference]: Start difference. First operand 22 states and 27 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) [2023-12-16 05:06:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:06:35,430 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2023-12-16 05:06:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 05:06:35,430 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 [2023-12-16 05:06:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:06:35,431 INFO L225 Difference]: With dead ends: 28 [2023-12-16 05:06:35,431 INFO L226 Difference]: Without dead ends: 24 [2023-12-16 05:06:35,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:06:35,434 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:06:35,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:06:35,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-16 05:06:35,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-16 05:06:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-16 05:06:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-12-16 05:06:35,445 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2023-12-16 05:06:35,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:06:35,446 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-12-16 05:06:35,446 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) [2023-12-16 05:06:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-12-16 05:06:35,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 05:06:35,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:06:35,448 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] [2023-12-16 05:06:35,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 05:06:35,652 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 [2023-12-16 05:06:35,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:06:35,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:06:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1928791027, now seen corresponding path program 1 times [2023-12-16 05:06:35,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:06:35,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071328081] [2023-12-16 05:06:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:06:35,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:06:35,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 05:06:35,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900392323] [2023-12-16 05:06:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:06:35,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:06:35,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:06:35,672 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) [2023-12-16 05:06:35,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 05:06:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:06:35,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 05:06:35,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:06:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 05:06:35,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:06:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 05:06:35,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:06:35,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071328081] [2023-12-16 05:06:35,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 05:06:35,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900392323] [2023-12-16 05:06:35,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900392323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:06:35,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 05:06:35,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-12-16 05:06:35,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411182091] [2023-12-16 05:06:35,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 05:06:35,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 05:06:35,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:06:35,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 05:06:35,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 05:06:35,978 INFO L87 Difference]: Start difference. First operand 24 states and 28 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) [2023-12-16 05:06:36,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:06:36,031 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2023-12-16 05:06:36,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 05:06:36,032 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 [2023-12-16 05:06:36,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:06:36,032 INFO L225 Difference]: With dead ends: 24 [2023-12-16 05:06:36,032 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 05:06:36,033 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 [2023-12-16 05:06:36,035 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:06:36,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:06:36,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 05:06:36,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 05:06:36,038 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) [2023-12-16 05:06:36,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 05:06:36,038 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2023-12-16 05:06:36,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:06:36,038 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 05:06:36,038 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) [2023-12-16 05:06:36,038 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 05:06:36,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 05:06:36,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 05:06:36,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 05:06:36,244 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 [2023-12-16 05:06:36,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 05:06:36,267 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 46) 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))) [2023-12-16 05:06:36,267 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 05:06:36,269 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-12-16 05:06:36,269 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2023-12-16 05:06:36,270 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-12-16 05:06:36,270 INFO L902 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2023-12-16 05:06:36,270 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-12-16 05:06:36,270 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-12-16 05:06:36,270 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 05:06:36,270 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|))) [2023-12-16 05:06:36,270 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 46) no Hoare annotation was computed. [2023-12-16 05:06:36,270 INFO L899 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2023-12-16 05:06:36,270 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 45) no Hoare annotation was computed. [2023-12-16 05:06:36,270 INFO L895 garLoopResultBuilder]: At program point L39-2(lines 35 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|))) [2023-12-16 05:06:36,270 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-12-16 05:06:36,270 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-12-16 05:06:36,270 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2023-12-16 05:06:36,271 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-12-16 05:06:36,271 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-12-16 05:06:36,272 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-12-16 05:06:36,272 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-12-16 05:06:36,272 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-12-16 05:06:36,272 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-12-16 05:06:36,272 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-12-16 05:06:36,275 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-16 05:06:36,276 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 05:06:36,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:06:36 BoogieIcfgContainer [2023-12-16 05:06:36,331 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 05:06:36,331 INFO L158 Benchmark]: Toolchain (without parser) took 3212.92ms. Allocated memory is still 256.9MB. Free memory was 202.8MB in the beginning and 132.0MB in the end (delta: 70.8MB). Peak memory consumption was 71.4MB. Max. memory is 8.0GB. [2023-12-16 05:06:36,332 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 188.7MB. Free memory was 135.1MB in the beginning and 135.0MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 05:06:36,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.17ms. Allocated memory is still 256.9MB. Free memory was 202.8MB in the beginning and 191.7MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 05:06:36,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.32ms. Allocated memory is still 256.9MB. Free memory was 191.7MB in the beginning and 190.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 05:06:36,333 INFO L158 Benchmark]: Boogie Preprocessor took 38.27ms. Allocated memory is still 256.9MB. Free memory was 190.2MB in the beginning and 188.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 05:06:36,333 INFO L158 Benchmark]: RCFGBuilder took 307.68ms. Allocated memory is still 256.9MB. Free memory was 188.7MB in the beginning and 177.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 05:06:36,333 INFO L158 Benchmark]: TraceAbstraction took 2650.99ms. Allocated memory is still 256.9MB. Free memory was 176.6MB in the beginning and 132.0MB in the end (delta: 44.6MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2023-12-16 05:06:36,349 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 188.7MB. Free memory was 135.1MB in the beginning and 135.0MB in the end (delta: 155.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 150.17ms. Allocated memory is still 256.9MB. Free memory was 202.8MB in the beginning and 191.7MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.32ms. Allocated memory is still 256.9MB. Free memory was 191.7MB in the beginning and 190.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.27ms. Allocated memory is still 256.9MB. Free memory was 190.2MB in the beginning and 188.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 307.68ms. Allocated memory is still 256.9MB. Free memory was 188.7MB in the beginning and 177.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2650.99ms. Allocated memory is still 256.9MB. Free memory was 176.6MB in the beginning and 132.0MB in the end (delta: 44.6MB). Peak memory consumption was 45.1MB. 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, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 127 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 63 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 18 PreInvPairs, 24 NumberOfFragments, 88 HoareAnnotationTreeSize, 18 FormulaSimplifications, 5 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 7 NumberOfNonLiveVariables, 242 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 116/124 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))) RESULT: Ultimate proved your program to be correct! [2023-12-16 05:06:36,369 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...