/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 19:07:32,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 19:07:32,660 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 19:07:32,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 19:07:32,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 19:07:32,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 19:07:32,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 19:07:32,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 19:07:32,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 19:07:32,688 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 19:07:32,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 19:07:32,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 19:07:32,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 19:07:32,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 19:07:32,689 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 19:07:32,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 19:07:32,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 19:07:32,690 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 19:07:32,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 19:07:32,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 19:07:32,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 19:07:32,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 19:07:32,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 19:07:32,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 19:07:32,693 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 19:07:32,694 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 19:07:32,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 19:07:32,694 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 19:07:32,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 19:07:32,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 19:07:32,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 19:07:32,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 19:07:32,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 19:07:32,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 19:07:32,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 19:07:32,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 19:07:32,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 19:07:32,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 19:07:32,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 19:07:32,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 19:07:32,696 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 19:07:32,698 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 19:07:32,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 19:07:32,698 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 19:07:32,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 19:07:32,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 19:07:32,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 19:07:32,874 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 19:07:32,884 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 19:07:32,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound1.c [2023-12-19 19:07:33,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 19:07:33,938 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 19:07:33,938 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound1.c [2023-12-19 19:07:33,943 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbbabcf6/c9a449e5179a4db7969aeed12aa1dd17/FLAGe99bccc4d [2023-12-19 19:07:33,951 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bbbabcf6/c9a449e5179a4db7969aeed12aa1dd17 [2023-12-19 19:07:33,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 19:07:33,954 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 19:07:33,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 19:07:33,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 19:07:33,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 19:07:33,960 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:07:33" (1/1) ... [2023-12-19 19:07:33,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85f90eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:33, skipping insertion in model container [2023-12-19 19:07:33,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:07:33" (1/1) ... [2023-12-19 19:07:33,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 19:07:34,065 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/bresenham-ll_valuebound1.c[597,610] [2023-12-19 19:07:34,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 19:07:34,081 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 19:07:34,088 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/bresenham-ll_valuebound1.c[597,610] [2023-12-19 19:07:34,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 19:07:34,100 INFO L206 MainTranslator]: Completed translation [2023-12-19 19:07:34,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34 WrapperNode [2023-12-19 19:07:34,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 19:07:34,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 19:07:34,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 19:07:34,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 19:07:34,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,126 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2023-12-19 19:07:34,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 19:07:34,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 19:07:34,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 19:07:34,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 19:07:34,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,140 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 19:07:34,140 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,140 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,144 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 19:07:34,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 19:07:34,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 19:07:34,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 19:07:34,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (1/1) ... [2023-12-19 19:07:34,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 19:07:34,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:07:34,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 19:07:34,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 19:07:34,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 19:07:34,187 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 19:07:34,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 19:07:34,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 19:07:34,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 19:07:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 19:07:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-19 19:07:34,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-19 19:07:34,253 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 19:07:34,254 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 19:07:34,382 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 19:07:34,395 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 19:07:34,395 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 19:07:34,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:07:34 BoogieIcfgContainer [2023-12-19 19:07:34,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 19:07:34,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 19:07:34,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 19:07:34,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 19:07:34,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:07:33" (1/3) ... [2023-12-19 19:07:34,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7cf85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:07:34, skipping insertion in model container [2023-12-19 19:07:34,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:07:34" (2/3) ... [2023-12-19 19:07:34,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7cf85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:07:34, skipping insertion in model container [2023-12-19 19:07:34,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:07:34" (3/3) ... [2023-12-19 19:07:34,401 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound1.c [2023-12-19 19:07:34,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 19:07:34,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 19:07:34,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 19:07:34,443 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;@356d505c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 19:07:34,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 19:07:34,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 19:07:34,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 19:07:34,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:07:34,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:07:34,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:07:34,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:07:34,455 INFO L85 PathProgramCache]: Analyzing trace with hash 866122637, now seen corresponding path program 1 times [2023-12-19 19:07:34,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:07:34,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675899188] [2023-12-19 19:07:34,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:07:34,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:07:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:07:34,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:07:34,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675899188] [2023-12-19 19:07:34,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 19:07:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100088921] [2023-12-19 19:07:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:07:34,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:07:34,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:07:34,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 19:07:34,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 19:07:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:07:34,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 19:07:34,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:07:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 19:07:34,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 19:07:34,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100088921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 19:07:34,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 19:07:34,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 19:07:34,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585700658] [2023-12-19 19:07:34,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 19:07:34,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 19:07:34,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:07:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 19:07:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 19:07:34,673 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 19:07:34,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:07:34,693 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2023-12-19 19:07:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 19:07:34,695 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-12-19 19:07:34,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:07:34,702 INFO L225 Difference]: With dead ends: 46 [2023-12-19 19:07:34,702 INFO L226 Difference]: Without dead ends: 22 [2023-12-19 19:07:34,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 19:07:34,706 INFO L413 NwaCegarLoop]: 25 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, 25 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 19:07:34,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 19:07:34,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-19 19:07:34,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-19 19:07:34,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 19:07:34,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-12-19 19:07:34,732 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 18 [2023-12-19 19:07:34,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:07:34,733 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-12-19 19:07:34,733 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 19:07:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-12-19 19:07:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 19:07:34,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:07:34,734 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:07:34,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 19:07:34,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 19:07:34,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:07:34,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:07:34,939 INFO L85 PathProgramCache]: Analyzing trace with hash 266317329, now seen corresponding path program 1 times [2023-12-19 19:07:34,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:07:34,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889021416] [2023-12-19 19:07:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:07:34,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:07:34,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:07:34,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213003911] [2023-12-19 19:07:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:07:34,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:07:34,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:07:34,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 19:07:34,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 19:07:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:07:34,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 19:07:35,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:07:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 19:07:35,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 19:07:35,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:07:35,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889021416] [2023-12-19 19:07:35,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:07:35,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213003911] [2023-12-19 19:07:35,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213003911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 19:07:35,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 19:07:35,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 19:07:35,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640246937] [2023-12-19 19:07:35,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 19:07:35,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 19:07:35,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:07:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 19:07:35,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 19:07:35,075 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 19:07:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:07:35,175 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-12-19 19:07:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 19:07:35,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-19 19:07:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:07:35,177 INFO L225 Difference]: With dead ends: 34 [2023-12-19 19:07:35,177 INFO L226 Difference]: Without dead ends: 30 [2023-12-19 19:07:35,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 19:07:35,181 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 19:07:35,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 70 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 19:07:35,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-19 19:07:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2023-12-19 19:07:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 19:07:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-12-19 19:07:35,194 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2023-12-19 19:07:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:07:35,195 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-12-19 19:07:35,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 19:07:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-12-19 19:07:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-19 19:07:35,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:07:35,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:07:35,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 19:07:35,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 19:07:35,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:07:35,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:07:35,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1056709002, now seen corresponding path program 1 times [2023-12-19 19:07:35,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:07:35,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222262061] [2023-12-19 19:07:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:07:35,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:07:35,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:07:35,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111328754] [2023-12-19 19:07:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:07:35,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:07:35,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:07:35,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 19:07:35,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 19:07:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:07:35,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 19:07:35,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:07:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 19:07:35,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 19:07:35,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:07:35,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222262061] [2023-12-19 19:07:35,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:07:35,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111328754] [2023-12-19 19:07:35,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111328754] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 19:07:35,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 19:07:35,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-19 19:07:35,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171100975] [2023-12-19 19:07:35,968 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 19:07:35,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 19:07:35,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:07:35,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 19:07:35,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=254, Unknown=1, NotChecked=0, Total=306 [2023-12-19 19:07:35,971 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 19:07:36,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:07:36,172 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2023-12-19 19:07:36,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 19:07:36,172 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2023-12-19 19:07:36,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:07:36,173 INFO L225 Difference]: With dead ends: 56 [2023-12-19 19:07:36,173 INFO L226 Difference]: Without dead ends: 30 [2023-12-19 19:07:36,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=382, Unknown=1, NotChecked=0, Total=462 [2023-12-19 19:07:36,174 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 19:07:36,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 95 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 19:07:36,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-19 19:07:36,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-19 19:07:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-19 19:07:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-12-19 19:07:36,178 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 27 [2023-12-19 19:07:36,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:07:36,178 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-12-19 19:07:36,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 19:07:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-12-19 19:07:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-19 19:07:36,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:07:36,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:07:36,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 19:07:36,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:07:36,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:07:36,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:07:36,387 INFO L85 PathProgramCache]: Analyzing trace with hash 718298360, now seen corresponding path program 1 times [2023-12-19 19:07:36,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:07:36,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011040161] [2023-12-19 19:07:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:07:36,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:07:36,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:07:36,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974372141] [2023-12-19 19:07:36,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:07:36,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:07:36,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:07:36,398 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 19:07:36,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 19:07:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:07:36,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-19 19:07:36,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:07:36,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 19:07:36,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 19:07:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 19:07:36,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:07:36,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011040161] [2023-12-19 19:07:36,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:07:36,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974372141] [2023-12-19 19:07:36,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974372141] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 19:07:36,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 19:07:36,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-12-19 19:07:36,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394967759] [2023-12-19 19:07:36,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 19:07:36,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-19 19:07:36,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:07:36,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-19 19:07:36,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2023-12-19 19:07:36,797 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-19 19:07:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:07:37,009 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2023-12-19 19:07:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 19:07:37,010 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 27 [2023-12-19 19:07:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:07:37,010 INFO L225 Difference]: With dead ends: 54 [2023-12-19 19:07:37,010 INFO L226 Difference]: Without dead ends: 39 [2023-12-19 19:07:37,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2023-12-19 19:07:37,011 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 19:07:37,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 104 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 19:07:37,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-19 19:07:37,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2023-12-19 19:07:37,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-19 19:07:37,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2023-12-19 19:07:37,034 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 27 [2023-12-19 19:07:37,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:07:37,035 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2023-12-19 19:07:37,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-19 19:07:37,035 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2023-12-19 19:07:37,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-19 19:07:37,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:07:37,036 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:07:37,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 19:07:37,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:07:37,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:07:37,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:07:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2017352516, now seen corresponding path program 1 times [2023-12-19 19:07:37,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:07:37,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261662205] [2023-12-19 19:07:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:07:37,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:07:37,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:07:37,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115291753] [2023-12-19 19:07:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:07:37,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:07:37,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:07:37,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 19:07:37,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 19:07:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:07:37,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-19 19:07:37,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:07:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 19:07:37,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 19:07:37,717 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 19:07:37,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:07:37,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261662205] [2023-12-19 19:07:37,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:07:37,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115291753] [2023-12-19 19:07:37,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115291753] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 19:07:37,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 19:07:37,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2023-12-19 19:07:37,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341086029] [2023-12-19 19:07:37,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 19:07:37,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 19:07:37,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:07:37,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 19:07:37,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-12-19 19:07:37,719 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 22 states have internal predecessors, (38), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-19 19:07:38,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:07:38,395 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-12-19 19:07:38,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 19:07:38,395 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 22 states have internal predecessors, (38), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 34 [2023-12-19 19:07:38,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:07:38,395 INFO L225 Difference]: With dead ends: 39 [2023-12-19 19:07:38,395 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 19:07:38,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=253, Invalid=1307, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 19:07:38,397 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 49 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 19:07:38,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 92 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 19:07:38,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 19:07:38,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 19:07:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 19:07:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 19:07:38,398 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2023-12-19 19:07:38,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:07:38,398 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 19:07:38,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 22 states have internal predecessors, (38), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-19 19:07:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 19:07:38,398 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 19:07:38,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 19:07:38,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 19:07:38,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:07:38,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 19:07:38,888 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 19:07:38,888 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~X~0#1| 1) (<= 0 |ULTIMATE.start_main_~X~0#1|)) [2023-12-19 19:07:38,888 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-12-19 19:07:38,888 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-12-19 19:07:38,888 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-12-19 19:07:38,888 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse1 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (or (let ((.cse0 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2))) (and (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ .cse0 (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse1)) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ .cse2 .cse1)) (<= |ULTIMATE.start_main_~Y~0#1| 1) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 1) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ .cse0 .cse2 .cse1)) (<= 0 |ULTIMATE.start_main_~X~0#1|))) (and (= |ULTIMATE.start_main_~xy~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) (= .cse1 (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~yx~0#1| 0)))) [2023-12-19 19:07:38,888 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= (+ (* .cse0 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= |ULTIMATE.start_main_~Y~0#1| 1) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 1) (<= 0 |ULTIMATE.start_main_~X~0#1|) (or (= (+ .cse0 |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~X~0#1| 1))))) [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (.cse0 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= (+ (* .cse0 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2) .cse1)) (<= |ULTIMATE.start_main_~Y~0#1| 1) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse1)) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 1) (<= 0 |ULTIMATE.start_main_~X~0#1|) (or (= (+ .cse0 |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (< |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~X~0#1| 1))))) [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 12) the Hoare annotation is: true [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2023-12-19 19:07:38,889 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 19) the Hoare annotation is: true [2023-12-19 19:07:38,890 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-12-19 19:07:38,891 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-19 19:07:38,893 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 19:07:38,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 07:07:38 BoogieIcfgContainer [2023-12-19 19:07:38,919 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 19:07:38,919 INFO L158 Benchmark]: Toolchain (without parser) took 4965.73ms. Allocated memory was 224.4MB in the beginning and 290.5MB in the end (delta: 66.1MB). Free memory was 161.5MB in the beginning and 255.8MB in the end (delta: -94.3MB). Peak memory consumption was 124.8MB. Max. memory is 8.0GB. [2023-12-19 19:07:38,919 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 224.4MB. Free memory is still 173.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 19:07:38,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 145.06ms. Allocated memory is still 224.4MB. Free memory was 161.3MB in the beginning and 150.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 19:07:38,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.74ms. Allocated memory is still 224.4MB. Free memory was 150.1MB in the beginning and 148.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 19:07:38,920 INFO L158 Benchmark]: Boogie Preprocessor took 19.61ms. Allocated memory is still 224.4MB. Free memory was 148.4MB in the beginning and 146.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 19:07:38,920 INFO L158 Benchmark]: RCFGBuilder took 248.99ms. Allocated memory was 224.4MB in the beginning and 290.5MB in the end (delta: 66.1MB). Free memory was 146.8MB in the beginning and 250.9MB in the end (delta: -104.1MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2023-12-19 19:07:38,920 INFO L158 Benchmark]: TraceAbstraction took 4521.97ms. Allocated memory is still 290.5MB. Free memory was 249.9MB in the beginning and 255.8MB in the end (delta: -6.0MB). Peak memory consumption was 146.1MB. Max. memory is 8.0GB. [2023-12-19 19:07:38,921 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 224.4MB. Free memory is still 173.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 145.06ms. Allocated memory is still 224.4MB. Free memory was 161.3MB in the beginning and 150.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.74ms. Allocated memory is still 224.4MB. Free memory was 150.1MB in the beginning and 148.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.61ms. Allocated memory is still 224.4MB. Free memory was 148.4MB in the beginning and 146.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 248.99ms. Allocated memory was 224.4MB in the beginning and 290.5MB in the end (delta: 66.1MB). Free memory was 146.8MB in the beginning and 250.9MB in the end (delta: -104.1MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * TraceAbstraction took 4521.97ms. Allocated memory is still 290.5MB. Free memory was 249.9MB in the beginning and 255.8MB in the end (delta: -6.0MB). Peak memory consumption was 146.1MB. 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: 16]: 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: 4.5s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 137 mSDsluCounter, 386 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 311 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 640 IncrementalHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 75 mSDtfsCounter, 640 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 62, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 22 PreInvPairs, 36 NumberOfFragments, 206 HoareAnnotationTreeSize, 22 FormulaSimplifications, 75 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FormulaSimplificationsInter, 370 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 178 ConstructedInterpolants, 1 QuantifiedInterpolants, 1128 SizeOfPredicates, 23 NumberOfNonLiveVariables, 385 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 49/62 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: 32]: Loop Invariant Derived loop invariant: ((((((((((X * y) * 2) + X) + v) == (((Y * x) * 2) + (2 * Y))) && (Y <= 1)) && (0 <= Y)) && (X <= 1)) && (0 <= X)) && ((((X * y) + y) == (x * y)) || (x < (X + 1)))) RESULT: Ultimate proved your program to be correct! [2023-12-19 19:07:38,963 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...