/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/ps6-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 22:32:47,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 22:32:47,165 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 22:32:47,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 22:32:47,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 22:32:47,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 22:32:47,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 22:32:47,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 22:32:47,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 22:32:47,188 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 22:32:47,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 22:32:47,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 22:32:47,189 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 22:32:47,189 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 22:32:47,190 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 22:32:47,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 22:32:47,190 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 22:32:47,191 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 22:32:47,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 22:32:47,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 22:32:47,192 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 22:32:47,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 22:32:47,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 22:32:47,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 22:32:47,193 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 22:32:47,193 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 22:32:47,194 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 22:32:47,194 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 22:32:47,194 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 22:32:47,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 22:32:47,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 22:32:47,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 22:32:47,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:32:47,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 22:32:47,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 22:32:47,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 22:32:47,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 22:32:47,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 22:32:47,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 22:32:47,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 22:32:47,197 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 22:32:47,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 22:32:47,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 22:32:47,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 22:32:47,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 22:32:47,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 22:32:47,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 22:32:47,426 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 22:32:47,426 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 22:32:47,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound20.c [2023-12-15 22:32:48,548 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 22:32:48,703 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 22:32:48,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound20.c [2023-12-15 22:32:48,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96541dd48/a6cb9eb0fec445b39c81561da3715b16/FLAG14299c178 [2023-12-15 22:32:48,720 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96541dd48/a6cb9eb0fec445b39c81561da3715b16 [2023-12-15 22:32:48,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 22:32:48,723 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 22:32:48,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 22:32:48,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 22:32:48,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 22:32:48,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f2c438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48, skipping insertion in model container [2023-12-15 22:32:48,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,745 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 22:32:48,848 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/ps6-ll_unwindbound20.c[458,471] [2023-12-15 22:32:48,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:32:48,871 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 22:32:48,879 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/ps6-ll_unwindbound20.c[458,471] [2023-12-15 22:32:48,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:32:48,894 INFO L206 MainTranslator]: Completed translation [2023-12-15 22:32:48,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48 WrapperNode [2023-12-15 22:32:48,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 22:32:48,896 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 22:32:48,896 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 22:32:48,896 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 22:32:48,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,921 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2023-12-15 22:32:48,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 22:32:48,922 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 22:32:48,922 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 22:32:48,922 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 22:32:48,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,940 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,955 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]. [2023-12-15 22:32:48,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,964 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,971 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 22:32:48,972 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 22:32:48,972 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 22:32:48,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 22:32:48,973 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (1/1) ... [2023-12-15 22:32:48,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:32:48,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:32:49,011 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) [2023-12-15 22:32:49,035 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 [2023-12-15 22:32:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 22:32:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 22:32:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 22:32:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 22:32:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-15 22:32:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-15 22:32:49,100 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 22:32:49,102 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 22:32:49,201 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 22:32:49,221 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 22:32:49,221 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 22:32:49,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:32:49 BoogieIcfgContainer [2023-12-15 22:32:49,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 22:32:49,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 22:32:49,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 22:32:49,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 22:32:49,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:32:48" (1/3) ... [2023-12-15 22:32:49,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb6a015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:32:49, skipping insertion in model container [2023-12-15 22:32:49,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:32:48" (2/3) ... [2023-12-15 22:32:49,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb6a015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:32:49, skipping insertion in model container [2023-12-15 22:32:49,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:32:49" (3/3) ... [2023-12-15 22:32:49,235 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound20.c [2023-12-15 22:32:49,249 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 22:32:49,249 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 22:32:49,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 22:32:49,288 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;@57f046ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 22:32:49,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 22:32:49,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 22:32:49,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-15 22:32:49,295 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:32:49,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:32:49,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:32:49,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:32:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash 793793432, now seen corresponding path program 1 times [2023-12-15 22:32:49,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:32:49,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477254272] [2023-12-15 22:32:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:49,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:32:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:32:49,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:32:49,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477254272] [2023-12-15 22:32:49,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 22:32:49,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714387416] [2023-12-15 22:32:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:49,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:32:49,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:32:49,441 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) [2023-12-15 22:32:49,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 22:32:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:32:49,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 22:32:49,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:32:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:32:49,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:32:49,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714387416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:32:49,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:32:49,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 22:32:49,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800492994] [2023-12-15 22:32:49,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:32:49,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 22:32:49,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:32:49,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 22:32:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 22:32:49,567 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 22:32:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:32:49,595 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2023-12-15 22:32:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 22:32:49,597 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-15 22:32:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:32:49,603 INFO L225 Difference]: With dead ends: 32 [2023-12-15 22:32:49,603 INFO L226 Difference]: Without dead ends: 15 [2023-12-15 22:32:49,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 22:32:49,610 INFO L413 NwaCegarLoop]: 18 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, 18 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 [2023-12-15 22:32:49,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:32:49,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-15 22:32:49,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-15 22:32:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 22:32:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2023-12-15 22:32:49,640 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2023-12-15 22:32:49,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:32:49,640 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2023-12-15 22:32:49,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 22:32:49,640 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-12-15 22:32:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-15 22:32:49,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:32:49,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:32:49,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 22:32:49,846 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 [2023-12-15 22:32:49,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:32:49,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:32:49,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1922989550, now seen corresponding path program 1 times [2023-12-15 22:32:49,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:32:49,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049156816] [2023-12-15 22:32:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:32:49,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:32:49,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273502971] [2023-12-15 22:32:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:49,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:32:49,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:32:49,874 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) [2023-12-15 22:32:49,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 22:32:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:32:49,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:32:49,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:32:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:32:50,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:32:50,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:32:50,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049156816] [2023-12-15 22:32:50,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:32:50,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273502971] [2023-12-15 22:32:50,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273502971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:32:50,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:32:50,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 22:32:50,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97984962] [2023-12-15 22:32:50,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:32:50,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 22:32:50,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:32:50,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 22:32:50,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 22:32:50,003 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 22:32:50,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:32:50,017 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2023-12-15 22:32:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 22:32:50,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-15 22:32:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:32:50,018 INFO L225 Difference]: With dead ends: 25 [2023-12-15 22:32:50,019 INFO L226 Difference]: Without dead ends: 17 [2023-12-15 22:32:50,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 22:32:50,020 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:32:50,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:32:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-15 22:32:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-15 22:32:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 22:32:50,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-12-15 22:32:50,025 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2023-12-15 22:32:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:32:50,025 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-12-15 22:32:50,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 22:32:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-12-15 22:32:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-15 22:32:50,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:32:50,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:32:50,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 22:32:50,231 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 [2023-12-15 22:32:50,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:32:50,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:32:50,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1924777010, now seen corresponding path program 1 times [2023-12-15 22:32:50,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:32:50,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090103860] [2023-12-15 22:32:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:50,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:32:50,273 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:32:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885898198] [2023-12-15 22:32:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:50,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:32:50,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:32:50,277 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) [2023-12-15 22:32:50,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 22:32:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:32:50,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 22:32:50,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:32:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:32:50,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:32:50,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:32:50,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090103860] [2023-12-15 22:32:50,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:32:50,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885898198] [2023-12-15 22:32:50,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885898198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:32:50,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:32:50,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 22:32:50,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633859660] [2023-12-15 22:32:50,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:32:50,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 22:32:50,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:32:50,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 22:32:50,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 22:32:50,398 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 22:32:50,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:32:50,456 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2023-12-15 22:32:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:32:50,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-15 22:32:50,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:32:50,457 INFO L225 Difference]: With dead ends: 27 [2023-12-15 22:32:50,458 INFO L226 Difference]: Without dead ends: 23 [2023-12-15 22:32:50,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 22:32:50,459 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:32:50,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 52 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:32:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-15 22:32:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-15 22:32:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2023-12-15 22:32:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-12-15 22:32:50,466 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 9 [2023-12-15 22:32:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:32:50,466 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-12-15 22:32:50,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 22:32:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-12-15 22:32:50,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-15 22:32:50,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:32:50,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:32:50,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 22:32:50,672 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 [2023-12-15 22:32:50,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:32:50,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:32:50,674 INFO L85 PathProgramCache]: Analyzing trace with hash 76913492, now seen corresponding path program 1 times [2023-12-15 22:32:50,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:32:50,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592593917] [2023-12-15 22:32:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:50,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:32:50,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:32:50,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898046885] [2023-12-15 22:32:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:50,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:32:50,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:32:50,695 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) [2023-12-15 22:32:50,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 22:32:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:32:50,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 22:32:50,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:32:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:32:50,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:32:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:32:50,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:32:50,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592593917] [2023-12-15 22:32:50,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:32:50,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898046885] [2023-12-15 22:32:50,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898046885] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:32:50,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 22:32:50,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-12-15 22:32:50,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326113371] [2023-12-15 22:32:50,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 22:32:50,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 22:32:50,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:32:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 22:32:50,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-15 22:32:50,809 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 22:32:51,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:32:51,268 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2023-12-15 22:32:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 22:32:51,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-12-15 22:32:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:32:51,270 INFO L225 Difference]: With dead ends: 57 [2023-12-15 22:32:51,270 INFO L226 Difference]: Without dead ends: 49 [2023-12-15 22:32:51,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:32:51,271 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 22:32:51,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 22:32:51,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-15 22:32:51,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2023-12-15 22:32:51,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-15 22:32:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2023-12-15 22:32:51,280 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 17 [2023-12-15 22:32:51,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:32:51,280 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2023-12-15 22:32:51,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 22:32:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2023-12-15 22:32:51,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-15 22:32:51,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:32:51,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:32:51,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 22:32:51,487 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 [2023-12-15 22:32:51,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:32:51,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:32:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash 78700952, now seen corresponding path program 1 times [2023-12-15 22:32:51,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:32:51,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796492515] [2023-12-15 22:32:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:51,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:32:51,498 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:32:51,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996107169] [2023-12-15 22:32:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:51,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:32:51,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:32:51,499 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) [2023-12-15 22:32:51,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 22:32:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:32:51,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 22:32:51,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:32:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 22:32:51,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:32:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 22:32:51,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:32:51,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796492515] [2023-12-15 22:32:51,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 22:32:51,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996107169] [2023-12-15 22:32:51,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996107169] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 22:32:51,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:32:51,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-12-15 22:32:51,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557034987] [2023-12-15 22:32:51,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:32:51,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 22:32:51,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:32:51,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 22:32:51,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:32:51,725 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 22:32:51,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:32:51,782 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2023-12-15 22:32:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 22:32:51,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-12-15 22:32:51,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:32:51,786 INFO L225 Difference]: With dead ends: 59 [2023-12-15 22:32:51,786 INFO L226 Difference]: Without dead ends: 51 [2023-12-15 22:32:51,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-15 22:32:51,788 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:32:51,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 39 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:32:51,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-15 22:32:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2023-12-15 22:32:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.125) internal successors, (36), 34 states have internal predecessors, (36), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-15 22:32:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2023-12-15 22:32:51,822 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 17 [2023-12-15 22:32:51,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:32:51,823 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2023-12-15 22:32:51,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 22:32:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2023-12-15 22:32:51,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 22:32:51,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:32:51,824 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:32:51,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 22:32:52,029 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 [2023-12-15 22:32:52,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:32:52,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:32:52,030 INFO L85 PathProgramCache]: Analyzing trace with hash 731759343, now seen corresponding path program 1 times [2023-12-15 22:32:52,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:32:52,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683178724] [2023-12-15 22:32:52,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:52,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:32:52,044 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 22:32:52,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046487373] [2023-12-15 22:32:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:32:52,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:32:52,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:32:52,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 22:32:52,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 22:32:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:32:52,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 22:32:52,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:32:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 22:32:52,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:33:00,300 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) .cse0) (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 7) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))))) is different from false [2023-12-15 22:33:08,401 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-15 22:33:16,409 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-15 22:33:28,441 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-15 22:33:35,681 WARN L293 SmtUtils]: Spent 7.24s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-15 22:33:39,691 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|))) (or (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) .cse0) (= (mod (+ (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 10 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) .cse0 (* 7 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) 12) 0))))) is different from true [2023-12-15 22:33:51,734 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-15 22:34:07,758 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-15 22:34:09,074 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 22:34:09,074 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 22:34:10,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 22:34:10,276 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 22:34:10,280 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 137 [2023-12-15 22:34:10,282 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 22:34:10,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 22:34:10,283 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 29 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-15 22:34:10,287 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-15 22:34:10,289 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 22:34:10,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:34:10 BoogieIcfgContainer [2023-12-15 22:34:10,291 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 22:34:10,291 INFO L158 Benchmark]: Toolchain (without parser) took 81568.25ms. Allocated memory was 237.0MB in the beginning and 309.3MB in the end (delta: 72.4MB). Free memory was 201.1MB in the beginning and 253.1MB in the end (delta: -52.0MB). Peak memory consumption was 21.9MB. Max. memory is 8.0GB. [2023-12-15 22:34:10,292 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 237.0MB. Free memory is still 194.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 22:34:10,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.92ms. Allocated memory is still 237.0MB. Free memory was 200.7MB in the beginning and 189.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 22:34:10,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.18ms. Allocated memory is still 237.0MB. Free memory was 189.6MB in the beginning and 188.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 22:34:10,292 INFO L158 Benchmark]: Boogie Preprocessor took 49.39ms. Allocated memory is still 237.0MB. Free memory was 188.2MB in the beginning and 186.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-15 22:34:10,293 INFO L158 Benchmark]: RCFGBuilder took 249.73ms. Allocated memory is still 237.0MB. Free memory was 186.4MB in the beginning and 175.2MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 22:34:10,293 INFO L158 Benchmark]: TraceAbstraction took 81067.11ms. Allocated memory was 237.0MB in the beginning and 309.3MB in the end (delta: 72.4MB). Free memory was 174.5MB in the beginning and 253.1MB in the end (delta: -78.6MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 22:34:10,294 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 237.0MB. Free memory is still 194.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 170.92ms. Allocated memory is still 237.0MB. Free memory was 200.7MB in the beginning and 189.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.18ms. Allocated memory is still 237.0MB. Free memory was 189.6MB in the beginning and 188.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.39ms. Allocated memory is still 237.0MB. Free memory was 188.2MB in the beginning and 186.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 249.73ms. Allocated memory is still 237.0MB. Free memory was 186.4MB in the beginning and 175.2MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 81067.11ms. Allocated memory was 237.0MB in the beginning and 309.3MB in the end (delta: 72.4MB). Free memory was 174.5MB in the beginning and 253.1MB in the end (delta: -78.6MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 12). Cancelled while NwaCegarLoop was analyzing trace of length 29 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 81.0s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 154 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 74 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 27, 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, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 439 SizeOfPredicates, 6 NumberOfNonLiveVariables, 288 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 11/18 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown