/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/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 10:45:00,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 10:45:00,270 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 10:45:00,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 10:45:00,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 10:45:00,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 10:45:00,292 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 10:45:00,292 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 10:45:00,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 10:45:00,292 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 10:45:00,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 10:45:00,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 10:45:00,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 10:45:00,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 10:45:00,294 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 10:45:00,294 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 10:45:00,294 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 10:45:00,294 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 10:45:00,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 10:45:00,295 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 10:45:00,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 10:45:00,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 10:45:00,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 10:45:00,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 10:45:00,301 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 10:45:00,301 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 10:45:00,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 10:45:00,302 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 10:45:00,302 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 10:45:00,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 10:45:00,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 10:45:00,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 10:45:00,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 10:45:00,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 10:45:00,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 10:45:00,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 10:45:00,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 10:45:00,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 10:45:00,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 10:45:00,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 10:45:00,304 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 10:45:00,309 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 10:45:00,309 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 10:45:00,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 10:45:00,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 10:45:00,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 10:45:00,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 10:45:00,530 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 10:45:00,531 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 10:45:00,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-2.i [2023-12-19 10:45:01,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 10:45:01,948 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 10:45:01,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-2.i [2023-12-19 10:45:01,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a02639c6/c299f718baa143028f22d4e35abfa6c3/FLAGf9fd5dfc6 [2023-12-19 10:45:01,968 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a02639c6/c299f718baa143028f22d4e35abfa6c3 [2023-12-19 10:45:01,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 10:45:01,971 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 10:45:01,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 10:45:01,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 10:45:01,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 10:45:01,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:45:01" (1/1) ... [2023-12-19 10:45:01,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b6ff4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:01, skipping insertion in model container [2023-12-19 10:45:01,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:45:01" (1/1) ... [2023-12-19 10:45:02,002 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 10:45:02,097 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-2.i[915,928] [2023-12-19 10:45:02,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 10:45:02,138 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 10:45:02,146 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-2.i[915,928] [2023-12-19 10:45:02,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 10:45:02,175 INFO L206 MainTranslator]: Completed translation [2023-12-19 10:45:02,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02 WrapperNode [2023-12-19 10:45:02,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 10:45:02,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 10:45:02,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 10:45:02,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 10:45:02,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,221 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2023-12-19 10:45:02,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 10:45:02,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 10:45:02,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 10:45:02,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 10:45:02,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,251 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 10:45:02,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,271 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 10:45:02,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 10:45:02,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 10:45:02,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 10:45:02,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (1/1) ... [2023-12-19 10:45:02,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 10:45:02,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:02,321 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 10:45:02,342 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 10:45:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 10:45:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 10:45:02,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 10:45:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 10:45:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 10:45:02,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 10:45:02,409 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 10:45:02,411 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 10:45:02,626 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 10:45:02,655 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 10:45:02,656 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 10:45:02,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:45:02 BoogieIcfgContainer [2023-12-19 10:45:02,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 10:45:02,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 10:45:02,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 10:45:02,668 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 10:45:02,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:45:01" (1/3) ... [2023-12-19 10:45:02,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464a71cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:45:02, skipping insertion in model container [2023-12-19 10:45:02,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:45:02" (2/3) ... [2023-12-19 10:45:02,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464a71cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:45:02, skipping insertion in model container [2023-12-19 10:45:02,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:45:02" (3/3) ... [2023-12-19 10:45:02,670 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-2.i [2023-12-19 10:45:02,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 10:45:02,683 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 10:45:02,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 10:45:02,728 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;@79ab0810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 10:45:02,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 10:45:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 30 states have (on average 1.5) internal successors, (45), 31 states have internal predecessors, (45), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 10:45:02,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 10:45:02,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:02,744 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:02,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:02,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash 556719095, now seen corresponding path program 1 times [2023-12-19 10:45:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:02,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418915725] [2023-12-19 10:45:02,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:02,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:02,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:02,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418915725] [2023-12-19 10:45:02,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 10:45:02,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674654537] [2023-12-19 10:45:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:02,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:02,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:02,892 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 10:45:02,894 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 10:45:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:02,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 10:45:03,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-12-19 10:45:03,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:03,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674654537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:03,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:03,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 10:45:03,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606509613] [2023-12-19 10:45:03,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:03,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 10:45:03,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:03,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 10:45:03,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 10:45:03,089 INFO L87 Difference]: Start difference. First operand has 47 states, 30 states have (on average 1.5) internal successors, (45), 31 states have internal predecessors, (45), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 10:45:03,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:03,135 INFO L93 Difference]: Finished difference Result 91 states and 158 transitions. [2023-12-19 10:45:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 10:45:03,151 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2023-12-19 10:45:03,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:03,175 INFO L225 Difference]: With dead ends: 91 [2023-12-19 10:45:03,175 INFO L226 Difference]: Without dead ends: 45 [2023-12-19 10:45:03,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 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 10:45:03,211 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:03,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 10:45:03,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-19 10:45:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-19 10:45:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 10:45:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 66 transitions. [2023-12-19 10:45:03,314 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 66 transitions. Word has length 87 [2023-12-19 10:45:03,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:03,315 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 66 transitions. [2023-12-19 10:45:03,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 10:45:03,316 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 66 transitions. [2023-12-19 10:45:03,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 10:45:03,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:03,321 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:03,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 10:45:03,524 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 10:45:03,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:03,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:03,526 INFO L85 PathProgramCache]: Analyzing trace with hash 556534455, now seen corresponding path program 1 times [2023-12-19 10:45:03,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:03,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317621299] [2023-12-19 10:45:03,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:03,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:03,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:03,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591531167] [2023-12-19 10:45:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:03,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:03,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:03,571 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 10:45:03,608 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 10:45:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:03,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 10:45:03,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:05,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:05,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:05,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317621299] [2023-12-19 10:45:05,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:05,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591531167] [2023-12-19 10:45:05,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591531167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:05,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:05,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 10:45:05,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635467462] [2023-12-19 10:45:05,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:05,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 10:45:05,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 10:45:05,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 10:45:05,051 INFO L87 Difference]: Start difference. First operand 45 states and 66 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:05,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:05,195 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2023-12-19 10:45:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 10:45:05,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 87 [2023-12-19 10:45:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:05,199 INFO L225 Difference]: With dead ends: 107 [2023-12-19 10:45:05,199 INFO L226 Difference]: Without dead ends: 63 [2023-12-19 10:45:05,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 10:45:05,201 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 30 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:05,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 136 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 10:45:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-19 10:45:05,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2023-12-19 10:45:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 37 states have internal predecessors, (51), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 10:45:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2023-12-19 10:45:05,219 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 87 [2023-12-19 10:45:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:05,220 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2023-12-19 10:45:05,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:05,220 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2023-12-19 10:45:05,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 10:45:05,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:05,222 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:05,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 10:45:05,428 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 10:45:05,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:05,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash -252812171, now seen corresponding path program 1 times [2023-12-19 10:45:05,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:05,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631580434] [2023-12-19 10:45:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:05,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:05,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884813453] [2023-12-19 10:45:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:05,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:05,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:05,463 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 10:45:05,496 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 10:45:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:05,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 10:45:05,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:05,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:05,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:05,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631580434] [2023-12-19 10:45:05,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:05,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884813453] [2023-12-19 10:45:05,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884813453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:05,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:05,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 10:45:05,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079721104] [2023-12-19 10:45:05,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:05,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 10:45:05,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:05,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 10:45:05,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 10:45:05,629 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:05,669 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2023-12-19 10:45:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 10:45:05,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 87 [2023-12-19 10:45:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:05,672 INFO L225 Difference]: With dead ends: 115 [2023-12-19 10:45:05,673 INFO L226 Difference]: Without dead ends: 63 [2023-12-19 10:45:05,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 10:45:05,677 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 25 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:05,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 211 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 10:45:05,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-19 10:45:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 45. [2023-12-19 10:45:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 10:45:05,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2023-12-19 10:45:05,687 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 87 [2023-12-19 10:45:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:05,689 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2023-12-19 10:45:05,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2023-12-19 10:45:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 10:45:05,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:05,693 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:05,699 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 10:45:05,898 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 10:45:05,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:05,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:05,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1733511397, now seen corresponding path program 1 times [2023-12-19 10:45:05,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:05,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865132971] [2023-12-19 10:45:05,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:05,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:05,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693886701] [2023-12-19 10:45:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:05,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:05,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:05,923 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 10:45:05,948 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 10:45:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:05,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 10:45:05,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:06,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:06,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:06,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865132971] [2023-12-19 10:45:06,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:06,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693886701] [2023-12-19 10:45:06,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693886701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:06,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:06,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 10:45:06,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488525814] [2023-12-19 10:45:06,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:06,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 10:45:06,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:06,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 10:45:06,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-19 10:45:06,143 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:06,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:06,279 INFO L93 Difference]: Finished difference Result 91 states and 117 transitions. [2023-12-19 10:45:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 10:45:06,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 89 [2023-12-19 10:45:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:06,282 INFO L225 Difference]: With dead ends: 91 [2023-12-19 10:45:06,282 INFO L226 Difference]: Without dead ends: 89 [2023-12-19 10:45:06,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 10:45:06,285 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 46 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:06,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 256 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 10:45:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-19 10:45:06,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2023-12-19 10:45:06,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.26) internal successors, (63), 51 states have internal predecessors, (63), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-19 10:45:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2023-12-19 10:45:06,300 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 89 [2023-12-19 10:45:06,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:06,302 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2023-12-19 10:45:06,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2023-12-19 10:45:06,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 10:45:06,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:06,306 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:06,321 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 10:45:06,508 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 10:45:06,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:06,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1449418664, now seen corresponding path program 1 times [2023-12-19 10:45:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:06,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139480370] [2023-12-19 10:45:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:06,526 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:06,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87409010] [2023-12-19 10:45:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:06,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:06,530 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 10:45:06,532 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 10:45:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:06,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 10:45:06,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:06,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:06,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:06,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139480370] [2023-12-19 10:45:06,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:06,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87409010] [2023-12-19 10:45:06,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87409010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:06,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:06,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 10:45:06,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929254658] [2023-12-19 10:45:06,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:06,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 10:45:06,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:06,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 10:45:06,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 10:45:06,822 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:06,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:06,981 INFO L93 Difference]: Finished difference Result 113 states and 141 transitions. [2023-12-19 10:45:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 10:45:06,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 90 [2023-12-19 10:45:06,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:06,983 INFO L225 Difference]: With dead ends: 113 [2023-12-19 10:45:06,983 INFO L226 Difference]: Without dead ends: 111 [2023-12-19 10:45:06,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-19 10:45:06,984 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 75 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:06,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 263 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 10:45:06,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-19 10:45:06,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 69. [2023-12-19 10:45:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.26) internal successors, (63), 51 states have internal predecessors, (63), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-19 10:45:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2023-12-19 10:45:06,990 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 90 [2023-12-19 10:45:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:06,991 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2023-12-19 10:45:06,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2023-12-19 10:45:06,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 10:45:06,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:06,992 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:06,998 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 10:45:07,198 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 10:45:07,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:07,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash 640072038, now seen corresponding path program 1 times [2023-12-19 10:45:07,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:07,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816284350] [2023-12-19 10:45:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:07,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:07,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:07,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037115811] [2023-12-19 10:45:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:07,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:07,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:07,216 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) [2023-12-19 10:45:07,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 10:45:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:07,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 10:45:07,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:07,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:07,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816284350] [2023-12-19 10:45:07,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037115811] [2023-12-19 10:45:07,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037115811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:07,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:07,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 10:45:07,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134800297] [2023-12-19 10:45:07,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:07,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 10:45:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:07,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 10:45:07,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 10:45:07,402 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:07,569 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2023-12-19 10:45:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 10:45:07,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 90 [2023-12-19 10:45:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:07,570 INFO L225 Difference]: With dead ends: 116 [2023-12-19 10:45:07,570 INFO L226 Difference]: Without dead ends: 114 [2023-12-19 10:45:07,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-19 10:45:07,571 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 68 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:07,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 327 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 10:45:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-19 10:45:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 66. [2023-12-19 10:45:07,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 48 states have internal predecessors, (59), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-19 10:45:07,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2023-12-19 10:45:07,593 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 90 [2023-12-19 10:45:07,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:07,594 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2023-12-19 10:45:07,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:07,594 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2023-12-19 10:45:07,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 10:45:07,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:07,595 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:07,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 10:45:07,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:07,803 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:07,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:07,803 INFO L85 PathProgramCache]: Analyzing trace with hash -233425856, now seen corresponding path program 1 times [2023-12-19 10:45:07,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:07,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846098965] [2023-12-19 10:45:07,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:07,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:07,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:07,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593498973] [2023-12-19 10:45:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:07,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:07,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:07,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 10:45:07,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 10:45:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:07,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 10:45:07,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:07,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:07,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:07,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846098965] [2023-12-19 10:45:07,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:07,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593498973] [2023-12-19 10:45:07,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593498973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:07,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:07,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 10:45:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186702654] [2023-12-19 10:45:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:07,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 10:45:07,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:07,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 10:45:07,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 10:45:07,945 INFO L87 Difference]: Start difference. First operand 66 states and 91 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:07,984 INFO L93 Difference]: Finished difference Result 140 states and 190 transitions. [2023-12-19 10:45:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 10:45:07,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 91 [2023-12-19 10:45:07,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:07,987 INFO L225 Difference]: With dead ends: 140 [2023-12-19 10:45:07,987 INFO L226 Difference]: Without dead ends: 75 [2023-12-19 10:45:07,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 10:45:07,988 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:07,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 108 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 10:45:07,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-19 10:45:07,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2023-12-19 10:45:07,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 states have internal predecessors, (56), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-19 10:45:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2023-12-19 10:45:08,004 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 91 [2023-12-19 10:45:08,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:08,004 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2023-12-19 10:45:08,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:08,005 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2023-12-19 10:45:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 10:45:08,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:08,005 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:08,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 10:45:08,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:08,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:08,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:08,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2087642367, now seen corresponding path program 1 times [2023-12-19 10:45:08,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:08,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630760482] [2023-12-19 10:45:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:08,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:08,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:08,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906479594] [2023-12-19 10:45:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:08,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:08,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:08,239 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 10:45:08,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 10:45:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:08,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 10:45:08,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:08,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:08,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:08,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630760482] [2023-12-19 10:45:08,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:08,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906479594] [2023-12-19 10:45:08,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906479594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:08,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:08,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 10:45:08,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979241957] [2023-12-19 10:45:08,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:08,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 10:45:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:08,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 10:45:08,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 10:45:08,327 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:08,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:08,375 INFO L93 Difference]: Finished difference Result 129 states and 175 transitions. [2023-12-19 10:45:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 10:45:08,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 91 [2023-12-19 10:45:08,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:08,376 INFO L225 Difference]: With dead ends: 129 [2023-12-19 10:45:08,376 INFO L226 Difference]: Without dead ends: 66 [2023-12-19 10:45:08,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 10:45:08,378 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 23 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:08,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 100 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 10:45:08,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-19 10:45:08,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2023-12-19 10:45:08,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 10:45:08,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2023-12-19 10:45:08,384 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 91 [2023-12-19 10:45:08,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:08,385 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2023-12-19 10:45:08,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2023-12-19 10:45:08,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 10:45:08,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:08,385 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:08,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 10:45:08,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 10:45:08,595 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:08,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:08,595 INFO L85 PathProgramCache]: Analyzing trace with hash 784019930, now seen corresponding path program 1 times [2023-12-19 10:45:08,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:08,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677253646] [2023-12-19 10:45:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:08,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:08,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:08,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655684290] [2023-12-19 10:45:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:08,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:08,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:08,606 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 10:45:08,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 10:45:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:08,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 10:45:08,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:08,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:08,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:08,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677253646] [2023-12-19 10:45:08,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:08,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655684290] [2023-12-19 10:45:08,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655684290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:08,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:08,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 10:45:08,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995958309] [2023-12-19 10:45:08,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:08,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 10:45:08,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:08,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 10:45:08,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 10:45:08,962 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:09,129 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2023-12-19 10:45:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 10:45:09,130 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 93 [2023-12-19 10:45:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:09,130 INFO L225 Difference]: With dead ends: 97 [2023-12-19 10:45:09,130 INFO L226 Difference]: Without dead ends: 95 [2023-12-19 10:45:09,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-19 10:45:09,132 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 40 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:09,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 389 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 10:45:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-19 10:45:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 63. [2023-12-19 10:45:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 46 states have internal predecessors, (56), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 10:45:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2023-12-19 10:45:09,140 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 93 [2023-12-19 10:45:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:09,141 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2023-12-19 10:45:09,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2023-12-19 10:45:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 10:45:09,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:09,143 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:09,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 10:45:09,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:09,357 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:09,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1180763520, now seen corresponding path program 1 times [2023-12-19 10:45:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628487226] [2023-12-19 10:45:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:09,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:09,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626578266] [2023-12-19 10:45:09,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:09,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:09,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:09,374 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 10:45:09,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 10:45:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:09,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 10:45:09,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:09,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:09,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:09,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628487226] [2023-12-19 10:45:09,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:09,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626578266] [2023-12-19 10:45:09,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626578266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:09,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:09,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 10:45:09,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743096236] [2023-12-19 10:45:09,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:09,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 10:45:09,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:09,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 10:45:09,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-19 10:45:09,640 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:09,815 INFO L93 Difference]: Finished difference Result 95 states and 118 transitions. [2023-12-19 10:45:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 10:45:09,815 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2023-12-19 10:45:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:09,816 INFO L225 Difference]: With dead ends: 95 [2023-12-19 10:45:09,816 INFO L226 Difference]: Without dead ends: 93 [2023-12-19 10:45:09,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-12-19 10:45:09,817 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 38 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:09,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 399 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 10:45:09,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-19 10:45:09,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 62. [2023-12-19 10:45:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 10:45:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2023-12-19 10:45:09,821 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 94 [2023-12-19 10:45:09,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:09,821 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2023-12-19 10:45:09,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:09,822 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2023-12-19 10:45:09,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 10:45:09,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:09,822 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:09,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 10:45:10,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 10:45:10,029 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:10,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:10,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1187554327, now seen corresponding path program 1 times [2023-12-19 10:45:10,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:10,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225920145] [2023-12-19 10:45:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:10,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:10,039 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380872900] [2023-12-19 10:45:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:10,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:10,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:10,040 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 10:45:10,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 10:45:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:10,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 10:45:10,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:10,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:10,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:10,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225920145] [2023-12-19 10:45:10,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380872900] [2023-12-19 10:45:10,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380872900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:10,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:10,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 10:45:10,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37526060] [2023-12-19 10:45:10,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:10,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 10:45:10,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:10,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 10:45:10,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 10:45:10,431 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:10,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:10,681 INFO L93 Difference]: Finished difference Result 119 states and 144 transitions. [2023-12-19 10:45:10,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 10:45:10,682 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2023-12-19 10:45:10,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:10,682 INFO L225 Difference]: With dead ends: 119 [2023-12-19 10:45:10,683 INFO L226 Difference]: Without dead ends: 117 [2023-12-19 10:45:10,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-12-19 10:45:10,683 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 63 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:10,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 476 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 10:45:10,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-19 10:45:10,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 64. [2023-12-19 10:45:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 10:45:10,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2023-12-19 10:45:10,687 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 94 [2023-12-19 10:45:10,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:10,688 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2023-12-19 10:45:10,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2023-12-19 10:45:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 10:45:10,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:10,689 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:10,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 10:45:10,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 10:45:10,894 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:10,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1580581337, now seen corresponding path program 1 times [2023-12-19 10:45:10,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:10,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648020472] [2023-12-19 10:45:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:10,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:10,907 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:10,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085263541] [2023-12-19 10:45:10,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:10,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:10,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:10,908 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 10:45:10,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 10:45:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:10,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 10:45:10,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 220 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-19 10:45:11,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 10:45:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:11,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:11,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648020472] [2023-12-19 10:45:11,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:11,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085263541] [2023-12-19 10:45:11,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085263541] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 10:45:11,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 10:45:11,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2023-12-19 10:45:11,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315132904] [2023-12-19 10:45:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:11,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 10:45:11,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:11,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 10:45:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2023-12-19 10:45:11,837 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:12,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:12,165 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2023-12-19 10:45:12,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 10:45:12,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2023-12-19 10:45:12,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:12,167 INFO L225 Difference]: With dead ends: 128 [2023-12-19 10:45:12,167 INFO L226 Difference]: Without dead ends: 126 [2023-12-19 10:45:12,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2023-12-19 10:45:12,168 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 64 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:12,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 449 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 10:45:12,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-19 10:45:12,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 64. [2023-12-19 10:45:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 10:45:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2023-12-19 10:45:12,173 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 94 [2023-12-19 10:45:12,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:12,173 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2023-12-19 10:45:12,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2023-12-19 10:45:12,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 10:45:12,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:12,174 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:12,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 10:45:12,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 10:45:12,382 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:12,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:12,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1773404925, now seen corresponding path program 1 times [2023-12-19 10:45:12,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:12,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660854824] [2023-12-19 10:45:12,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:12,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:12,391 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:12,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679247253] [2023-12-19 10:45:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:12,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:12,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:12,394 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 10:45:12,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 10:45:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:12,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 10:45:12,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:12,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:12,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:12,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660854824] [2023-12-19 10:45:12,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:12,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679247253] [2023-12-19 10:45:12,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679247253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:12,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:12,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 10:45:12,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024949276] [2023-12-19 10:45:12,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:12,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 10:45:12,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:12,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 10:45:12,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-19 10:45:12,854 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:13,070 INFO L93 Difference]: Finished difference Result 95 states and 118 transitions. [2023-12-19 10:45:13,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 10:45:13,070 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2023-12-19 10:45:13,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:13,071 INFO L225 Difference]: With dead ends: 95 [2023-12-19 10:45:13,071 INFO L226 Difference]: Without dead ends: 93 [2023-12-19 10:45:13,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-19 10:45:13,072 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 46 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:13,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 344 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 10:45:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-19 10:45:13,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 64. [2023-12-19 10:45:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 10:45:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2023-12-19 10:45:13,078 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 95 [2023-12-19 10:45:13,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:13,078 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2023-12-19 10:45:13,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2023-12-19 10:45:13,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 10:45:13,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:45:13,079 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:13,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 10:45:13,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 10:45:13,280 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:45:13,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:45:13,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2128535361, now seen corresponding path program 1 times [2023-12-19 10:45:13,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:45:13,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059974575] [2023-12-19 10:45:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:13,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:45:13,288 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:45:13,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107002778] [2023-12-19 10:45:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:45:13,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:13,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:45:13,295 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 10:45:13,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 10:45:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:45:13,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 10:45:13,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:45:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-12-19 10:45:13,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:45:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:45:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059974575] [2023-12-19 10:45:13,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:45:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107002778] [2023-12-19 10:45:13,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107002778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:45:13,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:45:13,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 10:45:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287364457] [2023-12-19 10:45:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:45:13,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 10:45:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:45:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 10:45:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-19 10:45:13,597 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:13,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:45:13,782 INFO L93 Difference]: Finished difference Result 93 states and 116 transitions. [2023-12-19 10:45:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 10:45:13,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2023-12-19 10:45:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:45:13,783 INFO L225 Difference]: With dead ends: 93 [2023-12-19 10:45:13,783 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 10:45:13,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-19 10:45:13,784 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 52 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:45:13,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 315 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 10:45:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 10:45:13,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 10:45:13,785 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 10:45:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 10:45:13,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 95 [2023-12-19 10:45:13,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:45:13,785 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 10:45:13,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 10:45:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 10:45:13,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 10:45:13,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 10:45:13,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 10:45:13,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:45:13,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 10:45:14,204 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-19 10:45:14,205 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-19 10:45:14,205 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-19 10:45:14,205 INFO L902 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: true [2023-12-19 10:45:14,205 INFO L902 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: true [2023-12-19 10:45:14,205 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-12-19 10:45:14,205 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 62) no Hoare annotation was computed. [2023-12-19 10:45:14,205 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-12-19 10:45:14,205 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 39) no Hoare annotation was computed. [2023-12-19 10:45:14,205 INFO L899 garLoopResultBuilder]: For program point L37-2(lines 36 62) no Hoare annotation was computed. [2023-12-19 10:45:14,205 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 58) no Hoare annotation was computed. [2023-12-19 10:45:14,205 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 10:45:14,205 INFO L902 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: true [2023-12-19 10:45:14,205 INFO L902 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: true [2023-12-19 10:45:14,205 INFO L902 garLoopResultBuilder]: At program point L80(line 80) the Hoare annotation is: true [2023-12-19 10:45:14,205 INFO L902 garLoopResultBuilder]: At program point L80-1(line 80) the Hoare annotation is: true [2023-12-19 10:45:14,205 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-12-19 10:45:14,206 INFO L902 garLoopResultBuilder]: At program point L97-2(lines 97 103) the Hoare annotation is: true [2023-12-19 10:45:14,206 INFO L899 garLoopResultBuilder]: For program point L97-3(lines 97 103) no Hoare annotation was computed. [2023-12-19 10:45:14,206 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-12-19 10:45:14,206 INFO L899 garLoopResultBuilder]: For program point L40(lines 36 62) no Hoare annotation was computed. [2023-12-19 10:45:14,206 INFO L902 garLoopResultBuilder]: At program point L65(line 65) the Hoare annotation is: true [2023-12-19 10:45:14,206 INFO L902 garLoopResultBuilder]: At program point L65-1(line 65) the Hoare annotation is: true [2023-12-19 10:45:14,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-19 10:45:14,206 INFO L902 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: true [2023-12-19 10:45:14,206 INFO L902 garLoopResultBuilder]: At program point L74-1(line 74) the Hoare annotation is: true [2023-12-19 10:45:14,206 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2023-12-19 10:45:14,206 INFO L899 garLoopResultBuilder]: For program point L41-2(lines 41 49) no Hoare annotation was computed. [2023-12-19 10:45:14,206 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2023-12-19 10:45:14,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 10:45:14,206 INFO L899 garLoopResultBuilder]: For program point L91(line 91) no Hoare annotation was computed. [2023-12-19 10:45:14,206 INFO L899 garLoopResultBuilder]: For program point L91-1(line 91) no Hoare annotation was computed. [2023-12-19 10:45:14,207 INFO L899 garLoopResultBuilder]: For program point L91-2(line 91) no Hoare annotation was computed. [2023-12-19 10:45:14,207 INFO L899 garLoopResultBuilder]: For program point L91-4(line 91) no Hoare annotation was computed. [2023-12-19 10:45:14,207 INFO L899 garLoopResultBuilder]: For program point L91-6(line 91) no Hoare annotation was computed. [2023-12-19 10:45:14,207 INFO L902 garLoopResultBuilder]: At program point L83(line 83) the Hoare annotation is: true [2023-12-19 10:45:14,207 INFO L899 garLoopResultBuilder]: For program point L91-8(line 91) no Hoare annotation was computed. [2023-12-19 10:45:14,207 INFO L902 garLoopResultBuilder]: At program point L83-1(line 83) the Hoare annotation is: true [2023-12-19 10:45:14,207 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-12-19 10:45:14,207 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2023-12-19 10:45:14,207 INFO L899 garLoopResultBuilder]: For program point L84(lines 63 85) no Hoare annotation was computed. [2023-12-19 10:45:14,207 INFO L902 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: true [2023-12-19 10:45:14,207 INFO L902 garLoopResultBuilder]: At program point L68-1(line 68) the Hoare annotation is: true [2023-12-19 10:45:14,207 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-12-19 10:45:14,207 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-12-19 10:45:14,207 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-12-19 10:45:14,207 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-12-19 10:45:14,210 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 10:45:14,211 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 10:45:14,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 10:45:14 BoogieIcfgContainer [2023-12-19 10:45:14,218 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 10:45:14,218 INFO L158 Benchmark]: Toolchain (without parser) took 12247.37ms. Allocated memory was 273.7MB in the beginning and 475.0MB in the end (delta: 201.3MB). Free memory was 229.9MB in the beginning and 171.9MB in the end (delta: 58.0MB). Peak memory consumption was 260.3MB. Max. memory is 8.0GB. [2023-12-19 10:45:14,218 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 206.6MB. Free memory is still 153.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 10:45:14,218 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.13ms. Allocated memory is still 273.7MB. Free memory was 229.8MB in the beginning and 216.6MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 10:45:14,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.93ms. Allocated memory is still 273.7MB. Free memory was 216.6MB in the beginning and 213.2MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 10:45:14,219 INFO L158 Benchmark]: Boogie Preprocessor took 52.50ms. Allocated memory is still 273.7MB. Free memory was 213.2MB in the beginning and 208.4MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 10:45:14,219 INFO L158 Benchmark]: RCFGBuilder took 380.52ms. Allocated memory is still 273.7MB. Free memory was 208.4MB in the beginning and 187.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-19 10:45:14,219 INFO L158 Benchmark]: TraceAbstraction took 11559.93ms. Allocated memory was 273.7MB in the beginning and 475.0MB in the end (delta: 201.3MB). Free memory was 186.8MB in the beginning and 171.9MB in the end (delta: 14.9MB). Peak memory consumption was 217.3MB. Max. memory is 8.0GB. [2023-12-19 10:45:14,220 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 206.6MB. Free memory is still 153.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.13ms. Allocated memory is still 273.7MB. Free memory was 229.8MB in the beginning and 216.6MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.93ms. Allocated memory is still 273.7MB. Free memory was 216.6MB in the beginning and 213.2MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.50ms. Allocated memory is still 273.7MB. Free memory was 213.2MB in the beginning and 208.4MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 380.52ms. Allocated memory is still 273.7MB. Free memory was 208.4MB in the beginning and 187.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 11559.93ms. Allocated memory was 273.7MB in the beginning and 475.0MB in the end (delta: 201.3MB). Free memory was 186.8MB in the beginning and 171.9MB in the end (delta: 14.9MB). Peak memory consumption was 217.3MB. 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: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 14, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 588 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 588 mSDsluCounter, 3836 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2826 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2070 IncrementalHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 1010 mSDtfsCounter, 2070 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1388 GetRequests, 1272 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=4, InterpolantAutomatonStates: 105, 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, 14 MinimizatonAttempts, 365 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 105 PreInvPairs, 125 NumberOfFragments, 16 HoareAnnotationTreeSize, 105 FormulaSimplifications, 1576372 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 16 FormulaSimplificationsInter, 87832 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1364 NumberOfCodeBlocks, 1364 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1356 ConstructedInterpolants, 0 QuantifiedInterpolants, 4148 SizeOfPredicates, 128 NumberOfNonLiveVariables, 3076 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 5400/5460 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: 97]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-19 10:45:14,249 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...