/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:41:43,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:41:43,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:41:43,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:41:43,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 22:41:43,359 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:41:43,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:41:43,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:41:43,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:41:43,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:41:43,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:41:43,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:41:43,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:41:43,361 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:41:43,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:41:43,361 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:41:43,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:41:43,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:41:43,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:41:43,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:41:43,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:41:43,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:41:43,362 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:41:43,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:41:43,363 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:41:43,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:41:43,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:41:43,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:41:43,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:41:43,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:41:43,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:41:43,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:41:43,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:41:43,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:41:43,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:41:43,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:41:43,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:41:43,368 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:41:43,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:41:43,369 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:41:43,369 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:41:43,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:41:43,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:41:43,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:41:43,637 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:41:43,638 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:41:43,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label26.c [2023-04-01 22:41:44,813 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:41:45,238 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:41:45,239 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label26.c [2023-04-01 22:41:45,269 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ea96cd9/b75a61fa7aff499eb62164c89e394b10/FLAGd5b6dfe22 [2023-04-01 22:41:45,285 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ea96cd9/b75a61fa7aff499eb62164c89e394b10 [2023-04-01 22:41:45,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:41:45,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:41:45,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:41:45,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:41:45,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:41:45,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:41:45" (1/1) ... [2023-04-01 22:41:45,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb7e335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:45, skipping insertion in model container [2023-04-01 22:41:45,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:41:45" (1/1) ... [2023-04-01 22:41:45,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:41:45,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:41:45,694 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label26.c[5554,5567] [2023-04-01 22:41:46,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:41:46,485 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:41:46,512 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label26.c[5554,5567] [2023-04-01 22:41:46,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:41:46,977 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:41:46,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:46 WrapperNode [2023-04-01 22:41:46,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:41:46,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:41:46,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:41:46,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:41:46,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:46" (1/1) ... [2023-04-01 22:41:46,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:46" (1/1) ... [2023-04-01 22:41:47,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:46" (1/1) ... [2023-04-01 22:41:47,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:46" (1/1) ... [2023-04-01 22:41:47,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:46" (1/1) ... [2023-04-01 22:41:47,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:46" (1/1) ... [2023-04-01 22:41:47,288 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:46" (1/1) ... [2023-04-01 22:41:47,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:46" (1/1) ... [2023-04-01 22:41:47,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:41:47,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:41:47,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:41:47,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:41:47,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:46" (1/1) ... [2023-04-01 22:41:47,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:41:47,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:41:47,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:41:47,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:41:47,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:41:47,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:41:47,416 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:41:47,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:41:47,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:41:47,417 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:41:47,417 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:41:47,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:41:47,515 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:41:47,517 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:41:52,232 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:41:52,252 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:41:52,252 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:41:52,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:41:52 BoogieIcfgContainer [2023-04-01 22:41:52,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:41:52,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:41:52,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:41:52,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:41:52,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:41:45" (1/3) ... [2023-04-01 22:41:52,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78be23fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:41:52, skipping insertion in model container [2023-04-01 22:41:52,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:41:46" (2/3) ... [2023-04-01 22:41:52,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78be23fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:41:52, skipping insertion in model container [2023-04-01 22:41:52,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:41:52" (3/3) ... [2023-04-01 22:41:52,269 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26.c [2023-04-01 22:41:52,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:41:52,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:41:52,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:41:52,352 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=LoopsAndPotentialCycles, 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;@2a7457f0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:41:52,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:41:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:41:52,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-04-01 22:41:52,370 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:52,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:41:52,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:52,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1689936681, now seen corresponding path program 1 times [2023-04-01 22:41:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:52,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977869238] [2023-04-01 22:41:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:52,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:41:52,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:41:52,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977869238] [2023-04-01 22:41:52,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977869238] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:41:52,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:41:52,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 22:41:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225751916] [2023-04-01 22:41:52,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:41:52,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:41:52,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:41:52,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:41:52,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 22:41:52,949 INFO L87 Difference]: Start difference. First operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:41:59,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:41:59,428 INFO L93 Difference]: Finished difference Result 3165 states and 5795 transitions. [2023-04-01 22:41:59,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:41:59,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2023-04-01 22:41:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:41:59,457 INFO L225 Difference]: With dead ends: 3165 [2023-04-01 22:41:59,457 INFO L226 Difference]: Without dead ends: 1961 [2023-04-01 22:41:59,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:41:59,471 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 2904 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4376 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2904 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 4995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 4376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:41:59,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2904 Valid, 292 Invalid, 4995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 4376 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-04-01 22:41:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2023-04-01 22:41:59,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1943. [2023-04-01 22:41:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1918 states have (on average 1.7278415015641293) internal successors, (3314), 1920 states have internal predecessors, (3314), 10 states have call successors, (10), 10 states have call predecessors, (10), 14 states have return successors, (22), 12 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 22:41:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 3346 transitions. [2023-04-01 22:41:59,619 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 3346 transitions. Word has length 44 [2023-04-01 22:41:59,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:41:59,621 INFO L495 AbstractCegarLoop]: Abstraction has 1943 states and 3346 transitions. [2023-04-01 22:41:59,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:41:59,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 3346 transitions. [2023-04-01 22:41:59,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-01 22:41:59,627 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:41:59,627 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:41:59,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:41:59,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:41:59,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:41:59,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1355090441, now seen corresponding path program 1 times [2023-04-01 22:41:59,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:41:59,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399226792] [2023-04-01 22:41:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:41:59,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:41:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:41:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:41:59,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:41:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:00,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399226792] [2023-04-01 22:42:00,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399226792] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:42:00,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:42:00,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:42:00,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420440180] [2023-04-01 22:42:00,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:42:00,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:42:00,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:00,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:42:00,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:42:00,116 INFO L87 Difference]: Start difference. First operand 1943 states and 3346 transitions. Second operand has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:42:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:08,110 INFO L93 Difference]: Finished difference Result 6452 states and 11418 transitions. [2023-04-01 22:42:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:42:08,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 113 [2023-04-01 22:42:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:08,138 INFO L225 Difference]: With dead ends: 6452 [2023-04-01 22:42:08,139 INFO L226 Difference]: Without dead ends: 4515 [2023-04-01 22:42:08,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:42:08,156 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 6901 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 6734 mSolverCounterSat, 2197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6901 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 8931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2197 IncrementalHoareTripleChecker+Valid, 6734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:08,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6901 Valid, 596 Invalid, 8931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2197 Valid, 6734 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-04-01 22:42:08,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4515 states. [2023-04-01 22:42:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 4476. [2023-04-01 22:42:08,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4388 states have (on average 1.5009115770282588) internal successors, (6586), 4401 states have internal predecessors, (6586), 22 states have call successors, (22), 22 states have call predecessors, (22), 65 states have return successors, (161), 52 states have call predecessors, (161), 21 states have call successors, (161) [2023-04-01 22:42:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 6769 transitions. [2023-04-01 22:42:08,307 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 6769 transitions. Word has length 113 [2023-04-01 22:42:08,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:08,308 INFO L495 AbstractCegarLoop]: Abstraction has 4476 states and 6769 transitions. [2023-04-01 22:42:08,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:42:08,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 6769 transitions. [2023-04-01 22:42:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-01 22:42:08,316 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:08,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:42:08,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:42:08,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:08,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:08,317 INFO L85 PathProgramCache]: Analyzing trace with hash 785276965, now seen corresponding path program 1 times [2023-04-01 22:42:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:08,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438187984] [2023-04-01 22:42:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:08,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:08,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:08,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438187984] [2023-04-01 22:42:08,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438187984] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:42:08,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:42:08,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:42:08,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349306365] [2023-04-01 22:42:08,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:42:08,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:42:08,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:08,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:42:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:42:08,718 INFO L87 Difference]: Start difference. First operand 4476 states and 6769 transitions. Second operand has 7 states, 6 states have (on average 18.166666666666668) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:42:14,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:14,923 INFO L93 Difference]: Finished difference Result 13390 states and 20653 transitions. [2023-04-01 22:42:14,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:42:14,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.166666666666668) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 115 [2023-04-01 22:42:14,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:14,968 INFO L225 Difference]: With dead ends: 13390 [2023-04-01 22:42:14,968 INFO L226 Difference]: Without dead ends: 8920 [2023-04-01 22:42:14,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:42:14,985 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 5086 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 6567 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5086 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 7541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 6567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:14,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5086 Valid, 814 Invalid, 7541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 6567 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 22:42:14,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8920 states. [2023-04-01 22:42:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8920 to 8799. [2023-04-01 22:42:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8799 states, 8567 states have (on average 1.345862028714836) internal successors, (11530), 8609 states have internal predecessors, (11530), 42 states have call successors, (42), 42 states have call predecessors, (42), 189 states have return successors, (627), 147 states have call predecessors, (627), 41 states have call successors, (627) [2023-04-01 22:42:15,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8799 states to 8799 states and 12199 transitions. [2023-04-01 22:42:15,212 INFO L78 Accepts]: Start accepts. Automaton has 8799 states and 12199 transitions. Word has length 115 [2023-04-01 22:42:15,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:15,214 INFO L495 AbstractCegarLoop]: Abstraction has 8799 states and 12199 transitions. [2023-04-01 22:42:15,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.166666666666668) internal successors, (109), 4 states have internal predecessors, (109), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:42:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 8799 states and 12199 transitions. [2023-04-01 22:42:15,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-04-01 22:42:15,222 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:15,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:42:15,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:42:15,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:15,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:15,223 INFO L85 PathProgramCache]: Analyzing trace with hash 157923501, now seen corresponding path program 1 times [2023-04-01 22:42:15,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:15,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247979841] [2023-04-01 22:42:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:15,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:15,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:15,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247979841] [2023-04-01 22:42:15,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247979841] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:15,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347950404] [2023-04-01 22:42:15,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:15,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:15,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:15,497 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) [2023-04-01 22:42:15,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:42:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:15,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:42:15,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:15,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:42:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347950404] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:42:15,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:42:15,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:42:15,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652890398] [2023-04-01 22:42:15,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:42:15,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:42:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:15,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:42:15,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:42:15,741 INFO L87 Difference]: Start difference. First operand 8799 states and 12199 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:42:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:19,286 INFO L93 Difference]: Finished difference Result 25892 states and 37035 transitions. [2023-04-01 22:42:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:42:19,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 159 [2023-04-01 22:42:19,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:19,359 INFO L225 Difference]: With dead ends: 25892 [2023-04-01 22:42:19,359 INFO L226 Difference]: Without dead ends: 17099 [2023-04-01 22:42:19,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:42:19,388 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 850 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 3243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:19,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1150 Invalid, 3243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 2454 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 22:42:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17099 states. [2023-04-01 22:42:19,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17099 to 17071. [2023-04-01 22:42:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17071 states, 16671 states have (on average 1.2196029032451563) internal successors, (20332), 16742 states have internal predecessors, (20332), 82 states have call successors, (82), 82 states have call predecessors, (82), 317 states have return successors, (1633), 246 states have call predecessors, (1633), 81 states have call successors, (1633) [2023-04-01 22:42:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17071 states to 17071 states and 22047 transitions. [2023-04-01 22:42:19,845 INFO L78 Accepts]: Start accepts. Automaton has 17071 states and 22047 transitions. Word has length 159 [2023-04-01 22:42:19,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:19,846 INFO L495 AbstractCegarLoop]: Abstraction has 17071 states and 22047 transitions. [2023-04-01 22:42:19,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:42:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 17071 states and 22047 transitions. [2023-04-01 22:42:19,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-04-01 22:42:19,850 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:19,850 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:42:19,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 22:42:20,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:20,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:20,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:20,056 INFO L85 PathProgramCache]: Analyzing trace with hash -473130319, now seen corresponding path program 1 times [2023-04-01 22:42:20,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:20,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763843781] [2023-04-01 22:42:20,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:20,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:20,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:20,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:20,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763843781] [2023-04-01 22:42:20,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763843781] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:20,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82451914] [2023-04-01 22:42:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:20,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:20,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:20,306 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) [2023-04-01 22:42:20,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:42:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:20,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:42:20,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:20,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:42:20,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82451914] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:42:20,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:42:20,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:42:20,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449537931] [2023-04-01 22:42:20,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:42:20,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:42:20,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:20,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:42:20,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:42:20,492 INFO L87 Difference]: Start difference. First operand 17071 states and 22047 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:42:23,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:23,306 INFO L93 Difference]: Finished difference Result 33334 states and 43327 transitions. [2023-04-01 22:42:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:42:23,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 164 [2023-04-01 22:42:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:23,356 INFO L225 Difference]: With dead ends: 33334 [2023-04-01 22:42:23,356 INFO L226 Difference]: Without dead ends: 17072 [2023-04-01 22:42:23,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:42:23,391 INFO L413 NwaCegarLoop]: 1412 mSDtfsCounter, 1189 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:23,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1518 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 22:42:23,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17072 states. [2023-04-01 22:42:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17072 to 15465. [2023-04-01 22:42:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15465 states, 15081 states have (on average 1.161925601750547) internal successors, (17523), 15152 states have internal predecessors, (17523), 74 states have call successors, (74), 74 states have call predecessors, (74), 309 states have return successors, (1141), 238 states have call predecessors, (1141), 73 states have call successors, (1141) [2023-04-01 22:42:23,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15465 states to 15465 states and 18738 transitions. [2023-04-01 22:42:23,684 INFO L78 Accepts]: Start accepts. Automaton has 15465 states and 18738 transitions. Word has length 164 [2023-04-01 22:42:23,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:23,684 INFO L495 AbstractCegarLoop]: Abstraction has 15465 states and 18738 transitions. [2023-04-01 22:42:23,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:42:23,685 INFO L276 IsEmpty]: Start isEmpty. Operand 15465 states and 18738 transitions. [2023-04-01 22:42:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-04-01 22:42:23,688 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:23,689 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:42:23,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 22:42:23,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:23,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:23,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1760069505, now seen corresponding path program 1 times [2023-04-01 22:42:23,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:23,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095602262] [2023-04-01 22:42:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:42:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:42:24,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:24,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095602262] [2023-04-01 22:42:24,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095602262] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:24,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336051301] [2023-04-01 22:42:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:24,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:24,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:24,225 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) [2023-04-01 22:42:24,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:42:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:24,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:42:24,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:24,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:42:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:42:24,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336051301] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:42:24,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:42:24,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:42:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450922998] [2023-04-01 22:42:24,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:42:24,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:42:24,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:42:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:42:24,775 INFO L87 Difference]: Start difference. First operand 15465 states and 18738 transitions. Second operand has 11 states, 11 states have (on average 32.72727272727273) internal successors, (360), 9 states have internal predecessors, (360), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:42:31,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:31,767 INFO L93 Difference]: Finished difference Result 44659 states and 56721 transitions. [2023-04-01 22:42:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:42:31,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 32.72727272727273) internal successors, (360), 9 states have internal predecessors, (360), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 233 [2023-04-01 22:42:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:31,890 INFO L225 Difference]: With dead ends: 44659 [2023-04-01 22:42:31,890 INFO L226 Difference]: Without dead ends: 30003 [2023-04-01 22:42:31,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 467 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:42:31,995 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 5785 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 8140 mSolverCounterSat, 1366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5785 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 9506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1366 IncrementalHoareTripleChecker+Valid, 8140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:31,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5785 Valid, 815 Invalid, 9506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1366 Valid, 8140 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-04-01 22:42:32,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30003 states. [2023-04-01 22:42:32,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30003 to 29748. [2023-04-01 22:42:32,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29748 states, 28733 states have (on average 1.1312776250304528) internal successors, (32505), 28992 states have internal predecessors, (32505), 138 states have call successors, (138), 138 states have call predecessors, (138), 876 states have return successors, (3375), 617 states have call predecessors, (3375), 137 states have call successors, (3375) [2023-04-01 22:42:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29748 states to 29748 states and 36018 transitions. [2023-04-01 22:42:32,571 INFO L78 Accepts]: Start accepts. Automaton has 29748 states and 36018 transitions. Word has length 233 [2023-04-01 22:42:32,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:32,572 INFO L495 AbstractCegarLoop]: Abstraction has 29748 states and 36018 transitions. [2023-04-01 22:42:32,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.72727272727273) internal successors, (360), 9 states have internal predecessors, (360), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:42:32,572 INFO L276 IsEmpty]: Start isEmpty. Operand 29748 states and 36018 transitions. [2023-04-01 22:42:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-04-01 22:42:32,578 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:32,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:42:32,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:42:32,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:32,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:32,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:32,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1424376, now seen corresponding path program 1 times [2023-04-01 22:42:32,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:32,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710839859] [2023-04-01 22:42:32,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:32,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:32,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:32,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:33,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:42:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:42:33,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:33,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710839859] [2023-04-01 22:42:33,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710839859] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:33,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091391905] [2023-04-01 22:42:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:33,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:33,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:33,132 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) [2023-04-01 22:42:33,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:42:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:33,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:42:33,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:42:33,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:42:33,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091391905] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:42:33,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:42:33,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 22:42:33,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304480778] [2023-04-01 22:42:33,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:42:33,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:42:33,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:33,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:42:33,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:42:33,405 INFO L87 Difference]: Start difference. First operand 29748 states and 36018 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:42:36,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:36,911 INFO L93 Difference]: Finished difference Result 66958 states and 83259 transitions. [2023-04-01 22:42:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:42:36,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 266 [2023-04-01 22:42:36,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:37,045 INFO L225 Difference]: With dead ends: 66958 [2023-04-01 22:42:37,045 INFO L226 Difference]: Without dead ends: 42122 [2023-04-01 22:42:37,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:42:37,078 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 997 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 3444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 812 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:37,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 600 Invalid, 3444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [812 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 22:42:37,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42122 states. [2023-04-01 22:42:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42122 to 38805. [2023-04-01 22:42:37,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38805 states, 37612 states have (on average 1.133999787301925) internal successors, (42652), 37914 states have internal predecessors, (42652), 182 states have call successors, (182), 182 states have call predecessors, (182), 1010 states have return successors, (4803), 708 states have call predecessors, (4803), 181 states have call successors, (4803) [2023-04-01 22:42:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38805 states to 38805 states and 47637 transitions. [2023-04-01 22:42:37,871 INFO L78 Accepts]: Start accepts. Automaton has 38805 states and 47637 transitions. Word has length 266 [2023-04-01 22:42:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:37,872 INFO L495 AbstractCegarLoop]: Abstraction has 38805 states and 47637 transitions. [2023-04-01 22:42:37,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:42:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 38805 states and 47637 transitions. [2023-04-01 22:42:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-04-01 22:42:37,879 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:37,879 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:42:37,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 22:42:38,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:38,085 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:38,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:38,086 INFO L85 PathProgramCache]: Analyzing trace with hash -889901961, now seen corresponding path program 1 times [2023-04-01 22:42:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:38,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232160726] [2023-04-01 22:42:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:42:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-04-01 22:42:38,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:38,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232160726] [2023-04-01 22:42:38,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232160726] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:42:38,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:42:38,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:42:38,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828687862] [2023-04-01 22:42:38,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:42:38,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 22:42:38,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:38,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 22:42:38,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:42:38,821 INFO L87 Difference]: Start difference. First operand 38805 states and 47637 transitions. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 4 states have internal predecessors, (191), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:42:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:44,004 INFO L93 Difference]: Finished difference Result 72743 states and 89953 transitions. [2023-04-01 22:42:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:42:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 4 states have internal predecessors, (191), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 310 [2023-04-01 22:42:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:44,109 INFO L225 Difference]: With dead ends: 72743 [2023-04-01 22:42:44,109 INFO L226 Difference]: Without dead ends: 38850 [2023-04-01 22:42:44,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:42:44,150 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 3929 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 5520 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3929 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 5831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 5520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:44,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3929 Valid, 393 Invalid, 5831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 5520 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 22:42:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38850 states. [2023-04-01 22:42:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38850 to 38774. [2023-04-01 22:42:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38774 states, 37587 states have (on average 1.1256551467262617) internal successors, (42310), 37886 states have internal predecessors, (42310), 182 states have call successors, (182), 182 states have call predecessors, (182), 1004 states have return successors, (4390), 705 states have call predecessors, (4390), 181 states have call successors, (4390) [2023-04-01 22:42:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38774 states to 38774 states and 46882 transitions. [2023-04-01 22:42:44,925 INFO L78 Accepts]: Start accepts. Automaton has 38774 states and 46882 transitions. Word has length 310 [2023-04-01 22:42:44,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:42:44,926 INFO L495 AbstractCegarLoop]: Abstraction has 38774 states and 46882 transitions. [2023-04-01 22:42:44,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 4 states have internal predecessors, (191), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:42:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 38774 states and 46882 transitions. [2023-04-01 22:42:44,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-04-01 22:42:44,934 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:42:44,934 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:42:44,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 22:42:44,935 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:42:44,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:42:44,935 INFO L85 PathProgramCache]: Analyzing trace with hash 637984833, now seen corresponding path program 1 times [2023-04-01 22:42:44,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:42:44,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807164054] [2023-04-01 22:42:44,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:44,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:42:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:45,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:42:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:45,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:42:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:42:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:45,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 22:42:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 275 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-04-01 22:42:45,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:42:45,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807164054] [2023-04-01 22:42:45,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807164054] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:42:45,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288713957] [2023-04-01 22:42:45,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:42:45,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:42:45,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:42:45,710 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) [2023-04-01 22:42:45,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:42:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:42:45,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:42:45,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:42:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-04-01 22:42:46,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:42:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-04-01 22:42:46,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288713957] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:42:46,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:42:46,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:42:46,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930590087] [2023-04-01 22:42:46,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:42:46,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:42:46,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:42:46,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:42:46,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:42:46,355 INFO L87 Difference]: Start difference. First operand 38774 states and 46882 transitions. Second operand has 12 states, 12 states have (on average 36.666666666666664) internal successors, (440), 10 states have internal predecessors, (440), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 22:42:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:42:57,639 INFO L93 Difference]: Finished difference Result 136233 states and 181357 transitions. [2023-04-01 22:42:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 22:42:57,639 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 36.666666666666664) internal successors, (440), 10 states have internal predecessors, (440), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 316 [2023-04-01 22:42:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:42:57,960 INFO L225 Difference]: With dead ends: 136233 [2023-04-01 22:42:57,960 INFO L226 Difference]: Without dead ends: 98268 [2023-04-01 22:42:58,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 649 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:42:58,007 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 7646 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 10967 mSolverCounterSat, 4020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7646 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 14987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4020 IncrementalHoareTripleChecker+Valid, 10967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:42:58,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7646 Valid, 862 Invalid, 14987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4020 Valid, 10967 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-04-01 22:42:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98268 states. [2023-04-01 22:42:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98268 to 94878. [2023-04-01 22:42:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94878 states, 92246 states have (on average 1.1179346529930838) internal successors, (103125), 92972 states have internal predecessors, (103125), 450 states have call successors, (450), 450 states have call predecessors, (450), 2181 states have return successors, (17372), 1455 states have call predecessors, (17372), 449 states have call successors, (17372) [2023-04-01 22:43:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94878 states to 94878 states and 120947 transitions. [2023-04-01 22:43:00,419 INFO L78 Accepts]: Start accepts. Automaton has 94878 states and 120947 transitions. Word has length 316 [2023-04-01 22:43:00,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:43:00,420 INFO L495 AbstractCegarLoop]: Abstraction has 94878 states and 120947 transitions. [2023-04-01 22:43:00,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.666666666666664) internal successors, (440), 10 states have internal predecessors, (440), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 22:43:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 94878 states and 120947 transitions. [2023-04-01 22:43:00,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-04-01 22:43:00,448 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:43:00,449 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:43:00,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 22:43:00,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:43:00,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:43:00,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:43:00,657 INFO L85 PathProgramCache]: Analyzing trace with hash -269182742, now seen corresponding path program 1 times [2023-04-01 22:43:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:43:00,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802827192] [2023-04-01 22:43:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:00,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:43:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:01,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:43:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:43:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:43:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:01,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-01 22:43:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 116 proven. 284 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:43:01,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:43:01,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802827192] [2023-04-01 22:43:01,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802827192] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:43:01,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224062284] [2023-04-01 22:43:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:01,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:43:01,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:43:01,874 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) [2023-04-01 22:43:01,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:43:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:02,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:43:02,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:43:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:43:02,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:43:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:43:02,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224062284] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:43:02,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:43:02,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2023-04-01 22:43:02,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815015781] [2023-04-01 22:43:02,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:43:02,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 22:43:02,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:43:02,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 22:43:02,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:43:02,711 INFO L87 Difference]: Start difference. First operand 94878 states and 120947 transitions. Second operand has 16 states, 16 states have (on average 44.0625) internal successors, (705), 14 states have internal predecessors, (705), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 22:43:29,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:43:29,622 INFO L93 Difference]: Finished difference Result 237956 states and 306221 transitions. [2023-04-01 22:43:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-04-01 22:43:29,622 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 44.0625) internal successors, (705), 14 states have internal predecessors, (705), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 405 [2023-04-01 22:43:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:43:30,243 INFO L225 Difference]: With dead ends: 237956 [2023-04-01 22:43:30,243 INFO L226 Difference]: Without dead ends: 139771 [2023-04-01 22:43:30,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1093 GetRequests, 936 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9920 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2392, Invalid=22414, Unknown=0, NotChecked=0, Total=24806 [2023-04-01 22:43:30,335 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 18667 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 35786 mSolverCounterSat, 5553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18667 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 41339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5553 IncrementalHoareTripleChecker+Valid, 35786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:43:30,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18667 Valid, 2227 Invalid, 41339 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5553 Valid, 35786 Invalid, 0 Unknown, 0 Unchecked, 22.0s Time] [2023-04-01 22:43:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139771 states. [2023-04-01 22:43:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139771 to 126519. [2023-04-01 22:43:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126519 states, 123703 states have (on average 1.0522784411049044) internal successors, (130170), 124387 states have internal predecessors, (130170), 621 states have call successors, (621), 610 states have call predecessors, (621), 2194 states have return successors, (11939), 1521 states have call predecessors, (11939), 620 states have call successors, (11939) [2023-04-01 22:43:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126519 states to 126519 states and 142730 transitions. [2023-04-01 22:43:32,725 INFO L78 Accepts]: Start accepts. Automaton has 126519 states and 142730 transitions. Word has length 405 [2023-04-01 22:43:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:43:32,726 INFO L495 AbstractCegarLoop]: Abstraction has 126519 states and 142730 transitions. [2023-04-01 22:43:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 44.0625) internal successors, (705), 14 states have internal predecessors, (705), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-04-01 22:43:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 126519 states and 142730 transitions. [2023-04-01 22:43:32,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-04-01 22:43:32,798 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:43:32,799 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:43:32,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:43:32,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:43:33,001 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:43:33,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:43:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1996343819, now seen corresponding path program 1 times [2023-04-01 22:43:33,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:43:33,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238471482] [2023-04-01 22:43:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:33,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:43:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:34,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:43:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:43:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:43:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:34,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-04-01 22:43:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:34,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-04-01 22:43:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 198 proven. 350 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-04-01 22:43:34,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:43:34,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238471482] [2023-04-01 22:43:34,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238471482] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:43:34,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567755806] [2023-04-01 22:43:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:43:34,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:43:34,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:43:34,869 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) [2023-04-01 22:43:34,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:43:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:43:35,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 22:43:35,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:43:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 471 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-04-01 22:43:35,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:43:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 160 proven. 475 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 22:43:36,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567755806] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:43:36,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:43:36,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 18 [2023-04-01 22:43:36,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109532361] [2023-04-01 22:43:36,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:43:36,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 22:43:36,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:43:36,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 22:43:36,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-04-01 22:43:36,187 INFO L87 Difference]: Start difference. First operand 126519 states and 142730 transitions. Second operand has 18 states, 18 states have (on average 44.388888888888886) internal successors, (799), 16 states have internal predecessors, (799), 8 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 22:43:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:43:59,861 INFO L93 Difference]: Finished difference Result 515807 states and 616802 transitions. [2023-04-01 22:43:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-04-01 22:43:59,861 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 44.388888888888886) internal successors, (799), 16 states have internal predecessors, (799), 8 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) Word has length 508 [2023-04-01 22:43:59,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:01,473 INFO L225 Difference]: With dead ends: 515807 [2023-04-01 22:44:01,473 INFO L226 Difference]: Without dead ends: 390097 [2023-04-01 22:44:01,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 1053 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=905, Invalid=2755, Unknown=0, NotChecked=0, Total=3660 [2023-04-01 22:44:01,616 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 15758 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 21143 mSolverCounterSat, 5642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15761 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 26785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5642 IncrementalHoareTripleChecker+Valid, 21143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:01,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15761 Valid, 1172 Invalid, 26785 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5642 Valid, 21143 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2023-04-01 22:44:01,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390097 states. [2023-04-01 22:44:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390097 to 367787. [2023-04-01 22:44:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367787 states, 361834 states have (on average 1.0493181956366733) internal successors, (379679), 362891 states have internal predecessors, (379679), 1832 states have call successors, (1832), 1802 states have call predecessors, (1832), 4120 states have return successors, (38143), 3093 states have call predecessors, (38143), 1831 states have call successors, (38143) [2023-04-01 22:44:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367787 states to 367787 states and 419654 transitions. [2023-04-01 22:44:09,803 INFO L78 Accepts]: Start accepts. Automaton has 367787 states and 419654 transitions. Word has length 508 [2023-04-01 22:44:09,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:09,804 INFO L495 AbstractCegarLoop]: Abstraction has 367787 states and 419654 transitions. [2023-04-01 22:44:09,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.388888888888886) internal successors, (799), 16 states have internal predecessors, (799), 8 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 22:44:09,804 INFO L276 IsEmpty]: Start isEmpty. Operand 367787 states and 419654 transitions. [2023-04-01 22:44:09,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-04-01 22:44:09,832 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:09,832 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:09,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 22:44:10,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:10,039 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:10,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1980580331, now seen corresponding path program 1 times [2023-04-01 22:44:10,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537007124] [2023-04-01 22:44:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:10,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:10,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:44:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:44:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:11,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-04-01 22:44:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 246 proven. 205 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-04-01 22:44:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:11,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537007124] [2023-04-01 22:44:11,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537007124] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:11,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257797122] [2023-04-01 22:44:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:11,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:11,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:11,162 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) [2023-04-01 22:44:11,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:44:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:11,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 22:44:11,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 565 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-04-01 22:44:11,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:44:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 309 proven. 76 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2023-04-01 22:44:11,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257797122] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:44:11,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:44:11,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 22:44:11,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948636571] [2023-04-01 22:44:11,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:44:11,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 22:44:11,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:11,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 22:44:11,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:44:11,721 INFO L87 Difference]: Start difference. First operand 367787 states and 419654 transitions. Second operand has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 11 states have internal predecessors, (622), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 22:44:29,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:29,915 INFO L93 Difference]: Finished difference Result 856965 states and 983082 transitions. [2023-04-01 22:44:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-01 22:44:29,915 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 11 states have internal predecessors, (622), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 512 [2023-04-01 22:44:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:44:31,587 INFO L225 Difference]: With dead ends: 856965 [2023-04-01 22:44:31,587 INFO L226 Difference]: Without dead ends: 494839 [2023-04-01 22:44:32,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 1047 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 22:44:32,148 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 7674 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 16394 mSolverCounterSat, 2742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7674 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 19136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2742 IncrementalHoareTripleChecker+Valid, 16394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:44:32,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7674 Valid, 1279 Invalid, 19136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2742 Valid, 16394 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2023-04-01 22:44:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494839 states. [2023-04-01 22:44:39,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494839 to 472110. [2023-04-01 22:44:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472110 states, 464846 states have (on average 1.044810539404448) internal successors, (485676), 466033 states have internal predecessors, (485676), 2351 states have call successors, (2351), 2318 states have call predecessors, (2351), 4912 states have return successors, (45334), 3758 states have call predecessors, (45334), 2350 states have call successors, (45334) [2023-04-01 22:44:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472110 states to 472110 states and 533361 transitions. [2023-04-01 22:44:42,025 INFO L78 Accepts]: Start accepts. Automaton has 472110 states and 533361 transitions. Word has length 512 [2023-04-01 22:44:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:44:42,025 INFO L495 AbstractCegarLoop]: Abstraction has 472110 states and 533361 transitions. [2023-04-01 22:44:42,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 11 states have internal predecessors, (622), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 22:44:42,026 INFO L276 IsEmpty]: Start isEmpty. Operand 472110 states and 533361 transitions. [2023-04-01 22:44:42,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2023-04-01 22:44:42,722 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:44:42,723 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:44:42,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 22:44:42,931 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,SelfDestructingSolverStorable11 [2023-04-01 22:44:42,932 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:44:42,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:44:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2128336252, now seen corresponding path program 1 times [2023-04-01 22:44:42,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:44:42,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040846163] [2023-04-01 22:44:42,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:42,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:44:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:44:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:44,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:44:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:44:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:44,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 22:44:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-04-01 22:44:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:44,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2023-04-01 22:44:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:44,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:44:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:45,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:44:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 443 proven. 102 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2023-04-01 22:44:45,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:44:45,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040846163] [2023-04-01 22:44:45,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040846163] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:44:45,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526553761] [2023-04-01 22:44:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:44:45,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:44:45,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:44:45,164 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) [2023-04-01 22:44:45,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:44:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:44:45,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:44:45,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:44:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 744 proven. 2 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-04-01 22:44:45,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:44:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 446 proven. 103 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2023-04-01 22:44:46,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526553761] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:44:46,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:44:46,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:44:46,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598968323] [2023-04-01 22:44:46,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:44:46,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:44:46,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:44:46,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:44:46,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:44:46,295 INFO L87 Difference]: Start difference. First operand 472110 states and 533361 transitions. Second operand has 11 states, 11 states have (on average 143.27272727272728) internal successors, (1576), 9 states have internal predecessors, (1576), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 22:44:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:44:59,600 INFO L93 Difference]: Finished difference Result 932344 states and 1053863 transitions. [2023-04-01 22:44:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 22:44:59,601 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 143.27272727272728) internal successors, (1576), 9 states have internal predecessors, (1576), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 1029 [2023-04-01 22:44:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:45:01,271 INFO L225 Difference]: With dead ends: 932344 [2023-04-01 22:45:01,272 INFO L226 Difference]: Without dead ends: 459407 [2023-04-01 22:45:01,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2108 GetRequests, 2082 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:45:01,780 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 5643 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 11240 mSolverCounterSat, 1901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5643 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 13141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1901 IncrementalHoareTripleChecker+Valid, 11240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:45:01,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5643 Valid, 917 Invalid, 13141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1901 Valid, 11240 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-04-01 22:45:02,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459407 states.