/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/Problem18_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:45:25,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:45:25,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:45:25,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:45:25,640 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 [2023-03-30 23:45:25,663 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:45:25,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:45:25,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:45:25,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:45:25,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:45:25,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:45:25,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:45:25,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:45:25,666 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:45:25,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:45:25,667 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:45:25,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:45:25,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:45:25,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:45:25,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:45:25,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:45:25,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:45:25,668 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:45:25,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:45:25,668 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:45:25,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:45:25,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:45:25,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:45:25,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:45:25,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:45:25,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:45:25,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:45:25,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:45:25,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:45:25,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:45:25,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:45:25,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:45:25,670 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:45:25,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:45:25,670 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:45:25,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:45:25,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:45:25,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:45:25,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:45:25,878 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:45:25,878 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:45:25,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label34.c [2023-03-30 23:45:27,002 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:45:27,255 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:45:27,255 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label34.c [2023-03-30 23:45:27,271 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c609f559/436d5f8dfadb444b99a9f101978000d3/FLAGb8634f43f [2023-03-30 23:45:27,280 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c609f559/436d5f8dfadb444b99a9f101978000d3 [2023-03-30 23:45:27,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:45:27,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:45:27,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:45:27,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:45:27,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:45:27,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:45:27" (1/1) ... [2023-03-30 23:45:27,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798e1c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:27, skipping insertion in model container [2023-03-30 23:45:27,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:45:27" (1/1) ... [2023-03-30 23:45:27,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:45:27,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:45:27,508 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/Problem18_label34.c[1169,1182] [2023-03-30 23:45:28,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:45:28,028 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:45:28,037 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/Problem18_label34.c[1169,1182] [2023-03-30 23:45:28,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:45:28,262 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:45:28,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:28 WrapperNode [2023-03-30 23:45:28,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:45:28,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:45:28,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:45:28,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:45:28,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:28" (1/1) ... [2023-03-30 23:45:28,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:28" (1/1) ... [2023-03-30 23:45:28,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:28" (1/1) ... [2023-03-30 23:45:28,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:28" (1/1) ... [2023-03-30 23:45:28,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:28" (1/1) ... [2023-03-30 23:45:28,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:28" (1/1) ... [2023-03-30 23:45:28,438 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:28" (1/1) ... [2023-03-30 23:45:28,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:28" (1/1) ... [2023-03-30 23:45:28,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:45:28,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:45:28,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:45:28,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:45:28,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:28" (1/1) ... [2023-03-30 23:45:28,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:45:28,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:45:28,498 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) [2023-03-30 23:45:28,499 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 [2023-03-30 23:45:28,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:45:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:45:28,527 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:45:28,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:45:28,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:45:28,527 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 23:45:28,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:45:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:45:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:45:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:45:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:45:28,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:45:28,591 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:45:28,593 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:45:30,695 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:45:30,708 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:45:30,708 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:45:30,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:45:30 BoogieIcfgContainer [2023-03-30 23:45:30,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:45:30,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:45:30,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:45:30,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:45:30,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:45:27" (1/3) ... [2023-03-30 23:45:30,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215a4886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:45:30, skipping insertion in model container [2023-03-30 23:45:30,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:45:28" (2/3) ... [2023-03-30 23:45:30,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215a4886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:45:30, skipping insertion in model container [2023-03-30 23:45:30,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:45:30" (3/3) ... [2023-03-30 23:45:30,716 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label34.c [2023-03-30 23:45:30,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:45:30,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:45:30,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:45:30,794 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;@50680318, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:45:30,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:45:30,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-30 23:45:30,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-03-30 23:45:30,803 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:45:30,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:45:30,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:45:30,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:45:30,807 INFO L85 PathProgramCache]: Analyzing trace with hash 889624934, now seen corresponding path program 1 times [2023-03-30 23:45:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:45:30,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860463515] [2023-03-30 23:45:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:30,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:45:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:45:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:45:31,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:45:31,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860463515] [2023-03-30 23:45:31,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860463515] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:45:31,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:45:31,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:45:31,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305615019] [2023-03-30 23:45:31,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:45:31,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:45:31,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:45:31,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:45:31,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:45:31,128 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-03-30 23:45:34,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:45:34,858 INFO L93 Difference]: Finished difference Result 2286 states and 4364 transitions. [2023-03-30 23:45:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:45:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 13 [2023-03-30 23:45:34,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:45:34,875 INFO L225 Difference]: With dead ends: 2286 [2023-03-30 23:45:34,876 INFO L226 Difference]: Without dead ends: 1432 [2023-03-30 23:45:34,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:45:34,886 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2272 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:45:34,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 38 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 3226 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-03-30 23:45:34,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-03-30 23:45:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1428. [2023-03-30 23:45:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1406 states have (on average 1.5896159317211949) internal successors, (2235), 1408 states have internal predecessors, (2235), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (19), 11 states have call predecessors, (19), 7 states have call successors, (19) [2023-03-30 23:45:34,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2023-03-30 23:45:34,976 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 13 [2023-03-30 23:45:34,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:45:34,976 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2023-03-30 23:45:34,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-03-30 23:45:34,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2023-03-30 23:45:34,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-03-30 23:45:34,979 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:45:34,979 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 23:45:34,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:45:34,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:45:34,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:45:34,980 INFO L85 PathProgramCache]: Analyzing trace with hash -287627059, now seen corresponding path program 1 times [2023-03-30 23:45:34,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:45:34,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540184477] [2023-03-30 23:45:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:34,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:45:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:45:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:35,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:45:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:45:35,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:45:35,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540184477] [2023-03-30 23:45:35,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540184477] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:45:35,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:45:35,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:45:35,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78974821] [2023-03-30 23:45:35,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:45:35,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:45:35,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:45:35,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:45:35,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:45:35,315 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-03-30 23:45:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:45:41,435 INFO L93 Difference]: Finished difference Result 5784 states and 9263 transitions. [2023-03-30 23:45:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-30 23:45:41,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 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 82 [2023-03-30 23:45:41,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:45:41,451 INFO L225 Difference]: With dead ends: 5784 [2023-03-30 23:45:41,451 INFO L226 Difference]: Without dead ends: 4362 [2023-03-30 23:45:41,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:45:41,454 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3829 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 7436 mSolverCounterSat, 1572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3829 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 9008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1572 IncrementalHoareTripleChecker+Valid, 7436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:45:41,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3829 Valid, 120 Invalid, 9008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1572 Valid, 7436 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-03-30 23:45:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2023-03-30 23:45:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4345. [2023-03-30 23:45:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4258 states have (on average 1.3586190699859089) internal successors, (5785), 4274 states have internal predecessors, (5785), 20 states have call successors, (20), 20 states have call predecessors, (20), 66 states have return successors, (175), 50 states have call predecessors, (175), 19 states have call successors, (175) [2023-03-30 23:45:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 5980 transitions. [2023-03-30 23:45:41,553 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 5980 transitions. Word has length 82 [2023-03-30 23:45:41,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:45:41,553 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 5980 transitions. [2023-03-30 23:45:41,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 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) [2023-03-30 23:45:41,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 5980 transitions. [2023-03-30 23:45:41,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-03-30 23:45:41,565 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:45:41,565 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:45:41,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:45:41,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:45:41,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:45:41,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2090294229, now seen corresponding path program 1 times [2023-03-30 23:45:41,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:45:41,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172646310] [2023-03-30 23:45:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:41,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:45:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:41,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:45:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:41,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:45:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:45:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:45:41,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:45:41,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172646310] [2023-03-30 23:45:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172646310] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:45:41,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343864514] [2023-03-30 23:45:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:41,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:45:41,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:45:41,994 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) [2023-03-30 23:45:41,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:45:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:42,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:45:42,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:45:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:45:42,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:45:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:45:42,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343864514] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:45:42,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:45:42,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:45:42,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698832860] [2023-03-30 23:45:42,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:45:42,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:45:42,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:45:42,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:45:42,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:45:42,509 INFO L87 Difference]: Start difference. First operand 4345 states and 5980 transitions. Second operand has 11 states, 11 states have (on average 31.09090909090909) internal successors, (342), 9 states have internal predecessors, (342), 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) [2023-03-30 23:45:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:45:48,858 INFO L93 Difference]: Finished difference Result 14716 states and 20304 transitions. [2023-03-30 23:45:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-30 23:45:48,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 31.09090909090909) internal successors, (342), 9 states have internal predecessors, (342), 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 208 [2023-03-30 23:45:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:45:48,889 INFO L225 Difference]: With dead ends: 14716 [2023-03-30 23:45:48,889 INFO L226 Difference]: Without dead ends: 8832 [2023-03-30 23:45:48,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 420 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-03-30 23:45:48,899 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 3754 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 11933 mSolverCounterSat, 1946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 13879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1946 IncrementalHoareTripleChecker+Valid, 11933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:45:48,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 205 Invalid, 13879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1946 Valid, 11933 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-03-30 23:45:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8832 states. [2023-03-30 23:45:49,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8832 to 7297. [2023-03-30 23:45:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7297 states, 7129 states have (on average 1.1161453219245336) internal successors, (7957), 7172 states have internal predecessors, (7957), 32 states have call successors, (32), 32 states have call predecessors, (32), 135 states have return successors, (343), 92 states have call predecessors, (343), 31 states have call successors, (343) [2023-03-30 23:45:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7297 states to 7297 states and 8332 transitions. [2023-03-30 23:45:49,036 INFO L78 Accepts]: Start accepts. Automaton has 7297 states and 8332 transitions. Word has length 208 [2023-03-30 23:45:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:45:49,037 INFO L495 AbstractCegarLoop]: Abstraction has 7297 states and 8332 transitions. [2023-03-30 23:45:49,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.09090909090909) internal successors, (342), 9 states have internal predecessors, (342), 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) [2023-03-30 23:45:49,038 INFO L276 IsEmpty]: Start isEmpty. Operand 7297 states and 8332 transitions. [2023-03-30 23:45:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-03-30 23:45:49,040 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:45:49,040 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-03-30 23:45:49,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 23:45:49,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:45:49,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:45:49,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:45:49,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1064312006, now seen corresponding path program 1 times [2023-03-30 23:45:49,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:45:49,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401642846] [2023-03-30 23:45:49,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:49,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:45:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:49,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:45:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:49,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:45:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:49,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:45:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-03-30 23:45:49,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:45:49,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401642846] [2023-03-30 23:45:49,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401642846] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:45:49,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110029835] [2023-03-30 23:45:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:49,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:45:49,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:45:49,488 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) [2023-03-30 23:45:49,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:45:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:49,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:45:49,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:45:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-03-30 23:45:49,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:45:49,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110029835] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:45:49,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:45:49,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:45:49,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257730626] [2023-03-30 23:45:49,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:45:49,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:45:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:45:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:45:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:45:49,649 INFO L87 Difference]: Start difference. First operand 7297 states and 8332 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2023-03-30 23:45:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:45:51,092 INFO L93 Difference]: Finished difference Result 14588 states and 16658 transitions. [2023-03-30 23:45:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:45:51,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 241 [2023-03-30 23:45:51,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:45:51,110 INFO L225 Difference]: With dead ends: 14588 [2023-03-30 23:45:51,110 INFO L226 Difference]: Without dead ends: 7297 [2023-03-30 23:45:51,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:45:51,123 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 762 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:45:51,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 944 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-30 23:45:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7297 states. [2023-03-30 23:45:51,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7297 to 7289. [2023-03-30 23:45:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7289 states, 7124 states have (on average 1.0765019651880965) internal successors, (7669), 7166 states have internal predecessors, (7669), 32 states have call successors, (32), 32 states have call predecessors, (32), 132 states have return successors, (244), 90 states have call predecessors, (244), 31 states have call successors, (244) [2023-03-30 23:45:51,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7289 states to 7289 states and 7945 transitions. [2023-03-30 23:45:51,221 INFO L78 Accepts]: Start accepts. Automaton has 7289 states and 7945 transitions. Word has length 241 [2023-03-30 23:45:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:45:51,221 INFO L495 AbstractCegarLoop]: Abstraction has 7289 states and 7945 transitions. [2023-03-30 23:45:51,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2023-03-30 23:45:51,221 INFO L276 IsEmpty]: Start isEmpty. Operand 7289 states and 7945 transitions. [2023-03-30 23:45:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-03-30 23:45:51,225 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:45:51,225 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:45:51,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-30 23:45:51,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-03-30 23:45:51,430 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:45:51,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:45:51,430 INFO L85 PathProgramCache]: Analyzing trace with hash -341327507, now seen corresponding path program 1 times [2023-03-30 23:45:51,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:45:51,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287494411] [2023-03-30 23:45:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:45:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:51,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:45:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:45:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:51,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:45:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-03-30 23:45:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-03-30 23:45:51,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:45:51,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287494411] [2023-03-30 23:45:51,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287494411] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:45:51,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796432382] [2023-03-30 23:45:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:51,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:45:51,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:45:51,671 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) [2023-03-30 23:45:51,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:45:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:51,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:45:51,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:45:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-03-30 23:45:51,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:45:51,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796432382] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:45:51,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:45:51,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:45:51,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242780104] [2023-03-30 23:45:51,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:45:51,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:45:51,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:45:51,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:45:51,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:45:51,791 INFO L87 Difference]: Start difference. First operand 7289 states and 7945 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2023-03-30 23:45:53,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:45:53,405 INFO L93 Difference]: Finished difference Result 18850 states and 20880 transitions. [2023-03-30 23:45:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:45:53,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 310 [2023-03-30 23:45:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:45:53,453 INFO L225 Difference]: With dead ends: 18850 [2023-03-30 23:45:53,453 INFO L226 Difference]: Without dead ends: 11567 [2023-03-30 23:45:53,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:45:53,477 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 712 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-30 23:45:53,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 282 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-30 23:45:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11567 states. [2023-03-30 23:45:53,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11567 to 10865. [2023-03-30 23:45:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10865 states, 10644 states have (on average 1.0697106350995866) internal successors, (11386), 10698 states have internal predecessors, (11386), 47 states have call successors, (47), 47 states have call predecessors, (47), 173 states have return successors, (445), 119 states have call predecessors, (445), 46 states have call successors, (445) [2023-03-30 23:45:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10865 states to 10865 states and 11878 transitions. [2023-03-30 23:45:53,640 INFO L78 Accepts]: Start accepts. Automaton has 10865 states and 11878 transitions. Word has length 310 [2023-03-30 23:45:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:45:53,641 INFO L495 AbstractCegarLoop]: Abstraction has 10865 states and 11878 transitions. [2023-03-30 23:45:53,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2023-03-30 23:45:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 10865 states and 11878 transitions. [2023-03-30 23:45:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-03-30 23:45:53,644 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:45:53,644 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:45:53,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:45:53,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:45:53,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:45:53,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:45:53,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2143521694, now seen corresponding path program 1 times [2023-03-30 23:45:53,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:45:53,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29209141] [2023-03-30 23:45:53,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:53,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:45:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:54,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:45:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:45:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:45:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:54,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-03-30 23:45:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-03-30 23:45:54,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:45:54,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29209141] [2023-03-30 23:45:54,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29209141] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:45:54,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223772723] [2023-03-30 23:45:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:54,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:45:54,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:45:54,272 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) [2023-03-30 23:45:54,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:45:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:54,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:45:54,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:45:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-03-30 23:45:54,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:45:54,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223772723] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:45:54,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:45:54,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:45:54,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839110677] [2023-03-30 23:45:54,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:45:54,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:45:54,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:45:54,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:45:54,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:45:54,419 INFO L87 Difference]: Start difference. First operand 10865 states and 11878 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2023-03-30 23:45:55,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:45:55,981 INFO L93 Difference]: Finished difference Result 25997 states and 28758 transitions. [2023-03-30 23:45:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:45:55,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 329 [2023-03-30 23:45:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:45:56,011 INFO L225 Difference]: With dead ends: 25997 [2023-03-30 23:45:56,012 INFO L226 Difference]: Without dead ends: 15138 [2023-03-30 23:45:56,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:45:56,029 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 725 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:45:56,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 194 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-30 23:45:56,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2023-03-30 23:45:56,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 13727. [2023-03-30 23:45:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13727 states, 13461 states have (on average 1.0728029121164846) internal successors, (14441), 13524 states have internal predecessors, (14441), 59 states have call successors, (59), 59 states have call predecessors, (59), 206 states have return successors, (651), 143 states have call predecessors, (651), 58 states have call successors, (651) [2023-03-30 23:45:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13727 states to 13727 states and 15151 transitions. [2023-03-30 23:45:56,246 INFO L78 Accepts]: Start accepts. Automaton has 13727 states and 15151 transitions. Word has length 329 [2023-03-30 23:45:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:45:56,247 INFO L495 AbstractCegarLoop]: Abstraction has 13727 states and 15151 transitions. [2023-03-30 23:45:56,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2023-03-30 23:45:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 13727 states and 15151 transitions. [2023-03-30 23:45:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-03-30 23:45:56,251 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:45:56,252 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:45:56,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:45:56,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:45:56,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:45:56,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:45:56,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1111474306, now seen corresponding path program 1 times [2023-03-30 23:45:56,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:45:56,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894901724] [2023-03-30 23:45:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:56,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:45:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:56,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:45:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:56,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:45:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:56,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:45:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:56,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-03-30 23:45:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-03-30 23:45:56,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:45:56,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894901724] [2023-03-30 23:45:56,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894901724] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:45:56,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190808272] [2023-03-30 23:45:56,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:56,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:45:56,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:45:56,920 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) [2023-03-30 23:45:56,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:45:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:57,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:45:57,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:45:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-03-30 23:45:57,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:45:57,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190808272] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:45:57,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:45:57,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:45:57,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316709319] [2023-03-30 23:45:57,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:45:57,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:45:57,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:45:57,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:45:57,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:45:57,094 INFO L87 Difference]: Start difference. First operand 13727 states and 15151 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-03-30 23:45:58,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:45:58,969 INFO L93 Difference]: Finished difference Result 39532 states and 44396 transitions. [2023-03-30 23:45:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:45:58,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 391 [2023-03-30 23:45:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:45:59,059 INFO L225 Difference]: With dead ends: 39532 [2023-03-30 23:45:59,060 INFO L226 Difference]: Without dead ends: 25811 [2023-03-30 23:45:59,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:45:59,086 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 699 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:45:59,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1007 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-30 23:45:59,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25811 states. [2023-03-30 23:45:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25811 to 24407. [2023-03-30 23:45:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24407 states, 23991 states have (on average 1.0591471801925723) internal successors, (25410), 24084 states have internal predecessors, (25410), 104 states have call successors, (104), 104 states have call predecessors, (104), 311 states have return successors, (1391), 218 states have call predecessors, (1391), 103 states have call successors, (1391) [2023-03-30 23:45:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24407 states to 24407 states and 26905 transitions. [2023-03-30 23:45:59,398 INFO L78 Accepts]: Start accepts. Automaton has 24407 states and 26905 transitions. Word has length 391 [2023-03-30 23:45:59,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:45:59,398 INFO L495 AbstractCegarLoop]: Abstraction has 24407 states and 26905 transitions. [2023-03-30 23:45:59,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2023-03-30 23:45:59,399 INFO L276 IsEmpty]: Start isEmpty. Operand 24407 states and 26905 transitions. [2023-03-30 23:45:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-03-30 23:45:59,404 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:45:59,404 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2023-03-30 23:45:59,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-03-30 23:45:59,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:45:59,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:45:59,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:45:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1964418959, now seen corresponding path program 1 times [2023-03-30 23:45:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:45:59,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524056292] [2023-03-30 23:45:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:45:59,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:45:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:45:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:45:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:45:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:45:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-03-30 23:45:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:00,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-03-30 23:46:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 305 proven. 11 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-03-30 23:46:00,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:46:00,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524056292] [2023-03-30 23:46:00,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524056292] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:46:00,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329494108] [2023-03-30 23:46:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:46:00,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:46:00,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:46:00,069 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) [2023-03-30 23:46:00,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:46:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:00,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:46:00,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:46:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-03-30 23:46:00,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:46:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-03-30 23:46:00,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329494108] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:46:00,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:46:00,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-03-30 23:46:00,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551044259] [2023-03-30 23:46:00,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:46:00,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-30 23:46:00,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:46:00,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-30 23:46:00,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:46:00,524 INFO L87 Difference]: Start difference. First operand 24407 states and 26905 transitions. Second operand has 13 states, 13 states have (on average 34.84615384615385) internal successors, (453), 11 states have internal predecessors, (453), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:46:03,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:46:03,358 INFO L93 Difference]: Finished difference Result 52496 states and 58062 transitions. [2023-03-30 23:46:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:46:03,358 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 34.84615384615385) internal successors, (453), 11 states have internal predecessors, (453), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 418 [2023-03-30 23:46:03,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:46:03,413 INFO L225 Difference]: With dead ends: 52496 [2023-03-30 23:46:03,413 INFO L226 Difference]: Without dead ends: 28095 [2023-03-30 23:46:03,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 846 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-03-30 23:46:03,448 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6675 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4119 mSolverCounterSat, 1308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6675 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 5427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 4119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:46:03,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6675 Valid, 116 Invalid, 5427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 4119 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-03-30 23:46:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28095 states. [2023-03-30 23:46:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28095 to 28069. [2023-03-30 23:46:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28069 states, 27562 states have (on average 1.047456643204412) internal successors, (28870), 27686 states have internal predecessors, (28870), 119 states have call successors, (119), 119 states have call predecessors, (119), 387 states have return successors, (1459), 263 states have call predecessors, (1459), 118 states have call successors, (1459) [2023-03-30 23:46:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28069 states to 28069 states and 30448 transitions. [2023-03-30 23:46:03,901 INFO L78 Accepts]: Start accepts. Automaton has 28069 states and 30448 transitions. Word has length 418 [2023-03-30 23:46:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:46:03,902 INFO L495 AbstractCegarLoop]: Abstraction has 28069 states and 30448 transitions. [2023-03-30 23:46:03,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 34.84615384615385) internal successors, (453), 11 states have internal predecessors, (453), 5 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:46:03,902 INFO L276 IsEmpty]: Start isEmpty. Operand 28069 states and 30448 transitions. [2023-03-30 23:46:03,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-03-30 23:46:03,913 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:46:03,913 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:46:03,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-30 23:46:04,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:46:04,119 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:46:04,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:46:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash 320124126, now seen corresponding path program 1 times [2023-03-30 23:46:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:46:04,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737557980] [2023-03-30 23:46:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:46:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:46:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:04,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:46:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:04,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:46:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:04,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:46:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:04,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-03-30 23:46:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 141 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-03-30 23:46:04,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:46:04,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737557980] [2023-03-30 23:46:04,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737557980] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:46:04,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539504017] [2023-03-30 23:46:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:46:04,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:46:04,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:46:04,479 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) [2023-03-30 23:46:04,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-03-30 23:46:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:04,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:46:04,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:46:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 23:46:04,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:46:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 142 proven. 94 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-03-30 23:46:05,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539504017] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:46:05,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:46:05,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:46:05,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740818418] [2023-03-30 23:46:05,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:46:05,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:46:05,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:46:05,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:46:05,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:46:05,561 INFO L87 Difference]: Start difference. First operand 28069 states and 30448 transitions. Second operand has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:46:12,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:46:12,273 INFO L93 Difference]: Finished difference Result 90393 states and 100867 transitions. [2023-03-30 23:46:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-30 23:46:12,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 439 [2023-03-30 23:46:12,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:46:12,387 INFO L225 Difference]: With dead ends: 90393 [2023-03-30 23:46:12,387 INFO L226 Difference]: Without dead ends: 62330 [2023-03-30 23:46:12,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 893 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-03-30 23:46:12,413 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 5616 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9428 mSolverCounterSat, 1270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5616 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 10698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1270 IncrementalHoareTripleChecker+Valid, 9428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-03-30 23:46:12,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5616 Valid, 197 Invalid, 10698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1270 Valid, 9428 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-03-30 23:46:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62330 states. [2023-03-30 23:46:13,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62330 to 57401. [2023-03-30 23:46:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57401 states, 56420 states have (on average 1.0494151010280042) internal successors, (59208), 56678 states have internal predecessors, (59208), 242 states have call successors, (242), 242 states have call predecessors, (242), 738 states have return successors, (4339), 480 states have call predecessors, (4339), 241 states have call successors, (4339) [2023-03-30 23:46:13,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57401 states to 57401 states and 63789 transitions. [2023-03-30 23:46:13,426 INFO L78 Accepts]: Start accepts. Automaton has 57401 states and 63789 transitions. Word has length 439 [2023-03-30 23:46:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:46:13,428 INFO L495 AbstractCegarLoop]: Abstraction has 57401 states and 63789 transitions. [2023-03-30 23:46:13,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.58333333333333) internal successors, (847), 10 states have internal predecessors, (847), 5 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:46:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 57401 states and 63789 transitions. [2023-03-30 23:46:13,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2023-03-30 23:46:13,442 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:46:13,442 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:46:13,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-03-30 23:46:13,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:46:13,647 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:46:13,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:46:13,648 INFO L85 PathProgramCache]: Analyzing trace with hash 188164659, now seen corresponding path program 1 times [2023-03-30 23:46:13,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:46:13,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086354954] [2023-03-30 23:46:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:46:13,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:46:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:14,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:46:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:46:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:14,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:46:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-03-30 23:46:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:14,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2023-03-30 23:46:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2023-03-30 23:46:14,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:46:14,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086354954] [2023-03-30 23:46:14,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086354954] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:46:14,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711885117] [2023-03-30 23:46:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:46:14,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:46:14,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:46:14,507 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) [2023-03-30 23:46:14,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-03-30 23:46:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:14,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:46:14,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:46:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-03-30 23:46:14,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:46:14,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711885117] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:46:14,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:46:14,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-03-30 23:46:14,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515434960] [2023-03-30 23:46:14,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:46:14,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:46:14,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:46:14,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:46:14,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:46:14,700 INFO L87 Difference]: Start difference. First operand 57401 states and 63789 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-03-30 23:46:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:46:16,509 INFO L93 Difference]: Finished difference Result 114796 states and 127572 transitions. [2023-03-30 23:46:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:46:16,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 640 [2023-03-30 23:46:16,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:46:16,628 INFO L225 Difference]: With dead ends: 114796 [2023-03-30 23:46:16,628 INFO L226 Difference]: Without dead ends: 57401 [2023-03-30 23:46:16,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:46:16,843 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 800 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:46:16,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 791 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-30 23:46:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57401 states. [2023-03-30 23:46:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57401 to 57401. [2023-03-30 23:46:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57401 states, 56420 states have (on average 1.0434952144629563) internal successors, (58874), 56678 states have internal predecessors, (58874), 242 states have call successors, (242), 242 states have call predecessors, (242), 738 states have return successors, (3849), 480 states have call predecessors, (3849), 241 states have call successors, (3849) [2023-03-30 23:46:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57401 states to 57401 states and 62965 transitions. [2023-03-30 23:46:17,677 INFO L78 Accepts]: Start accepts. Automaton has 57401 states and 62965 transitions. Word has length 640 [2023-03-30 23:46:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:46:17,678 INFO L495 AbstractCegarLoop]: Abstraction has 57401 states and 62965 transitions. [2023-03-30 23:46:17,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-03-30 23:46:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 57401 states and 62965 transitions. [2023-03-30 23:46:17,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2023-03-30 23:46:17,885 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:46:17,885 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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] [2023-03-30 23:46:17,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-03-30 23:46:18,085 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,SelfDestructingSolverStorable9 [2023-03-30 23:46:18,086 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:46:18,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:46:18,087 INFO L85 PathProgramCache]: Analyzing trace with hash -865654609, now seen corresponding path program 1 times [2023-03-30 23:46:18,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:46:18,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411139060] [2023-03-30 23:46:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:46:18,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:46:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:18,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:46:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:46:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:46:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-03-30 23:46:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:18,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2023-03-30 23:46:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:18,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2023-03-30 23:46:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 417 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-03-30 23:46:18,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:46:18,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411139060] [2023-03-30 23:46:18,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411139060] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:46:18,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800740134] [2023-03-30 23:46:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:46:18,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:46:18,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:46:18,683 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) [2023-03-30 23:46:18,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-03-30 23:46:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:18,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:46:18,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:46:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 420 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-03-30 23:46:19,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:46:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 420 proven. 2 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-03-30 23:46:19,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800740134] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:46:19,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:46:19,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:46:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652985908] [2023-03-30 23:46:19,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:46:19,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:46:19,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:46:19,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:46:19,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:46:19,598 INFO L87 Difference]: Start difference. First operand 57401 states and 62965 transitions. Second operand has 11 states, 11 states have (on average 81.18181818181819) internal successors, (893), 9 states have internal predecessors, (893), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-30 23:46:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:46:24,964 INFO L93 Difference]: Finished difference Result 121279 states and 133102 transitions. [2023-03-30 23:46:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-30 23:46:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 81.18181818181819) internal successors, (893), 9 states have internal predecessors, (893), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 712 [2023-03-30 23:46:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:46:25,108 INFO L225 Difference]: With dead ends: 121279 [2023-03-30 23:46:25,109 INFO L226 Difference]: Without dead ends: 60322 [2023-03-30 23:46:25,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1443 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-03-30 23:46:25,170 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 3480 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 11462 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3484 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 12199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 11462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:46:25,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3484 Valid, 236 Invalid, 12199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [737 Valid, 11462 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-03-30 23:46:25,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60322 states. [2023-03-30 23:46:26,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60322 to 54615. [2023-03-30 23:46:26,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54615 states, 53647 states have (on average 1.0290416985106343) internal successors, (55205), 53916 states have internal predecessors, (55205), 230 states have call successors, (230), 230 states have call predecessors, (230), 737 states have return successors, (2599), 468 states have call predecessors, (2599), 229 states have call successors, (2599) [2023-03-30 23:46:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54615 states to 54615 states and 58034 transitions. [2023-03-30 23:46:26,179 INFO L78 Accepts]: Start accepts. Automaton has 54615 states and 58034 transitions. Word has length 712 [2023-03-30 23:46:26,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:46:26,179 INFO L495 AbstractCegarLoop]: Abstraction has 54615 states and 58034 transitions. [2023-03-30 23:46:26,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.18181818181819) internal successors, (893), 9 states have internal predecessors, (893), 4 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-03-30 23:46:26,180 INFO L276 IsEmpty]: Start isEmpty. Operand 54615 states and 58034 transitions. [2023-03-30 23:46:26,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2023-03-30 23:46:26,196 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:46:26,196 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:46:26,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-03-30 23:46:26,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:46:26,420 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:46:26,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:46:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash -497226485, now seen corresponding path program 1 times [2023-03-30 23:46:26,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:46:26,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521978989] [2023-03-30 23:46:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:46:26,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:46:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:27,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:46:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:27,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:46:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:27,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-03-30 23:46:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:27,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-03-30 23:46:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:27,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2023-03-30 23:46:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 260 proven. 6 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-03-30 23:46:28,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:46:28,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521978989] [2023-03-30 23:46:28,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521978989] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:46:28,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615046398] [2023-03-30 23:46:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:46:28,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:46:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:46:28,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:46:28,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-03-30 23:46:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:46:28,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:46:28,305 INFO L285 TraceCheckSpWp]: Computing forward predicates...