/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:37:39,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:37:39,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:37:39,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:37:39,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 22:37:39,187 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:37:39,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:37:39,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:37:39,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:37:39,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:37:39,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:37:39,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:37:39,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:37:39,191 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:37:39,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:37:39,192 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:37:39,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:37:39,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:37:39,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:37:39,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:37:39,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:37:39,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:37:39,193 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:37:39,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:37:39,193 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:37:39,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:37:39,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:37:39,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:37:39,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:37:39,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:37:39,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:37:39,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:37:39,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:37:39,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:37:39,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:37:39,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:37:39,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:37:39,196 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:37:39,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:37:39,196 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:37:39,196 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:37:39,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:37:39,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:37:39,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:37:39,486 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:37:39,486 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:37:39,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label09.c [2023-04-01 22:37:40,613 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:37:41,085 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:37:41,086 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label09.c [2023-04-01 22:37:41,123 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350444b9b/2cebee1f01244125b66cf629fa336f4d/FLAGd58145eb4 [2023-04-01 22:37:41,136 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/350444b9b/2cebee1f01244125b66cf629fa336f4d [2023-04-01 22:37:41,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:37:41,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:37:41,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:37:41,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:37:41,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:37:41,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:37:41" (1/1) ... [2023-04-01 22:37:41,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c801eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:41, skipping insertion in model container [2023-04-01 22:37:41,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:37:41" (1/1) ... [2023-04-01 22:37:41,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:37:41,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:37:41,569 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label09.c[8517,8530] [2023-04-01 22:37:42,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:37:42,371 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:37:42,404 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label09.c[8517,8530] [2023-04-01 22:37:42,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:37:42,961 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:37:42,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:42 WrapperNode [2023-04-01 22:37:42,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:37:42,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:37:42,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:37:42,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:37:42,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:42" (1/1) ... [2023-04-01 22:37:42,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:42" (1/1) ... [2023-04-01 22:37:43,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:42" (1/1) ... [2023-04-01 22:37:43,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:42" (1/1) ... [2023-04-01 22:37:43,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:42" (1/1) ... [2023-04-01 22:37:43,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:42" (1/1) ... [2023-04-01 22:37:43,206 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:42" (1/1) ... [2023-04-01 22:37:43,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:42" (1/1) ... [2023-04-01 22:37:43,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:37:43,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:37:43,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:37:43,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:37:43,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:42" (1/1) ... [2023-04-01 22:37:43,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:37:43,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:37:43,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 22:37:43,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 22:37:43,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:37:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:37:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:37:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:37:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:37:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:37:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:37:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:37:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:37:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:37:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:37:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:37:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:37:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:37:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:37:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:37:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:37:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:37:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:37:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:37:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:37:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:37:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:37:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:37:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:37:43,378 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:37:43,379 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:37:48,078 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:37:48,092 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:37:48,092 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:37:48,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:37:48 BoogieIcfgContainer [2023-04-01 22:37:48,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:37:48,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:37:48,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:37:48,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:37:48,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:37:41" (1/3) ... [2023-04-01 22:37:48,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa3130f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:37:48, skipping insertion in model container [2023-04-01 22:37:48,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:37:42" (2/3) ... [2023-04-01 22:37:48,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa3130f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:37:48, skipping insertion in model container [2023-04-01 22:37:48,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:37:48" (3/3) ... [2023-04-01 22:37:48,101 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09.c [2023-04-01 22:37:48,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:37:48,117 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:37:48,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:37:48,191 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;@3ff305ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:37:48,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:37:48,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:37:48,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-01 22:37:48,210 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:37:48,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:37:48,211 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:37:48,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:37:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2067253665, now seen corresponding path program 1 times [2023-04-01 22:37:48,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:37:48,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666161885] [2023-04-01 22:37:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:37:48,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:37:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:48,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:37:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:37:48,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:37:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666161885] [2023-04-01 22:37:48,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666161885] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:37:48,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:37:48,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 22:37:48,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156831311] [2023-04-01 22:37:48,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:37:48,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 22:37:48,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:37:48,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 22:37:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 22:37:48,804 INFO L87 Difference]: Start difference. First operand has 1119 states, 1105 states have (on average 1.820814479638009) internal successors, (2012), 1106 states have internal predecessors, (2012), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:37:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:37:55,179 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2023-04-01 22:37:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:37:55,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 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 66 [2023-04-01 22:37:55,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:37:55,207 INFO L225 Difference]: With dead ends: 3230 [2023-04-01 22:37:55,208 INFO L226 Difference]: Without dead ends: 2026 [2023-04-01 22:37:55,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:37:55,225 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2999 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4486 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2999 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 5089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 4486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:37:55,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2999 Valid, 300 Invalid, 5089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 4486 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 22:37:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2023-04-01 22:37:55,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2023-04-01 22:37:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1981 states have (on average 1.6436143361938416) internal successors, (3256), 1983 states have internal predecessors, (3256), 10 states have call successors, (10), 10 states have call predecessors, (10), 17 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2023-04-01 22:37:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2023-04-01 22:37:55,364 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 66 [2023-04-01 22:37:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:37:55,365 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2023-04-01 22:37:55,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 22:37:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2023-04-01 22:37:55,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-01 22:37:55,369 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:37:55,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:37:55,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:37:55,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:37:55,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:37:55,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1185751979, now seen corresponding path program 1 times [2023-04-01 22:37:55,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:37:55,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632298106] [2023-04-01 22:37:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:37:55,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:37:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:55,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:37:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:55,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:37:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:37:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:37:55,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:37:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632298106] [2023-04-01 22:37:55,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632298106] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:37:55,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:37:55,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:37:55,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857018432] [2023-04-01 22:37:55,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:37:55,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:37:55,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:37:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:37:55,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:37:55,859 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand has 7 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:38:03,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:38:03,488 INFO L93 Difference]: Finished difference Result 5861 states and 9699 transitions. [2023-04-01 22:38:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:38:03,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 141 [2023-04-01 22:38:03,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:38:03,512 INFO L225 Difference]: With dead ends: 5861 [2023-04-01 22:38:03,512 INFO L226 Difference]: Without dead ends: 3858 [2023-04-01 22:38:03,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:38:03,527 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 3295 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 7735 mSolverCounterSat, 1186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3295 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 8921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 7735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:38:03,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3295 Valid, 815 Invalid, 8921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1186 Valid, 7735 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-04-01 22:38:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2023-04-01 22:38:03,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3760. [2023-04-01 22:38:03,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3688 states have (on average 1.4899674620390455) internal successors, (5495), 3700 states have internal predecessors, (5495), 18 states have call successors, (18), 18 states have call predecessors, (18), 53 states have return successors, (117), 41 states have call predecessors, (117), 17 states have call successors, (117) [2023-04-01 22:38:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 5630 transitions. [2023-04-01 22:38:03,650 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 5630 transitions. Word has length 141 [2023-04-01 22:38:03,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:38:03,652 INFO L495 AbstractCegarLoop]: Abstraction has 3760 states and 5630 transitions. [2023-04-01 22:38:03,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:38:03,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 5630 transitions. [2023-04-01 22:38:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-01 22:38:03,659 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:38:03,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:38:03,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:38:03,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:38:03,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:38:03,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1730163527, now seen corresponding path program 1 times [2023-04-01 22:38:03,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:38:03,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289441467] [2023-04-01 22:38:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:03,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:38:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:38:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:38:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:04,080 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:38:04,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:38:04,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289441467] [2023-04-01 22:38:04,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289441467] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:38:04,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:38:04,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:38:04,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854139742] [2023-04-01 22:38:04,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:38:04,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:38:04,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:38:04,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:38:04,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:38:04,085 INFO L87 Difference]: Start difference. First operand 3760 states and 5630 transitions. Second operand has 8 states, 7 states have (on average 21.285714285714285) internal successors, (149), 5 states have internal predecessors, (149), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:38:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:38:12,284 INFO L93 Difference]: Finished difference Result 14591 states and 22901 transitions. [2023-04-01 22:38:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:38:12,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 21.285714285714285) internal successors, (149), 5 states have internal predecessors, (149), 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 155 [2023-04-01 22:38:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:38:12,339 INFO L225 Difference]: With dead ends: 14591 [2023-04-01 22:38:12,339 INFO L226 Difference]: Without dead ends: 10837 [2023-04-01 22:38:12,353 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 [2023-04-01 22:38:12,357 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 7573 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 7904 mSolverCounterSat, 1988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7573 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 9892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1988 IncrementalHoareTripleChecker+Valid, 7904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:38:12,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7573 Valid, 955 Invalid, 9892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1988 Valid, 7904 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-04-01 22:38:12,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10837 states. [2023-04-01 22:38:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10837 to 10751. [2023-04-01 22:38:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10751 states, 10420 states have (on average 1.3433781190019194) internal successors, (13998), 10488 states have internal predecessors, (13998), 50 states have call successors, (50), 50 states have call predecessors, (50), 280 states have return successors, (1257), 212 states have call predecessors, (1257), 49 states have call successors, (1257) [2023-04-01 22:38:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10751 states to 10751 states and 15305 transitions. [2023-04-01 22:38:12,660 INFO L78 Accepts]: Start accepts. Automaton has 10751 states and 15305 transitions. Word has length 155 [2023-04-01 22:38:12,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:38:12,662 INFO L495 AbstractCegarLoop]: Abstraction has 10751 states and 15305 transitions. [2023-04-01 22:38:12,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 21.285714285714285) internal successors, (149), 5 states have internal predecessors, (149), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:38:12,662 INFO L276 IsEmpty]: Start isEmpty. Operand 10751 states and 15305 transitions. [2023-04-01 22:38:12,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-04-01 22:38:12,665 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:38:12,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:38:12,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:38:12,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:38:12,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:38:12,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1485900244, now seen corresponding path program 1 times [2023-04-01 22:38:12,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:38:12,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051621761] [2023-04-01 22:38:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:12,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:38:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:12,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:38:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:12,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:38:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:38:13,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:38:13,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051621761] [2023-04-01 22:38:13,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051621761] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:38:13,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:38:13,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:38:13,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051775581] [2023-04-01 22:38:13,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:38:13,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:38:13,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:38:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:38:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:38:13,044 INFO L87 Difference]: Start difference. First operand 10751 states and 15305 transitions. Second operand has 8 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:38:20,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:38:20,581 INFO L93 Difference]: Finished difference Result 39561 states and 60675 transitions. [2023-04-01 22:38:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:38:20,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 184 [2023-04-01 22:38:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:38:20,723 INFO L225 Difference]: With dead ends: 39561 [2023-04-01 22:38:20,723 INFO L226 Difference]: Without dead ends: 28816 [2023-04-01 22:38:20,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:38:20,770 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 6987 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 6957 mSolverCounterSat, 2194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6987 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 9151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2194 IncrementalHoareTripleChecker+Valid, 6957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:38:20,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6987 Valid, 673 Invalid, 9151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2194 Valid, 6957 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-04-01 22:38:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28816 states. [2023-04-01 22:38:21,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28816 to 28710. [2023-04-01 22:38:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28710 states, 27783 states have (on average 1.2116402116402116) internal successors, (33663), 28013 states have internal predecessors, (33663), 134 states have call successors, (134), 134 states have call predecessors, (134), 792 states have return successors, (5011), 562 states have call predecessors, (5011), 133 states have call successors, (5011) [2023-04-01 22:38:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28710 states to 28710 states and 38808 transitions. [2023-04-01 22:38:21,623 INFO L78 Accepts]: Start accepts. Automaton has 28710 states and 38808 transitions. Word has length 184 [2023-04-01 22:38:21,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:38:21,624 INFO L495 AbstractCegarLoop]: Abstraction has 28710 states and 38808 transitions. [2023-04-01 22:38:21,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:38:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 28710 states and 38808 transitions. [2023-04-01 22:38:21,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-04-01 22:38:21,631 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:38:21,631 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:38:21,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:38:21,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:38:21,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:38:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1505851653, now seen corresponding path program 1 times [2023-04-01 22:38:21,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:38:21,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517572459] [2023-04-01 22:38:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:21,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:38:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:38:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:38:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:21,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:38:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:38:21,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:38:21,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517572459] [2023-04-01 22:38:21,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517572459] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:38:21,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715991325] [2023-04-01 22:38:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:21,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:38:21,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:38:22,005 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:38:22,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 22:38:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:22,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:38:22,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:38:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:38:22,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:38:22,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715991325] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:38:22,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:38:22,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:38:22,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252113585] [2023-04-01 22:38:22,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:38:22,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:38:22,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:38:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:38:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:38:22,312 INFO L87 Difference]: Start difference. First operand 28710 states and 38808 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:38:26,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:38:26,387 INFO L93 Difference]: Finished difference Result 64221 states and 88794 transitions. [2023-04-01 22:38:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:38:26,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 266 [2023-04-01 22:38:26,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:38:26,621 INFO L225 Difference]: With dead ends: 64221 [2023-04-01 22:38:26,622 INFO L226 Difference]: Without dead ends: 35517 [2023-04-01 22:38:26,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:38:26,679 INFO L413 NwaCegarLoop]: 1900 mSDtfsCounter, 800 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:38:26,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 2073 Invalid, 3202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-01 22:38:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35517 states. [2023-04-01 22:38:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35517 to 35496. [2023-04-01 22:38:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35496 states, 34367 states have (on average 1.1874763581342567) internal successors, (40810), 34651 states have internal predecessors, (40810), 166 states have call successors, (166), 166 states have call predecessors, (166), 962 states have return successors, (6525), 678 states have call predecessors, (6525), 165 states have call successors, (6525) [2023-04-01 22:38:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35496 states to 35496 states and 47501 transitions. [2023-04-01 22:38:27,466 INFO L78 Accepts]: Start accepts. Automaton has 35496 states and 47501 transitions. Word has length 266 [2023-04-01 22:38:27,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:38:27,467 INFO L495 AbstractCegarLoop]: Abstraction has 35496 states and 47501 transitions. [2023-04-01 22:38:27,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:38:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 35496 states and 47501 transitions. [2023-04-01 22:38:27,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-04-01 22:38:27,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:38:27,474 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:38:27,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 22:38:27,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:38:27,685 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:38:27,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:38:27,686 INFO L85 PathProgramCache]: Analyzing trace with hash -697042543, now seen corresponding path program 1 times [2023-04-01 22:38:27,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:38:27,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166921586] [2023-04-01 22:38:27,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:27,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:38:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:28,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:38:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:28,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:38:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:28,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:38:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 119 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:38:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:38:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166921586] [2023-04-01 22:38:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166921586] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:38:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820977473] [2023-04-01 22:38:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:28,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:38:28,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:38:28,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:38:28,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 22:38:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:28,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:38:28,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:38:28,941 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:38:28,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:38:28,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820977473] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:38:28,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:38:28,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2023-04-01 22:38:28,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610215306] [2023-04-01 22:38:28,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:38:28,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:38:28,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:38:28,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:38:28,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:38:28,944 INFO L87 Difference]: Start difference. First operand 35496 states and 47501 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:38:32,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:38:32,062 INFO L93 Difference]: Finished difference Result 70987 states and 95070 transitions. [2023-04-01 22:38:32,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:38:32,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 275 [2023-04-01 22:38:32,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:38:32,176 INFO L225 Difference]: With dead ends: 70987 [2023-04-01 22:38:32,177 INFO L226 Difference]: Without dead ends: 35497 [2023-04-01 22:38:32,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:38:32,228 INFO L413 NwaCegarLoop]: 1409 mSDtfsCounter, 1166 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:38:32,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1514 Invalid, 2905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [447 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 22:38:32,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35497 states. [2023-04-01 22:38:32,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35497 to 33082. [2023-04-01 22:38:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33082 states, 31979 states have (on average 1.1349635698427092) internal successors, (36295), 32262 states have internal predecessors, (36295), 154 states have call successors, (154), 154 states have call predecessors, (154), 948 states have return successors, (4569), 665 states have call predecessors, (4569), 153 states have call successors, (4569) [2023-04-01 22:38:32,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33082 states to 33082 states and 41018 transitions. [2023-04-01 22:38:32,848 INFO L78 Accepts]: Start accepts. Automaton has 33082 states and 41018 transitions. Word has length 275 [2023-04-01 22:38:32,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:38:32,849 INFO L495 AbstractCegarLoop]: Abstraction has 33082 states and 41018 transitions. [2023-04-01 22:38:32,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:38:32,849 INFO L276 IsEmpty]: Start isEmpty. Operand 33082 states and 41018 transitions. [2023-04-01 22:38:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-04-01 22:38:32,857 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:38:32,857 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:38:32,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 22:38:33,063 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,SelfDestructingSolverStorable5 [2023-04-01 22:38:33,065 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:38:33,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:38:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1907312336, now seen corresponding path program 1 times [2023-04-01 22:38:33,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:38:33,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132528597] [2023-04-01 22:38:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:33,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:38:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:38:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:33,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:38:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:33,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:38:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:33,788 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:38:33,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:38:33,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132528597] [2023-04-01 22:38:33,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132528597] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:38:33,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750625086] [2023-04-01 22:38:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:33,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:38:33,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:38:33,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:38:33,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 22:38:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:33,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:38:33,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:38:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-04-01 22:38:34,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:38:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750625086] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:38:34,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:38:34,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 22:38:34,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26573491] [2023-04-01 22:38:34,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:38:34,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:38:34,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:38:34,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:38:34,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:38:34,035 INFO L87 Difference]: Start difference. First operand 33082 states and 41018 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:38:37,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:38:37,676 INFO L93 Difference]: Finished difference Result 91512 states and 116349 transitions. [2023-04-01 22:38:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:38:37,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 288 [2023-04-01 22:38:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:38:37,884 INFO L225 Difference]: With dead ends: 91512 [2023-04-01 22:38:37,887 INFO L226 Difference]: Without dead ends: 58436 [2023-04-01 22:38:37,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:38:37,932 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 978 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:38:37,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 619 Invalid, 3468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 2655 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 22:38:37,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58436 states. [2023-04-01 22:38:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58436 to 49584. [2023-04-01 22:38:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49584 states, 48150 states have (on average 1.13331256490135) internal successors, (54569), 48506 states have internal predecessors, (54569), 234 states have call successors, (234), 234 states have call predecessors, (234), 1199 states have return successors, (7552), 843 states have call predecessors, (7552), 233 states have call successors, (7552) [2023-04-01 22:38:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49584 states to 49584 states and 62355 transitions. [2023-04-01 22:38:39,061 INFO L78 Accepts]: Start accepts. Automaton has 49584 states and 62355 transitions. Word has length 288 [2023-04-01 22:38:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:38:39,061 INFO L495 AbstractCegarLoop]: Abstraction has 49584 states and 62355 transitions. [2023-04-01 22:38:39,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:38:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 49584 states and 62355 transitions. [2023-04-01 22:38:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-04-01 22:38:39,073 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:38:39,074 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:38:39,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 22:38:39,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:38:39,279 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:38:39,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:38:39,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1271302311, now seen corresponding path program 1 times [2023-04-01 22:38:39,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:38:39,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694355247] [2023-04-01 22:38:39,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:39,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:38:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:39,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:38:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:39,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:38:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:38:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:39,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 22:38:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 341 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-04-01 22:38:40,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:38:40,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694355247] [2023-04-01 22:38:40,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694355247] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:38:40,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032652570] [2023-04-01 22:38:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:40,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:38:40,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:38:40,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:38:40,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 22:38:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:40,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:38:40,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:38:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-04-01 22:38:40,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:38:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-04-01 22:38:40,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032652570] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:38:40,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:38:40,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:38:40,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602086868] [2023-04-01 22:38:40,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:38:40,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:38:40,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:38:40,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:38:40,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:38:40,695 INFO L87 Difference]: Start difference. First operand 49584 states and 62355 transitions. Second operand has 12 states, 12 states have (on average 38.5) internal successors, (462), 10 states have internal predecessors, (462), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 22:38:52,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:38:52,060 INFO L93 Difference]: Finished difference Result 113277 states and 146040 transitions. [2023-04-01 22:38:52,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 22:38:52,060 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 38.5) internal successors, (462), 10 states have internal predecessors, (462), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 338 [2023-04-01 22:38:52,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:38:52,272 INFO L225 Difference]: With dead ends: 113277 [2023-04-01 22:38:52,273 INFO L226 Difference]: Without dead ends: 63699 [2023-04-01 22:38:52,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 693 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 22:38:52,467 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 8600 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 14164 mSolverCounterSat, 2992 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8600 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 17156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2992 IncrementalHoareTripleChecker+Valid, 14164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:38:52,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8600 Valid, 1204 Invalid, 17156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2992 Valid, 14164 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-04-01 22:38:52,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63699 states. [2023-04-01 22:38:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63699 to 62781. [2023-04-01 22:38:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62781 states, 60789 states have (on average 1.0939314678642518) internal successors, (66499), 61349 states have internal predecessors, (66499), 294 states have call successors, (294), 294 states have call predecessors, (294), 1697 states have return successors, (8862), 1137 states have call predecessors, (8862), 293 states have call successors, (8862) [2023-04-01 22:38:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62781 states to 62781 states and 75655 transitions. [2023-04-01 22:38:53,812 INFO L78 Accepts]: Start accepts. Automaton has 62781 states and 75655 transitions. Word has length 338 [2023-04-01 22:38:53,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:38:53,813 INFO L495 AbstractCegarLoop]: Abstraction has 62781 states and 75655 transitions. [2023-04-01 22:38:53,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 38.5) internal successors, (462), 10 states have internal predecessors, (462), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 22:38:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 62781 states and 75655 transitions. [2023-04-01 22:38:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-04-01 22:38:53,825 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:38:53,826 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:38:53,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 22:38:54,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:38:54,032 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:38:54,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:38:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash -295579688, now seen corresponding path program 1 times [2023-04-01 22:38:54,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:38:54,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506293105] [2023-04-01 22:38:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:54,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:38:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:38:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:38:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:55,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 22:38:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 119 proven. 100 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:38:55,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:38:55,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506293105] [2023-04-01 22:38:55,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506293105] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:38:55,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178681941] [2023-04-01 22:38:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:38:55,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:38:55,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:38:55,285 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:38:55,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 22:38:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:38:55,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 22:38:55,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:38:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-04-01 22:38:55,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:38:55,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178681941] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:38:55,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:38:55,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2023-04-01 22:38:55,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203389008] [2023-04-01 22:38:55,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:38:55,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:38:55,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:38:55,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:38:55,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:38:55,525 INFO L87 Difference]: Start difference. First operand 62781 states and 75655 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:39:00,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:39:00,067 INFO L93 Difference]: Finished difference Result 166506 states and 205096 transitions. [2023-04-01 22:39:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:39:00,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 338 [2023-04-01 22:39:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:39:00,335 INFO L225 Difference]: With dead ends: 166506 [2023-04-01 22:39:00,335 INFO L226 Difference]: Without dead ends: 103731 [2023-04-01 22:39:00,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:39:00,393 INFO L413 NwaCegarLoop]: 1878 mSDtfsCounter, 844 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 3668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:39:00,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 2036 Invalid, 3668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-01 22:39:00,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103731 states. [2023-04-01 22:39:01,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103731 to 102857. [2023-04-01 22:39:01,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102857 states, 100215 states have (on average 1.0828418899366363) internal successors, (108517), 100900 states have internal predecessors, (108517), 490 states have call successors, (490), 490 states have call predecessors, (490), 2151 states have return successors, (13965), 1466 states have call predecessors, (13965), 489 states have call successors, (13965) [2023-04-01 22:39:02,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102857 states to 102857 states and 122972 transitions. [2023-04-01 22:39:02,090 INFO L78 Accepts]: Start accepts. Automaton has 102857 states and 122972 transitions. Word has length 338 [2023-04-01 22:39:02,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:39:02,091 INFO L495 AbstractCegarLoop]: Abstraction has 102857 states and 122972 transitions. [2023-04-01 22:39:02,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 22:39:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 102857 states and 122972 transitions. [2023-04-01 22:39:02,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-04-01 22:39:02,121 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:39:02,121 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2023-04-01 22:39:02,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 22:39:02,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:39:02,326 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:39:02,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:39:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1679846708, now seen corresponding path program 1 times [2023-04-01 22:39:02,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:39:02,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93370042] [2023-04-01 22:39:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:39:02,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:39:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:03,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:39:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:39:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:03,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:39:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:03,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-01 22:39:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:03,873 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 182 proven. 284 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:39:03,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:39:03,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93370042] [2023-04-01 22:39:03,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93370042] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:39:03,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662491115] [2023-04-01 22:39:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:39:03,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:39:03,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:39:03,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:39:03,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 22:39:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:04,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 22:39:04,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:39:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 22:39:04,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:39:04,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662491115] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:39:04,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:39:04,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-01 22:39:04,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667496436] [2023-04-01 22:39:04,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:39:04,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:39:04,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:39:04,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:39:04,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:39:04,444 INFO L87 Difference]: Start difference. First operand 102857 states and 122972 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:39:07,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:39:07,092 INFO L93 Difference]: Finished difference Result 205683 states and 246065 transitions. [2023-04-01 22:39:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:39:07,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 439 [2023-04-01 22:39:07,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:39:07,372 INFO L225 Difference]: With dead ends: 205683 [2023-04-01 22:39:07,372 INFO L226 Difference]: Without dead ends: 102832 [2023-04-01 22:39:07,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:39:07,564 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 1681 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:39:07,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 339 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 22:39:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102832 states. [2023-04-01 22:39:08,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102832 to 102830. [2023-04-01 22:39:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102830 states, 100191 states have (on average 1.0826720962960745) internal successors, (108474), 100874 states have internal predecessors, (108474), 490 states have call successors, (490), 490 states have call predecessors, (490), 2148 states have return successors, (13920), 1465 states have call predecessors, (13920), 489 states have call successors, (13920) [2023-04-01 22:39:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102830 states to 102830 states and 122884 transitions. [2023-04-01 22:39:09,414 INFO L78 Accepts]: Start accepts. Automaton has 102830 states and 122884 transitions. Word has length 439 [2023-04-01 22:39:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:39:09,415 INFO L495 AbstractCegarLoop]: Abstraction has 102830 states and 122884 transitions. [2023-04-01 22:39:09,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:39:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 102830 states and 122884 transitions. [2023-04-01 22:39:09,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-04-01 22:39:09,436 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:39:09,437 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2023-04-01 22:39:09,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 22:39:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:39:09,643 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:39:09,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:39:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash -128286595, now seen corresponding path program 1 times [2023-04-01 22:39:09,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:39:09,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026076176] [2023-04-01 22:39:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:39:09,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:39:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:10,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:39:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:39:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:10,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-01 22:39:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-04-01 22:39:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 182 proven. 284 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 22:39:10,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:39:10,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026076176] [2023-04-01 22:39:10,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026076176] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:39:10,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846648506] [2023-04-01 22:39:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:39:10,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:39:10,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:39:10,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:39:10,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 22:39:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:11,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:39:11,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:39:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:39:11,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:39:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:39:11,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846648506] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:39:11,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:39:11,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2023-04-01 22:39:11,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823310281] [2023-04-01 22:39:11,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:39:11,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 22:39:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:39:11,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 22:39:11,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:39:11,855 INFO L87 Difference]: Start difference. First operand 102830 states and 122884 transitions. Second operand has 16 states, 16 states have (on average 48.1875) internal successors, (771), 14 states have internal predecessors, (771), 5 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 22:39:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:39:36,636 INFO L93 Difference]: Finished difference Result 308460 states and 367562 transitions. [2023-04-01 22:39:36,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-04-01 22:39:36,637 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 48.1875) internal successors, (771), 14 states have internal predecessors, (771), 5 states have call successors, (11), 7 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 443 [2023-04-01 22:39:36,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:39:37,148 INFO L225 Difference]: With dead ends: 308460 [2023-04-01 22:39:37,148 INFO L226 Difference]: Without dead ends: 201533 [2023-04-01 22:39:37,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1099 GetRequests, 981 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5277 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1502, Invalid=12540, Unknown=0, NotChecked=0, Total=14042 [2023-04-01 22:39:37,323 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 50651 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 32429 mSolverCounterSat, 5488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50651 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 37917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5488 IncrementalHoareTripleChecker+Valid, 32429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:39:37,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50651 Valid, 2286 Invalid, 37917 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5488 Valid, 32429 Invalid, 0 Unknown, 0 Unchecked, 20.4s Time] [2023-04-01 22:39:37,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201533 states. [2023-04-01 22:39:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201533 to 192565. [2023-04-01 22:39:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192565 states, 188751 states have (on average 1.0469825325428739) internal successors, (197619), 189598 states have internal predecessors, (197619), 953 states have call successors, (953), 934 states have call predecessors, (953), 2860 states have return successors, (17418), 2032 states have call predecessors, (17418), 952 states have call successors, (17418) [2023-04-01 22:39:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192565 states to 192565 states and 215990 transitions. [2023-04-01 22:39:40,314 INFO L78 Accepts]: Start accepts. Automaton has 192565 states and 215990 transitions. Word has length 443 [2023-04-01 22:39:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:39:40,314 INFO L495 AbstractCegarLoop]: Abstraction has 192565 states and 215990 transitions. [2023-04-01 22:39:40,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 48.1875) internal successors, (771), 14 states have internal predecessors, (771), 5 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 22:39:40,315 INFO L276 IsEmpty]: Start isEmpty. Operand 192565 states and 215990 transitions. [2023-04-01 22:39:40,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2023-04-01 22:39:40,359 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:39:40,359 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:39:40,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 22:39:40,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:39:40,563 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:39:40,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:39:40,563 INFO L85 PathProgramCache]: Analyzing trace with hash 68067663, now seen corresponding path program 1 times [2023-04-01 22:39:40,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:39:40,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179903681] [2023-04-01 22:39:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:39:40,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:39:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:41,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:39:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:39:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 22:39:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-04-01 22:39:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:41,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-04-01 22:39:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:41,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:39:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2023-04-01 22:39:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:39:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179903681] [2023-04-01 22:39:41,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179903681] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:39:41,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:39:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:39:41,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597731041] [2023-04-01 22:39:41,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:39:41,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 22:39:41,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:39:41,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 22:39:41,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:39:41,553 INFO L87 Difference]: Start difference. First operand 192565 states and 215990 transitions. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 4 states have internal predecessors, (371), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 22:39:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:39:49,052 INFO L93 Difference]: Finished difference Result 375115 states and 421574 transitions. [2023-04-01 22:39:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:39:49,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 4 states have internal predecessors, (371), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 670 [2023-04-01 22:39:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:39:49,645 INFO L225 Difference]: With dead ends: 375115 [2023-04-01 22:39:49,645 INFO L226 Difference]: Without dead ends: 182568 [2023-04-01 22:39:49,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:39:49,758 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 3826 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 8453 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 8753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 8453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:39:49,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3826 Valid, 560 Invalid, 8753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 8453 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-01 22:39:49,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182568 states. [2023-04-01 22:39:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182568 to 182530. [2023-04-01 22:39:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182530 states, 178937 states have (on average 1.043356041511817) internal successors, (186695), 179723 states have internal predecessors, (186695), 903 states have call successors, (903), 886 states have call predecessors, (903), 2689 states have return successors, (14843), 1920 states have call predecessors, (14843), 902 states have call successors, (14843) [2023-04-01 22:39:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182530 states to 182530 states and 202441 transitions. [2023-04-01 22:39:52,527 INFO L78 Accepts]: Start accepts. Automaton has 182530 states and 202441 transitions. Word has length 670 [2023-04-01 22:39:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:39:52,528 INFO L495 AbstractCegarLoop]: Abstraction has 182530 states and 202441 transitions. [2023-04-01 22:39:52,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 4 states have internal predecessors, (371), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-04-01 22:39:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 182530 states and 202441 transitions. [2023-04-01 22:39:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-04-01 22:39:52,589 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:39:52,590 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:39:52,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 22:39:52,590 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:39:52,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:39:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash -825228411, now seen corresponding path program 1 times [2023-04-01 22:39:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:39:52,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577563617] [2023-04-01 22:39:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:39:52,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:39:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:53,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:39:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:53,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:39:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:53,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-01 22:39:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-04-01 22:39:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:53,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-04-01 22:39:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2023-04-01 22:39:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:53,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:39:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 620 proven. 2 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2023-04-01 22:39:53,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:39:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577563617] [2023-04-01 22:39:53,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577563617] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:39:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697086595] [2023-04-01 22:39:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:39:53,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:39:53,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:39:53,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:39:53,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 22:39:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:39:54,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:39:54,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:39:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 624 proven. 2 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2023-04-01 22:39:54,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:39:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 624 proven. 2 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2023-04-01 22:39:55,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697086595] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:39:55,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:39:55,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:39:55,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693653370] [2023-04-01 22:39:55,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:39:55,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:39:55,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:39:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:39:55,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:39:55,506 INFO L87 Difference]: Start difference. First operand 182530 states and 202441 transitions. Second operand has 11 states, 11 states have (on average 99.54545454545455) internal successors, (1095), 9 states have internal predecessors, (1095), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 22:40:07,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:40:07,193 INFO L93 Difference]: Finished difference Result 366922 states and 413387 transitions. [2023-04-01 22:40:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:40:07,193 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 99.54545454545455) internal successors, (1095), 9 states have internal predecessors, (1095), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 705 [2023-04-01 22:40:07,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:40:07,965 INFO L225 Difference]: With dead ends: 366922 [2023-04-01 22:40:07,965 INFO L226 Difference]: Without dead ends: 182757 [2023-04-01 22:40:08,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1449 GetRequests, 1427 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:40:08,092 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 5835 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 15670 mSolverCounterSat, 1468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5838 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 17138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1468 IncrementalHoareTripleChecker+Valid, 15670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:40:08,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5838 Valid, 1012 Invalid, 17138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1468 Valid, 15670 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-04-01 22:40:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182757 states. [2023-04-01 22:40:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182757 to 180901. [2023-04-01 22:40:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180901 states, 176848 states have (on average 1.032903962725052) internal successors, (182667), 177777 states have internal predecessors, (182667), 1079 states have call successors, (1079), 870 states have call predecessors, (1079), 2973 states have return successors, (15983), 2253 states have call predecessors, (15983), 1078 states have call successors, (15983) [2023-04-01 22:40:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180901 states to 180901 states and 199729 transitions. [2023-04-01 22:40:11,933 INFO L78 Accepts]: Start accepts. Automaton has 180901 states and 199729 transitions. Word has length 705 [2023-04-01 22:40:11,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:40:11,934 INFO L495 AbstractCegarLoop]: Abstraction has 180901 states and 199729 transitions. [2023-04-01 22:40:11,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 99.54545454545455) internal successors, (1095), 9 states have internal predecessors, (1095), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 22:40:11,935 INFO L276 IsEmpty]: Start isEmpty. Operand 180901 states and 199729 transitions. [2023-04-01 22:40:12,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2023-04-01 22:40:12,361 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:40:12,361 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2023-04-01 22:40:12,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 22:40:12,563 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,SelfDestructingSolverStorable12 [2023-04-01 22:40:12,564 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:40:12,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:40:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1477638492, now seen corresponding path program 1 times [2023-04-01 22:40:12,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:40:12,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895541802] [2023-04-01 22:40:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:40:12,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:40:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:40:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:40:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-01 22:40:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-04-01 22:40:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:13,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2023-04-01 22:40:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:40:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 370 proven. 552 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-04-01 22:40:14,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:40:14,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895541802] [2023-04-01 22:40:14,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895541802] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:40:14,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86141619] [2023-04-01 22:40:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:40:14,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:40:14,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:40:14,144 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:40:14,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 22:40:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:40:14,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 22:40:14,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:40:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 813 proven. 2 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-04-01 22:40:16,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:40:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 245 proven. 682 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-04-01 22:40:21,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86141619] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:40:21,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:40:21,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-04-01 22:40:21,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448048756] [2023-04-01 22:40:21,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:40:21,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-04-01 22:40:21,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:40:21,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-04-01 22:40:21,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2023-04-01 22:40:21,109 INFO L87 Difference]: Start difference. First operand 180901 states and 199729 transitions. Second operand has 25 states, 25 states have (on average 63.12) internal successors, (1578), 23 states have internal predecessors, (1578), 8 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13)