/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/Problem11_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:16:18,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:16:18,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:16:18,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:16:18,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:16:18,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:16:18,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:16:18,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 23:16:18,228 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:16:18,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:16:18,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:16:18,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:16:18,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:16:18,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:16:18,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:16:18,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:16:18,231 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:16:18,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:16:18,232 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:16:18,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:16:18,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:16:18,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:16:18,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:16:18,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:16:18,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:16:18,233 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:16:18,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:16:18,233 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:16:18,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:16:18,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:16:18,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:16:18,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:16:18,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:16:18,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:16:18,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:16:18,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:16:18,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:16:18,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:16:18,235 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:16:18,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:16:18,235 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:16:18,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:16:18,235 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:16:18,235 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:16:18,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:16:18,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:16:18,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:16:18,478 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:16:18,478 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:16:18,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label24.c [2023-03-30 23:16:19,588 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:16:19,875 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:16:19,876 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label24.c [2023-03-30 23:16:19,889 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64201ee90/34fbc4cdbc2c4f9ab4e82c9300883e71/FLAGc265d1231 [2023-03-30 23:16:19,909 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64201ee90/34fbc4cdbc2c4f9ab4e82c9300883e71 [2023-03-30 23:16:19,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:16:19,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:16:19,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:16:19,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:16:19,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:16:19,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:16:19" (1/1) ... [2023-03-30 23:16:19,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c3f526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:19, skipping insertion in model container [2023-03-30 23:16:19,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:16:19" (1/1) ... [2023-03-30 23:16:19,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:16:19,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:16:20,164 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/Problem11_label24.c[7451,7464] [2023-03-30 23:16:20,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:16:20,451 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:16:20,501 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/Problem11_label24.c[7451,7464] [2023-03-30 23:16:20,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:16:20,657 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:16:20,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:20 WrapperNode [2023-03-30 23:16:20,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:16:20,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:16:20,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:16:20,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:16:20,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:20" (1/1) ... [2023-03-30 23:16:20,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:20" (1/1) ... [2023-03-30 23:16:20,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:20" (1/1) ... [2023-03-30 23:16:20,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:20" (1/1) ... [2023-03-30 23:16:20,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:20" (1/1) ... [2023-03-30 23:16:20,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:20" (1/1) ... [2023-03-30 23:16:20,776 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:20" (1/1) ... [2023-03-30 23:16:20,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:20" (1/1) ... [2023-03-30 23:16:20,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:16:20,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:16:20,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:16:20,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:16:20,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:20" (1/1) ... [2023-03-30 23:16:20,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:16:20,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:20,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 23:16:20,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 23:16:20,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:16:20,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:16:20,874 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:16:20,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:16:20,874 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:16:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:16:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:16:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:16:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:16:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:16:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:16:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:16:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:16:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:16:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:16:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:16:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:16:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:16:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:16:20,958 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:16:20,960 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:16:22,434 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:16:22,450 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:16:22,450 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:16:22,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:16:22 BoogieIcfgContainer [2023-03-30 23:16:22,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:16:22,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:16:22,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:16:22,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:16:22,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:16:19" (1/3) ... [2023-03-30 23:16:22,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c68df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:16:22, skipping insertion in model container [2023-03-30 23:16:22,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:16:20" (2/3) ... [2023-03-30 23:16:22,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c68df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:16:22, skipping insertion in model container [2023-03-30 23:16:22,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:16:22" (3/3) ... [2023-03-30 23:16:22,462 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label24.c [2023-03-30 23:16:22,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:16:22,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:16:22,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:16:22,554 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;@4cd968af, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:16:22,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:16:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 292 states, 284 states have (on average 1.7077464788732395) internal successors, (485), 285 states have internal predecessors, (485), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:16:22,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-03-30 23:16:22,573 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:22,574 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] [2023-03-30 23:16:22,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:22,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash 861923170, now seen corresponding path program 1 times [2023-03-30 23:16:22,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:22,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695984753] [2023-03-30 23:16:22,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:22,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:23,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:23,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:23,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695984753] [2023-03-30 23:16:23,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695984753] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:23,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:16:23,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:16:23,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684629613] [2023-03-30 23:16:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:23,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:16:23,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:23,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:16:23,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:16:23,250 INFO L87 Difference]: Start difference. First operand has 292 states, 284 states have (on average 1.7077464788732395) internal successors, (485), 285 states have internal predecessors, (485), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:16:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:25,020 INFO L93 Difference]: Finished difference Result 793 states and 1394 transitions. [2023-03-30 23:16:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:16:25,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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 57 [2023-03-30 23:16:25,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:25,035 INFO L225 Difference]: With dead ends: 793 [2023-03-30 23:16:25,035 INFO L226 Difference]: Without dead ends: 437 [2023-03-30 23:16:25,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:16:25,045 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 798 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:25,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 60 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-03-30 23:16:25,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-03-30 23:16:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 422. [2023-03-30 23:16:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 413 states have (on average 1.6053268765133173) internal successors, (663), 414 states have internal predecessors, (663), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-03-30 23:16:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 673 transitions. [2023-03-30 23:16:25,111 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 673 transitions. Word has length 57 [2023-03-30 23:16:25,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:25,112 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 673 transitions. [2023-03-30 23:16:25,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:16:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 673 transitions. [2023-03-30 23:16:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-03-30 23:16:25,117 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:25,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:25,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:16:25,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:25,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:25,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2029413277, now seen corresponding path program 1 times [2023-03-30 23:16:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:25,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275136741] [2023-03-30 23:16:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:25,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:25,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:25,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:25,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275136741] [2023-03-30 23:16:25,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275136741] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:25,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:16:25,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:16:25,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815459888] [2023-03-30 23:16:25,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:25,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:16:25,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:25,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:16:25,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:16:25,562 INFO L87 Difference]: Start difference. First operand 422 states and 673 transitions. Second operand has 7 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:27,085 INFO L93 Difference]: Finished difference Result 1266 states and 2057 transitions. [2023-03-30 23:16:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:16:27,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 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 126 [2023-03-30 23:16:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:27,092 INFO L225 Difference]: With dead ends: 1266 [2023-03-30 23:16:27,092 INFO L226 Difference]: Without dead ends: 850 [2023-03-30 23:16:27,094 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 [2023-03-30 23:16:27,095 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 684 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:27,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 122 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-30 23:16:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2023-03-30 23:16:27,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 824. [2023-03-30 23:16:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 803 states have (on average 1.4259028642590286) internal successors, (1145), 812 states have internal predecessors, (1145), 6 states have call successors, (6), 6 states have call predecessors, (6), 14 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2023-03-30 23:16:27,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1180 transitions. [2023-03-30 23:16:27,148 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1180 transitions. Word has length 126 [2023-03-30 23:16:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:27,148 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1180 transitions. [2023-03-30 23:16:27,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1180 transitions. [2023-03-30 23:16:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-03-30 23:16:27,153 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:27,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:27,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:16:27,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:27,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:27,154 INFO L85 PathProgramCache]: Analyzing trace with hash 831728102, now seen corresponding path program 1 times [2023-03-30 23:16:27,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:27,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407191594] [2023-03-30 23:16:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:27,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:27,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:27,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407191594] [2023-03-30 23:16:27,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407191594] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:27,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:16:27,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:16:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118209671] [2023-03-30 23:16:27,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:27,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:16:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:16:27,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:16:27,465 INFO L87 Difference]: Start difference. First operand 824 states and 1180 transitions. Second operand has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:29,583 INFO L93 Difference]: Finished difference Result 2480 states and 3693 transitions. [2023-03-30 23:16:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-30 23:16:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 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 129 [2023-03-30 23:16:29,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:29,592 INFO L225 Difference]: With dead ends: 2480 [2023-03-30 23:16:29,592 INFO L226 Difference]: Without dead ends: 1662 [2023-03-30 23:16:29,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-03-30 23:16:29,596 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 1258 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:29,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 147 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-03-30 23:16:29,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2023-03-30 23:16:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1624. [2023-03-30 23:16:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1573 states have (on average 1.3356643356643356) internal successors, (2101), 1604 states have internal predecessors, (2101), 10 states have call successors, (10), 10 states have call predecessors, (10), 40 states have return successors, (123), 9 states have call predecessors, (123), 9 states have call successors, (123) [2023-03-30 23:16:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2234 transitions. [2023-03-30 23:16:29,659 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2234 transitions. Word has length 129 [2023-03-30 23:16:29,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:29,659 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2234 transitions. [2023-03-30 23:16:29,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:29,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2234 transitions. [2023-03-30 23:16:29,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-03-30 23:16:29,662 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:29,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:29,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:16:29,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:29,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:29,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1316410923, now seen corresponding path program 1 times [2023-03-30 23:16:29,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:29,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282066245] [2023-03-30 23:16:29,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:29,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:30,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:30,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:30,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:30,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282066245] [2023-03-30 23:16:30,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282066245] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:30,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948101521] [2023-03-30 23:16:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:30,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:30,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:30,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:16:30,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:16:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:30,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:16:30,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:30,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:16:30,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948101521] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:30,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:16:30,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-03-30 23:16:30,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511350942] [2023-03-30 23:16:30,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:30,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:16:30,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:30,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:16:30,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:16:30,886 INFO L87 Difference]: Start difference. First operand 1624 states and 2234 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:32,041 INFO L93 Difference]: Finished difference Result 3872 states and 5340 transitions. [2023-03-30 23:16:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:16:32,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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 130 [2023-03-30 23:16:32,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:32,051 INFO L225 Difference]: With dead ends: 3872 [2023-03-30 23:16:32,051 INFO L226 Difference]: Without dead ends: 2254 [2023-03-30 23:16:32,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:16:32,057 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 494 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:32,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 126 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-30 23:16:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2023-03-30 23:16:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2212. [2023-03-30 23:16:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2143 states have (on average 1.2575828278114793) internal successors, (2695), 2186 states have internal predecessors, (2695), 13 states have call successors, (13), 13 states have call predecessors, (13), 55 states have return successors, (185), 12 states have call predecessors, (185), 12 states have call successors, (185) [2023-03-30 23:16:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2893 transitions. [2023-03-30 23:16:32,124 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2893 transitions. Word has length 130 [2023-03-30 23:16:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:32,124 INFO L495 AbstractCegarLoop]: Abstraction has 2212 states and 2893 transitions. [2023-03-30 23:16:32,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:32,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2893 transitions. [2023-03-30 23:16:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-03-30 23:16:32,127 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:32,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:32,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:32,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:32,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:32,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:32,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1943043410, now seen corresponding path program 1 times [2023-03-30 23:16:32,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:32,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321835765] [2023-03-30 23:16:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:32,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:32,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:32,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:16:32,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321835765] [2023-03-30 23:16:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321835765] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:32,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:16:32,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-30 23:16:32,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106353703] [2023-03-30 23:16:32,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:32,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:16:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:32,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:16:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:16:32,676 INFO L87 Difference]: Start difference. First operand 2212 states and 2893 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 3 states have internal predecessors, (182), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:34,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:34,036 INFO L93 Difference]: Finished difference Result 5570 states and 7633 transitions. [2023-03-30 23:16:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:16:34,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 3 states have internal predecessors, (182), 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 188 [2023-03-30 23:16:34,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:34,053 INFO L225 Difference]: With dead ends: 5570 [2023-03-30 23:16:34,054 INFO L226 Difference]: Without dead ends: 3552 [2023-03-30 23:16:34,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:16:34,060 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 636 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:34,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 75 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-30 23:16:34,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2023-03-30 23:16:34,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3358. [2023-03-30 23:16:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3358 states, 3268 states have (on average 1.214810281517748) internal successors, (3970), 3320 states have internal predecessors, (3970), 19 states have call successors, (19), 19 states have call predecessors, (19), 70 states have return successors, (299), 18 states have call predecessors, (299), 18 states have call successors, (299) [2023-03-30 23:16:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3358 states to 3358 states and 4288 transitions. [2023-03-30 23:16:34,163 INFO L78 Accepts]: Start accepts. Automaton has 3358 states and 4288 transitions. Word has length 188 [2023-03-30 23:16:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:34,164 INFO L495 AbstractCegarLoop]: Abstraction has 3358 states and 4288 transitions. [2023-03-30 23:16:34,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 3 states have internal predecessors, (182), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:34,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3358 states and 4288 transitions. [2023-03-30 23:16:34,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-03-30 23:16:34,168 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:34,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:34,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-30 23:16:34,169 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:34,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:34,169 INFO L85 PathProgramCache]: Analyzing trace with hash 626603689, now seen corresponding path program 1 times [2023-03-30 23:16:34,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:34,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424192671] [2023-03-30 23:16:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:34,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-30 23:16:34,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:34,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424192671] [2023-03-30 23:16:34,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424192671] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:34,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126891222] [2023-03-30 23:16:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:34,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:34,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:34,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:16:34,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:16:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:34,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 8 conjunts are in the unsatisfiable core [2023-03-30 23:16:34,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-30 23:16:35,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:16:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-30 23:16:35,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126891222] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:35,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-30 23:16:35,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-03-30 23:16:35,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663070361] [2023-03-30 23:16:35,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:35,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:16:35,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:35,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:16:35,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-03-30 23:16:35,739 INFO L87 Difference]: Start difference. First operand 3358 states and 4288 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:36,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:36,509 INFO L93 Difference]: Finished difference Result 4346 states and 5636 transitions. [2023-03-30 23:16:36,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-30 23:16:36,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 204 [2023-03-30 23:16:36,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:36,529 INFO L225 Difference]: With dead ends: 4346 [2023-03-30 23:16:36,529 INFO L226 Difference]: Without dead ends: 4344 [2023-03-30 23:16:36,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-03-30 23:16:36,532 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 365 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:36,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 81 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-30 23:16:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2023-03-30 23:16:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 4145. [2023-03-30 23:16:36,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4030 states have (on average 1.2069478908188587) internal successors, (4864), 4099 states have internal predecessors, (4864), 23 states have call successors, (23), 23 states have call predecessors, (23), 91 states have return successors, (468), 22 states have call predecessors, (468), 22 states have call successors, (468) [2023-03-30 23:16:36,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 5355 transitions. [2023-03-30 23:16:36,640 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 5355 transitions. Word has length 204 [2023-03-30 23:16:36,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:36,641 INFO L495 AbstractCegarLoop]: Abstraction has 4145 states and 5355 transitions. [2023-03-30 23:16:36,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 3 states have internal predecessors, (196), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:16:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 5355 transitions. [2023-03-30 23:16:36,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-03-30 23:16:36,645 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:36,645 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, 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] [2023-03-30 23:16:36,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:36,851 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 [2023-03-30 23:16:36,851 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:36,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2099590527, now seen corresponding path program 1 times [2023-03-30 23:16:36,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:36,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19410731] [2023-03-30 23:16:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:36,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:37,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:37,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:37,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:16:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 122 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-30 23:16:37,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:37,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19410731] [2023-03-30 23:16:37,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19410731] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:37,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653094677] [2023-03-30 23:16:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:37,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:37,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:37,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:16:37,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:16:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:37,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 12 conjunts are in the unsatisfiable core [2023-03-30 23:16:37,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:16:39,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:16:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-03-30 23:16:40,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653094677] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:16:40,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:16:40,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 16 [2023-03-30 23:16:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155170689] [2023-03-30 23:16:40,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:16:40,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-03-30 23:16:40,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:40,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-03-30 23:16:40,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:16:40,117 INFO L87 Difference]: Start difference. First operand 4145 states and 5355 transitions. Second operand has 16 states, 16 states have (on average 36.0) internal successors, (576), 14 states have internal predecessors, (576), 7 states have call successors, (12), 10 states have call predecessors, (12), 9 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2023-03-30 23:16:47,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:47,432 INFO L93 Difference]: Finished difference Result 19108 states and 26438 transitions. [2023-03-30 23:16:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-03-30 23:16:47,432 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 36.0) internal successors, (576), 14 states have internal predecessors, (576), 7 states have call successors, (12), 10 states have call predecessors, (12), 9 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) Word has length 246 [2023-03-30 23:16:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:47,517 INFO L225 Difference]: With dead ends: 19108 [2023-03-30 23:16:47,517 INFO L226 Difference]: Without dead ends: 15157 [2023-03-30 23:16:47,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2600 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1423, Invalid=5887, Unknown=0, NotChecked=0, Total=7310 [2023-03-30 23:16:47,536 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 5048 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 6230 mSolverCounterSat, 1360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5048 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 7590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1360 IncrementalHoareTripleChecker+Valid, 6230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:47,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5048 Valid, 419 Invalid, 7590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1360 Valid, 6230 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-03-30 23:16:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15157 states. [2023-03-30 23:16:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15157 to 13390. [2023-03-30 23:16:47,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13390 states, 13074 states have (on average 1.1726327061343125) internal successors, (15331), 13248 states have internal predecessors, (15331), 71 states have call successors, (71), 71 states have call predecessors, (71), 244 states have return successors, (1891), 70 states have call predecessors, (1891), 70 states have call successors, (1891) [2023-03-30 23:16:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13390 states to 13390 states and 17293 transitions. [2023-03-30 23:16:47,959 INFO L78 Accepts]: Start accepts. Automaton has 13390 states and 17293 transitions. Word has length 246 [2023-03-30 23:16:47,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:47,960 INFO L495 AbstractCegarLoop]: Abstraction has 13390 states and 17293 transitions. [2023-03-30 23:16:47,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 36.0) internal successors, (576), 14 states have internal predecessors, (576), 7 states have call successors, (12), 10 states have call predecessors, (12), 9 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2023-03-30 23:16:47,961 INFO L276 IsEmpty]: Start isEmpty. Operand 13390 states and 17293 transitions. [2023-03-30 23:16:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-03-30 23:16:47,975 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:47,975 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:48,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-03-30 23:16:48,180 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 [2023-03-30 23:16:48,181 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:48,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:48,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1316029439, now seen corresponding path program 1 times [2023-03-30 23:16:48,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:48,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414028536] [2023-03-30 23:16:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:48,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:48,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:48,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-03-30 23:16:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:48,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-03-30 23:16:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 237 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-03-30 23:16:48,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:48,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414028536] [2023-03-30 23:16:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414028536] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:48,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402500171] [2023-03-30 23:16:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:48,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:48,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:48,788 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:16:48,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:16:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:48,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 13 conjunts are in the unsatisfiable core [2023-03-30 23:16:48,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-30 23:16:49,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:16:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-30 23:16:51,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402500171] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:16:51,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:16:51,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:16:51,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21528846] [2023-03-30 23:16:51,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:16:51,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:16:51,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:51,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:16:51,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:16:51,283 INFO L87 Difference]: Start difference. First operand 13390 states and 17293 transitions. Second operand has 12 states, 12 states have (on average 33.5) internal successors, (402), 10 states have internal predecessors, (402), 5 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:16:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:55,376 INFO L93 Difference]: Finished difference Result 33688 states and 45000 transitions. [2023-03-30 23:16:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-03-30 23:16:55,377 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 33.5) internal successors, (402), 10 states have internal predecessors, (402), 5 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 332 [2023-03-30 23:16:55,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:55,448 INFO L225 Difference]: With dead ends: 33688 [2023-03-30 23:16:55,448 INFO L226 Difference]: Without dead ends: 20682 [2023-03-30 23:16:55,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 691 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=318, Invalid=1404, Unknown=0, NotChecked=0, Total=1722 [2023-03-30 23:16:55,485 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2572 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 4007 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 4657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 4007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:55,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2572 Valid, 411 Invalid, 4657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 4007 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-03-30 23:16:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20682 states. [2023-03-30 23:16:55,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20682 to 16881. [2023-03-30 23:16:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16881 states, 16488 states have (on average 1.1672731683648714) internal successors, (19246), 16703 states have internal predecessors, (19246), 89 states have call successors, (89), 89 states have call predecessors, (89), 303 states have return successors, (2520), 88 states have call predecessors, (2520), 88 states have call successors, (2520) [2023-03-30 23:16:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16881 states to 16881 states and 21855 transitions. [2023-03-30 23:16:55,972 INFO L78 Accepts]: Start accepts. Automaton has 16881 states and 21855 transitions. Word has length 332 [2023-03-30 23:16:55,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:55,973 INFO L495 AbstractCegarLoop]: Abstraction has 16881 states and 21855 transitions. [2023-03-30 23:16:55,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.5) internal successors, (402), 10 states have internal predecessors, (402), 5 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-03-30 23:16:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 16881 states and 21855 transitions. [2023-03-30 23:16:55,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-03-30 23:16:55,985 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:55,986 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:16:55,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:16:56,192 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 [2023-03-30 23:16:56,193 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:56,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1404191725, now seen corresponding path program 1 times [2023-03-30 23:16:56,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:56,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141523419] [2023-03-30 23:16:56,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:56,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:56,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:56,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-03-30 23:16:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-03-30 23:16:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:56,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141523419] [2023-03-30 23:16:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141523419] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:16:56,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:16:56,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-30 23:16:56,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097965166] [2023-03-30 23:16:56,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:16:56,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:16:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:16:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:16:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:16:56,516 INFO L87 Difference]: Start difference. First operand 16881 states and 21855 transitions. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 3 states have internal predecessors, (215), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 23:16:57,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:16:57,477 INFO L93 Difference]: Finished difference Result 32215 states and 41409 transitions. [2023-03-30 23:16:57,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:16:57,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 3 states have internal predecessors, (215), 3 states have call successors, (4), 4 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 347 [2023-03-30 23:16:57,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:16:57,534 INFO L225 Difference]: With dead ends: 32215 [2023-03-30 23:16:57,534 INFO L226 Difference]: Without dead ends: 15718 [2023-03-30 23:16:57,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:16:57,568 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 534 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:16:57,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 43 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-30 23:16:57,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15718 states. [2023-03-30 23:16:57,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15718 to 15709. [2023-03-30 23:16:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15709 states, 15342 states have (on average 1.154412723243384) internal successors, (17711), 15543 states have internal predecessors, (17711), 83 states have call successors, (83), 83 states have call predecessors, (83), 283 states have return successors, (2116), 82 states have call predecessors, (2116), 82 states have call successors, (2116) [2023-03-30 23:16:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15709 states to 15709 states and 19910 transitions. [2023-03-30 23:16:57,951 INFO L78 Accepts]: Start accepts. Automaton has 15709 states and 19910 transitions. Word has length 347 [2023-03-30 23:16:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:16:57,952 INFO L495 AbstractCegarLoop]: Abstraction has 15709 states and 19910 transitions. [2023-03-30 23:16:57,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 3 states have internal predecessors, (215), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-30 23:16:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 15709 states and 19910 transitions. [2023-03-30 23:16:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-03-30 23:16:57,972 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:16:57,973 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:16:57,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-30 23:16:57,973 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:16:57,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:16:57,974 INFO L85 PathProgramCache]: Analyzing trace with hash 505303867, now seen corresponding path program 1 times [2023-03-30 23:16:57,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:16:57,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043913411] [2023-03-30 23:16:57,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:57,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:16:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:58,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:16:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:16:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:58,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-03-30 23:16:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-03-30 23:16:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 159 proven. 6 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-03-30 23:16:59,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:16:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043913411] [2023-03-30 23:16:59,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043913411] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:16:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366011666] [2023-03-30 23:16:59,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:16:59,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:16:59,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:16:59,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:16:59,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:16:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:16:59,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 11 conjunts are in the unsatisfiable core [2023-03-30 23:16:59,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:16:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-03-30 23:16:59,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:17:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 161 proven. 199 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-03-30 23:17:02,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366011666] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:17:02,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:17:02,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2023-03-30 23:17:02,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805768378] [2023-03-30 23:17:02,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:17:02,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-03-30 23:17:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:17:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-03-30 23:17:02,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-03-30 23:17:02,244 INFO L87 Difference]: Start difference. First operand 15709 states and 19910 transitions. Second operand has 17 states, 17 states have (on average 32.8235294117647) internal successors, (558), 14 states have internal predecessors, (558), 6 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-03-30 23:17:06,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:17:06,297 INFO L93 Difference]: Finished difference Result 51046 states and 64918 transitions. [2023-03-30 23:17:06,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-03-30 23:17:06,298 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 32.8235294117647) internal successors, (558), 14 states have internal predecessors, (558), 6 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 390 [2023-03-30 23:17:06,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:17:06,401 INFO L225 Difference]: With dead ends: 51046 [2023-03-30 23:17:06,401 INFO L226 Difference]: Without dead ends: 33213 [2023-03-30 23:17:06,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 777 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=375, Invalid=1185, Unknown=0, NotChecked=0, Total=1560 [2023-03-30 23:17:06,425 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2392 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 4253 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 4983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 4253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:17:06,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2396 Valid, 196 Invalid, 4983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 4253 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-03-30 23:17:06,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33213 states.