/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/Problem19_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:47:23,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:47:23,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:47:23,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-30 23:47:23,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 23:47:23,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 23:47:23,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 23:47:23,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 23:47:23,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 23:47:23,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 23:47:23,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 23:47:23,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 23:47:23,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 23:47:23,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 23:47:23,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 23:47:23,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 23:47:23,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-30 23:47:23,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:47:23,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:47:23,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:47:23,210 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 23:47:23,236 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:47:23,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:47:23,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:47:23,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:47:23,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:47:23,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:47:23,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:47:23,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:47:23,239 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:47:23,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:47:23,240 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:47:23,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:47:23,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:47:23,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:47:23,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:47:23,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:47:23,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:47:23,241 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:47:23,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:47:23,241 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:47:23,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:47:23,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:47:23,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:47:23,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:47:23,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:47:23,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:47:23,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:47:23,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:47:23,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:47:23,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:47:23,243 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:47:23,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:47:23,243 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:47:23,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:47:23,243 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:47:23,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:47:23,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:47:23,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:47:23,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:47:23,523 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:47:23,523 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:47:23,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label02.c [2023-03-30 23:47:24,611 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:47:25,238 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:47:25,239 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label02.c [2023-03-30 23:47:25,297 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff62099c/011a03341c9f42aa9b7eb821d0547f0e/FLAGd61fb7539 [2023-03-30 23:47:25,313 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff62099c/011a03341c9f42aa9b7eb821d0547f0e [2023-03-30 23:47:25,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:47:25,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:47:25,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:47:25,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:47:25,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:47:25,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:47:25" (1/1) ... [2023-03-30 23:47:25,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732a9d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:25, skipping insertion in model container [2023-03-30 23:47:25,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:47:25" (1/1) ... [2023-03-30 23:47:25,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:47:25,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:47:25,858 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/Problem19_label02.c[8512,8525] [2023-03-30 23:47:27,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:47:27,016 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:47:27,053 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/Problem19_label02.c[8512,8525] [2023-03-30 23:47:27,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:47:27,726 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:47:27,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:27 WrapperNode [2023-03-30 23:47:27,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:47:27,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:47:27,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:47:27,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:47:27,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:27" (1/1) ... [2023-03-30 23:47:27,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:27" (1/1) ... [2023-03-30 23:47:27,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:27" (1/1) ... [2023-03-30 23:47:27,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:27" (1/1) ... [2023-03-30 23:47:28,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:27" (1/1) ... [2023-03-30 23:47:28,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:27" (1/1) ... [2023-03-30 23:47:28,085 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:27" (1/1) ... [2023-03-30 23:47:28,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:27" (1/1) ... [2023-03-30 23:47:28,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:47:28,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:47:28,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:47:28,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:47:28,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:27" (1/1) ... [2023-03-30 23:47:28,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:47:28,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:47:28,234 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 23:47:28,241 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 23:47:28,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:47:28,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:47:28,270 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:47:28,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:47:28,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:47:28,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 23:47:28,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-03-30 23:47:28,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-03-30 23:47:28,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-03-30 23:47:28,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:47:28,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:47:28,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:47:28,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 23:47:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-03-30 23:47:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-03-30 23:47:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-03-30 23:47:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:47:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:47:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:47:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:47:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:47:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:47:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:47:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:47:28,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:47:28,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:47:28,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:47:28,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:47:28,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:47:28,393 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:47:28,395 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:47:35,361 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:47:35,378 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:47:35,378 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:47:35,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:47:35 BoogieIcfgContainer [2023-03-30 23:47:35,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:47:35,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:47:35,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:47:35,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:47:35,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:47:25" (1/3) ... [2023-03-30 23:47:35,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447bbf90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:47:35, skipping insertion in model container [2023-03-30 23:47:35,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:47:27" (2/3) ... [2023-03-30 23:47:35,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447bbf90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:47:35, skipping insertion in model container [2023-03-30 23:47:35,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:47:35" (3/3) ... [2023-03-30 23:47:35,390 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label02.c [2023-03-30 23:47:35,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:47:35,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:47:35,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:47:35,489 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;@348db412, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:47:35,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:47:35,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-30 23:47:35,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-03-30 23:47:35,513 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:47:35,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:47:35,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:47:35,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:47:35,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1187165524, now seen corresponding path program 1 times [2023-03-30 23:47:35,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:47:35,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953014990] [2023-03-30 23:47:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:47:35,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:47:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:47:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:47:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:47:36,202 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 23:47:36,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:47:36,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953014990] [2023-03-30 23:47:36,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953014990] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:47:36,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:47:36,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-30 23:47:36,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708269086] [2023-03-30 23:47:36,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:47:36,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:47:36,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:47:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:47:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:47:36,238 INFO L87 Difference]: Start difference. First operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 23:47:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:47:50,286 INFO L93 Difference]: Finished difference Result 6587 states and 12523 transitions. [2023-03-30 23:47:50,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-30 23:47:50,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 72 [2023-03-30 23:47:50,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:47:50,323 INFO L225 Difference]: With dead ends: 6587 [2023-03-30 23:47:50,323 INFO L226 Difference]: Without dead ends: 4742 [2023-03-30 23:47:50,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:47:50,336 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 6299 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 10950 mSolverCounterSat, 2799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6299 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 13749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2799 IncrementalHoareTripleChecker+Valid, 10950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:47:50,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6299 Valid, 464 Invalid, 13749 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2799 Valid, 10950 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2023-03-30 23:47:50,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2023-03-30 23:47:50,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 4621. [2023-03-30 23:47:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4621 states, 4566 states have (on average 1.7636881296539642) internal successors, (8053), 4569 states have internal predecessors, (8053), 20 states have call successors, (20), 20 states have call predecessors, (20), 34 states have return successors, (74), 31 states have call predecessors, (74), 19 states have call successors, (74) [2023-03-30 23:47:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4621 states to 4621 states and 8147 transitions. [2023-03-30 23:47:50,541 INFO L78 Accepts]: Start accepts. Automaton has 4621 states and 8147 transitions. Word has length 72 [2023-03-30 23:47:50,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:47:50,541 INFO L495 AbstractCegarLoop]: Abstraction has 4621 states and 8147 transitions. [2023-03-30 23:47:50,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 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 23:47:50,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4621 states and 8147 transitions. [2023-03-30 23:47:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-03-30 23:47:50,557 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:47:50,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:47:50,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:47:50,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:47:50,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:47:50,562 INFO L85 PathProgramCache]: Analyzing trace with hash -228447527, now seen corresponding path program 1 times [2023-03-30 23:47:50,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:47:50,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047580851] [2023-03-30 23:47:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:47:50,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:47:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:47:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:47:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:47:50,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:47:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:47:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:47:51,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:47:51,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047580851] [2023-03-30 23:47:51,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047580851] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:47:51,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:47:51,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:47:51,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907789989] [2023-03-30 23:47:51,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:47:51,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:47:51,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:47:51,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:47:51,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:47:51,193 INFO L87 Difference]: Start difference. First operand 4621 states and 8147 transitions. Second operand has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 5 states have internal predecessors, (138), 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 23:48:06,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:48:06,792 INFO L93 Difference]: Finished difference Result 18006 states and 32711 transitions. [2023-03-30 23:48:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-30 23:48:06,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 5 states have internal predecessors, (138), 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 144 [2023-03-30 23:48:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:48:06,867 INFO L225 Difference]: With dead ends: 18006 [2023-03-30 23:48:06,867 INFO L226 Difference]: Without dead ends: 13391 [2023-03-30 23:48:06,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-03-30 23:48:06,880 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 8088 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 17082 mSolverCounterSat, 2352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8088 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 19434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2352 IncrementalHoareTripleChecker+Valid, 17082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:48:06,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8088 Valid, 1224 Invalid, 19434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2352 Valid, 17082 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2023-03-30 23:48:06,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13391 states. [2023-03-30 23:48:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13391 to 13312. [2023-03-30 23:48:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13312 states, 13069 states have (on average 1.5861198255413573) internal successors, (20729), 13093 states have internal predecessors, (20729), 56 states have call successors, (56), 56 states have call predecessors, (56), 186 states have return successors, (834), 162 states have call predecessors, (834), 55 states have call successors, (834) [2023-03-30 23:48:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13312 states to 13312 states and 21619 transitions. [2023-03-30 23:48:07,227 INFO L78 Accepts]: Start accepts. Automaton has 13312 states and 21619 transitions. Word has length 144 [2023-03-30 23:48:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:48:07,229 INFO L495 AbstractCegarLoop]: Abstraction has 13312 states and 21619 transitions. [2023-03-30 23:48:07,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 5 states have internal predecessors, (138), 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 23:48:07,229 INFO L276 IsEmpty]: Start isEmpty. Operand 13312 states and 21619 transitions. [2023-03-30 23:48:07,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-03-30 23:48:07,238 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:48:07,239 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:48:07,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:48:07,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:48:07,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:48:07,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1505205731, now seen corresponding path program 1 times [2023-03-30 23:48:07,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:48:07,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587515913] [2023-03-30 23:48:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:48:07,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:48:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:48:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:48:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:07,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-03-30 23:48:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 130 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-30 23:48:07,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:48:07,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587515913] [2023-03-30 23:48:07,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587515913] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:48:07,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730788566] [2023-03-30 23:48:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:48:07,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:48:07,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:48:07,751 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 23:48:07,754 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 23:48:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:07,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 23:48:07,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:48:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-03-30 23:48:08,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:48:08,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730788566] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:48:08,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:48:08,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-03-30 23:48:08,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332819157] [2023-03-30 23:48:08,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:48:08,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:48:08,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:48:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:48:08,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:48:08,088 INFO L87 Difference]: Start difference. First operand 13312 states and 21619 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:48:16,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:48:16,853 INFO L93 Difference]: Finished difference Result 40524 states and 68097 transitions. [2023-03-30 23:48:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-30 23:48:16,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 239 [2023-03-30 23:48:16,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:48:16,953 INFO L225 Difference]: With dead ends: 40524 [2023-03-30 23:48:16,954 INFO L226 Difference]: Without dead ends: 27218 [2023-03-30 23:48:16,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:48:16,997 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 8221 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 8097 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8221 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 9105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 8097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:48:17,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8221 Valid, 946 Invalid, 9105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 8097 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-03-30 23:48:17,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27218 states. [2023-03-30 23:48:17,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27218 to 26848. [2023-03-30 23:48:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26848 states, 26185 states have (on average 1.5328241359556998) internal successors, (40137), 26278 states have internal predecessors, (40137), 110 states have call successors, (110), 110 states have call predecessors, (110), 552 states have return successors, (2968), 459 states have call predecessors, (2968), 109 states have call successors, (2968) [2023-03-30 23:48:17,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26848 states to 26848 states and 43215 transitions. [2023-03-30 23:48:17,679 INFO L78 Accepts]: Start accepts. Automaton has 26848 states and 43215 transitions. Word has length 239 [2023-03-30 23:48:17,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:48:17,681 INFO L495 AbstractCegarLoop]: Abstraction has 26848 states and 43215 transitions. [2023-03-30 23:48:17,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-30 23:48:17,682 INFO L276 IsEmpty]: Start isEmpty. Operand 26848 states and 43215 transitions. [2023-03-30 23:48:17,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-03-30 23:48:17,687 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:48:17,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 23:48:17,696 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 23:48:17,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:48:17,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:48:17,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:48:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1215446407, now seen corresponding path program 1 times [2023-03-30 23:48:17,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:48:17,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334964312] [2023-03-30 23:48:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:48:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:48:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:48:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:18,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:48:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:18,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-03-30 23:48:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-30 23:48:18,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:48:18,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334964312] [2023-03-30 23:48:18,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334964312] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:48:18,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983602604] [2023-03-30 23:48:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:48:18,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:48:18,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:48:18,556 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 23:48:18,559 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 23:48:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:18,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 23:48:18,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:48:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-03-30 23:48:18,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:48:18,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983602604] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:48:18,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:48:18,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-03-30 23:48:18,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147255180] [2023-03-30 23:48:18,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:48:18,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:48:18,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:48:18,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:48:18,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:48:18,865 INFO L87 Difference]: Start difference. First operand 26848 states and 43215 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 4 states have internal predecessors, (187), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)