/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_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:49:12,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:49:12,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:49:12,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:49:12,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 23:49:12,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 23:49:12,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 23:49:12,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 23:49:12,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 23:49:12,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 23:49:12,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 23:49:12,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 23:49:12,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 23:49:12,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 23:49:12,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 23:49:12,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 23:49:12,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 23:49:12,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 23:49:12,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 23:49:12,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 23:49:12,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 23:49:12,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 23:49:12,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 23:49:12,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 23:49:12,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 23:49:12,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 23:49:12,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 23:49:12,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 23:49:12,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:49:12,650 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:49:12,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:49:12,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:49:12,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:49:12,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:49:12,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:49:12,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:49:12,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:49:12,653 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:49:12,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:49:12,654 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:49:12,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:49:12,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:49:12,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:49:12,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:49:12,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:49:12,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:49:12,655 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:49:12,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:49:12,655 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:49:12,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:49:12,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:49:12,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:49:12,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:49:12,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:49:12,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:49:12,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:49:12,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:49:12,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:49:12,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:49:12,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:49:12,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:49:12,658 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:49:12,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:49:12,658 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:49:12,658 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:49:12,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:49:12,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:49:12,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:49:12,925 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:49:12,925 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:49:12,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label01.c [2023-04-01 23:49:14,175 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:49:14,733 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:49:14,734 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label01.c [2023-04-01 23:49:14,784 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3086dd1/7354506a26824166a42451ecb4c533a0/FLAGa281565a6 [2023-04-01 23:49:14,798 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3086dd1/7354506a26824166a42451ecb4c533a0 [2023-04-01 23:49:14,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:49:14,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:49:14,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:49:14,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:49:14,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:49:14,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:49:14" (1/1) ... [2023-04-01 23:49:14,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd629f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:14, skipping insertion in model container [2023-04-01 23:49:14,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:49:14" (1/1) ... [2023-04-01 23:49:14,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:49:14,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:49:15,326 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_label01.c[8162,8175] [2023-04-01 23:49:16,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:49:16,391 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:49:16,469 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_label01.c[8162,8175] [2023-04-01 23:49:17,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:49:17,141 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:49:17,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:17 WrapperNode [2023-04-01 23:49:17,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:49:17,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:49:17,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:49:17,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:49:17,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:17" (1/1) ... [2023-04-01 23:49:17,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:17" (1/1) ... [2023-04-01 23:49:17,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:17" (1/1) ... [2023-04-01 23:49:17,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:17" (1/1) ... [2023-04-01 23:49:17,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:17" (1/1) ... [2023-04-01 23:49:17,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:17" (1/1) ... [2023-04-01 23:49:17,462 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:17" (1/1) ... [2023-04-01 23:49:17,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:17" (1/1) ... [2023-04-01 23:49:17,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:49:17,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:49:17,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:49:17,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:49:17,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:17" (1/1) ... [2023-04-01 23:49:17,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:49:17,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:49:17,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:49:17,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:49:17,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:49:17,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:49:17,611 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:49:17,611 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:49:17,611 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:49:17,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:49:17,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 23:49:17,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 23:49:17,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 23:49:17,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:49:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:49:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:49:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:49:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 23:49:17,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 23:49:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 23:49:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:49:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:49:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:49:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:49:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:49:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:49:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:49:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:49:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:49:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:49:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:49:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:49:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:49:17,714 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:49:17,716 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:49:24,604 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:49:24,620 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:49:24,620 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:49:24,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:49:24 BoogieIcfgContainer [2023-04-01 23:49:24,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:49:24,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:49:24,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:49:24,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:49:24,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:49:14" (1/3) ... [2023-04-01 23:49:24,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d9e867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:49:24, skipping insertion in model container [2023-04-01 23:49:24,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:49:17" (2/3) ... [2023-04-01 23:49:24,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d9e867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:49:24, skipping insertion in model container [2023-04-01 23:49:24,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:49:24" (3/3) ... [2023-04-01 23:49:24,631 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label01.c [2023-04-01 23:49:24,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:49:24,646 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:49:24,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:49:24,740 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;@169a1679, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:49:24,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:49:24,752 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) [2023-04-01 23:49:24,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 23:49:24,764 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:49:24,765 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] [2023-04-01 23:49:24,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:49:24,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:49:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash 537360968, now seen corresponding path program 1 times [2023-04-01 23:49:24,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:49:24,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215937403] [2023-04-01 23:49:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:49:24,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:49:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:49:25,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:49:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:49:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:49:25,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:49:25,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215937403] [2023-04-01 23:49:25,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215937403] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:49:25,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:49:25,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 23:49:25,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197885587] [2023-04-01 23:49:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:49:25,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:49:25,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:49:25,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:49:25,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:49:25,398 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 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:49:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:49:38,294 INFO L93 Difference]: Finished difference Result 6480 states and 12299 transitions. [2023-04-01 23:49:38,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:49:38,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 69 [2023-04-01 23:49:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:49:38,327 INFO L225 Difference]: With dead ends: 6480 [2023-04-01 23:49:38,328 INFO L226 Difference]: Without dead ends: 4635 [2023-04-01 23:49:38,338 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 [2023-04-01 23:49:38,340 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 7752 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 9808 mSolverCounterSat, 2328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7752 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 12136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2328 IncrementalHoareTripleChecker+Valid, 9808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:49:38,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7752 Valid, 493 Invalid, 12136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2328 Valid, 9808 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2023-04-01 23:49:38,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2023-04-01 23:49:38,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4629. [2023-04-01 23:49:38,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4571 states have (on average 1.6740319404944213) internal successors, (7652), 4574 states have internal predecessors, (7652), 20 states have call successors, (20), 20 states have call predecessors, (20), 37 states have return successors, (77), 34 states have call predecessors, (77), 19 states have call successors, (77) [2023-04-01 23:49:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7749 transitions. [2023-04-01 23:49:38,533 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 7749 transitions. Word has length 69 [2023-04-01 23:49:38,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:49:38,535 INFO L495 AbstractCegarLoop]: Abstraction has 4629 states and 7749 transitions. [2023-04-01 23:49:38,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:49:38,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 7749 transitions. [2023-04-01 23:49:38,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-01 23:49:38,546 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:49:38,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:49:38,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:49:38,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:49:38,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:49:38,548 INFO L85 PathProgramCache]: Analyzing trace with hash -996189458, now seen corresponding path program 1 times [2023-04-01 23:49:38,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:49:38,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042470094] [2023-04-01 23:49:38,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:49:38,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:49:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:49:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:49:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:49:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:49:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:49:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:49:39,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:49:39,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042470094] [2023-04-01 23:49:39,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042470094] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:49:39,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:49:39,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:49:39,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227061876] [2023-04-01 23:49:39,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:49:39,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:49:39,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:49:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:49:39,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:49:39,034 INFO L87 Difference]: Start difference. First operand 4629 states and 7749 transitions. Second operand has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:49:49,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:49:49,959 INFO L93 Difference]: Finished difference Result 10809 states and 17786 transitions. [2023-04-01 23:49:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 23:49:49,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 147 [2023-04-01 23:49:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:49:49,987 INFO L225 Difference]: With dead ends: 10809 [2023-04-01 23:49:49,987 INFO L226 Difference]: Without dead ends: 6186 [2023-04-01 23:49:49,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:49:49,999 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 5313 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 11948 mSolverCounterSat, 1993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5313 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 13941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1993 IncrementalHoareTripleChecker+Valid, 11948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:49:49,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5313 Valid, 818 Invalid, 13941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1993 Valid, 11948 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-04-01 23:49:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2023-04-01 23:49:50,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 6137. [2023-04-01 23:49:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6137 states, 6029 states have (on average 1.4795156742411677) internal successors, (8920), 6039 states have internal predecessors, (8920), 26 states have call successors, (26), 26 states have call predecessors, (26), 81 states have return successors, (175), 71 states have call predecessors, (175), 25 states have call successors, (175) [2023-04-01 23:49:50,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6137 states to 6137 states and 9121 transitions. [2023-04-01 23:49:50,165 INFO L78 Accepts]: Start accepts. Automaton has 6137 states and 9121 transitions. Word has length 147 [2023-04-01 23:49:50,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:49:50,167 INFO L495 AbstractCegarLoop]: Abstraction has 6137 states and 9121 transitions. [2023-04-01 23:49:50,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:49:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 6137 states and 9121 transitions. [2023-04-01 23:49:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-01 23:49:50,174 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:49:50,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:49:50,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:49:50,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:49:50,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:49:50,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1626923714, now seen corresponding path program 1 times [2023-04-01 23:49:50,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:49:50,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244586112] [2023-04-01 23:49:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:49:50,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:49:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:49:50,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:49:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:49:50,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:49:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:49:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:49:50,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:49:50,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244586112] [2023-04-01 23:49:50,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244586112] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:49:50,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:49:50,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:49:50,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51013825] [2023-04-01 23:49:50,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:49:50,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:49:50,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:49:50,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:49:50,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:49:50,653 INFO L87 Difference]: Start difference. First operand 6137 states and 9121 transitions. Second operand has 7 states, 6 states have (on average 24.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:50:01,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:50:01,491 INFO L93 Difference]: Finished difference Result 18713 states and 28143 transitions. [2023-04-01 23:50:01,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:50:01,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 24.0) internal successors, (144), 4 states have internal predecessors, (144), 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 150 [2023-04-01 23:50:01,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:50:01,554 INFO L225 Difference]: With dead ends: 18713 [2023-04-01 23:50:01,554 INFO L226 Difference]: Without dead ends: 12582 [2023-04-01 23:50:01,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:50:01,574 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 14123 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 9844 mSolverCounterSat, 829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14123 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 10673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 9844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:50:01,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14123 Valid, 783 Invalid, 10673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 9844 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-04-01 23:50:01,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12582 states. [2023-04-01 23:50:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12582 to 12184. [2023-04-01 23:50:01,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12184 states, 11913 states have (on average 1.428859229413246) internal successors, (17022), 11946 states have internal predecessors, (17022), 50 states have call successors, (50), 50 states have call predecessors, (50), 220 states have return successors, (561), 187 states have call predecessors, (561), 49 states have call successors, (561) [2023-04-01 23:50:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12184 states to 12184 states and 17633 transitions. [2023-04-01 23:50:01,866 INFO L78 Accepts]: Start accepts. Automaton has 12184 states and 17633 transitions. Word has length 150 [2023-04-01 23:50:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:50:01,868 INFO L495 AbstractCegarLoop]: Abstraction has 12184 states and 17633 transitions. [2023-04-01 23:50:01,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 24.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:50:01,869 INFO L276 IsEmpty]: Start isEmpty. Operand 12184 states and 17633 transitions. [2023-04-01 23:50:01,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-01 23:50:01,871 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:50:01,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:50:01,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 23:50:01,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:50:01,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:50:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2100890008, now seen corresponding path program 1 times [2023-04-01 23:50:01,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:50:01,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847492526] [2023-04-01 23:50:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:01,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:50:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:50:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:50:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:50:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847492526] [2023-04-01 23:50:02,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847492526] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:50:02,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:50:02,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:50:02,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462594187] [2023-04-01 23:50:02,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:50:02,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:50:02,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:50:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:50:02,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:50:02,288 INFO L87 Difference]: Start difference. First operand 12184 states and 17633 transitions. Second operand has 7 states, 6 states have (on average 27.333333333333332) internal successors, (164), 4 states have internal predecessors, (164), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:50:14,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:50:14,234 INFO L93 Difference]: Finished difference Result 37596 states and 55301 transitions. [2023-04-01 23:50:14,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:50:14,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 27.333333333333332) internal successors, (164), 4 states have internal predecessors, (164), 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 170 [2023-04-01 23:50:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:50:14,329 INFO L225 Difference]: With dead ends: 37596 [2023-04-01 23:50:14,330 INFO L226 Difference]: Without dead ends: 25418 [2023-04-01 23:50:14,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:50:14,358 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 5859 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 11344 mSolverCounterSat, 2113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5859 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 13457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2113 IncrementalHoareTripleChecker+Valid, 11344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:50:14,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5859 Valid, 956 Invalid, 13457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2113 Valid, 11344 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-04-01 23:50:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25418 states. [2023-04-01 23:50:14,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25418 to 23097. [2023-04-01 23:50:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23097 states, 22383 states have (on average 1.280302014922039) internal successors, (28657), 22485 states have internal predecessors, (28657), 92 states have call successors, (92), 92 states have call predecessors, (92), 621 states have return successors, (1845), 519 states have call predecessors, (1845), 91 states have call successors, (1845) [2023-04-01 23:50:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23097 states to 23097 states and 30594 transitions. [2023-04-01 23:50:14,967 INFO L78 Accepts]: Start accepts. Automaton has 23097 states and 30594 transitions. Word has length 170 [2023-04-01 23:50:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:50:14,968 INFO L495 AbstractCegarLoop]: Abstraction has 23097 states and 30594 transitions. [2023-04-01 23:50:14,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 27.333333333333332) internal successors, (164), 4 states have internal predecessors, (164), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:50:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 23097 states and 30594 transitions. [2023-04-01 23:50:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-04-01 23:50:14,970 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:50:14,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:50:14,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 23:50:14,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:50:14,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:50:14,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2033455448, now seen corresponding path program 1 times [2023-04-01 23:50:14,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:50:14,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130500125] [2023-04-01 23:50:14,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:14,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:50:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:50:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:50:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:15,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:50:15,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130500125] [2023-04-01 23:50:15,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130500125] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:50:15,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:50:15,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:50:15,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648240367] [2023-04-01 23:50:15,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:50:15,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:50:15,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:50:15,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:50:15,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:50:15,363 INFO L87 Difference]: Start difference. First operand 23097 states and 30594 transitions. Second operand has 7 states, 6 states have (on average 28.5) internal successors, (171), 4 states have internal predecessors, (171), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:50:28,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:50:28,015 INFO L93 Difference]: Finished difference Result 71611 states and 98294 transitions. [2023-04-01 23:50:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:50:28,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 28.5) internal successors, (171), 4 states have internal predecessors, (171), 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 177 [2023-04-01 23:50:28,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:50:28,172 INFO L225 Difference]: With dead ends: 71611 [2023-04-01 23:50:28,173 INFO L226 Difference]: Without dead ends: 48520 [2023-04-01 23:50:28,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:50:28,221 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 8125 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 11713 mSolverCounterSat, 2088 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8125 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 13801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2088 IncrementalHoareTripleChecker+Valid, 11713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:50:28,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8125 Valid, 1047 Invalid, 13801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2088 Valid, 11713 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-04-01 23:50:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48520 states. [2023-04-01 23:50:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48520 to 46827. [2023-04-01 23:50:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46827 states, 44920 states have (on average 1.184060552092609) internal successors, (53188), 45252 states have internal predecessors, (53188), 182 states have call successors, (182), 182 states have call predecessors, (182), 1724 states have return successors, (6173), 1392 states have call predecessors, (6173), 181 states have call successors, (6173) [2023-04-01 23:50:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46827 states to 46827 states and 59543 transitions. [2023-04-01 23:50:29,353 INFO L78 Accepts]: Start accepts. Automaton has 46827 states and 59543 transitions. Word has length 177 [2023-04-01 23:50:29,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:50:29,353 INFO L495 AbstractCegarLoop]: Abstraction has 46827 states and 59543 transitions. [2023-04-01 23:50:29,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 28.5) internal successors, (171), 4 states have internal predecessors, (171), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:50:29,354 INFO L276 IsEmpty]: Start isEmpty. Operand 46827 states and 59543 transitions. [2023-04-01 23:50:29,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-04-01 23:50:29,356 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:50:29,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:50:29,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 23:50:29,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:50:29,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:50:29,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1358808578, now seen corresponding path program 1 times [2023-04-01 23:50:29,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:50:29,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106006296] [2023-04-01 23:50:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:29,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:50:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:29,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:50:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:50:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:29,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:50:29,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106006296] [2023-04-01 23:50:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106006296] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:50:29,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950136471] [2023-04-01 23:50:29,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:29,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:50:29,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:50:29,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:50:29,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:50:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:29,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:50:29,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:50:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:30,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:50:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950136471] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:50:30,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:50:30,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:50:30,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087560804] [2023-04-01 23:50:30,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:50:30,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:50:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:50:30,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:50:30,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:50:30,078 INFO L87 Difference]: Start difference. First operand 46827 states and 59543 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:50:37,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:50:37,107 INFO L93 Difference]: Finished difference Result 132763 states and 176232 transitions. [2023-04-01 23:50:37,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:50:37,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 280 [2023-04-01 23:50:37,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:50:37,431 INFO L225 Difference]: With dead ends: 132763 [2023-04-01 23:50:37,431 INFO L226 Difference]: Without dead ends: 85942 [2023-04-01 23:50:37,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:50:37,513 INFO L413 NwaCegarLoop]: 2987 mSDtfsCounter, 1453 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 4153 mSolverCounterSat, 1741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 5894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1741 IncrementalHoareTripleChecker+Valid, 4153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:50:37,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 3189 Invalid, 5894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1741 Valid, 4153 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 23:50:37,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85942 states. [2023-04-01 23:50:39,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85942 to 81523. [2023-04-01 23:50:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81523 states, 78847 states have (on average 1.1464735500399508) internal successors, (90396), 79296 states have internal predecessors, (90396), 326 states have call successors, (326), 326 states have call predecessors, (326), 2349 states have return successors, (12354), 1900 states have call predecessors, (12354), 325 states have call successors, (12354) [2023-04-01 23:50:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81523 states to 81523 states and 103076 transitions. [2023-04-01 23:50:39,746 INFO L78 Accepts]: Start accepts. Automaton has 81523 states and 103076 transitions. Word has length 280 [2023-04-01 23:50:39,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:50:39,747 INFO L495 AbstractCegarLoop]: Abstraction has 81523 states and 103076 transitions. [2023-04-01 23:50:39,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:50:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 81523 states and 103076 transitions. [2023-04-01 23:50:39,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-04-01 23:50:39,759 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:50:39,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:50:39,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 23:50:39,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 23:50:39,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:50:39,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:50:39,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1160415739, now seen corresponding path program 1 times [2023-04-01 23:50:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:50:39,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630344300] [2023-04-01 23:50:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:40,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:50:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:40,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:50:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:50:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:41,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:50:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:50:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:41,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:50:41,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630344300] [2023-04-01 23:50:41,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630344300] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:50:41,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394789296] [2023-04-01 23:50:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:41,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:50:41,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:50:41,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:50:41,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:50:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:41,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:50:41,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:50:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:41,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:50:41,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394789296] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:50:41,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:50:41,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:50:41,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767674283] [2023-04-01 23:50:41,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:50:41,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:50:41,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:50:41,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:50:41,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:50:41,843 INFO L87 Difference]: Start difference. First operand 81523 states and 103076 transitions. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:50:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:50:49,315 INFO L93 Difference]: Finished difference Result 204724 states and 268469 transitions. [2023-04-01 23:50:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:50:49,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 695 [2023-04-01 23:50:49,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:50:49,862 INFO L225 Difference]: With dead ends: 204724 [2023-04-01 23:50:49,862 INFO L226 Difference]: Without dead ends: 123207 [2023-04-01 23:50:49,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:50:49,956 INFO L413 NwaCegarLoop]: 3204 mSDtfsCounter, 1432 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 5054 mSolverCounterSat, 993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 3408 SdHoareTripleChecker+Invalid, 6047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 993 IncrementalHoareTripleChecker+Valid, 5054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:50:49,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 3408 Invalid, 6047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [993 Valid, 5054 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 23:50:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123207 states. [2023-04-01 23:50:52,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123207 to 121663. [2023-04-01 23:50:52,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121663 states, 118194 states have (on average 1.1259031761341523) internal successors, (133075), 118781 states have internal predecessors, (133075), 494 states have call successors, (494), 494 states have call predecessors, (494), 2974 states have return successors, (20170), 2387 states have call predecessors, (20170), 493 states have call successors, (20170) [2023-04-01 23:50:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121663 states to 121663 states and 153739 transitions. [2023-04-01 23:50:52,910 INFO L78 Accepts]: Start accepts. Automaton has 121663 states and 153739 transitions. Word has length 695 [2023-04-01 23:50:52,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:50:52,912 INFO L495 AbstractCegarLoop]: Abstraction has 121663 states and 153739 transitions. [2023-04-01 23:50:52,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:50:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 121663 states and 153739 transitions. [2023-04-01 23:50:52,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-04-01 23:50:52,932 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:50:52,933 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:50:52,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:50:53,139 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,SelfDestructingSolverStorable6 [2023-04-01 23:50:53,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:50:53,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:50:53,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1049870650, now seen corresponding path program 1 times [2023-04-01 23:50:53,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:50:53,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522947801] [2023-04-01 23:50:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:53,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:50:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:50:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:50:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:50:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:50:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:54,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2023-04-01 23:50:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:50:54,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:50:54,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522947801] [2023-04-01 23:50:54,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522947801] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:50:54,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789216590] [2023-04-01 23:50:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:50:54,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:50:54,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:50:54,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:50:54,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:50:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:50:54,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:50:54,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:50:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 220 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:54,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:50:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 220 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:50:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789216590] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:50:55,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:50:55,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:50:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783383701] [2023-04-01 23:50:55,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:50:55,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:50:55,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:50:55,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:50:55,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:50:55,250 INFO L87 Difference]: Start difference. First operand 121663 states and 153739 transitions. Second operand has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 9 states have internal predecessors, (947), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 23:51:11,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:51:11,560 INFO L93 Difference]: Finished difference Result 286740 states and 378004 transitions. [2023-04-01 23:51:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 23:51:11,561 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 9 states have internal predecessors, (947), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 760 [2023-04-01 23:51:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:51:12,247 INFO L225 Difference]: With dead ends: 286740 [2023-04-01 23:51:12,247 INFO L226 Difference]: Without dead ends: 165083 [2023-04-01 23:51:12,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1555 GetRequests, 1529 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:51:12,455 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 17730 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 14354 mSolverCounterSat, 4469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17730 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 18823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4469 IncrementalHoareTripleChecker+Valid, 14354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:51:12,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17730 Valid, 1439 Invalid, 18823 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4469 Valid, 14354 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-04-01 23:51:12,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165083 states. [2023-04-01 23:51:14,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165083 to 162754. [2023-04-01 23:51:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162754 states, 156691 states have (on average 1.113809982704814) internal successors, (174524), 157888 states have internal predecessors, (174524), 644 states have call successors, (644), 644 states have call predecessors, (644), 5418 states have return successors, (31196), 4221 states have call predecessors, (31196), 643 states have call successors, (31196) [2023-04-01 23:51:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162754 states to 162754 states and 206364 transitions. [2023-04-01 23:51:15,924 INFO L78 Accepts]: Start accepts. Automaton has 162754 states and 206364 transitions. Word has length 760 [2023-04-01 23:51:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:51:15,930 INFO L495 AbstractCegarLoop]: Abstraction has 162754 states and 206364 transitions. [2023-04-01 23:51:15,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 9 states have internal predecessors, (947), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 23:51:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 162754 states and 206364 transitions. [2023-04-01 23:51:15,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2023-04-01 23:51:15,985 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:51:15,986 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:51:15,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:51:16,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:51:16,193 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:51:16,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:51:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1711273562, now seen corresponding path program 1 times [2023-04-01 23:51:16,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:51:16,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59452322] [2023-04-01 23:51:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:51:16,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:51:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:17,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:51:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:51:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:51:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:17,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 23:51:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-01 23:51:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 513 proven. 2 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-04-01 23:51:18,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:51:18,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59452322] [2023-04-01 23:51:18,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59452322] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:51:18,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712979037] [2023-04-01 23:51:18,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:51:18,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:51:18,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:51:18,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:51:18,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:51:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:18,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:51:18,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:51:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 515 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-04-01 23:51:19,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:51:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 515 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-04-01 23:51:19,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712979037] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:51:19,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:51:19,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:51:19,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498757991] [2023-04-01 23:51:19,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:51:19,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:51:19,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:51:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:51:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:51:19,618 INFO L87 Difference]: Start difference. First operand 162754 states and 206364 transitions. Second operand has 12 states, 12 states have (on average 87.91666666666667) internal successors, (1055), 10 states have internal predecessors, (1055), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 23:51:40,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:51:40,427 INFO L93 Difference]: Finished difference Result 367827 states and 482185 transitions. [2023-04-01 23:51:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:51:40,428 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 87.91666666666667) internal successors, (1055), 10 states have internal predecessors, (1055), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 944 [2023-04-01 23:51:40,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:51:41,158 INFO L225 Difference]: With dead ends: 367827 [2023-04-01 23:51:41,158 INFO L226 Difference]: Without dead ends: 205079 [2023-04-01 23:51:41,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1930 GetRequests, 1905 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:51:41,303 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 12535 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 19720 mSolverCounterSat, 6369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12535 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 26089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6369 IncrementalHoareTripleChecker+Valid, 19720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:51:41,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12535 Valid, 1519 Invalid, 26089 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6369 Valid, 19720 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2023-04-01 23:51:41,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205079 states. [2023-04-01 23:51:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205079 to 204432. [2023-04-01 23:51:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204432 states, 197054 states have (on average 1.103316857308149) internal successors, (217413), 198540 states have internal predecessors, (217413), 812 states have call successors, (812), 812 states have call predecessors, (812), 6565 states have return successors, (38486), 5079 states have call predecessors, (38486), 811 states have call successors, (38486) [2023-04-01 23:51:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204432 states to 204432 states and 256711 transitions. [2023-04-01 23:51:45,228 INFO L78 Accepts]: Start accepts. Automaton has 204432 states and 256711 transitions. Word has length 944 [2023-04-01 23:51:45,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:51:45,230 INFO L495 AbstractCegarLoop]: Abstraction has 204432 states and 256711 transitions. [2023-04-01 23:51:45,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.91666666666667) internal successors, (1055), 10 states have internal predecessors, (1055), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 23:51:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 204432 states and 256711 transitions. [2023-04-01 23:51:45,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2023-04-01 23:51:45,248 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:51:45,248 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:51:45,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:51:45,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:51:45,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:51:45,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:51:45,456 INFO L85 PathProgramCache]: Analyzing trace with hash 524401651, now seen corresponding path program 1 times [2023-04-01 23:51:45,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:51:45,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436793318] [2023-04-01 23:51:45,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:51:45,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:51:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:46,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:51:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:51:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:47,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:51:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 23:51:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:47,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-01 23:51:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:47,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-04-01 23:51:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 546 proven. 11 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2023-04-01 23:51:47,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:51:47,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436793318] [2023-04-01 23:51:47,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436793318] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:51:47,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312334492] [2023-04-01 23:51:47,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:51:47,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:51:47,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:51:47,438 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:51:47,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:51:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:51:47,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:51:47,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:51:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 552 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-04-01 23:51:47,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:51:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 552 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-04-01 23:51:48,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312334492] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:51:48,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:51:48,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-04-01 23:51:48,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293797823] [2023-04-01 23:51:48,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:51:48,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:51:48,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:51:48,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:51:48,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:51:48,301 INFO L87 Difference]: Start difference. First operand 204432 states and 256711 transitions. Second operand has 14 states, 14 states have (on average 61.92857142857143) internal successors, (867), 12 states have internal predecessors, (867), 6 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 23:52:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:52:15,131 INFO L93 Difference]: Finished difference Result 473563 states and 600986 transitions. [2023-04-01 23:52:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-01 23:52:15,132 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 61.92857142857143) internal successors, (867), 12 states have internal predecessors, (867), 6 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 979 [2023-04-01 23:52:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:52:16,008 INFO L225 Difference]: With dead ends: 473563 [2023-04-01 23:52:16,009 INFO L226 Difference]: Without dead ends: 252651 [2023-04-01 23:52:16,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2020 GetRequests, 1984 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=1049, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 23:52:16,290 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 27633 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 36783 mSolverCounterSat, 5994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27633 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 42777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5994 IncrementalHoareTripleChecker+Valid, 36783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:52:16,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27633 Valid, 1966 Invalid, 42777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5994 Valid, 36783 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2023-04-01 23:52:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252651 states. [2023-04-01 23:52:20,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252651 to 250477. [2023-04-01 23:52:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250477 states, 242193 states have (on average 1.0498899637892094) internal successors, (254276), 243779 states have internal predecessors, (254276), 1133 states have call successors, (1133), 1004 states have call predecessors, (1133), 7150 states have return successors, (29676), 5693 states have call predecessors, (29676), 1132 states have call successors, (29676) [2023-04-01 23:52:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250477 states to 250477 states and 285085 transitions. [2023-04-01 23:52:21,502 INFO L78 Accepts]: Start accepts. Automaton has 250477 states and 285085 transitions. Word has length 979 [2023-04-01 23:52:21,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:52:21,504 INFO L495 AbstractCegarLoop]: Abstraction has 250477 states and 285085 transitions. [2023-04-01 23:52:21,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 61.92857142857143) internal successors, (867), 12 states have internal predecessors, (867), 6 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 23:52:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 250477 states and 285085 transitions. [2023-04-01 23:52:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2023-04-01 23:52:21,525 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:52:21,526 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:52:21,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:52:21,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 23:52:21,733 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:52:21,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:52:21,734 INFO L85 PathProgramCache]: Analyzing trace with hash -135004954, now seen corresponding path program 1 times [2023-04-01 23:52:21,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:52:21,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482324412] [2023-04-01 23:52:21,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:52:21,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:52:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:23,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:52:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:23,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:52:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:23,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:52:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2023-04-01 23:52:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-01 23:52:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:23,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 808 [2023-04-01 23:52:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 934 [2023-04-01 23:52:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 317 proven. 5 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2023-04-01 23:52:23,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:52:23,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482324412] [2023-04-01 23:52:23,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482324412] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:52:23,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102306453] [2023-04-01 23:52:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:52:23,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:52:23,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:52:23,506 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:52:23,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:52:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:52:24,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:52:24,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:52:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 958 proven. 2 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2023-04-01 23:52:24,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:52:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 505 proven. 173 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2023-04-01 23:52:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102306453] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:52:24,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:52:24,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2023-04-01 23:52:24,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971666999] [2023-04-01 23:52:24,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:52:24,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:52:24,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:52:24,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:52:24,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:52:24,546 INFO L87 Difference]: Start difference. First operand 250477 states and 285085 transitions. Second operand has 12 states, 12 states have (on average 73.08333333333333) internal successors, (877), 10 states have internal predecessors, (877), 5 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10)