/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/locks/test_locks_8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 21:07:23,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 21:07:23,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 21:07:23,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 21:07:23,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 21:07:23,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 21:07:23,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 21:07:23,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 21:07:23,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 21:07:23,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 21:07:23,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 21:07:23,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 21:07:23,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 21:07:23,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 21:07:23,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 21:07:23,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 21:07:23,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 21:07:23,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 21:07:23,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 21:07:23,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 21:07:23,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 21:07:23,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 21:07:23,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 21:07:23,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 21:07:23,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 21:07:23,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 21:07:23,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 21:07:23,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 21:07:23,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 21:07:23,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 21:07:23,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 21:07:23,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 21:07:23,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 21:07:23,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 21:07:23,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 21:07:23,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 21:07:23,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 21:07:23,184 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 21:07:23,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 21:07:23,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 21:07:23,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 21:07:23,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 21:07:23,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 21:07:23,185 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 21:07:23,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 21:07:23,185 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 21:07:23,186 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 21:07:23,186 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 21:07:23,186 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 21:07:23,186 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 21:07:23,186 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 21:07:23,187 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 21:07:23,187 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 21:07:23,187 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 21:07:23,187 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 21:07:23,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 21:07:23,187 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 21:07:23,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 21:07:23,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 21:07:23,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 21:07:23,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 21:07:23,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 21:07:23,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 21:07:23,188 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 21:07:23,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 21:07:23,188 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 21:07:23,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 21:07:23,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 21:07:23,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 21:07:23,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:07:23,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 21:07:23,189 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 21:07:23,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 21:07:23,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 21:07:23,190 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 21:07:23,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 21:07:23,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 21:07:23,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 21:07:23,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 21:07:23,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 21:07:23,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 21:07:23,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 21:07:23,406 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 21:07:23,407 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 21:07:23,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_8.c [2023-03-31 21:07:24,499 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 21:07:24,674 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 21:07:24,674 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_8.c [2023-03-31 21:07:24,678 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cf5a55c0/04eda91851cb48adab389c52f3d1beb9/FLAG2bbf59f78 [2023-03-31 21:07:25,108 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cf5a55c0/04eda91851cb48adab389c52f3d1beb9 [2023-03-31 21:07:25,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 21:07:25,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 21:07:25,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 21:07:25,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 21:07:25,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 21:07:25,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:07:25" (1/1) ... [2023-03-31 21:07:25,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260194e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25, skipping insertion in model container [2023-03-31 21:07:25,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:07:25" (1/1) ... [2023-03-31 21:07:25,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 21:07:25,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 21:07:25,278 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/locks/test_locks_8.c[3218,3231] [2023-03-31 21:07:25,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:07:25,291 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 21:07:25,320 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/locks/test_locks_8.c[3218,3231] [2023-03-31 21:07:25,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:07:25,333 INFO L208 MainTranslator]: Completed translation [2023-03-31 21:07:25,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25 WrapperNode [2023-03-31 21:07:25,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 21:07:25,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 21:07:25,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 21:07:25,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 21:07:25,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25" (1/1) ... [2023-03-31 21:07:25,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25" (1/1) ... [2023-03-31 21:07:25,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25" (1/1) ... [2023-03-31 21:07:25,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25" (1/1) ... [2023-03-31 21:07:25,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25" (1/1) ... [2023-03-31 21:07:25,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25" (1/1) ... [2023-03-31 21:07:25,376 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25" (1/1) ... [2023-03-31 21:07:25,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25" (1/1) ... [2023-03-31 21:07:25,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 21:07:25,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 21:07:25,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 21:07:25,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 21:07:25,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25" (1/1) ... [2023-03-31 21:07:25,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:07:25,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:07:25,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 21:07:25,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 21:07:25,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 21:07:25,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 21:07:25,439 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 21:07:25,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 21:07:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 21:07:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 21:07:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 21:07:25,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 21:07:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 21:07:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 21:07:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 21:07:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 21:07:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 21:07:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 21:07:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 21:07:25,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 21:07:25,508 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 21:07:25,510 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 21:07:25,713 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 21:07:25,784 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 21:07:25,784 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 21:07:25,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:07:25 BoogieIcfgContainer [2023-03-31 21:07:25,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 21:07:25,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 21:07:25,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 21:07:25,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 21:07:25,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 09:07:25" (1/3) ... [2023-03-31 21:07:25,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb45628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:07:25, skipping insertion in model container [2023-03-31 21:07:25,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:07:25" (2/3) ... [2023-03-31 21:07:25,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb45628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:07:25, skipping insertion in model container [2023-03-31 21:07:25,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:07:25" (3/3) ... [2023-03-31 21:07:25,791 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2023-03-31 21:07:25,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 21:07:25,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 21:07:25,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 21:07:25,839 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=FINITE_AUTOMATA, 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;@21b6a0a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 21:07:25,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 21:07:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 25 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 21:07:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 21:07:25,847 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:07:25,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:07:25,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:07:25,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:07:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1762234420, now seen corresponding path program 1 times [2023-03-31 21:07:25,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:07:25,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973217619] [2023-03-31 21:07:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:07:25,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:07:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:07:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:07:26,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:07:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973217619] [2023-03-31 21:07:26,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973217619] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:07:26,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:07:26,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 21:07:26,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228990211] [2023-03-31 21:07:26,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:07:26,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 21:07:26,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:07:26,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 21:07:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,120 INFO L87 Difference]: Start difference. First operand has 30 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 25 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:07:26,161 INFO L93 Difference]: Finished difference Result 58 states and 90 transitions. [2023-03-31 21:07:26,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 21:07:26,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-03-31 21:07:26,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:07:26,168 INFO L225 Difference]: With dead ends: 58 [2023-03-31 21:07:26,168 INFO L226 Difference]: Without dead ends: 43 [2023-03-31 21:07:26,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,172 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 34 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:07:26,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 116 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:07:26,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-03-31 21:07:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 25. [2023-03-31 21:07:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 39 transitions. [2023-03-31 21:07:26,194 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 39 transitions. Word has length 10 [2023-03-31 21:07:26,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:07:26,194 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 39 transitions. [2023-03-31 21:07:26,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,195 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 39 transitions. [2023-03-31 21:07:26,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 21:07:26,195 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:07:26,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:07:26,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 21:07:26,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:07:26,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:07:26,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1205093797, now seen corresponding path program 1 times [2023-03-31 21:07:26,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:07:26,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060911431] [2023-03-31 21:07:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:07:26,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:07:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:07:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:07:26,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:07:26,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060911431] [2023-03-31 21:07:26,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060911431] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:07:26,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:07:26,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 21:07:26,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550104817] [2023-03-31 21:07:26,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:07:26,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 21:07:26,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:07:26,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 21:07:26,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,269 INFO L87 Difference]: Start difference. First operand 25 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:07:26,290 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2023-03-31 21:07:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 21:07:26,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 21:07:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:07:26,292 INFO L225 Difference]: With dead ends: 43 [2023-03-31 21:07:26,292 INFO L226 Difference]: Without dead ends: 41 [2023-03-31 21:07:26,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,293 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 29 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:07:26,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 92 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:07:26,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-03-31 21:07:26,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 25. [2023-03-31 21:07:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 38 transitions. [2023-03-31 21:07:26,297 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 38 transitions. Word has length 11 [2023-03-31 21:07:26,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:07:26,297 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 38 transitions. [2023-03-31 21:07:26,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 38 transitions. [2023-03-31 21:07:26,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-03-31 21:07:26,298 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:07:26,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:07:26,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 21:07:26,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:07:26,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:07:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1297012329, now seen corresponding path program 1 times [2023-03-31 21:07:26,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:07:26,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143624772] [2023-03-31 21:07:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:07:26,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:07:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:07:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:07:26,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:07:26,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143624772] [2023-03-31 21:07:26,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143624772] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:07:26,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:07:26,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 21:07:26,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600135584] [2023-03-31 21:07:26,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:07:26,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 21:07:26,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:07:26,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 21:07:26,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,344 INFO L87 Difference]: Start difference. First operand 25 states and 38 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:07:26,358 INFO L93 Difference]: Finished difference Result 41 states and 62 transitions. [2023-03-31 21:07:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 21:07:26,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-03-31 21:07:26,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:07:26,360 INFO L225 Difference]: With dead ends: 41 [2023-03-31 21:07:26,360 INFO L226 Difference]: Without dead ends: 39 [2023-03-31 21:07:26,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,361 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:07:26,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 86 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:07:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-03-31 21:07:26,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 25. [2023-03-31 21:07:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 37 transitions. [2023-03-31 21:07:26,365 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 37 transitions. Word has length 12 [2023-03-31 21:07:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:07:26,365 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 37 transitions. [2023-03-31 21:07:26,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2023-03-31 21:07:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-03-31 21:07:26,366 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:07:26,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:07:26,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 21:07:26,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:07:26,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:07:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1552891248, now seen corresponding path program 1 times [2023-03-31 21:07:26,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:07:26,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386201992] [2023-03-31 21:07:26,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:07:26,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:07:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:07:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:07:26,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:07:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386201992] [2023-03-31 21:07:26,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386201992] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:07:26,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:07:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 21:07:26,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568495535] [2023-03-31 21:07:26,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:07:26,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 21:07:26,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:07:26,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 21:07:26,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,408 INFO L87 Difference]: Start difference. First operand 25 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:07:26,422 INFO L93 Difference]: Finished difference Result 39 states and 57 transitions. [2023-03-31 21:07:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 21:07:26,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-03-31 21:07:26,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:07:26,423 INFO L225 Difference]: With dead ends: 39 [2023-03-31 21:07:26,423 INFO L226 Difference]: Without dead ends: 37 [2023-03-31 21:07:26,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,424 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 25 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:07:26,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 80 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:07:26,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-03-31 21:07:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2023-03-31 21:07:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2023-03-31 21:07:26,428 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 36 transitions. Word has length 13 [2023-03-31 21:07:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:07:26,428 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 36 transitions. [2023-03-31 21:07:26,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2023-03-31 21:07:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-31 21:07:26,429 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:07:26,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:07:26,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 21:07:26,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:07:26,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:07:26,429 INFO L85 PathProgramCache]: Analyzing trace with hash 895203486, now seen corresponding path program 1 times [2023-03-31 21:07:26,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:07:26,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115726847] [2023-03-31 21:07:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:07:26,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:07:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:07:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:07:26,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:07:26,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115726847] [2023-03-31 21:07:26,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115726847] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:07:26,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:07:26,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 21:07:26,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947788165] [2023-03-31 21:07:26,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:07:26,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 21:07:26,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:07:26,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 21:07:26,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,502 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:07:26,515 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2023-03-31 21:07:26,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 21:07:26,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-03-31 21:07:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:07:26,516 INFO L225 Difference]: With dead ends: 37 [2023-03-31 21:07:26,517 INFO L226 Difference]: Without dead ends: 35 [2023-03-31 21:07:26,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,518 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 23 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:07:26,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 74 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:07:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-03-31 21:07:26,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2023-03-31 21:07:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2023-03-31 21:07:26,521 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 14 [2023-03-31 21:07:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:07:26,522 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2023-03-31 21:07:26,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2023-03-31 21:07:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 21:07:26,522 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:07:26,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:07:26,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 21:07:26,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:07:26,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:07:26,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1981719685, now seen corresponding path program 1 times [2023-03-31 21:07:26,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:07:26,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841110083] [2023-03-31 21:07:26,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:07:26,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:07:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:07:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:07:26,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:07:26,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841110083] [2023-03-31 21:07:26,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841110083] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:07:26,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:07:26,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 21:07:26,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099533826] [2023-03-31 21:07:26,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:07:26,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 21:07:26,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:07:26,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 21:07:26,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,569 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:07:26,583 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2023-03-31 21:07:26,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 21:07:26,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-03-31 21:07:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:07:26,585 INFO L225 Difference]: With dead ends: 35 [2023-03-31 21:07:26,585 INFO L226 Difference]: Without dead ends: 33 [2023-03-31 21:07:26,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,586 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:07:26,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 72 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:07:26,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-03-31 21:07:26,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2023-03-31 21:07:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-03-31 21:07:26,590 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 15 [2023-03-31 21:07:26,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:07:26,590 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-03-31 21:07:26,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-03-31 21:07:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-03-31 21:07:26,591 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:07:26,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:07:26,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 21:07:26,591 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:07:26,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:07:26,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1303983827, now seen corresponding path program 1 times [2023-03-31 21:07:26,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:07:26,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832550848] [2023-03-31 21:07:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:07:26,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:07:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:07:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:07:26,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:07:26,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832550848] [2023-03-31 21:07:26,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832550848] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:07:26,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:07:26,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 21:07:26,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665843838] [2023-03-31 21:07:26,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:07:26,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 21:07:26,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:07:26,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 21:07:26,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,666 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:07:26,689 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2023-03-31 21:07:26,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 21:07:26,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-03-31 21:07:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:07:26,691 INFO L225 Difference]: With dead ends: 33 [2023-03-31 21:07:26,691 INFO L226 Difference]: Without dead ends: 31 [2023-03-31 21:07:26,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,696 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:07:26,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 66 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:07:26,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-03-31 21:07:26,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2023-03-31 21:07:26,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2023-03-31 21:07:26,704 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 16 [2023-03-31 21:07:26,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:07:26,704 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2023-03-31 21:07:26,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,705 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2023-03-31 21:07:26,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 21:07:26,705 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:07:26,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:07:26,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 21:07:26,705 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:07:26,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:07:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1769009050, now seen corresponding path program 1 times [2023-03-31 21:07:26,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:07:26,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440258904] [2023-03-31 21:07:26,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:07:26,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:07:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:07:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:07:26,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:07:26,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440258904] [2023-03-31 21:07:26,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440258904] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:07:26,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:07:26,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 21:07:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190446180] [2023-03-31 21:07:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:07:26,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 21:07:26,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:07:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 21:07:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,765 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:07:26,781 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2023-03-31 21:07:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 21:07:26,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-03-31 21:07:26,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:07:26,785 INFO L225 Difference]: With dead ends: 27 [2023-03-31 21:07:26,785 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 21:07:26,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:07:26,786 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:07:26,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:07:26,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 21:07:26,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 21:07:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 21:07:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 21:07:26,787 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2023-03-31 21:07:26,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:07:26,787 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 21:07:26,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 21:07:26,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 21:07:26,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 21:07:26,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 21:07:26,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 21:07:26,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 21:07:26,810 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-03-31 21:07:26,810 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-03-31 21:07:26,810 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 21:07:26,810 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 21:07:26,810 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 21:07:26,811 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 21:07:26,811 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 21:07:26,811 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 21:07:26,811 INFO L899 garLoopResultBuilder]: For program point L93(line 93) no Hoare annotation was computed. [2023-03-31 21:07:26,811 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 6 137) no Hoare annotation was computed. [2023-03-31 21:07:26,811 INFO L899 garLoopResultBuilder]: For program point L118(line 118) no Hoare annotation was computed. [2023-03-31 21:07:26,811 INFO L899 garLoopResultBuilder]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2023-03-31 21:07:26,811 INFO L902 garLoopResultBuilder]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point L103(line 103) no Hoare annotation was computed. [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 39) no Hoare annotation was computed. [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 6 137) no Hoare annotation was computed. [2023-03-31 21:07:26,812 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 137) the Hoare annotation is: true [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 135) no Hoare annotation was computed. [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2023-03-31 21:07:26,812 INFO L899 garLoopResultBuilder]: For program point L123(line 123) no Hoare annotation was computed. [2023-03-31 21:07:26,813 INFO L899 garLoopResultBuilder]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2023-03-31 21:07:26,813 INFO L899 garLoopResultBuilder]: For program point L108(line 108) no Hoare annotation was computed. [2023-03-31 21:07:26,813 INFO L902 garLoopResultBuilder]: At program point L133(lines 7 137) the Hoare annotation is: true [2023-03-31 21:07:26,813 INFO L899 garLoopResultBuilder]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2023-03-31 21:07:26,813 INFO L899 garLoopResultBuilder]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2023-03-31 21:07:26,813 INFO L895 garLoopResultBuilder]: At program point ERROR(lines 7 137) the Hoare annotation is: false [2023-03-31 21:07:26,816 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:07:26,818 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 21:07:26,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 09:07:26 BoogieIcfgContainer [2023-03-31 21:07:26,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 21:07:26,825 INFO L158 Benchmark]: Toolchain (without parser) took 1714.10ms. Allocated memory is still 367.0MB. Free memory was 330.3MB in the beginning and 333.4MB in the end (delta: -3.1MB). Peak memory consumption was 139.5MB. Max. memory is 8.0GB. [2023-03-31 21:07:26,826 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 21:07:26,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.92ms. Allocated memory is still 367.0MB. Free memory was 330.3MB in the beginning and 319.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 21:07:26,826 INFO L158 Benchmark]: Boogie Preprocessor took 47.14ms. Allocated memory is still 367.0MB. Free memory was 319.3MB in the beginning and 317.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 21:07:26,827 INFO L158 Benchmark]: RCFGBuilder took 404.33ms. Allocated memory is still 367.0MB. Free memory was 317.7MB in the beginning and 297.3MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-03-31 21:07:26,828 INFO L158 Benchmark]: TraceAbstraction took 1037.12ms. Allocated memory is still 367.0MB. Free memory was 296.7MB in the beginning and 333.4MB in the end (delta: -36.6MB). Peak memory consumption was 105.9MB. Max. memory is 8.0GB. [2023-03-31 21:07:26,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 183.5MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.92ms. Allocated memory is still 367.0MB. Free memory was 330.3MB in the beginning and 319.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.14ms. Allocated memory is still 367.0MB. Free memory was 319.3MB in the beginning and 317.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 404.33ms. Allocated memory is still 367.0MB. Free memory was 317.7MB in the beginning and 297.3MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 1037.12ms. Allocated memory is still 367.0MB. Free memory was 296.7MB in the beginning and 333.4MB in the end (delta: -36.6MB). Peak memory consumption was 105.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 135]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 194 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 194 mSDsluCounter, 639 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 379 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 260 mSDtfsCounter, 102 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 84 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 10 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 332 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-03-31 21:07:26,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...