/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-simple/nested_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:29:44,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:29:44,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:29:44,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 22:29:44,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-09 22:29:44,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-09 22:29:44,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-09 22:29:44,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-09 22:29:44,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-09 22:29:44,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-09 22:29:44,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-09 22:29:44,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-09 22:29:44,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-09 22:29:44,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-09 22:29:44,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-09 22:29:44,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-09 22:29:44,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-09 22:29:44,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:29:44,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:29:44,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:29:44,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 22:29:44,144 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:29:44,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:29:44,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:29:44,145 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:29:44,145 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:29:44,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:29:44,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:29:44,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:29:44,146 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:29:44,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:29:44,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:29:44,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:29:44,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:29:44,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:29:44,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:29:44,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:29:44,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:29:44,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:29:44,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:29:44,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:29:44,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:29:44,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:29:44,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:29:44,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:29:44,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:29:44,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:29:44,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:29:44,149 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:29:44,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:29:44,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:29:44,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:29:44,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:29:44,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:29:44,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:29:44,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:29:44,365 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:29:44,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_2.c [2022-01-09 22:29:44,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df47e21e0/2c39e77be1fb456496caaf4b896f90d3/FLAGbd2d75d8c [2022-01-09 22:29:44,700 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:29:44,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_2.c [2022-01-09 22:29:44,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df47e21e0/2c39e77be1fb456496caaf4b896f90d3/FLAGbd2d75d8c [2022-01-09 22:29:45,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df47e21e0/2c39e77be1fb456496caaf4b896f90d3 [2022-01-09 22:29:45,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:29:45,143 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:29:45,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:29:45,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:29:45,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:29:45,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216f43ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45, skipping insertion in model container [2022-01-09 22:29:45,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:29:45,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:29:45,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_2.c[730,743] [2022-01-09 22:29:45,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:29:45,268 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:29:45,280 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_2.c[730,743] [2022-01-09 22:29:45,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:29:45,290 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:29:45,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45 WrapperNode [2022-01-09 22:29:45,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:29:45,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:29:45,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:29:45,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:29:45,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,320 INFO L137 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2022-01-09 22:29:45,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:29:45,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:29:45,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:29:45,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:29:45,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:29:45,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:29:45,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:29:45,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:29:45,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45" (1/1) ... [2022-01-09 22:29:45,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:29:45,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:29:45,360 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) [2022-01-09 22:29:45,365 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 [2022-01-09 22:29:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:29:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:29:45,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:29:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:29:45,429 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:29:45,430 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:29:45,505 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:29:45,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:29:45,509 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-09 22:29:45,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:29:45 BoogieIcfgContainer [2022-01-09 22:29:45,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:29:45,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:29:45,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:29:45,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:29:45,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:29:45" (1/3) ... [2022-01-09 22:29:45,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed5e688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:29:45, skipping insertion in model container [2022-01-09 22:29:45,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:29:45" (2/3) ... [2022-01-09 22:29:45,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed5e688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:29:45, skipping insertion in model container [2022-01-09 22:29:45,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:29:45" (3/3) ... [2022-01-09 22:29:45,519 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_2.c [2022-01-09 22:29:45,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:29:45,523 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:29:45,555 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:29:45,565 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 22:29:45,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:29:45,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2022-01-09 22:29:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-09 22:29:45,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:29:45,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-09 22:29:45,578 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:29:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:29:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash 28697382, now seen corresponding path program 1 times [2022-01-09 22:29:45,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:29:45,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743646758] [2022-01-09 22:29:45,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:29:45,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:29:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:29:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:29:45,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:29:45,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743646758] [2022-01-09 22:29:45,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743646758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:29:45,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:29:45,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 22:29:45,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158551538] [2022-01-09 22:29:45,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:29:45,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 22:29:45,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:29:45,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 22:29:45,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 22:29:45,772 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-01-09 22:29:45,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:29:45,797 INFO L93 Difference]: Finished difference Result 28 states and 40 transitions. [2022-01-09 22:29:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 22:29:45,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2022-01-09 22:29:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:29:45,805 INFO L225 Difference]: With dead ends: 28 [2022-01-09 22:29:45,806 INFO L226 Difference]: Without dead ends: 13 [2022-01-09 22:29:45,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 22:29:45,813 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:29:45,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 20 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:29:45,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-09 22:29:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2022-01-09 22:29:45,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-01-09 22:29:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-01-09 22:29:45,834 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 5 [2022-01-09 22:29:45,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:29:45,834 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-01-09 22:29:45,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-01-09 22:29:45,834 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-01-09 22:29:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-09 22:29:45,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:29:45,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:29:45,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 22:29:45,835 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:29:45,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:29:45,836 INFO L85 PathProgramCache]: Analyzing trace with hash 269344378, now seen corresponding path program 1 times [2022-01-09 22:29:45,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:29:45,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299554416] [2022-01-09 22:29:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:29:45,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:29:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:29:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:29:45,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:29:45,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299554416] [2022-01-09 22:29:45,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299554416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:29:45,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:29:45,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 22:29:45,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709073041] [2022-01-09 22:29:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:29:45,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 22:29:45,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:29:45,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 22:29:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 22:29:45,863 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-01-09 22:29:45,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:29:45,879 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2022-01-09 22:29:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 22:29:45,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2022-01-09 22:29:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:29:45,880 INFO L225 Difference]: With dead ends: 19 [2022-01-09 22:29:45,881 INFO L226 Difference]: Without dead ends: 12 [2022-01-09 22:29:45,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 22:29:45,886 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:29:45,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:29:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-09 22:29:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-01-09 22:29:45,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-01-09 22:29:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-01-09 22:29:45,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2022-01-09 22:29:45,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:29:45,893 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-01-09 22:29:45,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-01-09 22:29:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-01-09 22:29:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-09 22:29:45,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:29:45,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:29:45,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 22:29:45,895 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:29:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:29:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1485378760, now seen corresponding path program 1 times [2022-01-09 22:29:45,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:29:45,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774029642] [2022-01-09 22:29:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:29:45,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:29:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:29:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:29:45,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:29:45,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774029642] [2022-01-09 22:29:45,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774029642] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:29:45,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281036692] [2022-01-09 22:29:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:29:45,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:29:45,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:29:45,939 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) [2022-01-09 22:29:45,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 22:29:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:29:45,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 22:29:45,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:29:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:29:46,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:29:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:29:46,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281036692] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:29:46,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:29:46,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-09 22:29:46,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559904762] [2022-01-09 22:29:46,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:29:46,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-09 22:29:46,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:29:46,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-09 22:29:46,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-09 22:29:46,077 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-01-09 22:29:46,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:29:46,101 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-01-09 22:29:46,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-09 22:29:46,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) Word has length 10 [2022-01-09 22:29:46,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:29:46,102 INFO L225 Difference]: With dead ends: 25 [2022-01-09 22:29:46,102 INFO L226 Difference]: Without dead ends: 17 [2022-01-09 22:29:46,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-09 22:29:46,103 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:29:46,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 24 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:29:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-09 22:29:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-09 22:29:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2022-01-09 22:29:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-01-09 22:29:46,107 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2022-01-09 22:29:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:29:46,107 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-01-09 22:29:46,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-01-09 22:29:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-01-09 22:29:46,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-09 22:29:46,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:29:46,108 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:29:46,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 22:29:46,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:29:46,325 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:29:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:29:46,325 INFO L85 PathProgramCache]: Analyzing trace with hash 697844850, now seen corresponding path program 2 times [2022-01-09 22:29:46,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:29:46,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016955745] [2022-01-09 22:29:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:29:46,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:29:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:29:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-09 22:29:46,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:29:46,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016955745] [2022-01-09 22:29:46,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016955745] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:29:46,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298873910] [2022-01-09 22:29:46,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 22:29:46,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:29:46,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:29:46,358 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) [2022-01-09 22:29:46,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 22:29:46,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 22:29:46,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 22:29:46,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 22:29:46,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:29:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:29:46,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:29:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:29:46,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298873910] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:29:46,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:29:46,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 10 [2022-01-09 22:29:46,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996146155] [2022-01-09 22:29:46,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:29:46,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-09 22:29:46,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:29:46,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-09 22:29:46,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-09 22:29:46,494 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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) [2022-01-09 22:29:46,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:29:46,608 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-01-09 22:29:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-09 22:29:46,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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) Word has length 16 [2022-01-09 22:29:46,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:29:46,609 INFO L225 Difference]: With dead ends: 64 [2022-01-09 22:29:46,609 INFO L226 Difference]: Without dead ends: 50 [2022-01-09 22:29:46,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2022-01-09 22:29:46,611 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 36 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:29:46,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:29:46,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-09 22:29:46,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2022-01-09 22:29:46,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 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) [2022-01-09 22:29:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2022-01-09 22:29:46,617 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 16 [2022-01-09 22:29:46,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:29:46,618 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2022-01-09 22:29:46,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 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) [2022-01-09 22:29:46,618 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-01-09 22:29:46,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-09 22:29:46,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:29:46,619 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1] [2022-01-09 22:29:46,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 22:29:46,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-09 22:29:46,833 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:29:46,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:29:46,833 INFO L85 PathProgramCache]: Analyzing trace with hash 750610982, now seen corresponding path program 3 times [2022-01-09 22:29:46,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:29:46,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723416983] [2022-01-09 22:29:46,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:29:46,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:29:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:29:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-01-09 22:29:46,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:29:46,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723416983] [2022-01-09 22:29:46,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723416983] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:29:46,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123598735] [2022-01-09 22:29:46,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 22:29:46,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:29:46,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:29:46,886 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) [2022-01-09 22:29:46,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 22:29:46,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-01-09 22:29:46,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 22:29:46,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-09 22:29:46,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:29:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-09 22:29:47,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 22:29:47,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123598735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:29:47,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 22:29:47,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-01-09 22:29:47,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052873281] [2022-01-09 22:29:47,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:29:47,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-09 22:29:47,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:29:47,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-09 22:29:47,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-09 22:29:47,089 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2022-01-09 22:29:47,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:29:47,108 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-01-09 22:29:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-09 22:29:47,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) Word has length 35 [2022-01-09 22:29:47,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:29:47,110 INFO L225 Difference]: With dead ends: 36 [2022-01-09 22:29:47,110 INFO L226 Difference]: Without dead ends: 0 [2022-01-09 22:29:47,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-09 22:29:47,111 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:29:47,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:29:47,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-09 22:29:47,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-09 22:29:47,112 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) [2022-01-09 22:29:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-09 22:29:47,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2022-01-09 22:29:47,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:29:47,112 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-09 22:29:47,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2022-01-09 22:29:47,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-09 22:29:47,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-09 22:29:47,114 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-09 22:29:47,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-09 22:29:47,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:29:47,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-09 22:29:47,386 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-09 22:29:47,387 INFO L858 garLoopResultBuilder]: For program point L25-1(lines 25 27) no Hoare annotation was computed. [2022-01-09 22:29:47,387 INFO L858 garLoopResultBuilder]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2022-01-09 22:29:47,387 INFO L854 garLoopResultBuilder]: At program point L21-3(lines 21 23) the Hoare annotation is: (and (< |ULTIMATE.start_main_~a~0#1| 6) (< |ULTIMATE.start_main_~b~0#1| 7)) [2022-01-09 22:29:47,387 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-09 22:29:47,387 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-09 22:29:47,387 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-09 22:29:47,387 INFO L861 garLoopResultBuilder]: At program point L28(lines 15 29) the Hoare annotation is: true [2022-01-09 22:29:47,387 INFO L858 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-01-09 22:29:47,388 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2022-01-09 22:29:47,388 INFO L858 garLoopResultBuilder]: For program point L20-2(lines 20 24) no Hoare annotation was computed. [2022-01-09 22:29:47,388 INFO L854 garLoopResultBuilder]: At program point L20-3(lines 20 24) the Hoare annotation is: (and (not (< |ULTIMATE.start_main_~b~0#1| 6)) (< |ULTIMATE.start_main_~a~0#1| 7) (< |ULTIMATE.start_main_~b~0#1| 7)) [2022-01-09 22:29:47,388 INFO L858 garLoopResultBuilder]: For program point L20-4(lines 15 29) no Hoare annotation was computed. [2022-01-09 22:29:47,390 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-01-09 22:29:47,391 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-09 22:29:47,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:29:47 BoogieIcfgContainer [2022-01-09 22:29:47,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-09 22:29:47,416 INFO L158 Benchmark]: Toolchain (without parser) took 2272.63ms. Allocated memory is still 206.6MB. Free memory was 156.8MB in the beginning and 80.0MB in the end (delta: 76.8MB). Peak memory consumption was 77.0MB. Max. memory is 8.0GB. [2022-01-09 22:29:47,416 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory was 172.8MB in the beginning and 172.7MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:29:47,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.35ms. Allocated memory is still 206.6MB. Free memory was 156.5MB in the beginning and 183.3MB in the end (delta: -26.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-09 22:29:47,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.45ms. Allocated memory is still 206.6MB. Free memory was 182.7MB in the beginning and 181.6MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-09 22:29:47,417 INFO L158 Benchmark]: Boogie Preprocessor took 14.67ms. Allocated memory is still 206.6MB. Free memory was 181.6MB in the beginning and 180.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-09 22:29:47,417 INFO L158 Benchmark]: RCFGBuilder took 175.63ms. Allocated memory is still 206.6MB. Free memory was 180.5MB in the beginning and 171.2MB in the end (delta: 9.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-09 22:29:47,417 INFO L158 Benchmark]: TraceAbstraction took 1902.19ms. Allocated memory is still 206.6MB. Free memory was 170.7MB in the beginning and 80.0MB in the end (delta: 90.7MB). Peak memory consumption was 91.2MB. Max. memory is 8.0GB. [2022-01-09 22:29:47,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory was 172.8MB in the beginning and 172.7MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 148.35ms. Allocated memory is still 206.6MB. Free memory was 156.5MB in the beginning and 183.3MB in the end (delta: -26.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.45ms. Allocated memory is still 206.6MB. Free memory was 182.7MB in the beginning and 181.6MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.67ms. Allocated memory is still 206.6MB. Free memory was 181.6MB in the beginning and 180.5MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 175.63ms. Allocated memory is still 206.6MB. Free memory was 180.5MB in the beginning and 171.2MB in the end (delta: 9.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1902.19ms. Allocated memory is still 206.6MB. Free memory was 170.7MB in the beginning and 80.0MB in the end (delta: 90.7MB). Peak memory consumption was 91.2MB. 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: 26]: 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 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 36 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 41, 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, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 21 NumberOfFragments, 19 HoareAnnotationTreeSize, 3 FomulaSimplifications, 143 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 113 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 363 SizeOfPredicates, 2 NumberOfNonLiveVariables, 171 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 255/380 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: 21]: Loop Invariant Derived loop invariant: a < 6 && b < 7 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (!(b < 6) && a < 7) && b < 7 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-01-09 22:29:47,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...