/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-simple/nested_1b.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-05ce600
[2022-02-24 04:00:51,579 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-02-24 04:00:51,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-24 04:00:51,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-24 04:00:51,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-24 04:00:51,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-24 04:00:51,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-02-24 04:00:51,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-02-24 04:00:51,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
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[2022-02-24 04:00:51,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-24 04:00:51,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-24 04:00:51,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-24 04:00:51,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-24 04:00:51,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-24 04:00:51,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-24 04:00:51,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-24 04:00:51,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-02-24 04:00:51,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2022-02-24 04:00:51,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-02-24 04:00:51,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf
[2022-02-24 04:00:51,719 INFO L113 SettingsManager]: Loading preferences was successful
[2022-02-24 04:00:51,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-24 04:00:51,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-24 04:00:51,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-24 04:00:51,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-24 04:00:51,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-24 04:00:51,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-24 04:00:51,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-24 04:00:51,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-24 04:00:51,722 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-24 04:00:51,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-24 04:00:51,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-24 04:00:51,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-24 04:00:51,723 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-24 04:00:51,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-24 04:00:51,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-24 04:00:51,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-24 04:00:51,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-02-24 04:00:51,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-24 04:00:51,724 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR
[2022-02-24 04:00:51,724 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-24 04:00:51,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-24 04:00:52,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-24 04:00:52,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-24 04:00:52,013 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-02-24 04:00:52,014 INFO L275 PluginConnector]: CDTParser initialized
[2022-02-24 04:00:52,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_1b.c
[2022-02-24 04:00:52,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59d5efa6/91fd3dbd19e840509058a45d51c28e92/FLAG3a892c6c9
[2022-02-24 04:00:52,498 INFO L306 CDTParser]: Found 1 translation units.
[2022-02-24 04:00:52,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_1b.c
[2022-02-24 04:00:52,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59d5efa6/91fd3dbd19e840509058a45d51c28e92/FLAG3a892c6c9
[2022-02-24 04:00:52,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59d5efa6/91fd3dbd19e840509058a45d51c28e92
[2022-02-24 04:00:52,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-24 04:00:52,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-24 04:00:52,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-24 04:00:52,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-24 04:00:52,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-24 04:00:52,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:00:52" (1/1) ...
[2022-02-24 04:00:52,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1031a03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:00:52, skipping insertion in model container
[2022-02-24 04:00:52,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:00:52" (1/1) ...
[2022-02-24 04:00:52,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-02-24 04:00:52,553 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-02-24 04:00:52,677 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_1b.c[674,687]
[2022-02-24 04:00:52,680 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-24 04:00:52,690 INFO L203 MainTranslator]: Completed pre-run
[2022-02-24 04:00:52,700 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_1b.c[674,687]
[2022-02-24 04:00:52,700 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-24 04:00:52,714 INFO L208 MainTranslator]: Completed translation
[2022-02-24 04:00:52,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:00:52 WrapperNode
[2022-02-24 04:00:52,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-24 04:00:52,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-24 04:00:52,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-24 04:00:52,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-24 04:00:52,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:00:52" (1/1) ...
[2022-02-24 04:00:52,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:00:52" (1/1) ...
[2022-02-24 04:00:52,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:00:52" (1/1) ...
[2022-02-24 04:00:52,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:00:52" (1/1) ...
[2022-02-24 04:00:52,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:00:52" (1/1) ...
[2022-02-24 04:00:52,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:00:52" (1/1) ...
[2022-02-24 04:00:52,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:00:52" (1/1) ...
[2022-02-24 04:00:52,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-24 04:00:52,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-24 04:00:52,752 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-24 04:00:52,753 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-24 04:00:52,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:00:52" (1/1) ...
[2022-02-24 04:00:52,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-24 04:00:52,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-24 04:00:52,785 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)
[2022-02-24 04:00:52,803 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
[2022-02-24 04:00:52,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-24 04:00:52,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-24 04:00:52,821 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-24 04:00:52,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-02-24 04:00:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-24 04:00:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-24 04:00:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-24 04:00:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-02-24 04:00:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-24 04:00:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-24 04:00:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-24 04:00:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-02-24 04:00:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-02-24 04:00:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-24 04:00:52,883 INFO L234 CfgBuilder]: Building ICFG
[2022-02-24 04:00:52,886 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-24 04:00:53,000 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-24 04:00:53,005 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-24 04:00:53,006 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2022-02-24 04:00:53,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:00:53 BoogieIcfgContainer
[2022-02-24 04:00:53,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-24 04:00:53,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-24 04:00:53,012 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-24 04:00:53,016 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-24 04:00:53,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:00:52" (1/3) ...
[2022-02-24 04:00:53,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d3b10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:00:53, skipping insertion in model container
[2022-02-24 04:00:53,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:00:52" (2/3) ...
[2022-02-24 04:00:53,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d3b10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:00:53, skipping insertion in model container
[2022-02-24 04:00:53,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:00:53" (3/3) ...
[2022-02-24 04:00:53,019 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_1b.c
[2022-02-24 04:00:53,026 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-02-24 04:00:53,026 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-24 04:00:53,073 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-24 04:00:53,091 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=QVASR
[2022-02-24 04:00:53,091 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-24 04:00:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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)
[2022-02-24 04:00:53,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-02-24 04:00:53,124 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 04:00:53,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 04:00:53,125 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 04:00:53,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 04:00:53,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1887993331, now seen corresponding path program 1 times
[2022-02-24 04:00:53,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 04:00:53,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107282742]
[2022-02-24 04:00:53,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 04:00:53,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 04:00:53,201 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-24 04:00:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:53,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 04:00:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 04:00:53,351 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 04:00:53,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107282742]
[2022-02-24 04:00:53,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2107282742] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 04:00:53,353 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 04:00:53,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-24 04:00:53,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585906983]
[2022-02-24 04:00:53,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 04:00:53,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-24 04:00:53,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 04:00:53,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-24 04:00:53,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-24 04:00:53,381 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 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)
[2022-02-24 04:00:53,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 04:00:53,406 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions.
[2022-02-24 04:00:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-02-24 04:00:53,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 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) Word has length 9
[2022-02-24 04:00:53,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 04:00:53,415 INFO L225 Difference]: With dead ends: 24
[2022-02-24 04:00:53,415 INFO L226 Difference]: Without dead ends: 11
[2022-02-24 04:00:53,417 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
[2022-02-24 04:00:53,420 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 04:00:53,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 04:00:53,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2022-02-24 04:00:53,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11.
[2022-02-24 04:00:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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)
[2022-02-24 04:00:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions.
[2022-02-24 04:00:53,450 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9
[2022-02-24 04:00:53,450 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 04:00:53,450 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions.
[2022-02-24 04:00:53,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 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)
[2022-02-24 04:00:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions.
[2022-02-24 04:00:53,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-02-24 04:00:53,451 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 04:00:53,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 04:00:53,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-24 04:00:53,452 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 04:00:53,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 04:00:53,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1887999097, now seen corresponding path program 1 times
[2022-02-24 04:00:53,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 04:00:53,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046685950]
[2022-02-24 04:00:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 04:00:53,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 04:00:53,455 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-24 04:00:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:53,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 04:00:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 04:00:53,548 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 04:00:53,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046685950]
[2022-02-24 04:00:53,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1046685950] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 04:00:53,549 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 04:00:53,549 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-02-24 04:00:53,549 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667935626]
[2022-02-24 04:00:53,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 04:00:53,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-02-24 04:00:53,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 04:00:53,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-02-24 04:00:53,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-02-24 04:00:53,551 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 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)
[2022-02-24 04:00:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 04:00:53,600 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions.
[2022-02-24 04:00:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-02-24 04:00:53,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 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) Word has length 9
[2022-02-24 04:00:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 04:00:53,601 INFO L225 Difference]: With dead ends: 16
[2022-02-24 04:00:53,601 INFO L226 Difference]: Without dead ends: 13
[2022-02-24 04:00:53,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-02-24 04:00:53,603 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 04:00:53,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 04:00:53,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2022-02-24 04:00:53,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12.
[2022-02-24 04:00:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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)
[2022-02-24 04:00:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2022-02-24 04:00:53,608 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9
[2022-02-24 04:00:53,608 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 04:00:53,609 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2022-02-24 04:00:53,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 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)
[2022-02-24 04:00:53,609 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2022-02-24 04:00:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-02-24 04:00:53,609 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 04:00:53,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 04:00:53,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-24 04:00:53,610 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 04:00:53,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 04:00:53,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1889274843, now seen corresponding path program 1 times
[2022-02-24 04:00:53,611 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 04:00:53,611 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383156685]
[2022-02-24 04:00:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 04:00:53,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 04:00:53,716 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-02-24 04:00:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 04:00:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 04:00:53,831 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 04:00:53,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383156685]
[2022-02-24 04:00:53,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1383156685] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 04:00:53,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 04:00:53,837 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-24 04:00:53,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857819159]
[2022-02-24 04:00:53,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 04:00:53,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-24 04:00:53,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 04:00:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-24 04:00:53,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-24 04:00:53,840 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 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)
[2022-02-24 04:00:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 04:00:53,889 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions.
[2022-02-24 04:00:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-24 04:00:53,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 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) Word has length 11
[2022-02-24 04:00:53,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 04:00:53,890 INFO L225 Difference]: With dead ends: 18
[2022-02-24 04:00:53,890 INFO L226 Difference]: Without dead ends: 15
[2022-02-24 04:00:53,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-02-24 04:00:53,897 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 04:00:53,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 04:00:53,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2022-02-24 04:00:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14.
[2022-02-24 04:00:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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)
[2022-02-24 04:00:53,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2022-02-24 04:00:53,909 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11
[2022-02-24 04:00:53,909 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 04:00:53,909 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2022-02-24 04:00:53,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 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)
[2022-02-24 04:00:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2022-02-24 04:00:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-02-24 04:00:53,910 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 04:00:53,910 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 04:00:53,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-02-24 04:00:53,910 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 04:00:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 04:00:53,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1179700547, now seen corresponding path program 2 times
[2022-02-24 04:00:53,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 04:00:53,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860561736]
[2022-02-24 04:00:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 04:00:53,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 04:00:53,979 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-02-24 04:00:54,044 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-02-24 04:00:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 04:00:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 04:00:54,128 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 04:00:54,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860561736]
[2022-02-24 04:00:54,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [860561736] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 04:00:54,128 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 04:00:54,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-02-24 04:00:54,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251011141]
[2022-02-24 04:00:54,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 04:00:54,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-02-24 04:00:54,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 04:00:54,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-02-24 04:00:54,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-02-24 04:00:54,131 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 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)
[2022-02-24 04:00:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 04:00:54,181 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions.
[2022-02-24 04:00:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-02-24 04:00:54,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 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) Word has length 13
[2022-02-24 04:00:54,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 04:00:54,182 INFO L225 Difference]: With dead ends: 20
[2022-02-24 04:00:54,182 INFO L226 Difference]: Without dead ends: 17
[2022-02-24 04:00:54,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2022-02-24 04:00:54,183 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 04:00:54,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 04:00:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2022-02-24 04:00:54,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16.
[2022-02-24 04:00:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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)
[2022-02-24 04:00:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions.
[2022-02-24 04:00:54,187 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13
[2022-02-24 04:00:54,188 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 04:00:54,188 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions.
[2022-02-24 04:00:54,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 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)
[2022-02-24 04:00:54,188 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions.
[2022-02-24 04:00:54,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-02-24 04:00:54,188 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 04:00:54,188 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 04:00:54,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-02-24 04:00:54,189 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 04:00:54,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 04:00:54,189 INFO L85 PathProgramCache]: Analyzing trace with hash -177482015, now seen corresponding path program 3 times
[2022-02-24 04:00:54,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 04:00:54,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614319532]
[2022-02-24 04:00:54,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 04:00:54,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 04:00:54,226 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-02-24 04:00:54,287 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-02-24 04:00:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 04:00:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 04:00:54,366 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 04:00:54,366 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614319532]
[2022-02-24 04:00:54,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [614319532] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 04:00:54,366 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 04:00:54,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-02-24 04:00:54,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264882975]
[2022-02-24 04:00:54,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 04:00:54,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-02-24 04:00:54,367 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 04:00:54,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-02-24 04:00:54,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2022-02-24 04:00:54,368 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 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)
[2022-02-24 04:00:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 04:00:54,433 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions.
[2022-02-24 04:00:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-02-24 04:00:54,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 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) Word has length 15
[2022-02-24 04:00:54,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 04:00:54,434 INFO L225 Difference]: With dead ends: 22
[2022-02-24 04:00:54,434 INFO L226 Difference]: Without dead ends: 19
[2022-02-24 04:00:54,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2022-02-24 04:00:54,436 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 04:00:54,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 31 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 04:00:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2022-02-24 04:00:54,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18.
[2022-02-24 04:00:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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)
[2022-02-24 04:00:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions.
[2022-02-24 04:00:54,440 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15
[2022-02-24 04:00:54,441 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 04:00:54,441 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions.
[2022-02-24 04:00:54,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 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)
[2022-02-24 04:00:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions.
[2022-02-24 04:00:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-02-24 04:00:54,442 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 04:00:54,442 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 04:00:54,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-02-24 04:00:54,442 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 04:00:54,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 04:00:54,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1240133887, now seen corresponding path program 4 times
[2022-02-24 04:00:54,443 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 04:00:54,443 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158736440]
[2022-02-24 04:00:54,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 04:00:54,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 04:00:54,478 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-02-24 04:00:54,517 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-02-24 04:00:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 04:00:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 04:00:54,591 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 04:00:54,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158736440]
[2022-02-24 04:00:54,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1158736440] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 04:00:54,592 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 04:00:54,592 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-02-24 04:00:54,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125061092]
[2022-02-24 04:00:54,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 04:00:54,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-02-24 04:00:54,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 04:00:54,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-02-24 04:00:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2022-02-24 04:00:54,593 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 1 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)
[2022-02-24 04:00:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 04:00:54,674 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions.
[2022-02-24 04:00:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-02-24 04:00:54,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 1 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) Word has length 17
[2022-02-24 04:00:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 04:00:54,675 INFO L225 Difference]: With dead ends: 24
[2022-02-24 04:00:54,675 INFO L226 Difference]: Without dead ends: 21
[2022-02-24 04:00:54,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156
[2022-02-24 04:00:54,676 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 04:00:54,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 04:00:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2022-02-24 04:00:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20.
[2022-02-24 04:00:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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)
[2022-02-24 04:00:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions.
[2022-02-24 04:00:54,681 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17
[2022-02-24 04:00:54,682 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 04:00:54,682 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions.
[2022-02-24 04:00:54,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 1 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)
[2022-02-24 04:00:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions.
[2022-02-24 04:00:54,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-02-24 04:00:54,682 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 04:00:54,683 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 04:00:54,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-02-24 04:00:54,683 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 04:00:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 04:00:54,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2064382877, now seen corresponding path program 5 times
[2022-02-24 04:00:54,683 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 04:00:54,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824353804]
[2022-02-24 04:00:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 04:00:54,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 04:00:54,718 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-02-24 04:00:54,749 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-02-24 04:00:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:54,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 04:00:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 04:00:54,834 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 04:00:54,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824353804]
[2022-02-24 04:00:54,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1824353804] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 04:00:54,834 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 04:00:54,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-02-24 04:00:54,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654414798]
[2022-02-24 04:00:54,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 04:00:54,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-02-24 04:00:54,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 04:00:54,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-02-24 04:00:54,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2022-02-24 04:00:54,836 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 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)
[2022-02-24 04:00:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 04:00:54,930 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions.
[2022-02-24 04:00:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-02-24 04:00:54,931 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 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) Word has length 19
[2022-02-24 04:00:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 04:00:54,932 INFO L225 Difference]: With dead ends: 26
[2022-02-24 04:00:54,932 INFO L226 Difference]: Without dead ends: 23
[2022-02-24 04:00:54,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210
[2022-02-24 04:00:54,933 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-24 04:00:54,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 41 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-24 04:00:54,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2022-02-24 04:00:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22.
[2022-02-24 04:00:54,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 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)
[2022-02-24 04:00:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions.
[2022-02-24 04:00:54,938 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19
[2022-02-24 04:00:54,938 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 04:00:54,938 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions.
[2022-02-24 04:00:54,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 1 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)
[2022-02-24 04:00:54,938 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions.
[2022-02-24 04:00:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-02-24 04:00:54,939 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-24 04:00:54,939 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-24 04:00:54,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-02-24 04:00:54,939 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-24 04:00:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-24 04:00:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash -401287493, now seen corresponding path program 6 times
[2022-02-24 04:00:54,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-24 04:00:54,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093611290]
[2022-02-24 04:00:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-24 04:00:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-24 04:00:54,978 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-02-24 04:00:55,021 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE
[2022-02-24 04:00:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-24 04:00:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-24 04:00:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-24 04:00:55,123 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-24 04:00:55,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093611290]
[2022-02-24 04:00:55,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [2093611290] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-24 04:00:55,124 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-24 04:00:55,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-02-24 04:00:55,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822245887]
[2022-02-24 04:00:55,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-24 04:00:55,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-02-24 04:00:55,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-24 04:00:55,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-02-24 04:00:55,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2022-02-24 04:00:55,125 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 1 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)
[2022-02-24 04:00:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-24 04:00:55,271 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions.
[2022-02-24 04:00:55,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-02-24 04:00:55,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 1 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) Word has length 21
[2022-02-24 04:00:55,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-24 04:00:55,272 INFO L225 Difference]: With dead ends: 26
[2022-02-24 04:00:55,272 INFO L226 Difference]: Without dead ends: 0
[2022-02-24 04:00:55,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272
[2022-02-24 04:00:55,273 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-24 04:00:55,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 43 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-24 04:00:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-02-24 04:00:55,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-02-24 04:00:55,274 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)
[2022-02-24 04:00:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-02-24 04:00:55,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21
[2022-02-24 04:00:55,275 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-24 04:00:55,275 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-02-24 04:00:55,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 1 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)
[2022-02-24 04:00:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-02-24 04:00:55,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-02-24 04:00:55,278 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-02-24 04:00:55,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-02-24 04:00:55,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2022-02-24 04:00:55,462 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 13) no Hoare annotation was computed.
[2022-02-24 04:00:55,463 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 13) no Hoare annotation was computed.
[2022-02-24 04:00:55,463 INFO L858 garLoopResultBuilder]: For program point reach_errorFINAL(line 13) no Hoare annotation was computed.
[2022-02-24 04:00:55,463 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2022-02-24 04:00:55,463 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))
[2022-02-24 04:00:55,463 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true
[2022-02-24 04:00:55,463 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true
[2022-02-24 04:00:55,463 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true
[2022-02-24 04:00:55,463 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2022-02-24 04:00:55,463 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true
[2022-02-24 04:00:55,464 INFO L854 garLoopResultBuilder]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) the Hoare annotation is: false
[2022-02-24 04:00:55,464 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 15 26) the Hoare annotation is: true
[2022-02-24 04:00:55,464 INFO L861 garLoopResultBuilder]: At program point mainEXIT(lines 15 26) the Hoare annotation is: true
[2022-02-24 04:00:55,464 INFO L854 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (= 3 (+ main_~a~0 (- 3)))
[2022-02-24 04:00:55,464 INFO L861 garLoopResultBuilder]: At program point L22-1(lines 22 24) the Hoare annotation is: true
[2022-02-24 04:00:55,464 INFO L854 garLoopResultBuilder]: At program point L19-2(lines 19 21) the Hoare annotation is: (or (= main_~a~0 0) (= main_~a~0 1) (= 5 main_~a~0) (= main_~a~0 3) (= main_~a~0 2) (= main_~a~0 4))
[2022-02-24 04:00:55,464 INFO L854 garLoopResultBuilder]: At program point L19-3(lines 19 21) the Hoare annotation is: (or (= main_~a~0 0) (= main_~a~0 1) (= main_~a~0 6) (= 5 main_~a~0) (= main_~a~0 3) (= main_~a~0 2) (= main_~a~0 4))
[2022-02-24 04:00:55,464 INFO L854 garLoopResultBuilder]: At program point L19-4(lines 15 26) the Hoare annotation is: (= 3 (+ main_~a~0 (- 3)))
[2022-02-24 04:00:55,464 INFO L861 garLoopResultBuilder]: At program point mainFINAL(lines 15 26) the Hoare annotation is: true
[2022-02-24 04:00:55,467 INFO L732 BasicCegarLoop]: Path program histogram: [6, 1, 1]
[2022-02-24 04:00:55,468 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-24 04:00:55,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:00:55 BoogieIcfgContainer
[2022-02-24 04:00:55,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-24 04:00:55,482 INFO L158 Benchmark]: Toolchain (without parser) took 2955.43ms. Allocated memory was 164.6MB in the beginning and 209.7MB in the end (delta: 45.1MB). Free memory was 111.0MB in the beginning and 87.8MB in the end (delta: 23.2MB). Peak memory consumption was 67.9MB. Max. memory is 8.0GB.
[2022-02-24 04:00:55,482 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 164.6MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-24 04:00:55,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.14ms. Allocated memory was 164.6MB in the beginning and 209.7MB in the end (delta: 45.1MB). Free memory was 110.8MB in the beginning and 185.4MB in the end (delta: -74.6MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB.
[2022-02-24 04:00:55,483 INFO L158 Benchmark]: Boogie Preprocessor took 35.89ms. Allocated memory is still 209.7MB. Free memory was 185.4MB in the beginning and 183.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-24 04:00:55,483 INFO L158 Benchmark]: RCFGBuilder took 257.99ms. Allocated memory is still 209.7MB. Free memory was 183.8MB in the beginning and 174.4MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
[2022-02-24 04:00:55,485 INFO L158 Benchmark]: TraceAbstraction took 2469.56ms. Allocated memory is still 209.7MB. Free memory was 173.8MB in the beginning and 87.8MB in the end (delta: 86.1MB). Peak memory consumption was 86.0MB. Max. memory is 8.0GB.
[2022-02-24 04:00:55,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.12ms. Allocated memory is still 164.6MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 186.14ms. Allocated memory was 164.6MB in the beginning and 209.7MB in the end (delta: 45.1MB). Free memory was 110.8MB in the beginning and 185.4MB in the end (delta: -74.6MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 35.89ms. Allocated memory is still 209.7MB. Free memory was 185.4MB in the beginning and 183.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 257.99ms. Allocated memory is still 209.7MB. Free memory was 183.8MB in the beginning and 174.4MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB.
* TraceAbstraction took 2469.56ms. Allocated memory is still 209.7MB. Free memory was 173.8MB in the beginning and 87.8MB in the end (delta: 86.1MB). Peak memory consumption was 86.0MB. 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: 23]: 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, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 81 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81 mSDsluCounter, 233 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 380 IncrementalHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 76 mSDtfsCounter, 380 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 65 SyntacticMatches, 11 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=7, InterpolantAutomatonStates: 52, 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, 6 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 16 PreInvPairs, 36 NumberOfFragments, 69 HoareAnnotationTreeSize, 16 FomulaSimplifications, 131 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 16 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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: 19]: Loop Invariant
Derived loop invariant: (((((a == 0 || a == 1) || a == 6) || 5 == a) || a == 3) || a == 2) || a == 4
- ProcedureContractResult [Line: 15]: Procedure Contract for main
Derived contract for procedure main: 1
RESULT: Ultimate proved your program to be correct!
[2022-02-24 04:00:55,521 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...