/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-invgen/apache-get-tag.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-34549b5
[2022-04-06 19:59:06,593 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-04-06 19:59:06,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-04-06 19:59:06,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-04-06 19:59:06,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-04-06 19:59:06,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-04-06 19:59:06,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-04-06 19:59:06,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-04-06 19:59:06,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-04-06 19:59:06,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-04-06 19:59:06,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-04-06 19:59:06,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-04-06 19:59:06,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-04-06 19:59:06,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-04-06 19:59:06,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-04-06 19:59:06,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-04-06 19:59:06,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-04-06 19:59:06,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-04-06 19:59:06,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-04-06 19:59:06,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-04-06 19:59:06,652 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values
[2022-04-06 19:59:06,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-04-06 19:59:06,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-04-06 19:59:06,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-04-06 19:59:06,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-04-06 19:59:06,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-04-06 19:59:06,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-04-06 19:59:06,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-04-06 19:59:06,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-04-06 19:59:06,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-04-06 19:59:06,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-04-06 19:59:06,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-04-06 19:59:06,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-04-06 19:59:06,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-04-06 19:59:06,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-04-06 19:59:06,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-04-06 19:59:06,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-04-06 19:59:06,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-04-06 19:59:06,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-04-06 19:59:06,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-04-06 19:59:06,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-04-06 19:59:06,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf
[2022-04-06 19:59:06,681 INFO L113 SettingsManager]: Loading preferences was successful
[2022-04-06 19:59:06,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-04-06 19:59:06,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-04-06 19:59:06,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-04-06 19:59:06,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-04-06 19:59:06,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-04-06 19:59:06,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-04-06 19:59:06,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-04-06 19:59:06,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-04-06 19:59:06,684 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-04-06 19:59:06,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-04-06 19:59:06,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-04-06 19:59:06,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-04-06 19:59:06,685 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-04-06 19:59:06,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-04-06 19:59:06,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-06 19:59:06,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-04-06 19:59:06,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation
[2022-04-06 19:59:06,686 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION
[2022-04-06 19:59:06,686 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL
[2022-04-06 19:59:06,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-04-06 19:59:06,687 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR
[2022-04-06 19:59:06,687 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-04-06 19:59:06,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-04-06 19:59:06,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-04-06 19:59:06,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-04-06 19:59:06,913 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-04-06 19:59:06,915 INFO L275 PluginConnector]: CDTParser initialized
[2022-04-06 19:59:06,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i
[2022-04-06 19:59:06,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ebd57106/0848abc3edf94f7296616bb14f6191a3/FLAG523706a8a
[2022-04-06 19:59:07,256 INFO L306 CDTParser]: Found 1 translation units.
[2022-04-06 19:59:07,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i
[2022-04-06 19:59:07,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ebd57106/0848abc3edf94f7296616bb14f6191a3/FLAG523706a8a
[2022-04-06 19:59:07,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ebd57106/0848abc3edf94f7296616bb14f6191a3
[2022-04-06 19:59:07,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-04-06 19:59:07,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-04-06 19:59:07,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-04-06 19:59:07,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-04-06 19:59:07,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-04-06 19:59:07,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:59:07" (1/1) ...
[2022-04-06 19:59:07,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bce7b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:59:07, skipping insertion in model container
[2022-04-06 19:59:07,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:59:07" (1/1) ...
[2022-04-06 19:59:07,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-04-06 19:59:07,719 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-04-06 19:59:07,851 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-invgen/apache-get-tag.i[893,906]
[2022-04-06 19:59:07,863 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-06 19:59:07,868 INFO L203 MainTranslator]: Completed pre-run
[2022-04-06 19:59:07,877 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-invgen/apache-get-tag.i[893,906]
[2022-04-06 19:59:07,883 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-06 19:59:07,891 INFO L208 MainTranslator]: Completed translation
[2022-04-06 19:59:07,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:59:07 WrapperNode
[2022-04-06 19:59:07,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-04-06 19:59:07,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-04-06 19:59:07,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-04-06 19:59:07,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-04-06 19:59:07,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:59:07" (1/1) ...
[2022-04-06 19:59:07,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:59:07" (1/1) ...
[2022-04-06 19:59:07,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:59:07" (1/1) ...
[2022-04-06 19:59:07,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:59:07" (1/1) ...
[2022-04-06 19:59:07,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:59:07" (1/1) ...
[2022-04-06 19:59:07,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:59:07" (1/1) ...
[2022-04-06 19:59:07,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:59:07" (1/1) ...
[2022-04-06 19:59:07,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-04-06 19:59:07,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-04-06 19:59:07,917 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-04-06 19:59:07,917 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-04-06 19:59:07,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:59:07" (1/1) ...
[2022-04-06 19:59:07,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-06 19:59:07,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 19:59:07,955 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)
[2022-04-06 19:59:07,956 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
[2022-04-06 19:59:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-04-06 19:59:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-04-06 19:59:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-04-06 19:59:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-04-06 19:59:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-04-06 19:59:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-04-06 19:59:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-04-06 19:59:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-04-06 19:59:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2022-04-06 19:59:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2022-04-06 19:59:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-04-06 19:59:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-04-06 19:59:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-04-06 19:59:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-04-06 19:59:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-04-06 19:59:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-04-06 19:59:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-04-06 19:59:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-04-06 19:59:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-04-06 19:59:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-04-06 19:59:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-04-06 19:59:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-04-06 19:59:08,033 INFO L234 CfgBuilder]: Building ICFG
[2022-04-06 19:59:08,034 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-04-06 19:59:08,144 INFO L275 CfgBuilder]: Performing block encoding
[2022-04-06 19:59:08,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-04-06 19:59:08,149 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2022-04-06 19:59:08,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:59:08 BoogieIcfgContainer
[2022-04-06 19:59:08,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-04-06 19:59:08,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-04-06 19:59:08,152 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-04-06 19:59:08,155 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-04-06 19:59:08,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 07:59:07" (1/3) ...
[2022-04-06 19:59:08,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfddd47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:59:08, skipping insertion in model container
[2022-04-06 19:59:08,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:59:07" (2/3) ...
[2022-04-06 19:59:08,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfddd47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:59:08, skipping insertion in model container
[2022-04-06 19:59:08,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:59:08" (3/3) ...
[2022-04-06 19:59:08,157 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i
[2022-04-06 19:59:08,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-04-06 19:59:08,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-04-06 19:59:08,194 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-06 19:59:08,214 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, 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
[2022-04-06 19:59:08,214 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-04-06 19:59:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 25 states have (on average 1.56) internal successors, (39), 30 states have internal predecessors, (39), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18)
[2022-04-06 19:59:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-04-06 19:59:08,231 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 19:59:08,232 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 19:59:08,232 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 19:59:08,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 19:59:08,236 INFO L85 PathProgramCache]: Analyzing trace with hash 343233864, now seen corresponding path program 1 times
[2022-04-06 19:59:08,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:08,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [587709931]
[2022-04-06 19:59:08,258 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-04-06 19:59:08,258 INFO L85 PathProgramCache]: Analyzing trace with hash 343233864, now seen corresponding path program 2 times
[2022-04-06 19:59:08,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 19:59:08,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372616424]
[2022-04-06 19:59:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 19:59:08,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 19:59:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-06 19:59:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 19:59:08,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 19:59:08,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372616424]
[2022-04-06 19:59:08,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372616424] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:08,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 19:59:08,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-04-06 19:59:08,392 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace
[2022-04-06 19:59:08,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [587709931]
[2022-04-06 19:59:08,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [587709931] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:08,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 19:59:08,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-04-06 19:59:08,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091947613]
[2022-04-06 19:59:08,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 19:59:08,397 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-06 19:59:08,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:08,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-06 19:59:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-06 19:59:08,432 INFO L87 Difference]: Start difference. First operand has 48 states, 25 states have (on average 1.56) internal successors, (39), 30 states have internal predecessors, (39), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-04-06 19:59:08,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 19:59:08,588 INFO L93 Difference]: Finished difference Result 88 states and 157 transitions.
[2022-04-06 19:59:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-04-06 19:59:08,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2022-04-06 19:59:08,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 19:59:08,604 INFO L225 Difference]: With dead ends: 88
[2022-04-06 19:59:08,604 INFO L226 Difference]: Without dead ends: 43
[2022-04-06 19:59:08,607 INFO L912 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
[2022-04-06 19:59:08,610 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 31 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-04-06 19:59:08,611 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 57 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-04-06 19:59:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2022-04-06 19:59:08,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2022-04-06 19:59:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 18 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-04-06 19:59:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 61 transitions.
[2022-04-06 19:59:08,671 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 61 transitions. Word has length 13
[2022-04-06 19:59:08,671 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 19:59:08,671 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 61 transitions.
[2022-04-06 19:59:08,672 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-04-06 19:59:08,672 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions.
[2022-04-06 19:59:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-04-06 19:59:08,673 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 19:59:08,673 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 19:59:08,673 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-04-06 19:59:08,673 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 19:59:08,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 19:59:08,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1474362961, now seen corresponding path program 1 times
[2022-04-06 19:59:08,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:08,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1726910363]
[2022-04-06 19:59:08,682 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-04-06 19:59:08,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1474362961, now seen corresponding path program 2 times
[2022-04-06 19:59:08,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 19:59:08,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393317552]
[2022-04-06 19:59:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 19:59:08,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 19:59:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:08,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-06 19:59:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 19:59:08,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 19:59:08,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393317552]
[2022-04-06 19:59:08,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393317552] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:08,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 19:59:08,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-04-06 19:59:08,831 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace
[2022-04-06 19:59:08,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1726910363]
[2022-04-06 19:59:08,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1726910363] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:08,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 19:59:08,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-04-06 19:59:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712588210]
[2022-04-06 19:59:08,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 19:59:08,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-04-06 19:59:08,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-04-06 19:59:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-04-06 19:59:08,834 INFO L87 Difference]: Start difference. First operand 43 states and 61 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-04-06 19:59:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 19:59:09,062 INFO L93 Difference]: Finished difference Result 49 states and 66 transitions.
[2022-04-06 19:59:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-04-06 19:59:09,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2022-04-06 19:59:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 19:59:09,066 INFO L225 Difference]: With dead ends: 49
[2022-04-06 19:59:09,067 INFO L226 Difference]: Without dead ends: 47
[2022-04-06 19:59:09,069 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-04-06 19:59:09,072 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 47 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-04-06 19:59:09,077 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 54 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-04-06 19:59:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2022-04-06 19:59:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2022-04-06 19:59:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.32) internal successors, (33), 29 states have internal predecessors, (33), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-04-06 19:59:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions.
[2022-04-06 19:59:09,100 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 14
[2022-04-06 19:59:09,100 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 19:59:09,100 INFO L478 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions.
[2022-04-06 19:59:09,100 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-04-06 19:59:09,100 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions.
[2022-04-06 19:59:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-04-06 19:59:09,101 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 19:59:09,101 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 19:59:09,101 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-04-06 19:59:09,102 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 19:59:09,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 19:59:09,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1520724128, now seen corresponding path program 1 times
[2022-04-06 19:59:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:09,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [62615752]
[2022-04-06 19:59:09,104 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-04-06 19:59:09,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1520724128, now seen corresponding path program 2 times
[2022-04-06 19:59:09,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 19:59:09,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316202989]
[2022-04-06 19:59:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 19:59:09,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 19:59:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:09,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-06 19:59:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2022-04-06 19:59:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:09,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 19:59:09,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 19:59:09,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316202989]
[2022-04-06 19:59:09,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316202989] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:09,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 19:59:09,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-04-06 19:59:09,234 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace
[2022-04-06 19:59:09,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [62615752]
[2022-04-06 19:59:09,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [62615752] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:09,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 19:59:09,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-04-06 19:59:09,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452661444]
[2022-04-06 19:59:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 19:59:09,235 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-04-06 19:59:09,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:09,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-04-06 19:59:09,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2022-04-06 19:59:09,236 INFO L87 Difference]: Start difference. First operand 47 states and 64 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-04-06 19:59:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 19:59:09,460 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions.
[2022-04-06 19:59:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-04-06 19:59:09,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19
[2022-04-06 19:59:09,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 19:59:09,462 INFO L225 Difference]: With dead ends: 62
[2022-04-06 19:59:09,462 INFO L226 Difference]: Without dead ends: 50
[2022-04-06 19:59:09,463 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2022-04-06 19:59:09,466 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 41 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-04-06 19:59:09,469 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 68 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-04-06 19:59:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-04-06 19:59:09,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41.
[2022-04-06 19:59:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-04-06 19:59:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions.
[2022-04-06 19:59:09,489 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 19
[2022-04-06 19:59:09,490 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 19:59:09,490 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions.
[2022-04-06 19:59:09,491 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-04-06 19:59:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions.
[2022-04-06 19:59:09,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2022-04-06 19:59:09,491 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 19:59:09,491 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 19:59:09,492 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-04-06 19:59:09,492 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 19:59:09,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 19:59:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1868871511, now seen corresponding path program 1 times
[2022-04-06 19:59:09,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:09,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1743556773]
[2022-04-06 19:59:09,493 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-04-06 19:59:09,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1868871511, now seen corresponding path program 2 times
[2022-04-06 19:59:09,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 19:59:09,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675347702]
[2022-04-06 19:59:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 19:59:09,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 19:59:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:09,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-06 19:59:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2022-04-06 19:59:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-06 19:59:09,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 19:59:09,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675347702]
[2022-04-06 19:59:09,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675347702] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:09,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 19:59:09,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-04-06 19:59:09,634 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace
[2022-04-06 19:59:09,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1743556773]
[2022-04-06 19:59:09,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1743556773] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:09,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 19:59:09,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-04-06 19:59:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720624902]
[2022-04-06 19:59:09,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 19:59:09,635 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-04-06 19:59:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-04-06 19:59:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2022-04-06 19:59:09,636 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-04-06 19:59:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 19:59:09,830 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions.
[2022-04-06 19:59:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-04-06 19:59:09,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20
[2022-04-06 19:59:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 19:59:09,836 INFO L225 Difference]: With dead ends: 60
[2022-04-06 19:59:09,836 INFO L226 Difference]: Without dead ends: 58
[2022-04-06 19:59:09,837 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2022-04-06 19:59:09,837 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 57 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-04-06 19:59:09,838 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 55 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-04-06 19:59:09,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2022-04-06 19:59:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56.
[2022-04-06 19:59:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 37 states have internal predecessors, (40), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14)
[2022-04-06 19:59:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions.
[2022-04-06 19:59:09,849 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 20
[2022-04-06 19:59:09,849 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 19:59:09,849 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions.
[2022-04-06 19:59:09,849 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-04-06 19:59:09,850 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions.
[2022-04-06 19:59:09,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-04-06 19:59:09,851 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 19:59:09,851 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 19:59:09,851 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-04-06 19:59:09,851 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 19:59:09,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 19:59:09,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1843501053, now seen corresponding path program 1 times
[2022-04-06 19:59:09,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:09,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1182817187]
[2022-04-06 19:59:09,867 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays.
[2022-04-06 19:59:09,867 INFO L274 tedInterpolationCore]: Could not compute an accelerate.
[2022-04-06 19:59:09,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1843501053, now seen corresponding path program 2 times
[2022-04-06 19:59:09,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 19:59:09,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184836378]
[2022-04-06 19:59:09,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 19:59:09,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 19:59:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:09,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-06 19:59:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:09,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2022-04-06 19:59:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:09,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2022-04-06 19:59:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:09,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-04-06 19:59:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-04-06 19:59:09,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 19:59:09,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184836378]
[2022-04-06 19:59:09,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184836378] provided 0 perfect and 1 imperfect interpolant sequences
[2022-04-06 19:59:09,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663530621]
[2022-04-06 19:59:09,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-04-06 19:59:09,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 19:59:09,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 19:59:09,994 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)
[2022-04-06 19:59:10,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-04-06 19:59:10,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-04-06 19:59:10,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-04-06 19:59:10,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-04-06 19:59:10,055 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 19:59:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-04-06 19:59:10,336 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-04-06 19:59:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2022-04-06 19:59:10,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663530621] provided 0 perfect and 2 imperfect interpolant sequences
[2022-04-06 19:59:10,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-04-06 19:59:10,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 16
[2022-04-06 19:59:10,458 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace
[2022-04-06 19:59:10,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1182817187]
[2022-04-06 19:59:10,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1182817187] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:10,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 19:59:10,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-04-06 19:59:10,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709197281]
[2022-04-06 19:59:10,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 19:59:10,460 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-04-06 19:59:10,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:10,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-04-06 19:59:10,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240
[2022-04-06 19:59:10,461 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2022-04-06 19:59:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 19:59:10,780 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions.
[2022-04-06 19:59:10,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-04-06 19:59:10,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34
[2022-04-06 19:59:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 19:59:10,784 INFO L225 Difference]: With dead ends: 86
[2022-04-06 19:59:10,784 INFO L226 Difference]: Without dead ends: 82
[2022-04-06 19:59:10,787 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506
[2022-04-06 19:59:10,787 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 93 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-04-06 19:59:10,787 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 53 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-04-06 19:59:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2022-04-06 19:59:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78.
[2022-04-06 19:59:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 52 states have internal predecessors, (56), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 18 states have call predecessors, (22), 22 states have call successors, (22)
[2022-04-06 19:59:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions.
[2022-04-06 19:59:10,822 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 34
[2022-04-06 19:59:10,822 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 19:59:10,822 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions.
[2022-04-06 19:59:10,822 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2022-04-06 19:59:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions.
[2022-04-06 19:59:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2022-04-06 19:59:10,829 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 19:59:10,830 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 19:59:10,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-04-06 19:59:11,043 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 19:59:11,044 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 19:59:11,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 19:59:11,044 INFO L85 PathProgramCache]: Analyzing trace with hash 110874648, now seen corresponding path program 1 times
[2022-04-06 19:59:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:11,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [884815151]
[2022-04-06 19:59:11,045 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-04-06 19:59:11,045 INFO L85 PathProgramCache]: Analyzing trace with hash 110874648, now seen corresponding path program 2 times
[2022-04-06 19:59:11,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 19:59:11,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515268225]
[2022-04-06 19:59:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 19:59:11,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 19:59:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:11,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-06 19:59:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:11,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2022-04-06 19:59:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2022-04-06 19:59:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:11,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26
[2022-04-06 19:59:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:11,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2022-04-06 19:59:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:11,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2022-04-06 19:59:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2022-04-06 19:59:11,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 19:59:11,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515268225]
[2022-04-06 19:59:11,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515268225] provided 0 perfect and 1 imperfect interpolant sequences
[2022-04-06 19:59:11,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448771312]
[2022-04-06 19:59:11,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-04-06 19:59:11,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 19:59:11,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 19:59:11,187 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)
[2022-04-06 19:59:11,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-04-06 19:59:11,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-04-06 19:59:11,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-04-06 19:59:11,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-04-06 19:59:11,246 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 19:59:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2022-04-06 19:59:11,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-04-06 19:59:11,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448771312] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:11,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-04-06 19:59:11,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17
[2022-04-06 19:59:11,551 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace
[2022-04-06 19:59:11,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [884815151]
[2022-04-06 19:59:11,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [884815151] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:11,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 19:59:11,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-04-06 19:59:11,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297018805]
[2022-04-06 19:59:11,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 19:59:11,552 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-04-06 19:59:11,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:11,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-04-06 19:59:11,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272
[2022-04-06 19:59:11,553 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2022-04-06 19:59:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 19:59:11,715 INFO L93 Difference]: Finished difference Result 111 states and 147 transitions.
[2022-04-06 19:59:11,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-04-06 19:59:11,716 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 47
[2022-04-06 19:59:11,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 19:59:11,717 INFO L225 Difference]: With dead ends: 111
[2022-04-06 19:59:11,717 INFO L226 Difference]: Without dead ends: 107
[2022-04-06 19:59:11,717 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306
[2022-04-06 19:59:11,718 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 40 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-04-06 19:59:11,718 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 264 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-04-06 19:59:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2022-04-06 19:59:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103.
[2022-04-06 19:59:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 68 states have internal predecessors, (75), 32 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (30), 26 states have call predecessors, (30), 30 states have call successors, (30)
[2022-04-06 19:59:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 137 transitions.
[2022-04-06 19:59:11,748 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 137 transitions. Word has length 47
[2022-04-06 19:59:11,749 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 19:59:11,749 INFO L478 AbstractCegarLoop]: Abstraction has 103 states and 137 transitions.
[2022-04-06 19:59:11,750 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)
[2022-04-06 19:59:11,750 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 137 transitions.
[2022-04-06 19:59:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2022-04-06 19:59:11,752 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-06 19:59:11,753 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-06 19:59:11,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-04-06 19:59:11,975 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2022-04-06 19:59:11,975 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-06 19:59:11,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-06 19:59:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash -392317006, now seen corresponding path program 1 times
[2022-04-06 19:59:11,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:11,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1290358455]
[2022-04-06 19:59:11,979 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays.
[2022-04-06 19:59:11,979 INFO L274 tedInterpolationCore]: Could not compute an accelerate.
[2022-04-06 19:59:11,979 INFO L85 PathProgramCache]: Analyzing trace with hash -392317006, now seen corresponding path program 2 times
[2022-04-06 19:59:11,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-06 19:59:11,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027857324]
[2022-04-06 19:59:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-06 19:59:11,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-06 19:59:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-06 19:59:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2022-04-06 19:59:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:12,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16
[2022-04-06 19:59:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:12,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-04-06 19:59:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:12,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2022-04-06 19:59:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:12,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2022-04-06 19:59:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:12,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2022-04-06 19:59:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:12,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2022-04-06 19:59:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-06 19:59:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked.
[2022-04-06 19:59:12,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-06 19:59:12,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027857324]
[2022-04-06 19:59:12,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027857324] provided 0 perfect and 1 imperfect interpolant sequences
[2022-04-06 19:59:12,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472301615]
[2022-04-06 19:59:12,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-04-06 19:59:12,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 19:59:12,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-06 19:59:12,090 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)
[2022-04-06 19:59:12,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-04-06 19:59:12,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-04-06 19:59:12,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-04-06 19:59:12,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-04-06 19:59:12,152 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-06 19:59:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2022-04-06 19:59:12,292 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-04-06 19:59:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2022-04-06 19:59:12,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472301615] provided 0 perfect and 2 imperfect interpolant sequences
[2022-04-06 19:59:12,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-04-06 19:59:12,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12
[2022-04-06 19:59:12,439 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace
[2022-04-06 19:59:12,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1290358455]
[2022-04-06 19:59:12,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1290358455] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-06 19:59:12,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-06 19:59:12,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-04-06 19:59:12,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27535900]
[2022-04-06 19:59:12,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-06 19:59:12,440 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-04-06 19:59:12,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION
[2022-04-06 19:59:12,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-04-06 19:59:12,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2022-04-06 19:59:12,441 INFO L87 Difference]: Start difference. First operand 103 states and 137 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2022-04-06 19:59:12,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-06 19:59:12,680 INFO L93 Difference]: Finished difference Result 103 states and 137 transitions.
[2022-04-06 19:59:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-04-06 19:59:12,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61
[2022-04-06 19:59:12,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-06 19:59:12,681 INFO L225 Difference]: With dead ends: 103
[2022-04-06 19:59:12,681 INFO L226 Difference]: Without dead ends: 0
[2022-04-06 19:59:12,682 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 134 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306
[2022-04-06 19:59:12,682 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 36 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-04-06 19:59:12,683 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 70 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-04-06 19:59:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-04-06 19:59:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-04-06 19:59:12,683 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)
[2022-04-06 19:59:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-04-06 19:59:12,684 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61
[2022-04-06 19:59:12,684 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-06 19:59:12,684 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-04-06 19:59:12,684 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)
[2022-04-06 19:59:12,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-04-06 19:59:12,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-04-06 19:59:12,686 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-04-06 19:59:12,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-04-06 19:59:12,907 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-06 19:59:12,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2022-04-06 19:59:13,554 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed.
[2022-04-06 19:59:13,554 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed.
[2022-04-06 19:59:13,554 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed.
[2022-04-06 19:59:13,554 INFO L882 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed.
[2022-04-06 19:59:13,554 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed.
[2022-04-06 19:59:13,554 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed.
[2022-04-06 19:59:13,554 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed.
[2022-04-06 19:59:13,555 INFO L878 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0))
[2022-04-06 19:59:13,555 INFO L878 garLoopResultBuilder]: At program point L60-1(line 60) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0))
[2022-04-06 19:59:13,555 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 24 77) the Hoare annotation is: true
[2022-04-06 19:59:13,555 INFO L878 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,555 INFO L878 garLoopResultBuilder]: At program point L56-1(line 56) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,555 INFO L878 garLoopResultBuilder]: At program point L48-2(lines 48 72) the Hoare annotation is: (and (< main_~t~0 (+ main_~tagbuf_len~0 1)) (<= 1 main_~tagbuf_len~0) (<= 0 main_~t~0))
[2022-04-06 19:59:13,555 INFO L878 garLoopResultBuilder]: At program point L48-3(lines 48 72) the Hoare annotation is: (let ((.cse0 (<= 0 main_~t~0))) (or (and (< main_~t~0 (+ main_~tagbuf_len~0 1)) (<= 1 main_~tagbuf_len~0) (<= main_~t~0 2) .cse0) (and (not (<= main_~tagbuf_len~0 main_~t~0)) .cse0)))
[2022-04-06 19:59:13,556 INFO L878 garLoopResultBuilder]: At program point L73(line 73) the Hoare annotation is: (let ((.cse0 (<= 0 main_~t~0))) (or (and (< main_~t~0 (+ main_~tagbuf_len~0 1)) (<= 1 main_~tagbuf_len~0) (<= main_~t~0 2) .cse0) (and (not (<= main_~tagbuf_len~0 main_~t~0)) .cse0)))
[2022-04-06 19:59:13,556 INFO L878 garLoopResultBuilder]: At program point L69(line 69) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,556 INFO L878 garLoopResultBuilder]: At program point L32-2(lines 32 44) the Hoare annotation is: (and (< main_~t~0 (+ main_~tagbuf_len~0 1)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,556 INFO L878 garLoopResultBuilder]: At program point L32-3(lines 32 44) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,556 INFO L878 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,556 INFO L878 garLoopResultBuilder]: At program point L49(lines 49 53) the Hoare annotation is: (and (< main_~t~0 (+ main_~tagbuf_len~0 1)) (<= 1 main_~tagbuf_len~0) (<= 0 main_~t~0))
[2022-04-06 19:59:13,556 INFO L878 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,556 INFO L885 garLoopResultBuilder]: At program point L74(lines 25 77) the Hoare annotation is: true
[2022-04-06 19:59:13,556 INFO L878 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,557 INFO L878 garLoopResultBuilder]: At program point L41-1(line 41) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,557 INFO L878 garLoopResultBuilder]: At program point L70(line 70) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,557 INFO L878 garLoopResultBuilder]: At program point L66(lines 66 68) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,557 INFO L878 garLoopResultBuilder]: At program point L33(lines 33 37) the Hoare annotation is: (and (< main_~t~0 (+ main_~tagbuf_len~0 1)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,557 INFO L885 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true
[2022-04-06 19:59:13,557 INFO L878 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (<= 1 main_~tagbuf_len~0)
[2022-04-06 19:59:13,557 INFO L878 garLoopResultBuilder]: At program point L54(lines 54 68) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,557 INFO L878 garLoopResultBuilder]: At program point L54-1(lines 54 68) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,557 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0))
[2022-04-06 19:59:13,557 INFO L878 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0))
[2022-04-06 19:59:13,557 INFO L878 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,558 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 24 77) the Hoare annotation is: true
[2022-04-06 19:59:13,558 INFO L878 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,558 INFO L878 garLoopResultBuilder]: At program point L38(lines 38 40) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,558 INFO L878 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0))
[2022-04-06 19:59:13,558 INFO L878 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0))
[2022-04-06 19:59:13,558 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 77) the Hoare annotation is: true
[2022-04-06 19:59:13,558 INFO L878 garLoopResultBuilder]: At program point L59(lines 59 63) the Hoare annotation is: (and (< main_~t~0 (+ main_~tagbuf_len~0 1)) (<= 1 main_~tagbuf_len~0) (<= 0 main_~t~0))
[2022-04-06 19:59:13,558 INFO L878 garLoopResultBuilder]: At program point L55(lines 55 64) the Hoare annotation is: (and (not (<= main_~tagbuf_len~0 main_~t~0)) (<= 0 main_~t~0))
[2022-04-06 19:59:13,558 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2022-04-06 19:59:13,558 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))
[2022-04-06 19:59:13,558 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true
[2022-04-06 19:59:13,558 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true
[2022-04-06 19:59:13,559 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true
[2022-04-06 19:59:13,559 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2022-04-06 19:59:13,559 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true
[2022-04-06 19:59:13,559 INFO L878 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0))
[2022-04-06 19:59:13,559 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true
[2022-04-06 19:59:13,559 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0))
[2022-04-06 19:59:13,559 INFO L878 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0)
[2022-04-06 19:59:13,559 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0)
[2022-04-06 19:59:13,559 INFO L878 garLoopResultBuilder]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| 0))
[2022-04-06 19:59:13,562 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2]
[2022-04-06 19:59:13,563 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-04-06 19:59:13,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 07:59:13 BoogieIcfgContainer
[2022-04-06 19:59:13,575 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-04-06 19:59:13,575 INFO L158 Benchmark]: Toolchain (without parser) took 5881.19ms. Allocated memory was 198.2MB in the beginning and 300.9MB in the end (delta: 102.8MB). Free memory was 144.7MB in the beginning and 223.3MB in the end (delta: -78.5MB). Peak memory consumption was 123.3MB. Max. memory is 8.0GB.
[2022-04-06 19:59:13,575 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 198.2MB. Free memory was 160.8MB in the beginning and 160.6MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB.
[2022-04-06 19:59:13,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.81ms. Allocated memory is still 198.2MB. Free memory was 144.6MB in the beginning and 175.4MB in the end (delta: -30.9MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB.
[2022-04-06 19:59:13,576 INFO L158 Benchmark]: Boogie Preprocessor took 24.26ms. Allocated memory is still 198.2MB. Free memory was 175.4MB in the beginning and 173.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-04-06 19:59:13,576 INFO L158 Benchmark]: RCFGBuilder took 234.00ms. Allocated memory is still 198.2MB. Free memory was 173.8MB in the beginning and 161.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
[2022-04-06 19:59:13,577 INFO L158 Benchmark]: TraceAbstraction took 5422.30ms. Allocated memory was 198.2MB in the beginning and 300.9MB in the end (delta: 102.8MB). Free memory was 160.7MB in the beginning and 223.3MB in the end (delta: -62.5MB). Peak memory consumption was 139.3MB. Max. memory is 8.0GB.
[2022-04-06 19:59:13,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.14ms. Allocated memory is still 198.2MB. Free memory was 160.8MB in the beginning and 160.6MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 193.81ms. Allocated memory is still 198.2MB. Free memory was 144.6MB in the beginning and 175.4MB in the end (delta: -30.9MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 24.26ms. Allocated memory is still 198.2MB. Free memory was 175.4MB in the beginning and 173.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* RCFGBuilder took 234.00ms. Allocated memory is still 198.2MB. Free memory was 173.8MB in the beginning and 161.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
* TraceAbstraction took 5422.30ms. Allocated memory was 198.2MB in the beginning and 300.9MB in the end (delta: 102.8MB). Free memory was 160.7MB in the beginning and 223.3MB in the end (delta: -62.5MB). Peak memory consumption was 139.3MB. 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: 19]: 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 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 7, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 386 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 345 mSDsluCounter, 621 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 329 mSDsCounter, 363 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1372 IncrementalHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 363 mSolverCounterUnsat, 292 mSDtfsCounter, 1372 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 362 GetRequests, 270 SyntacticMatches, 9 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=6, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 48 LocationsWithAnnotation, 378 PreInvPairs, 566 NumberOfFragments, 321 HoareAnnotationTreeSize, 378 FomulaSimplifications, 910 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 48 FomulaSimplificationsInter, 2067 FormulaSimplificationTreeSizeReductionInter, 0.5s 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: 32]: Loop Invariant
Derived loop invariant: t < tagbuf_len + 1 && 0 <= t
- InvariantResult [Line: 25]: Loop Invariant
Derived loop invariant: 1
- InvariantResult [Line: 48]: Loop Invariant
Derived loop invariant: (t < tagbuf_len + 1 && 1 <= tagbuf_len) && 0 <= t
- ProcedureContractResult [Line: 24]: Procedure Contract for main
Derived contract for procedure main: 1
- ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert
Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || \old(cond) == 0
RESULT: Ultimate proved your program to be correct!
[2022-04-06 19:59:13,620 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...