/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/nla-digbench-scaling/hard2_valuebound100.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-6c470ae
[2022-02-15 04:08:51,452 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-02-15 04:08:51,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-15 04:08:51,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-15 04:08:51,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-15 04:08:51,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-15 04:08:51,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-02-15 04:08:51,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-02-15 04:08:51,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-02-15 04:08:51,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-02-15 04:08:51,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-02-15 04:08:51,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-02-15 04:08:51,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-15 04:08:51,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-15 04:08:51,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-15 04:08:51,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-15 04:08:51,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-15 04:08:51,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-15 04:08:51,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-15 04:08:51,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-15 04:08:51,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-15 04:08:51,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-15 04:08:51,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-02-15 04:08:51,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-15 04:08:51,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-02-15 04:08:51,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-02-15 04:08:51,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-02-15 04:08:51,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-02-15 04:08:51,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-02-15 04:08:51,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-02-15 04:08:51,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-02-15 04:08:51,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-02-15 04:08:51,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-02-15 04:08:51,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-02-15 04:08:51,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-02-15 04:08:51,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-02-15 04:08:51,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2022-02-15 04:08:51,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-02-15 04:08:51,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-02-15 04:08:51,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf
[2022-02-15 04:08:51,560 INFO L113 SettingsManager]: Loading preferences was successful
[2022-02-15 04:08:51,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-15 04:08:51,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-15 04:08:51,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-15 04:08:51,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-15 04:08:51,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-15 04:08:51,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-15 04:08:51,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-15 04:08:51,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-15 04:08:51,562 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-15 04:08:51,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-15 04:08:51,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-15 04:08:51,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-15 04:08:51,563 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-15 04:08:51,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-15 04:08:51,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-15 04:08:51,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-15 04:08:51,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-02-15 04:08:51,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-15 04:08:51,564 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR
[2022-02-15 04:08:51,564 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-15 04:08:51,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-15 04:08:51,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-15 04:08:51,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-15 04:08:51,810 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-02-15 04:08:51,811 INFO L275 PluginConnector]: CDTParser initialized
[2022-02-15 04:08:51,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c
[2022-02-15 04:08:51,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455b80e86/5efcfe6dd9164f1eb9b4c88ef81a97a9/FLAG0ec9782f3
[2022-02-15 04:08:52,224 INFO L306 CDTParser]: Found 1 translation units.
[2022-02-15 04:08:52,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c
[2022-02-15 04:08:52,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455b80e86/5efcfe6dd9164f1eb9b4c88ef81a97a9/FLAG0ec9782f3
[2022-02-15 04:08:52,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455b80e86/5efcfe6dd9164f1eb9b4c88ef81a97a9
[2022-02-15 04:08:52,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-15 04:08:52,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-15 04:08:52,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-15 04:08:52,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-15 04:08:52,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-15 04:08:52,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:08:52" (1/1) ...
[2022-02-15 04:08:52,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf90b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:08:52, skipping insertion in model container
[2022-02-15 04:08:52,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 04:08:52" (1/1) ...
[2022-02-15 04:08:52,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-02-15 04:08:52,680 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-02-15 04:08:52,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c[526,539]
[2022-02-15 04:08:52,856 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-15 04:08:52,865 INFO L203 MainTranslator]: Completed pre-run
[2022-02-15 04:08:52,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_valuebound100.c[526,539]
[2022-02-15 04:08:52,903 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-15 04:08:52,916 INFO L208 MainTranslator]: Completed translation
[2022-02-15 04:08:52,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:08:52 WrapperNode
[2022-02-15 04:08:52,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-15 04:08:52,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-15 04:08:52,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-15 04:08:52,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-15 04:08:52,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:08:52" (1/1) ...
[2022-02-15 04:08:52,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:08:52" (1/1) ...
[2022-02-15 04:08:52,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:08:52" (1/1) ...
[2022-02-15 04:08:52,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:08:52" (1/1) ...
[2022-02-15 04:08:52,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:08:52" (1/1) ...
[2022-02-15 04:08:52,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:08:52" (1/1) ...
[2022-02-15 04:08:52,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:08:52" (1/1) ...
[2022-02-15 04:08:52,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-15 04:08:52,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-15 04:08:52,960 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-15 04:08:52,960 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-15 04:08:52,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:08:52" (1/1) ...
[2022-02-15 04:08:52,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-15 04:08:52,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-15 04:08:52,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-02-15 04:08:53,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-02-15 04:08:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-15 04:08:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-15 04:08:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-15 04:08:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-02-15 04:08:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-02-15 04:08:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-02-15 04:08:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-02-15 04:08:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-15 04:08:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-15 04:08:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-15 04:08:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-02-15 04:08:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-02-15 04:08:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-02-15 04:08:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-02-15 04:08:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-15 04:08:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-15 04:08:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-15 04:08:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-02-15 04:08:53,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-02-15 04:08:53,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-15 04:08:53,107 INFO L234 CfgBuilder]: Building ICFG
[2022-02-15 04:08:53,109 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-15 04:08:53,228 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-15 04:08:53,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-15 04:08:53,238 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2022-02-15 04:08:53,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:08:53 BoogieIcfgContainer
[2022-02-15 04:08:53,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-15 04:08:53,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-15 04:08:53,262 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-15 04:08:53,265 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-15 04:08:53,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 04:08:52" (1/3) ...
[2022-02-15 04:08:53,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d144ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:08:53, skipping insertion in model container
[2022-02-15 04:08:53,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 04:08:52" (2/3) ...
[2022-02-15 04:08:53,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d144ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 04:08:53, skipping insertion in model container
[2022-02-15 04:08:53,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 04:08:53" (3/3) ...
[2022-02-15 04:08:53,268 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound100.c
[2022-02-15 04:08:53,272 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-02-15 04:08:53,272 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-15 04:08:53,317 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-15 04:08:53,327 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=QVASR
[2022-02-15 04:08:53,327 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-15 04:08:53,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-02-15 04:08:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-02-15 04:08:53,360 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-15 04:08:53,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-15 04:08:53,361 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-15 04:08:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-15 04:08:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -977830905, now seen corresponding path program 1 times
[2022-02-15 04:08:53,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-15 04:08:53,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132642075]
[2022-02-15 04:08:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-15 04:08:53,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-15 04:08:53,436 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-15 04:08:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 04:08:53,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-15 04:08:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 04:08:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-15 04:08:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 04:08:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-15 04:08:53,588 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-15 04:08:53,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132642075]
[2022-02-15 04:08:53,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [132642075] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-15 04:08:53,590 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-15 04:08:53,590 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-15 04:08:53,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300916228]
[2022-02-15 04:08:53,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-15 04:08:53,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-15 04:08:53,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-15 04:08:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-15 04:08:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-15 04:08:53,619 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-15 04:08:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-15 04:08:53,712 INFO L93 Difference]: Finished difference Result 61 states and 95 transitions.
[2022-02-15 04:08:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-02-15 04:08:53,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17
[2022-02-15 04:08:53,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-15 04:08:53,720 INFO L225 Difference]: With dead ends: 61
[2022-02-15 04:08:53,720 INFO L226 Difference]: Without dead ends: 30
[2022-02-15 04:08:53,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-15 04:08:53,727 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-15 04:08:53,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-15 04:08:53,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2022-02-15 04:08:53,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2022-02-15 04:08:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-02-15 04:08:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions.
[2022-02-15 04:08:53,763 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17
[2022-02-15 04:08:53,763 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-15 04:08:53,763 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions.
[2022-02-15 04:08:53,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-15 04:08:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions.
[2022-02-15 04:08:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-02-15 04:08:53,764 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-15 04:08:53,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-15 04:08:53,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-15 04:08:53,765 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-15 04:08:53,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-15 04:08:53,766 INFO L85 PathProgramCache]: Analyzing trace with hash -297772535, now seen corresponding path program 1 times
[2022-02-15 04:08:53,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-15 04:08:53,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444949386]
[2022-02-15 04:08:53,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-15 04:08:53,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-15 04:08:53,771 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-15 04:08:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 04:08:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-15 04:08:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 04:08:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-15 04:08:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 04:08:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-15 04:08:53,900 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-15 04:08:53,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444949386]
[2022-02-15 04:08:53,901 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [444949386] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-15 04:08:53,901 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-15 04:08:53,901 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-02-15 04:08:53,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537645333]
[2022-02-15 04:08:53,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-15 04:08:53,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-02-15 04:08:53,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-15 04:08:53,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-02-15 04:08:53,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-02-15 04:08:53,904 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-15 04:08:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-15 04:08:54,098 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions.
[2022-02-15 04:08:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-02-15 04:08:54,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17
[2022-02-15 04:08:54,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-15 04:08:54,100 INFO L225 Difference]: With dead ends: 43
[2022-02-15 04:08:54,100 INFO L226 Difference]: Without dead ends: 41
[2022-02-15 04:08:54,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-02-15 04:08:54,102 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 37 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-15 04:08:54,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 45 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-15 04:08:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2022-02-15 04:08:54,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34.
[2022-02-15 04:08:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-02-15 04:08:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions.
[2022-02-15 04:08:54,113 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 17
[2022-02-15 04:08:54,113 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-15 04:08:54,113 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions.
[2022-02-15 04:08:54,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-15 04:08:54,114 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions.
[2022-02-15 04:08:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-02-15 04:08:54,114 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-15 04:08:54,114 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-15 04:08:54,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-15 04:08:54,115 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-15 04:08:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-15 04:08:54,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1294462534, now seen corresponding path program 1 times
[2022-02-15 04:08:54,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-15 04:08:54,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662408045]
[2022-02-15 04:08:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-15 04:08:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-15 04:08:54,118 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-15 04:08:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 04:08:54,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-15 04:08:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 04:08:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-15 04:08:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 04:08:54,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2022-02-15 04:08:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 04:08:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-15 04:08:54,211 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-15 04:08:54,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662408045]
[2022-02-15 04:08:54,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1662408045] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-15 04:08:54,212 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-15 04:08:54,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-02-15 04:08:54,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874810491]
[2022-02-15 04:08:54,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-15 04:08:54,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-02-15 04:08:54,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-15 04:08:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-02-15 04:08:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-02-15 04:08:54,215 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-15 04:08:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-15 04:08:54,359 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions.
[2022-02-15 04:08:54,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-02-15 04:08:54,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22
[2022-02-15 04:08:54,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-15 04:08:54,360 INFO L225 Difference]: With dead ends: 47
[2022-02-15 04:08:54,360 INFO L226 Difference]: Without dead ends: 45
[2022-02-15 04:08:54,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-02-15 04:08:54,362 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-15 04:08:54,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 45 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-15 04:08:54,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2022-02-15 04:08:54,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38.
[2022-02-15 04:08:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-02-15 04:08:54,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions.
[2022-02-15 04:08:54,371 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 22
[2022-02-15 04:08:54,371 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-15 04:08:54,371 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions.
[2022-02-15 04:08:54,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-15 04:08:54,372 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions.
[2022-02-15 04:08:54,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-02-15 04:08:54,372 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-15 04:08:54,373 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-15 04:08:54,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-02-15 04:08:54,373 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-15 04:08:54,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-15 04:08:54,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1449027479, now seen corresponding path program 1 times
[2022-02-15 04:08:54,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-15 04:08:54,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426490480]
[2022-02-15 04:08:54,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-15 04:08:54,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-15 04:08:54,376 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-15 04:08:54,385 WARN L132 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2022-02-15 04:08:54,386 INFO L628 BasicCegarLoop]: Counterexample might be feasible
[2022-02-15 04:08:54,392 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-02-15 04:08:54,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-02-15 04:08:54,396 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2022-02-15 04:08:54,398 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-15 04:08:54,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 04:08:54 BoogieIcfgContainer
[2022-02-15 04:08:54,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-15 04:08:54,409 INFO L158 Benchmark]: Toolchain (without parser) took 1763.19ms. Allocated memory was 192.9MB in the beginning and 318.8MB in the end (delta: 125.8MB). Free memory was 138.9MB in the beginning and 216.3MB in the end (delta: -77.3MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB.
[2022-02-15 04:08:54,409 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 155.5MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-15 04:08:54,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.33ms. Allocated memory was 192.9MB in the beginning and 318.8MB in the end (delta: 125.8MB). Free memory was 138.7MB in the beginning and 290.2MB in the end (delta: -151.4MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB.
[2022-02-15 04:08:54,410 INFO L158 Benchmark]: Boogie Preprocessor took 40.69ms. Allocated memory is still 318.8MB. Free memory was 290.2MB in the beginning and 289.1MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-15 04:08:54,410 INFO L158 Benchmark]: RCFGBuilder took 280.80ms. Allocated memory is still 318.8MB. Free memory was 288.6MB in the beginning and 277.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
[2022-02-15 04:08:54,410 INFO L158 Benchmark]: TraceAbstraction took 1146.52ms. Allocated memory is still 318.8MB. Free memory was 277.1MB in the beginning and 216.3MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB.
[2022-02-15 04:08:54,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 155.5MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 266.33ms. Allocated memory was 192.9MB in the beginning and 318.8MB in the end (delta: 125.8MB). Free memory was 138.7MB in the beginning and 290.2MB in the end (delta: -151.4MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 40.69ms. Allocated memory is still 318.8MB. Free memory was 290.2MB in the beginning and 289.1MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 280.80ms. Allocated memory is still 318.8MB. Free memory was 288.6MB in the beginning and 277.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
* TraceAbstraction took 1146.52ms. Allocated memory is still 318.8MB. Free memory was 277.1MB in the beginning and 216.3MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. 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
- UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L23] int A, B;
[L24] int r, d, p, q;
[L25] A = __VERIFIER_nondet_int()
[L26] CALL assume_abort_if_not(A>=0 && A<=100)
[L12] COND FALSE !(!cond)
[L26] RET assume_abort_if_not(A>=0 && A<=100)
[L27] B = 1
[L29] r = A
[L30] d = B
[L31] p = 1
[L32] q = 0
[L34] COND TRUE 1
[L35] CALL __VERIFIER_assert(q == 0)
[L15] COND FALSE !(!(cond))
[L35] RET __VERIFIER_assert(q == 0)
[L36] CALL __VERIFIER_assert(r == A)
[L15] COND FALSE !(!(cond))
[L36] RET __VERIFIER_assert(r == A)
[L37] CALL __VERIFIER_assert(d == B * p)
[L15] COND TRUE !(cond)
[L17] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 105 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 89 mSDsluCounter, 128 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 234 IncrementalHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 91 mSDtfsCounter, 234 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2022-02-15 04:08:54,456 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...