/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound10.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.2-dev-6c470ae
[2022-02-15 02:27:09,136 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-02-15 02:27:09,137 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-15 02:27:09,183 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-15 02:27:09,183 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-15 02:27:09,184 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-15 02:27:09,185 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-02-15 02:27:09,186 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-02-15 02:27:09,205 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-02-15 02:27:09,209 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-02-15 02:27:09,211 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-02-15 02:27:09,211 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-15 02:27:09,213 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-15 02:27:09,213 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-15 02:27:09,215 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-15 02:27:09,215 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-15 02:27:09,216 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-15 02:27:09,220 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-15 02:27:09,224 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-15 02:27:09,224 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-15 02:27:09,226 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-15 02:27:09,226 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-02-15 02:27:09,227 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-15 02:27:09,228 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-02-15 02:27:09,228 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-02-15 02:27:09,228 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-02-15 02:27:09,229 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-02-15 02:27:09,229 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-02-15 02:27:09,230 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-02-15 02:27:09,230 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-02-15 02:27:09,230 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-02-15 02:27:09,231 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-02-15 02:27:09,231 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-02-15 02:27:09,231 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-02-15 02:27:09,232 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-02-15 02:27:09,232 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2022-02-15 02:27:09,232 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-02-15 02:27:09,233 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-02-15 02:27:09,234 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf
[2022-02-15 02:27:09,239 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-02-15 02:27:09,239 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-15 02:27:09,240 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-15 02:27:09,240 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-02-15 02:27:09,241 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-02-15 02:27:09,241 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-02-15 02:27:09,241 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-02-15 02:27:09,241 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-02-15 02:27:09,241 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-15 02:27:09,241 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-02-15 02:27:09,241 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-02-15 02:27:09,241 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-02-15 02:27:09,241 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-02-15 02:27:09,241 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-02-15 02:27:09,241 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-15 02:27:09,242 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-02-15 02:27:09,242 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2022-02-15 02:27:09,242 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-02-15 02:27:09,242 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-15 02:27:09,242 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-15 02:27:09,242 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2022-02-15 02:27:09,242 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-15 02:27:09,242 INFO  L138        SettingsManager]:  * Loop acceleration method that is used by accelerated interpolation=JORDAN
[2022-02-15 02:27:09,243 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-15 02:27:09,423 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-15 02:27:09,437 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-15 02:27:09,439 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-15 02:27:09,440 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-02-15 02:27:09,440 INFO  L275        PluginConnector]: CDTParser initialized
[2022-02-15 02:27:09,441 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound10.c
[2022-02-15 02:27:09,520 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c12a89501/e29b975ef58a4a51befaea2e9b15161e/FLAG2cd70f671
[2022-02-15 02:27:09,957 INFO  L306              CDTParser]: Found 1 translation units.
[2022-02-15 02:27:09,958 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/dijkstra-u_valuebound10.c
[2022-02-15 02:27:09,968 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c12a89501/e29b975ef58a4a51befaea2e9b15161e/FLAG2cd70f671
[2022-02-15 02:27:09,981 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c12a89501/e29b975ef58a4a51befaea2e9b15161e
[2022-02-15 02:27:09,983 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-15 02:27:09,985 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-15 02:27:09,988 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-15 02:27:09,988 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-15 02:27:09,990 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-15 02:27:09,991 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:27:09" (1/1) ...
[2022-02-15 02:27:09,992 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22827a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:27:09, skipping insertion in model container
[2022-02-15 02:27:09,992 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:27:09" (1/1) ...
[2022-02-15 02:27:09,996 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-02-15 02:27:10,010 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-02-15 02:27:10,168 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/dijkstra-u_valuebound10.c[525,538]
[2022-02-15 02:27:10,205 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-02-15 02:27:10,210 INFO  L203         MainTranslator]: Completed pre-run
[2022-02-15 02:27:10,220 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/dijkstra-u_valuebound10.c[525,538]
[2022-02-15 02:27:10,240 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-02-15 02:27:10,249 INFO  L208         MainTranslator]: Completed translation
[2022-02-15 02:27:10,249 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:27:10 WrapperNode
[2022-02-15 02:27:10,250 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-15 02:27:10,250 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-15 02:27:10,250 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-15 02:27:10,250 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-02-15 02:27:10,263 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:27:10" (1/1) ...
[2022-02-15 02:27:10,264 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:27:10" (1/1) ...
[2022-02-15 02:27:10,277 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:27:10" (1/1) ...
[2022-02-15 02:27:10,277 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:27:10" (1/1) ...
[2022-02-15 02:27:10,284 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:27:10" (1/1) ...
[2022-02-15 02:27:10,290 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:27:10" (1/1) ...
[2022-02-15 02:27:10,291 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:27:10" (1/1) ...
[2022-02-15 02:27:10,292 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-15 02:27:10,293 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-15 02:27:10,293 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-02-15 02:27:10,293 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-02-15 02:27:10,297 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:27:10" (1/1) ...
[2022-02-15 02:27:10,303 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-15 02:27:10,310 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-15 02:27:10,339 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 02:27:10,348 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 02:27:10,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-15 02:27:10,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-15 02:27:10,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-15 02:27:10,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-02-15 02:27:10,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-02-15 02:27:10,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2022-02-15 02:27:10,373 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2022-02-15 02:27:10,373 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-02-15 02:27:10,374 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-15 02:27:10,418 INFO  L234             CfgBuilder]: Building ICFG
[2022-02-15 02:27:10,419 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-15 02:27:10,561 INFO  L275             CfgBuilder]: Performing block encoding
[2022-02-15 02:27:10,565 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-15 02:27:10,565 INFO  L299             CfgBuilder]: Removed 2 assume(true) statements.
[2022-02-15 02:27:10,567 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:27:10 BoogieIcfgContainer
[2022-02-15 02:27:10,567 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-15 02:27:10,568 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-15 02:27:10,568 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-02-15 02:27:10,570 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-02-15 02:27:10,570 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:27:09" (1/3) ...
[2022-02-15 02:27:10,571 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b71b370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:27:10, skipping insertion in model container
[2022-02-15 02:27:10,571 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:27:10" (2/3) ...
[2022-02-15 02:27:10,571 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b71b370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:27:10, skipping insertion in model container
[2022-02-15 02:27:10,571 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:27:10" (3/3) ...
[2022-02-15 02:27:10,572 INFO  L111   eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound10.c
[2022-02-15 02:27:10,575 INFO  L205   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2022-02-15 02:27:10,575 INFO  L164   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-15 02:27:10,601 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-15 02:27:10,607 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=JORDAN
[2022-02-15 02:27:10,607 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-15 02:27:10,619 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 38 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13)
[2022-02-15 02:27:10,624 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-02-15 02:27:10,624 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-15 02:27:10,625 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-15 02:27:10,625 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-15 02:27:10,628 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-15 02:27:10,628 INFO  L85        PathProgramCache]: Analyzing trace with hash 223850557, now seen corresponding path program 1 times
[2022-02-15 02:27:10,633 INFO  L126   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-15 02:27:10,633 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406886297]
[2022-02-15 02:27:10,634 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-15 02:27:10,642 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-15 02:27:10,671 INFO  L274   tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-15 02:27:10,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:10,763 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-15 02:27:10,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:10,785 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-15 02:27:10,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:10,790 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2022-02-15 02:27:10,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:10,796 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-02-15 02:27:10,798 INFO  L144   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-15 02:27:10,798 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406886297]
[2022-02-15 02:27:10,799 INFO  L165   FreeRefinementEngine]: IpTcStrategyModulePreferences [406886297] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-15 02:27:10,799 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-15 02:27:10,799 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-15 02:27:10,800 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587057528]
[2022-02-15 02:27:10,800 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-15 02:27:10,803 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-15 02:27:10,803 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-15 02:27:10,841 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-15 02:27:10,841 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-15 02:27:10,843 INFO  L87              Difference]: Start difference. First operand  has 38 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand  has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-15 02:27:12,937 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-02-15 02:27:13,733 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-15 02:27:13,733 INFO  L93              Difference]: Finished difference Result 69 states and 113 transitions.
[2022-02-15 02:27:13,735 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-15 02:27:13,736 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23
[2022-02-15 02:27:13,736 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-15 02:27:13,740 INFO  L225             Difference]: With dead ends: 69
[2022-02-15 02:27:13,741 INFO  L226             Difference]: Without dead ends: 33
[2022-02-15 02:27:13,743 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 02:27:13,748 INFO  L933         BasicCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time
[2022-02-15 02:27:13,749 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 42 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time]
[2022-02-15 02:27:13,759 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2022-02-15 02:27:13,783 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2022-02-15 02:27:13,785 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2022-02-15 02:27:13,786 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions.
[2022-02-15 02:27:13,787 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 23
[2022-02-15 02:27:13,787 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-15 02:27:13,787 INFO  L470      AbstractCegarLoop]: Abstraction has 33 states and 44 transitions.
[2022-02-15 02:27:13,787 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-15 02:27:13,788 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions.
[2022-02-15 02:27:13,788 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-02-15 02:27:13,790 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-15 02:27:13,790 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-15 02:27:13,790 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-15 02:27:13,790 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-15 02:27:13,791 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-15 02:27:13,791 INFO  L85        PathProgramCache]: Analyzing trace with hash -563604624, now seen corresponding path program 1 times
[2022-02-15 02:27:13,795 INFO  L126   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-15 02:27:13,795 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404003303]
[2022-02-15 02:27:13,795 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-15 02:27:13,796 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-15 02:27:13,798 INFO  L274   tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-15 02:27:13,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:14,027 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-15 02:27:14,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:14,033 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-15 02:27:14,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:14,036 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2022-02-15 02:27:14,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:14,039 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-02-15 02:27:14,039 INFO  L144   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-15 02:27:14,040 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404003303]
[2022-02-15 02:27:14,040 INFO  L165   FreeRefinementEngine]: IpTcStrategyModulePreferences [404003303] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-15 02:27:14,040 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-15 02:27:14,040 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-02-15 02:27:14,040 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461966492]
[2022-02-15 02:27:14,040 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-15 02:27:14,040 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-02-15 02:27:14,041 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-15 02:27:14,041 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-02-15 02:27:14,041 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2022-02-15 02:27:14,041 INFO  L87              Difference]: Start difference. First operand 33 states and 44 transitions. Second operand  has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2022-02-15 02:27:20,242 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-02-15 02:27:23,651 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-02-15 02:27:25,653 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-02-15 02:27:27,656 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-02-15 02:27:28,074 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-15 02:27:28,074 INFO  L93              Difference]: Finished difference Result 68 states and 98 transitions.
[2022-02-15 02:27:28,075 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-02-15 02:27:28,075 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24
[2022-02-15 02:27:28,075 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-15 02:27:28,076 INFO  L225             Difference]: With dead ends: 68
[2022-02-15 02:27:28,076 INFO  L226             Difference]: Without dead ends: 48
[2022-02-15 02:27:28,077 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2022-02-15 02:27:28,078 INFO  L933         BasicCegarLoop]: 36 mSDtfsCounter, 34 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 48 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time
[2022-02-15 02:27:28,078 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 58 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 210 Invalid, 4 Unknown, 0 Unchecked, 13.9s Time]
[2022-02-15 02:27:28,079 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2022-02-15 02:27:28,091 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2022-02-15 02:27:28,091 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2022-02-15 02:27:28,092 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions.
[2022-02-15 02:27:28,104 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 24
[2022-02-15 02:27:28,104 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-15 02:27:28,104 INFO  L470      AbstractCegarLoop]: Abstraction has 48 states and 65 transitions.
[2022-02-15 02:27:28,104 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2022-02-15 02:27:28,105 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions.
[2022-02-15 02:27:28,105 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-02-15 02:27:28,105 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-15 02:27:28,105 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-15 02:27:28,105 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-15 02:27:28,106 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-15 02:27:28,106 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-15 02:27:28,106 INFO  L85        PathProgramCache]: Analyzing trace with hash -5094773, now seen corresponding path program 1 times
[2022-02-15 02:27:28,106 INFO  L126   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-15 02:27:28,106 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871835133]
[2022-02-15 02:27:28,106 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-15 02:27:28,107 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-15 02:27:28,108 INFO  L274   tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-15 02:27:28,124 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:28,209 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-15 02:27:28,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:28,224 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-15 02:27:28,227 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:28,234 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2022-02-15 02:27:28,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-15 02:27:28,239 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-02-15 02:27:28,239 INFO  L144   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2022-02-15 02:27:28,239 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871835133]
[2022-02-15 02:27:28,240 INFO  L165   FreeRefinementEngine]: IpTcStrategyModulePreferences [871835133] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-15 02:27:28,241 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-15 02:27:28,241 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-02-15 02:27:28,241 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118653125]
[2022-02-15 02:27:28,241 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-15 02:27:28,241 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-02-15 02:27:28,241 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2022-02-15 02:27:28,242 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-02-15 02:27:28,242 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2022-02-15 02:27:28,243 INFO  L87              Difference]: Start difference. First operand 48 states and 65 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2022-02-15 02:27:31,435 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-02-15 02:27:34,668 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-02-15 02:27:39,735 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-02-15 02:27:39,780 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-15 02:27:39,780 INFO  L93              Difference]: Finished difference Result 76 states and 111 transitions.
[2022-02-15 02:27:39,780 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-02-15 02:27:39,781 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26
[2022-02-15 02:27:39,781 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-15 02:27:39,783 INFO  L225             Difference]: With dead ends: 76
[2022-02-15 02:27:39,783 INFO  L226             Difference]: Without dead ends: 72
[2022-02-15 02:27:39,783 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2022-02-15 02:27:39,784 INFO  L933         BasicCegarLoop]: 28 mSDtfsCounter, 37 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 76 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time
[2022-02-15 02:27:39,784 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 50 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 217 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time]
[2022-02-15 02:27:39,785 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2022-02-15 02:27:39,809 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69.
[2022-02-15 02:27:39,809 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 69 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 33 states have internal predecessors, (39), 32 states have call successors, (32), 6 states have call predecessors, (32), 5 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29)
[2022-02-15 02:27:39,811 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 100 transitions.
[2022-02-15 02:27:39,812 INFO  L78                 Accepts]: Start accepts. Automaton has 69 states and 100 transitions. Word has length 26
[2022-02-15 02:27:39,812 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-02-15 02:27:39,812 INFO  L470      AbstractCegarLoop]: Abstraction has 69 states and 100 transitions.
[2022-02-15 02:27:39,812 INFO  L471      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, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2022-02-15 02:27:39,812 INFO  L276                IsEmpty]: Start isEmpty. Operand 69 states and 100 transitions.
[2022-02-15 02:27:39,813 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-02-15 02:27:39,814 INFO  L506         BasicCegarLoop]: Found error trace
[2022-02-15 02:27:39,814 INFO  L514         BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-15 02:27:39,814 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-02-15 02:27:39,814 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-15 02:27:39,815 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-15 02:27:39,815 INFO  L85        PathProgramCache]: Analyzing trace with hash -2000886032, now seen corresponding path program 1 times
[2022-02-15 02:27:39,815 INFO  L126   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2022-02-15 02:27:39,818 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190539712]
[2022-02-15 02:27:39,818 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-15 02:27:39,819 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-15 02:27:39,822 INFO  L274   tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2022-02-15 02:27:39,840 WARN  L132   FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2022-02-15 02:27:39,840 INFO  L628         BasicCegarLoop]: Counterexample might be feasible
[2022-02-15 02:27:39,844 INFO  L764   garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-02-15 02:27:39,845 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-02-15 02:27:39,856 INFO  L732         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2022-02-15 02:27:39,859 INFO  L180   ceAbstractionStarter]: Computing trace abstraction results
[2022-02-15 02:27:39,872 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 02:27:39 BoogieIcfgContainer
[2022-02-15 02:27:39,872 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-15 02:27:39,877 INFO  L158              Benchmark]: Toolchain (without parser) took 29887.97ms. Allocated memory was 180.4MB in the beginning and 266.3MB in the end (delta: 86.0MB). Free memory was 126.8MB in the beginning and 219.4MB in the end (delta: -92.5MB). There was no memory consumed. Max. memory is 8.0GB.
[2022-02-15 02:27:39,878 INFO  L158              Benchmark]: CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-15 02:27:39,878 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 261.90ms. Allocated memory is still 180.4MB. Free memory was 126.6MB in the beginning and 151.5MB in the end (delta: -24.9MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB.
[2022-02-15 02:27:39,878 INFO  L158              Benchmark]: Boogie Preprocessor took 41.92ms. Allocated memory is still 180.4MB. Free memory was 151.5MB in the beginning and 149.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-02-15 02:27:39,878 INFO  L158              Benchmark]: RCFGBuilder took 274.01ms. Allocated memory is still 180.4MB. Free memory was 149.9MB in the beginning and 137.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
[2022-02-15 02:27:39,879 INFO  L158              Benchmark]: TraceAbstraction took 29304.66ms. Allocated memory was 180.4MB in the beginning and 266.3MB in the end (delta: 86.0MB). Free memory was 136.8MB in the beginning and 219.4MB in the end (delta: -82.6MB). Peak memory consumption was 4.9MB. Max. memory is 8.0GB.
[2022-02-15 02:27:39,880 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 261.90ms. Allocated memory is still 180.4MB. Free memory was 126.6MB in the beginning and 151.5MB in the end (delta: -24.9MB). Peak memory consumption was 8.9MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 41.92ms. Allocated memory is still 180.4MB. Free memory was 151.5MB in the beginning and 149.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * RCFGBuilder took 274.01ms. Allocated memory is still 180.4MB. Free memory was 149.9MB in the beginning and 137.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB.
 * TraceAbstraction took 29304.66ms. Allocated memory was 180.4MB in the beginning and 266.3MB in the end (delta: 86.0MB). Free memory was 136.8MB in the beginning and 219.4MB in the end (delta: -82.6MB). Peak memory consumption was 4.9MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - UnprovableResult [Line: 14]: 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: 
[L20]              unsigned int n, p, q, r, h;
[L22]              n = __VERIFIER_nondet_uint()
[L23]  CALL        assume_abort_if_not(n>=0 && n<=10)
[L9]   COND FALSE  !(!cond)
[L23]  RET         assume_abort_if_not(n>=0 && n<=10)
[L24]  CALL        assume_abort_if_not(n < 4294967295 / 4)
[L9]   COND FALSE  !(!cond)
[L24]  RET         assume_abort_if_not(n < 4294967295 / 4)
[L26]              p = 0
[L27]              q = 1
[L28]              r = n
[L29]              h = 0
[L30]  COND TRUE   1
[L31]  COND TRUE   !(q <= n)
[L38]  COND TRUE   1
[L39]  CALL        __VERIFIER_assert(r < 2 * p + q)
[L12]  COND FALSE  !(!(cond))
[L39]  RET         __VERIFIER_assert(r < 2 * p + q)
[L40]  CALL        __VERIFIER_assert(p*p + r*q == n*q)
[L12]  COND FALSE  !(!(cond))
[L40]  RET         __VERIFIER_assert(p*p + r*q == n*q)
[L41]  CALL        __VERIFIER_assert(h * h * h - 12 * h * n * q + 16 * n * p * q - h * q * q - 4 * p * q * q + 12 * h * q * r - 16 * p * q * r == 0)
[L12]  COND TRUE   !(cond)
[L14]              reach_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.3s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 28.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 150 SdHoareTripleChecker+Invalid, 28.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 137 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 438 IncrementalHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 137 mSolverCounterUnsat, 103 mSDtfsCounter, 438 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 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 02:27:39,896 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...