/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/loops-crafted-1/Mono5_1.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-03-31 23:03:47,085 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-03-31 23:03:47,087 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-03-31 23:03:47,113 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-03-31 23:03:47,114 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-03-31 23:03:47,117 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2023-03-31 23:03:47,126 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2023-03-31 23:03:47,127 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2023-03-31 23:03:47,131 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-03-31 23:03:47,131 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-03-31 23:03:47,131 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-03-31 23:03:47,133 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2023-03-31 23:03:47,138 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-03-31 23:03:47,138 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-03-31 23:03:47,139 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-03-31 23:03:47,145 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-03-31 23:03:47,145 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-03-31 23:03:47,150 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-03-31 23:03:47,150 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-03-31 23:03:47,151 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf
[2023-03-31 23:03:47,177 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-03-31 23:03:47,177 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-03-31 23:03:47,178 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-03-31 23:03:47,178 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-03-31 23:03:47,178 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-03-31 23:03:47,178 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-03-31 23:03:47,178 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-03-31 23:03:47,178 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-03-31 23:03:47,179 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-03-31 23:03:47,179 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-03-31 23:03:47,179 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-03-31 23:03:47,179 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-03-31 23:03:47,179 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-03-31 23:03:47,179 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-03-31 23:03:47,179 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-03-31 23:03:47,180 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-03-31 23:03:47,180 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-03-31 23:03:47,180 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-03-31 23:03:47,180 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-03-31 23:03:47,180 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-03-31 23:03:47,180 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-03-31 23:03:47,180 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-03-31 23:03:47,180 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-03-31 23:03:47,180 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-03-31 23:03:47,181 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-03-31 23:03:47,181 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-03-31 23:03:47,181 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-03-31 23:03:47,181 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-03-31 23:03:47,181 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-03-31 23:03:47,181 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-03-31 23:03:47,181 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-03-31 23:03:47,181 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-03-31 23:03:47,181 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-31 23:03:47,181 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-03-31 23:03:47,181 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-03-31 23:03:47,182 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-03-31 23:03:47,182 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-03-31 23:03:47,182 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-03-31 23:03:47,182 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-03-31 23:03:47,182 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-03-31 23:03:47,182 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-03-31 23:03:47,182 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain
[2023-03-31 23:03:47,357 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-03-31 23:03:47,391 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-03-31 23:03:47,393 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-03-31 23:03:47,394 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-03-31 23:03:47,395 INFO  L275        PluginConnector]: CDTParser initialized
[2023-03-31 23:03:47,396 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/Mono5_1.c
[2023-03-31 23:03:48,409 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-03-31 23:03:48,565 INFO  L351              CDTParser]: Found 1 translation units.
[2023-03-31 23:03:48,565 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/Mono5_1.c
[2023-03-31 23:03:48,569 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97570c086/cc33127ef4fc43579ee8fe64e4fc9793/FLAGfc6908e2c
[2023-03-31 23:03:48,582 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97570c086/cc33127ef4fc43579ee8fe64e4fc9793
[2023-03-31 23:03:48,584 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-03-31 23:03:48,585 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-03-31 23:03:48,587 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-03-31 23:03:48,587 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-03-31 23:03:48,590 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-03-31 23:03:48,590 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:03:48" (1/1) ...
[2023-03-31 23:03:48,591 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@511c3059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48, skipping insertion in model container
[2023-03-31 23:03:48,591 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:03:48" (1/1) ...
[2023-03-31 23:03:48,595 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-03-31 23:03:48,607 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-03-31 23:03:48,710 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/Mono5_1.c[311,324]
[2023-03-31 23:03:48,717 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-31 23:03:48,725 INFO  L203         MainTranslator]: Completed pre-run
[2023-03-31 23:03:48,732 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/Mono5_1.c[311,324]
[2023-03-31 23:03:48,734 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-31 23:03:48,742 INFO  L208         MainTranslator]: Completed translation
[2023-03-31 23:03:48,743 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48 WrapperNode
[2023-03-31 23:03:48,743 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-03-31 23:03:48,743 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-03-31 23:03:48,743 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-03-31 23:03:48,744 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-03-31 23:03:48,750 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48" (1/1) ...
[2023-03-31 23:03:48,750 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48" (1/1) ...
[2023-03-31 23:03:48,754 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48" (1/1) ...
[2023-03-31 23:03:48,754 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48" (1/1) ...
[2023-03-31 23:03:48,757 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48" (1/1) ...
[2023-03-31 23:03:48,759 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48" (1/1) ...
[2023-03-31 23:03:48,762 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48" (1/1) ...
[2023-03-31 23:03:48,763 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48" (1/1) ...
[2023-03-31 23:03:48,764 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-03-31 23:03:48,765 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-03-31 23:03:48,765 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-03-31 23:03:48,765 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-03-31 23:03:48,766 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48" (1/1) ...
[2023-03-31 23:03:48,771 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-31 23:03:48,778 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 23:03:48,794 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)
[2023-03-31 23:03:48,817 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
[2023-03-31 23:03:48,820 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-03-31 23:03:48,820 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-03-31 23:03:48,820 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-03-31 23:03:48,821 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-03-31 23:03:48,821 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-03-31 23:03:48,821 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-03-31 23:03:48,821 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-03-31 23:03:48,821 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-03-31 23:03:48,821 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-03-31 23:03:48,821 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-03-31 23:03:48,821 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-03-31 23:03:48,821 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-03-31 23:03:48,821 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-03-31 23:03:48,821 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-03-31 23:03:48,821 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-03-31 23:03:48,822 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-03-31 23:03:48,822 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-03-31 23:03:48,866 INFO  L236             CfgBuilder]: Building ICFG
[2023-03-31 23:03:48,867 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-03-31 23:03:48,977 INFO  L277             CfgBuilder]: Performing block encoding
[2023-03-31 23:03:49,011 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-03-31 23:03:49,012 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-03-31 23:03:49,026 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:03:49 BoogieIcfgContainer
[2023-03-31 23:03:49,026 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-03-31 23:03:49,028 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-03-31 23:03:49,028 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-03-31 23:03:49,030 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-03-31 23:03:49,030 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:03:48" (1/3) ...
[2023-03-31 23:03:49,030 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436dc4e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:03:49, skipping insertion in model container
[2023-03-31 23:03:49,031 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:03:48" (2/3) ...
[2023-03-31 23:03:49,031 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436dc4e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:03:49, skipping insertion in model container
[2023-03-31 23:03:49,031 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:03:49" (3/3) ...
[2023-03-31 23:03:49,032 INFO  L112   eAbstractionObserver]: Analyzing ICFG Mono5_1.c
[2023-03-31 23:03:49,058 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-03-31 23:03:49,059 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-03-31 23:03:49,114 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-03-31 23:03:49,130 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1074f74c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-03-31 23:03:49,130 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-03-31 23:03:49,133 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-03-31 23:03:49,138 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-03-31 23:03:49,138 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 23:03:49,139 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 23:03:49,139 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 23:03:49,143 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 23:03:49,143 INFO  L85        PathProgramCache]: Analyzing trace with hash 1483697893, now seen corresponding path program 1 times
[2023-03-31 23:03:49,150 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 23:03:49,150 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032758681]
[2023-03-31 23:03:49,150 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 23:03:49,150 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 23:03:49,236 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 23:03:49,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 23:03:49,445 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 23:03:49,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032758681]
[2023-03-31 23:03:49,445 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032758681] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-31 23:03:49,446 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-31 23:03:49,446 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-03-31 23:03:49,447 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24256141]
[2023-03-31 23:03:49,447 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-31 23:03:49,450 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-03-31 23:03:49,450 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-03-31 23:03:49,468 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-03-31 23:03:49,468 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-03-31 23:03:49,470 INFO  L87              Difference]: Start difference. First operand  has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-31 23:03:49,521 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 23:03:49,522 INFO  L93              Difference]: Finished difference Result 33 states and 36 transitions.
[2023-03-31 23:03:49,525 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-03-31 23:03:49,526 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10
[2023-03-31 23:03:49,526 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 23:03:49,530 INFO  L225             Difference]: With dead ends: 33
[2023-03-31 23:03:49,530 INFO  L226             Difference]: Without dead ends: 12
[2023-03-31 23:03:49,532 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-03-31 23:03:49,534 INFO  L413           NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-03-31 23:03:49,535 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 40 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-03-31 23:03:49,552 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2023-03-31 23:03:49,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2023-03-31 23:03:49,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-31 23:03:49,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2023-03-31 23:03:49,563 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10
[2023-03-31 23:03:49,563 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 23:03:49,563 INFO  L495      AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2023-03-31 23:03:49,563 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-31 23:03:49,563 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2023-03-31 23:03:49,564 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2023-03-31 23:03:49,564 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 23:03:49,564 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 23:03:49,564 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-03-31 23:03:49,564 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 23:03:49,565 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 23:03:49,565 INFO  L85        PathProgramCache]: Analyzing trace with hash -1159980082, now seen corresponding path program 1 times
[2023-03-31 23:03:49,565 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 23:03:49,565 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121193333]
[2023-03-31 23:03:49,565 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 23:03:49,566 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 23:03:49,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 23:03:49,714 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 23:03:49,714 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 23:03:49,714 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121193333]
[2023-03-31 23:03:49,714 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121193333] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-31 23:03:49,715 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000335073]
[2023-03-31 23:03:49,715 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 23:03:49,715 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 23:03:49,715 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 23:03:49,717 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-03-31 23:03:49,718 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-03-31 23:03:49,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 23:03:49,753 INFO  L262         TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-03-31 23:03:49,756 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-31 23:03:49,868 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 23:03:49,869 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-03-31 23:03:49,932 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 23:03:49,932 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000335073] provided 0 perfect and 2 imperfect interpolant sequences
[2023-03-31 23:03:49,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [634699330]
[2023-03-31 23:03:49,944 INFO  L159        IcfgInterpreter]: Started Sifa with 11 locations of interest
[2023-03-31 23:03:49,944 INFO  L166        IcfgInterpreter]: Building call graph
[2023-03-31 23:03:49,946 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2023-03-31 23:03:49,949 INFO  L176        IcfgInterpreter]: Starting interpretation
[2023-03-31 23:03:49,950 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2023-03-31 23:03:50,004 INFO  L197        IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs
[2023-03-31 23:03:50,077 INFO  L197        IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs
[2023-03-31 23:03:50,110 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs
[2023-03-31 23:03:50,129 INFO  L180        IcfgInterpreter]: Interpretation finished
[2023-03-31 23:03:50,358 INFO  L133             SifaRunner]: Sifa could not show that error location is unreachable, found '165#(and (exists ((v_main_~x~0_BEFORE_CALL_1 Int) (v_main_~z~0_BEFORE_CALL_2 Int) (v_main_~y~0_BEFORE_CALL_1 Int)) (and (<= (mod v_main_~y~0_BEFORE_CALL_1 4294967296) (mod v_main_~x~0_BEFORE_CALL_1 4294967296)) (= (mod v_main_~z~0_BEFORE_CALL_2 4294967296) 0) (or (and (= v_main_~y~0_BEFORE_CALL_1 10000000) (<= 0 v_main_~x~0_BEFORE_CALL_1) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= v_main_~z~0_BEFORE_CALL_2 5000000) (= |#NULL.base| 0)) (and (= v_main_~y~0_BEFORE_CALL_1 10000000) (<= 0 v_main_~x~0_BEFORE_CALL_1) (= 5000000 v_main_~z~0_BEFORE_CALL_2) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location
[2023-03-31 23:03:50,358 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED
[2023-03-31 23:03:50,358 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-03-31 23:03:50,358 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12
[2023-03-31 23:03:50,359 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559236277]
[2023-03-31 23:03:50,359 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-03-31 23:03:50,359 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-03-31 23:03:50,359 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-03-31 23:03:50,360 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-03-31 23:03:50,360 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380
[2023-03-31 23:03:50,361 INFO  L87              Difference]: Start difference. First operand 12 states and 12 transitions. Second operand  has 12 states, 12 states have (on average 1.25) internal successors, (15), 10 states have internal predecessors, (15), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-31 23:03:50,419 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 23:03:50,419 INFO  L93              Difference]: Finished difference Result 24 states and 27 transitions.
[2023-03-31 23:03:50,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-03-31 23:03:50,420 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 1.25) internal successors, (15), 10 states have internal predecessors, (15), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2023-03-31 23:03:50,420 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 23:03:50,420 INFO  L225             Difference]: With dead ends: 24
[2023-03-31 23:03:50,421 INFO  L226             Difference]: Without dead ends: 16
[2023-03-31 23:03:50,422 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420
[2023-03-31 23:03:50,424 INFO  L413           NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-03-31 23:03:50,424 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 49 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-03-31 23:03:50,426 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2023-03-31 23:03:50,430 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2023-03-31 23:03:50,430 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-31 23:03:50,430 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions.
[2023-03-31 23:03:50,431 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11
[2023-03-31 23:03:50,431 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 23:03:50,431 INFO  L495      AbstractCegarLoop]: Abstraction has 16 states and 16 transitions.
[2023-03-31 23:03:50,431 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 1.25) internal successors, (15), 10 states have internal predecessors, (15), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-31 23:03:50,431 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions.
[2023-03-31 23:03:50,431 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2023-03-31 23:03:50,432 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 23:03:50,432 INFO  L195           NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 23:03:50,458 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-03-31 23:03:50,636 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 23:03:50,637 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 23:03:50,637 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 23:03:50,638 INFO  L85        PathProgramCache]: Analyzing trace with hash -1246629490, now seen corresponding path program 2 times
[2023-03-31 23:03:50,639 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 23:03:50,641 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430147591]
[2023-03-31 23:03:50,642 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 23:03:50,642 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 23:03:50,663 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 23:03:51,005 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 23:03:51,006 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 23:03:51,006 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430147591]
[2023-03-31 23:03:51,006 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430147591] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-31 23:03:51,006 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002341572]
[2023-03-31 23:03:51,006 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-03-31 23:03:51,006 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 23:03:51,006 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 23:03:51,007 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-03-31 23:03:51,009 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-03-31 23:03:51,070 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2023-03-31 23:03:51,070 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-03-31 23:03:51,071 INFO  L262         TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core
[2023-03-31 23:03:51,072 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-31 23:03:51,444 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 23:03:51,444 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-03-31 23:03:52,563 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 23:03:52,563 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002341572] provided 0 perfect and 2 imperfect interpolant sequences
[2023-03-31 23:03:52,563 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1422437150]
[2023-03-31 23:03:52,568 INFO  L159        IcfgInterpreter]: Started Sifa with 11 locations of interest
[2023-03-31 23:03:52,568 INFO  L166        IcfgInterpreter]: Building call graph
[2023-03-31 23:03:52,569 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2023-03-31 23:03:52,569 INFO  L176        IcfgInterpreter]: Starting interpretation
[2023-03-31 23:03:52,569 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2023-03-31 23:03:52,587 INFO  L197        IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs
[2023-03-31 23:03:52,619 INFO  L197        IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs
[2023-03-31 23:03:52,645 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs
[2023-03-31 23:03:52,649 INFO  L180        IcfgInterpreter]: Interpretation finished
[2023-03-31 23:03:53,006 INFO  L133             SifaRunner]: Sifa could not show that error location is unreachable, found '357#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((v_main_~x~0_BEFORE_CALL_2 Int) (v_main_~z~0_BEFORE_CALL_4 Int) (v_main_~y~0_BEFORE_CALL_2 Int)) (and (<= (mod v_main_~y~0_BEFORE_CALL_2 4294967296) (mod v_main_~x~0_BEFORE_CALL_2 4294967296)) (= (mod v_main_~z~0_BEFORE_CALL_4 4294967296) 0) (or (and (= 5000000 v_main_~z~0_BEFORE_CALL_4) (= |#NULL.offset| 0) (= v_main_~y~0_BEFORE_CALL_2 10000000) (<= 0 v_main_~x~0_BEFORE_CALL_2) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) (and (<= v_main_~z~0_BEFORE_CALL_4 5000000) (= |#NULL.offset| 0) (= v_main_~y~0_BEFORE_CALL_2 10000000) (<= 0 v_main_~x~0_BEFORE_CALL_2) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))))))' at error location
[2023-03-31 23:03:53,006 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED
[2023-03-31 23:03:53,006 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-03-31 23:03:53,006 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26
[2023-03-31 23:03:53,007 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634380920]
[2023-03-31 23:03:53,007 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-03-31 23:03:53,007 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2023-03-31 23:03:53,007 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-03-31 23:03:53,008 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2023-03-31 23:03:53,008 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122
[2023-03-31 23:03:53,008 INFO  L87              Difference]: Start difference. First operand 16 states and 16 transitions. Second operand  has 26 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-31 23:03:54,293 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 23:03:54,293 INFO  L93              Difference]: Finished difference Result 46 states and 57 transitions.
[2023-03-31 23:03:54,294 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2023-03-31 23:03:54,294 INFO  L78                 Accepts]: Start accepts. Automaton has  has 26 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15
[2023-03-31 23:03:54,294 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 23:03:54,294 INFO  L225             Difference]: With dead ends: 46
[2023-03-31 23:03:54,294 INFO  L226             Difference]: Without dead ends: 28
[2023-03-31 23:03:54,295 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=661, Invalid=2309, Unknown=0, NotChecked=0, Total=2970
[2023-03-31 23:03:54,296 INFO  L413           NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-03-31 23:03:54,296 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 63 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-03-31 23:03:54,297 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2023-03-31 23:03:54,301 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2023-03-31 23:03:54,301 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-31 23:03:54,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions.
[2023-03-31 23:03:54,302 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15
[2023-03-31 23:03:54,302 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 23:03:54,302 INFO  L495      AbstractCegarLoop]: Abstraction has 28 states and 28 transitions.
[2023-03-31 23:03:54,302 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 26 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-31 23:03:54,302 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions.
[2023-03-31 23:03:54,302 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2023-03-31 23:03:54,303 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 23:03:54,303 INFO  L195           NwaCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 23:03:54,313 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-03-31 23:03:54,507 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2023-03-31 23:03:54,510 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 23:03:54,510 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 23:03:54,510 INFO  L85        PathProgramCache]: Analyzing trace with hash -978439474, now seen corresponding path program 3 times
[2023-03-31 23:03:54,510 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 23:03:54,510 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487717257]
[2023-03-31 23:03:54,511 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 23:03:54,511 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 23:03:54,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 23:03:55,526 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 23:03:55,527 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 23:03:55,528 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487717257]
[2023-03-31 23:03:55,528 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487717257] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-31 23:03:55,529 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150408521]
[2023-03-31 23:03:55,529 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-03-31 23:03:55,529 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 23:03:55,529 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 23:03:55,530 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-03-31 23:03:55,557 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-03-31 23:04:23,142 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-03-31 23:04:23,142 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-03-31 23:04:23,159 INFO  L262         TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 25 conjunts are in the unsatisfiable core
[2023-03-31 23:04:23,162 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-31 23:04:24,472 INFO  L134       CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 23:04:24,473 INFO  L327         TraceCheckSpWp]: Computing backward predicates...