/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt8.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-09 22:28:41,626 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-09 22:28:41,627 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-09 22:28:41,687 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-09 22:28:41,688 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-09 22:28:41,689 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-09 22:28:41,690 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-09 22:28:41,691 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-09 22:28:41,693 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-09 22:28:41,694 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-09 22:28:41,701 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-09 22:28:41,709 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-09 22:28:41,715 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-09 22:28:41,715 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-09 22:28:41,716 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-09 22:28:41,717 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-09 22:28:41,717 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-09 22:28:41,719 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-09 22:28:41,720 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-09 22:28:41,721 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-09 22:28:41,725 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-09 22:28:41,728 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-09 22:28:41,730 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-09 22:28:41,736 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-09 22:28:41,737 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-09 22:28:41,738 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-09 22:28:41,738 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-09 22:28:41,739 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-09 22:28:41,739 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-09 22:28:41,740 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-09 22:28:41,741 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-09 22:28:41,742 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-09 22:28:41,743 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-09 22:28:41,743 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-09 22:28:41,744 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-09 22:28:41,744 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-09 22:28:41,744 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-09 22:28:41,747 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-09 22:28:41,747 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-09 22:28:41,748 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf
[2022-01-09 22:28:41,776 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-09 22:28:41,777 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-09 22:28:41,777 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-09 22:28:41,777 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-09 22:28:41,778 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-09 22:28:41,778 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-09 22:28:41,778 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-09 22:28:41,778 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-09 22:28:41,778 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-09 22:28:41,779 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-09 22:28:41,779 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-09 22:28:41,779 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-09 22:28:41,779 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-09 22:28:41,779 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-09 22:28:41,779 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-09 22:28:41,779 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-09 22:28:41,779 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-09 22:28:41,780 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-09 22:28:41,780 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-09 22:28:41,780 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-09 22:28:41,780 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-09 22:28:41,780 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-09 22:28:41,780 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-09 22:28:41,780 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-09 22:28:41,780 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-09 22:28:41,781 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-09 22:28:41,781 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-09 22:28:41,781 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-09 22:28:41,781 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-09 22:28:41,781 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-09 22:28:41,781 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-09 22:28:41,984 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-09 22:28:42,007 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-09 22:28:42,009 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-09 22:28:42,010 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-09 22:28:42,010 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-09 22:28:42,011 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt8.c
[2022-01-09 22:28:42,060 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66de39acc/cc48bcb1abf14600ace81d80d458d390/FLAG6bb6f9518
[2022-01-09 22:28:42,452 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-09 22:28:42,453 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt8.c
[2022-01-09 22:28:42,462 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66de39acc/cc48bcb1abf14600ace81d80d458d390/FLAG6bb6f9518
[2022-01-09 22:28:42,858 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66de39acc/cc48bcb1abf14600ace81d80d458d390
[2022-01-09 22:28:42,860 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-09 22:28:42,861 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-09 22:28:42,863 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-09 22:28:42,863 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-09 22:28:42,869 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-09 22:28:42,869 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:28:42" (1/1) ...
[2022-01-09 22:28:42,870 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea3b049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:42, skipping insertion in model container
[2022-01-09 22:28:42,870 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:28:42" (1/1) ...
[2022-01-09 22:28:42,875 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-09 22:28:42,887 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-09 22:28:43,017 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt8.c[403,416]
[2022-01-09 22:28:43,059 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-09 22:28:43,065 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-09 22:28:43,080 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt8.c[403,416]
[2022-01-09 22:28:43,102 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-09 22:28:43,116 INFO  L208         MainTranslator]: Completed translation
[2022-01-09 22:28:43,117 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43 WrapperNode
[2022-01-09 22:28:43,118 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-09 22:28:43,119 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-09 22:28:43,119 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-09 22:28:43,120 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-09 22:28:43,125 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43" (1/1) ...
[2022-01-09 22:28:43,143 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43" (1/1) ...
[2022-01-09 22:28:43,166 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56
[2022-01-09 22:28:43,167 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-09 22:28:43,168 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-09 22:28:43,168 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-09 22:28:43,168 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-09 22:28:43,174 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43" (1/1) ...
[2022-01-09 22:28:43,174 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43" (1/1) ...
[2022-01-09 22:28:43,177 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43" (1/1) ...
[2022-01-09 22:28:43,177 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43" (1/1) ...
[2022-01-09 22:28:43,187 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43" (1/1) ...
[2022-01-09 22:28:43,191 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43" (1/1) ...
[2022-01-09 22:28:43,197 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43" (1/1) ...
[2022-01-09 22:28:43,199 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-09 22:28:43,199 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-09 22:28:43,199 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-09 22:28:43,199 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-09 22:28:43,201 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43" (1/1) ...
[2022-01-09 22:28:43,206 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-09 22:28:43,214 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-09 22:28:43,228 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)
[2022-01-09 22:28:43,240 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
[2022-01-09 22:28:43,264 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-09 22:28:43,265 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-09 22:28:43,265 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-09 22:28:43,265 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-09 22:28:43,318 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-09 22:28:43,319 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-09 22:28:52,125 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-09 22:28:52,129 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-09 22:28:52,130 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-09 22:28:52,131 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:28:52 BoogieIcfgContainer
[2022-01-09 22:28:52,131 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-09 22:28:52,132 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-09 22:28:52,132 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-09 22:28:52,135 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-09 22:28:52,135 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:28:42" (1/3) ...
[2022-01-09 22:28:52,139 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60620b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:28:52, skipping insertion in model container
[2022-01-09 22:28:52,139 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:28:43" (2/3) ...
[2022-01-09 22:28:52,139 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60620b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:28:52, skipping insertion in model container
[2022-01-09 22:28:52,139 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:28:52" (3/3) ...
[2022-01-09 22:28:52,140 INFO  L111   eAbstractionObserver]: Analyzing ICFG sumt8.c
[2022-01-09 22:28:52,144 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-09 22:28:52,144 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-09 22:28:52,193 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-09 22:28:52,202 INFO  L339      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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR
[2022-01-09 22:28:52,202 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-09 22:28:52,214 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-09 22:28:52,220 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-09 22:28:52,220 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-09 22:28:52,221 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-09 22:28:52,221 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-09 22:28:52,224 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-09 22:28:52,225 INFO  L85        PathProgramCache]: Analyzing trace with hash 183352048, now seen corresponding path program 1 times
[2022-01-09 22:28:52,232 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-09 22:28:52,232 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372600193]
[2022-01-09 22:28:52,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 22:28:52,233 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-09 22:28:52,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 22:28:52,688 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-09 22:28:52,688 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-09 22:28:52,689 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372600193]
[2022-01-09 22:28:52,689 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372600193] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-09 22:28:52,689 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-09 22:28:52,689 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-09 22:28:52,691 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178952959]
[2022-01-09 22:28:52,691 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-09 22:28:52,694 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-09 22:28:52,694 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-09 22:28:52,719 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-09 22:28:52,721 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-01-09 22:28:52,722 INFO  L87              Difference]: Start difference. First operand  has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-09 22:28:54,815 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 []
[2022-01-09 22:28:57,000 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:28:59,177 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:01,336 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:03,505 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:03,670 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-09 22:29:03,670 INFO  L93              Difference]: Finished difference Result 45 states and 67 transitions.
[2022-01-09 22:29:03,672 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-09 22:29:03,672 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2022-01-09 22:29:03,673 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-09 22:29:03,678 INFO  L225             Difference]: With dead ends: 45
[2022-01-09 22:29:03,679 INFO  L226             Difference]: Without dead ends: 20
[2022-01-09 22:29:03,680 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-01-09 22:29:03,683 INFO  L933         BasicCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time
[2022-01-09 22:29:03,684 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 57 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 5 Unknown, 0 Unchecked, 10.9s Time]
[2022-01-09 22:29:03,697 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-09 22:29:03,707 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-01-09 22:29:03,708 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-09 22:29:03,711 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions.
[2022-01-09 22:29:03,712 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 8
[2022-01-09 22:29:03,712 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-09 22:29:03,713 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 27 transitions.
[2022-01-09 22:29:03,713 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-09 22:29:03,713 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions.
[2022-01-09 22:29:03,713 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-09 22:29:03,713 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-09 22:29:03,714 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-01-09 22:29:03,714 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-09 22:29:03,714 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-09 22:29:03,715 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-09 22:29:03,715 INFO  L85        PathProgramCache]: Analyzing trace with hash -741818333, now seen corresponding path program 1 times
[2022-01-09 22:29:03,715 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-09 22:29:03,715 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503213207]
[2022-01-09 22:29:03,715 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 22:29:03,716 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-09 22:29:03,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 22:29:03,833 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-09 22:29:03,833 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-09 22:29:03,833 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503213207]
[2022-01-09 22:29:03,834 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503213207] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-09 22:29:03,834 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155217953]
[2022-01-09 22:29:03,834 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 22:29:03,835 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 22:29:03,835 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-09 22:29:03,836 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-09 22:29:03,839 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-09 22:29:03,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 22:29:03,892 INFO  L263         TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-01-09 22:29:03,897 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-09 22:29:04,441 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-09 22:29:04,442 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-09 22:29:04,594 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-01-09 22:29:04,595 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155217953] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-09 22:29:04,595 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-09 22:29:04,595 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 5] total 11
[2022-01-09 22:29:04,595 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219125268]
[2022-01-09 22:29:04,596 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-09 22:29:04,596 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-09 22:29:04,596 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-09 22:29:04,597 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-09 22:29:04,597 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2022-01-09 22:29:04,597 INFO  L87              Difference]: Start difference. First operand 20 states and 27 transitions. Second operand  has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-09 22:29:06,662 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:08,832 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:10,989 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:13,152 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:15,319 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:17,476 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:19,658 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:21,813 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:23,955 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:26,116 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:28,256 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:30,450 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:32,558 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:32,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-09 22:29:32,678 INFO  L93              Difference]: Finished difference Result 37 states and 53 transitions.
[2022-01-09 22:29:32,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-09 22:29:32,683 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2022-01-09 22:29:32,683 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-09 22:29:32,683 INFO  L225             Difference]: With dead ends: 37
[2022-01-09 22:29:32,684 INFO  L226             Difference]: Without dead ends: 24
[2022-01-09 22:29:32,684 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2022-01-09 22:29:32,685 INFO  L933         BasicCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time
[2022-01-09 22:29:32,685 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 13 Unknown, 0 Unchecked, 28.0s Time]
[2022-01-09 22:29:32,686 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2022-01-09 22:29:32,689 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2022-01-09 22:29:32,690 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-09 22:29:32,690 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions.
[2022-01-09 22:29:32,690 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13
[2022-01-09 22:29:32,690 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-09 22:29:32,691 INFO  L470      AbstractCegarLoop]: Abstraction has 24 states and 31 transitions.
[2022-01-09 22:29:32,691 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-09 22:29:32,691 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions.
[2022-01-09 22:29:32,691 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-09 22:29:32,691 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-09 22:29:32,692 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-09 22:29:32,713 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-09 22:29:32,892 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 22:29:32,893 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-09 22:29:32,893 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-09 22:29:32,893 INFO  L85        PathProgramCache]: Analyzing trace with hash 108668990, now seen corresponding path program 1 times
[2022-01-09 22:29:32,893 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-09 22:29:32,893 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905787765]
[2022-01-09 22:29:32,894 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 22:29:32,894 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-09 22:29:32,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 22:29:33,009 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-09 22:29:33,010 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-09 22:29:33,010 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905787765]
[2022-01-09 22:29:33,011 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905787765] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-09 22:29:33,011 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29466350]
[2022-01-09 22:29:33,011 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 22:29:33,011 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 22:29:33,012 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-09 22:29:33,013 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-09 22:29:33,014 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-09 22:29:33,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 22:29:33,056 INFO  L263         TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-01-09 22:29:33,057 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-09 22:29:33,519 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-09 22:29:33,519 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-09 22:29:33,690 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-01-09 22:29:33,691 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [29466350] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-09 22:29:33,691 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-09 22:29:33,691 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 5] total 11
[2022-01-09 22:29:33,691 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898614577]
[2022-01-09 22:29:33,691 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-09 22:29:33,691 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-09 22:29:33,692 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-09 22:29:33,692 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-09 22:29:33,692 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2022-01-09 22:29:33,692 INFO  L87              Difference]: Start difference. First operand 24 states and 31 transitions. Second operand  has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-09 22:29:35,755 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 []
[2022-01-09 22:29:37,939 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:40,100 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:42,265 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:44,463 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:46,623 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:48,781 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:50,940 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:53,162 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:55,270 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:57,385 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:29:59,554 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:30:01,723 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-09 22:30:01,840 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-09 22:30:01,840 INFO  L93              Difference]: Finished difference Result 39 states and 54 transitions.
[2022-01-09 22:30:01,843 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-09 22:30:01,843 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15
[2022-01-09 22:30:01,843 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-09 22:30:01,844 INFO  L225             Difference]: With dead ends: 39
[2022-01-09 22:30:01,844 INFO  L226             Difference]: Without dead ends: 26
[2022-01-09 22:30:01,844 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2022-01-09 22:30:01,845 INFO  L933         BasicCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time
[2022-01-09 22:30:01,845 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 53 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 13 Unknown, 0 Unchecked, 28.1s Time]
[2022-01-09 22:30:01,846 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2022-01-09 22:30:01,848 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25.
[2022-01-09 22:30:01,849 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-09 22:30:01,849 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions.
[2022-01-09 22:30:01,849 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 15
[2022-01-09 22:30:01,849 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-09 22:30:01,850 INFO  L470      AbstractCegarLoop]: Abstraction has 25 states and 32 transitions.
[2022-01-09 22:30:01,850 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-09 22:30:01,850 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions.
[2022-01-09 22:30:01,850 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-09 22:30:01,850 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-09 22:30:01,850 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-09 22:30:01,870 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-09 22:30:02,063 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2022-01-09 22:30:02,064 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-09 22:30:02,064 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-09 22:30:02,064 INFO  L85        PathProgramCache]: Analyzing trace with hash -924950480, now seen corresponding path program 1 times
[2022-01-09 22:30:02,064 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-09 22:30:02,064 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524934066]
[2022-01-09 22:30:02,065 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 22:30:02,065 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-09 22:30:02,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 22:30:02,753 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-09 22:30:02,753 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-09 22:30:02,753 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524934066]
[2022-01-09 22:30:02,754 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524934066] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-09 22:30:02,754 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913512426]
[2022-01-09 22:30:02,754 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 22:30:02,754 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 22:30:02,754 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-09 22:30:02,755 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-09 22:30:02,757 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-09 22:30:02,797 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 22:30:02,798 INFO  L263         TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-01-09 22:30:02,800 INFO  L286         TraceCheckSpWp]: Computing forward predicates...