/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_Bitvector.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound1.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 02:59:19,320 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 02:59:19,321 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 02:59:19,377 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 02:59:19,377 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 02:59:19,378 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 02:59:19,379 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 02:59:19,384 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 02:59:19,385 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 02:59:19,385 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 02:59:19,386 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 02:59:19,388 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 02:59:19,389 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 02:59:19,389 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 02:59:19,391 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 02:59:19,392 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 02:59:19,393 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 02:59:19,394 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 02:59:19,395 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 02:59:19,396 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 02:59:19,398 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 02:59:19,399 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 02:59:19,399 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
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[2022-01-10 02:59:19,401 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 02:59:19,401 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 02:59:19,402 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 02:59:19,402 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 02:59:19,403 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 02:59:19,404 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 02:59:19,404 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 02:59:19,405 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 02:59:19,405 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 02:59:19,405 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 02:59:19,407 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 02:59:19,407 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2022-01-10 02:59:19,424 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 02:59:19,424 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 02:59:19,425 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 02:59:19,425 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 02:59:19,425 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 02:59:19,426 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 02:59:19,426 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 02:59:19,426 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 02:59:19,426 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 02:59:19,426 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 02:59:19,427 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 02:59:19,427 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 02:59:19,427 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 02:59:19,427 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 02:59:19,427 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 02:59:19,427 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 02:59:19,428 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 02:59:19,428 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 02:59:19,428 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 02:59:19,428 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 02:59:19,428 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 02:59:19,428 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 02:59:19,428 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 02:59:19,429 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 02:59:19,429 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 02:59:19,429 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 02:59:19,429 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 02:59:19,429 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 02:59:19,429 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 02:59:19,430 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 02:59:19,430 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 02:59:19,430 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 02:59:19,430 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 02:59:19,430 INFO  L138        SettingsManager]:  * Logic for external solver=AUFBV
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 02:59:19,641 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 02:59:19,668 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 02:59:19,670 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 02:59:19,671 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 02:59:19,672 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 02:59:19,673 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound1.c
[2022-01-10 02:59:19,729 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26c0c5939/092489861deb4f45b9e4cd08c7c3c966/FLAG4e7df77d0
[2022-01-10 02:59:20,048 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 02:59:20,049 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound1.c
[2022-01-10 02:59:20,054 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26c0c5939/092489861deb4f45b9e4cd08c7c3c966/FLAG4e7df77d0
[2022-01-10 02:59:20,477 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26c0c5939/092489861deb4f45b9e4cd08c7c3c966
[2022-01-10 02:59:20,479 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 02:59:20,480 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 02:59:20,482 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 02:59:20,482 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 02:59:20,484 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 02:59:20,485 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,485 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6a6a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20, skipping insertion in model container
[2022-01-10 02:59:20,486 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,491 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 02:59:20,503 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 02:59:20,682 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound1.c[597,610]
[2022-01-10 02:59:20,723 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 02:59:20,733 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 02:59:20,746 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound1.c[597,610]
[2022-01-10 02:59:20,768 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 02:59:20,778 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 02:59:20,779 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20 WrapperNode
[2022-01-10 02:59:20,779 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 02:59:20,781 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 02:59:20,781 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 02:59:20,781 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 02:59:20,787 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,794 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,811 INFO  L137                Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52
[2022-01-10 02:59:20,812 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 02:59:20,813 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 02:59:20,813 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 02:59:20,813 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 02:59:20,819 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,819 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,829 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,830 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,841 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,844 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,845 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,846 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 02:59:20,847 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 02:59:20,847 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 02:59:20,847 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 02:59:20,850 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20" (1/1) ...
[2022-01-10 02:59:20,856 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 02:59:20,865 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 02:59:20,880 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)
[2022-01-10 02:59:20,906 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
[2022-01-10 02:59:20,926 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 02:59:20,926 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 02:59:20,926 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 02:59:20,926 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 02:59:20,927 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-10 02:59:20,927 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-10 02:59:20,980 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 02:59:20,982 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 02:59:21,312 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 02:59:21,316 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 02:59:21,317 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 02:59:21,318 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:59:21 BoogieIcfgContainer
[2022-01-10 02:59:21,318 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 02:59:21,323 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 02:59:21,323 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 02:59:21,329 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 02:59:21,329 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:59:20" (1/3) ...
[2022-01-10 02:59:21,330 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2112eec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:59:21, skipping insertion in model container
[2022-01-10 02:59:21,330 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:59:20" (2/3) ...
[2022-01-10 02:59:21,330 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2112eec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:59:21, skipping insertion in model container
[2022-01-10 02:59:21,330 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:59:21" (3/3) ...
[2022-01-10 02:59:21,331 INFO  L111   eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound1.c
[2022-01-10 02:59:21,335 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 02:59:21,335 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 02:59:21,374 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 02:59:21,379 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
[2022-01-10 02:59:21,379 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 02:59:21,390 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-10 02:59:21,392 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-10 02:59:21,393 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:59:21,393 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 02:59:21,393 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:59:21,397 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:59:21,397 INFO  L85        PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times
[2022-01-10 02:59:21,407 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 02:59:21,407 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939439536]
[2022-01-10 02:59:21,407 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 02:59:21,408 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 02:59:21,408 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 02:59:21,411 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 02:59:21,417 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2022-01-10 02:59:21,648 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 02:59:21,663 INFO  L263         TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-01-10 02:59:21,671 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 02:59:22,059 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:59:22,059 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 02:59:22,060 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 02:59:22,060 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939439536]
[2022-01-10 02:59:22,061 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [939439536] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 02:59:22,061 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 02:59:22,061 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-10 02:59:22,063 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676640629]
[2022-01-10 02:59:22,064 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 02:59:22,067 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 02:59:22,068 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 02:59:22,086 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 02:59:22,087 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-01-10 02:59:22,088 INFO  L87              Difference]: Start difference. First operand  has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:59:22,863 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 02:59:22,863 INFO  L93              Difference]: Finished difference Result 54 states and 73 transitions.
[2022-01-10 02:59:22,865 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 02:59:22,866 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2022-01-10 02:59:22,866 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 02:59:22,872 INFO  L225             Difference]: With dead ends: 54
[2022-01-10 02:59:22,872 INFO  L226             Difference]: Without dead ends: 25
[2022-01-10 02:59:22,874 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-01-10 02:59:22,877 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-10 02:59:22,877 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 70 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-10 02:59:22,889 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-10 02:59:22,903 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24.
[2022-01-10 02:59:22,904 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-10 02:59:22,905 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions.
[2022-01-10 02:59:22,905 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8
[2022-01-10 02:59:22,906 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 02:59:22,906 INFO  L470      AbstractCegarLoop]: Abstraction has 24 states and 27 transitions.
[2022-01-10 02:59:22,906 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:59:22,906 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions.
[2022-01-10 02:59:22,907 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-01-10 02:59:22,907 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:59:22,907 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 02:59:22,921 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2022-01-10 02:59:23,118 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 02:59:23,119 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:59:23,119 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:59:23,119 INFO  L85        PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times
[2022-01-10 02:59:23,120 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 02:59:23,120 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567634828]
[2022-01-10 02:59:23,120 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 02:59:23,120 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 02:59:23,121 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 02:59:23,122 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 02:59:23,124 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2022-01-10 02:59:23,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 02:59:23,233 INFO  L263         TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-01-10 02:59:23,235 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 02:59:23,306 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:59:23,307 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 02:59:23,409 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:59:23,410 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 02:59:23,410 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567634828]
[2022-01-10 02:59:23,411 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567634828] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 02:59:23,411 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 02:59:23,411 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8
[2022-01-10 02:59:23,412 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102859027]
[2022-01-10 02:59:23,415 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 02:59:23,417 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-10 02:59:23,419 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 02:59:23,420 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-10 02:59:23,422 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-01-10 02:59:23,422 INFO  L87              Difference]: Start difference. First operand 24 states and 27 transitions. Second operand  has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-10 02:59:23,591 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 02:59:23,591 INFO  L93              Difference]: Finished difference Result 36 states and 40 transitions.
[2022-01-10 02:59:23,593 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 02:59:23,593 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18
[2022-01-10 02:59:23,594 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 02:59:23,594 INFO  L225             Difference]: With dead ends: 36
[2022-01-10 02:59:23,594 INFO  L226             Difference]: Without dead ends: 20
[2022-01-10 02:59:23,595 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2022-01-10 02:59:23,596 INFO  L933         BasicCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 02:59:23,596 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 48 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 02:59:23,597 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-10 02:59:23,600 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-01-10 02:59:23,600 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-10 02:59:23,600 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions.
[2022-01-10 02:59:23,601 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18
[2022-01-10 02:59:23,601 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 02:59:23,601 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 20 transitions.
[2022-01-10 02:59:23,601 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-10 02:59:23,601 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions.
[2022-01-10 02:59:23,602 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-10 02:59:23,602 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:59:23,602 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 02:59:23,617 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2022-01-10 02:59:23,807 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 02:59:23,808 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:59:23,808 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:59:23,808 INFO  L85        PathProgramCache]: Analyzing trace with hash 606185, now seen corresponding path program 1 times
[2022-01-10 02:59:23,809 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 02:59:23,809 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293585818]
[2022-01-10 02:59:23,809 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 02:59:23,809 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 02:59:23,809 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 02:59:23,810 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 02:59:23,812 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2022-01-10 02:59:26,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 02:59:26,364 INFO  L263         TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core
[2022-01-10 02:59:26,367 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 02:59:27,663 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:59:27,663 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:00:07,462 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 03:00:07,463 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:00:07,463 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293585818]
[2022-01-10 03:00:07,463 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [293585818] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 03:00:07,465 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 03:00:07,465 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21
[2022-01-10 03:00:07,465 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522741238]
[2022-01-10 03:00:07,465 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 03:00:07,466 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-01-10 03:00:07,467 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:00:07,468 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-01-10 03:00:07,468 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420
[2022-01-10 03:00:07,468 INFO  L87              Difference]: Start difference. First operand 20 states and 20 transitions. Second operand  has 21 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 19 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-10 03:00:28,740 WARN  L228               SmtUtils]: Spent 6.90s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-10 03:00:33,042 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:00:34,849 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 03:00:35,836 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:00:35,836 INFO  L93              Difference]: Finished difference Result 29 states and 28 transitions.
[2022-01-10 03:00:35,854 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2022-01-10 03:00:35,854 INFO  L78                 Accepts]: Start accepts. Automaton has  has 21 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 19 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19
[2022-01-10 03:00:35,854 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:00:35,855 INFO  L225             Difference]: With dead ends: 29
[2022-01-10 03:00:35,855 INFO  L226             Difference]: Without dead ends: 20
[2022-01-10 03:00:35,856 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 46.0s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650
[2022-01-10 03:00:35,856 INFO  L933         BasicCegarLoop]: 9 mSDtfsCounter, 30 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time
[2022-01-10 03:00:35,857 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 88 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time]
[2022-01-10 03:00:35,857 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-10 03:00:35,860 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-01-10 03:00:35,860 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 16 states have (on average 1.0) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-10 03:00:35,861 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions.
[2022-01-10 03:00:35,861 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 19
[2022-01-10 03:00:35,861 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:00:35,861 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 19 transitions.
[2022-01-10 03:00:35,862 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 21 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 19 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-10 03:00:35,862 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions.
[2022-01-10 03:00:35,862 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-10 03:00:35,862 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:00:35,862 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:00:35,879 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2022-01-10 03:00:36,069 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 03:00:36,070 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:00:36,070 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:00:36,070 INFO  L85        PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times
[2022-01-10 03:00:36,070 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:00:36,071 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005662446]
[2022-01-10 03:00:36,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:00:36,071 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:00:36,071 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:00:36,072 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:00:36,073 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2022-01-10 03:00:36,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-01-10 03:00:36,237 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-01-10 03:00:36,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-01-10 03:00:36,424 INFO  L133   FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2022-01-10 03:00:36,424 INFO  L628         BasicCegarLoop]: Counterexample is feasible
[2022-01-10 03:00:36,425 INFO  L764   garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-01-10 03:00:36,442 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2022-01-10 03:00:36,627 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 03:00:36,630 INFO  L732         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2022-01-10 03:00:36,632 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2022-01-10 03:00:36,654 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:00:36 BoogieIcfgContainer
[2022-01-10 03:00:36,654 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-01-10 03:00:36,654 INFO  L158              Benchmark]: Toolchain (without parser) took 76173.78ms. Allocated memory was 177.2MB in the beginning and 225.4MB in the end (delta: 48.2MB). Free memory was 119.7MB in the beginning and 131.6MB in the end (delta: -11.9MB). Peak memory consumption was 38.0MB. Max. memory is 8.0GB.
[2022-01-10 03:00:36,655 INFO  L158              Benchmark]: CDTParser took 0.51ms. Allocated memory is still 177.2MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-01-10 03:00:36,656 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 299.08ms. Allocated memory was 177.2MB in the beginning and 225.4MB in the end (delta: 48.2MB). Free memory was 119.4MB in the beginning and 196.4MB in the end (delta: -77.0MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB.
[2022-01-10 03:00:36,656 INFO  L158              Benchmark]: Boogie Procedure Inliner took 30.89ms. Allocated memory is still 225.4MB. Free memory was 196.4MB in the beginning and 194.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-01-10 03:00:36,656 INFO  L158              Benchmark]: Boogie Preprocessor took 33.65ms. Allocated memory is still 225.4MB. Free memory was 194.8MB in the beginning and 193.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-01-10 03:00:36,657 INFO  L158              Benchmark]: RCFGBuilder took 474.70ms. Allocated memory is still 225.4MB. Free memory was 193.8MB in the beginning and 182.2MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
[2022-01-10 03:00:36,657 INFO  L158              Benchmark]: TraceAbstraction took 75330.81ms. Allocated memory is still 225.4MB. Free memory was 181.7MB in the beginning and 131.6MB in the end (delta: 50.2MB). Peak memory consumption was 51.2MB. Max. memory is 8.0GB.
[2022-01-10 03:00:36,661 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.51ms. Allocated memory is still 177.2MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 299.08ms. Allocated memory was 177.2MB in the beginning and 225.4MB in the end (delta: 48.2MB). Free memory was 119.4MB in the beginning and 196.4MB in the end (delta: -77.0MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 30.89ms. Allocated memory is still 225.4MB. Free memory was 196.4MB in the beginning and 194.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 33.65ms. Allocated memory is still 225.4MB. Free memory was 194.8MB in the beginning and 193.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
 * RCFGBuilder took 474.70ms. Allocated memory is still 225.4MB. Free memory was 193.8MB in the beginning and 182.2MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
 * TraceAbstraction took 75330.81ms. Allocated memory is still 225.4MB. Free memory was 181.7MB in the beginning and 131.6MB in the end (delta: 50.2MB). Peak memory consumption was 51.2MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 16]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L21]              int counter = 0;
       VAL         [counter=0]
[L23]              int X, Y;
[L24]              long long x, y, v, xy, yx;
[L25]              X = __VERIFIER_nondet_int()
[L26]              Y = __VERIFIER_nondet_int()
[L27]              v = ((long long) 2 * Y) - X
[L28]              y = 0
[L29]              x = 0
       VAL         [counter=0, v=1073741825, x=0, X=1073741825, y=0, Y=1073741825]
[L31]  EXPR        counter++
       VAL         [counter=1, counter++=0, v=1073741825, X=1073741825, x=0, y=0, Y=1073741825]
[L31]  COND TRUE   counter++<1
[L32]              yx = (long long) Y*x
[L33]              xy = (long long) X*y
       VAL         [counter=1, v=1073741825, X=1073741825, x=0, x=0, x=0, y=0, Y=1073741825]
[L34]  CALL        __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0)
       VAL         [\old(cond)=1, counter=1]
[L14]  COND FALSE  !(!(cond))
       VAL         [\old(cond)=1, cond=1, counter=1]
[L34]  RET         __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0)
       VAL         [counter=1, v=1073741825, X=1073741825, x=0, x=0, x=0, y=0, Y=1073741825]
[L35]  COND FALSE  !(!(x <= X))
       VAL         [counter=1, v=1073741825, x=0, x=0, x=0, X=1073741825, y=0, Y=1073741825]
[L39]  COND FALSE  !(v < 0)
[L42]              v = v + 2 * ((long long) Y - X)
[L43]              y++
       VAL         [counter=1, v=1073741825, x=0, X=1073741825, x=0, x=0, y=1, Y=1073741825]
[L45]              x++
       VAL         [counter=1, v=1073741825, X=1073741825, x=0, x=1, x=0, y=1, Y=1073741825]
[L31]  EXPR        counter++
       VAL         [counter=2, counter++=1, v=1073741825, x=1, x=0, x=0, X=1073741825, Y=1073741825, y=1]
[L31]  COND FALSE  !(counter++<1)
[L47]              xy = (long long) x*y
[L48]              yx = (long long) Y*x
       VAL         [counter=2, v=1073741825, x=1, X=1073741825, x=1, x=1073741825, y=1, Y=1073741825]
[L49]  CALL        __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0)
       VAL         [\old(cond)=0, counter=2]
[L14]  COND TRUE   !(cond)
       VAL         [\old(cond)=0, cond=0, counter=2]
[L16]              reach_error()
       VAL         [\old(cond)=0, cond=0, counter=2]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 75.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 29.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 13.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 206 SdHoareTripleChecker+Invalid, 13.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 166 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 173 IncrementalHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 40 mSDtfsCounter, 173 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 46.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=1, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 41.7s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 888 SizeOfPredicates, 9 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2022-01-10 03:00:36,715 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...