/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/ps5-ll_valuebound10.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 03:31:02,517 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 03:31:02,519 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 03:31:02,584 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 03:31:02,584 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 03:31:02,585 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 03:31:02,586 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 03:31:02,587 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 03:31:02,588 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 03:31:02,589 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 03:31:02,590 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 03:31:02,590 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 03:31:02,595 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 03:31:02,599 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 03:31:02,601 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 03:31:02,602 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 03:31:02,604 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 03:31:02,605 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 03:31:02,606 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 03:31:02,610 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 03:31:02,611 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 03:31:02,613 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 03:31:02,614 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 03:31:02,618 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 03:31:02,618 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 03:31:02,618 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 03:31:02,619 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 03:31:02,619 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 03:31:02,620 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 03:31:02,620 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 03:31:02,620 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 03:31:02,621 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 03:31:02,621 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 03:31:02,622 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 03:31:02,622 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 03:31:02,622 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 03:31:02,622 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 03:31:02,622 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 03:31:02,623 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 03:31:02,623 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 03:31:02,628 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 03:31:02,651 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 03:31:02,651 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 03:31:02,651 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 03:31:02,652 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 03:31:02,652 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 03:31:02,652 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 03:31:02,653 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 03:31:02,653 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 03:31:02,653 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 03:31:02,653 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 03:31:02,653 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 03:31:02,653 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 03:31:02,654 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 03:31:02,654 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 03:31:02,654 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 03:31:02,654 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 03:31:02,654 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 03:31:02,654 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 03:31:02,654 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 03:31:02,654 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 03:31:02,654 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 03:31:02,654 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 03:31:02,654 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 03:31:02,654 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:31:02,655 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 03:31:02,655 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 03:31:02,655 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 03:31:02,656 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 03:31:02,656 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 03:31:02,656 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 03:31:02,656 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 03:31:02,656 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 03:31:02,656 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 03:31:02,656 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 03:31:02,826 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 03:31:02,845 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 03:31:02,847 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 03:31:02,848 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 03:31:02,848 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 03:31:02,849 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound10.c
[2022-01-10 03:31:02,890 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edd8d4ab6/0f6675b6a20546809d48b12279de5a8e/FLAG4af70392b
[2022-01-10 03:31:03,247 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 03:31:03,247 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound10.c
[2022-01-10 03:31:03,251 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edd8d4ab6/0f6675b6a20546809d48b12279de5a8e/FLAG4af70392b
[2022-01-10 03:31:03,259 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edd8d4ab6/0f6675b6a20546809d48b12279de5a8e
[2022-01-10 03:31:03,260 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 03:31:03,261 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 03:31:03,263 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 03:31:03,263 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 03:31:03,265 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 03:31:03,266 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,266 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e54a527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03, skipping insertion in model container
[2022-01-10 03:31:03,266 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,271 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 03:31:03,283 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 03:31:03,433 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/ps5-ll_valuebound10.c[458,471]
[2022-01-10 03:31:03,457 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:31:03,465 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 03:31:03,474 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/ps5-ll_valuebound10.c[458,471]
[2022-01-10 03:31:03,493 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 03:31:03,502 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 03:31:03,503 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03 WrapperNode
[2022-01-10 03:31:03,503 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 03:31:03,506 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 03:31:03,506 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 03:31:03,506 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 03:31:03,511 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,517 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,530 INFO  L137                Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35
[2022-01-10 03:31:03,531 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 03:31:03,531 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 03:31:03,532 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 03:31:03,532 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 03:31:03,537 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,538 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,546 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,546 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,557 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,559 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,560 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,561 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 03:31:03,562 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 03:31:03,562 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 03:31:03,562 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 03:31:03,564 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03" (1/1) ...
[2022-01-10 03:31:03,570 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 03:31:03,578 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 03:31:03,616 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 03:31:03,636 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 03:31:03,646 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 03:31:03,646 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 03:31:03,646 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-01-10 03:31:03,646 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-01-10 03:31:03,646 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 03:31:03,646 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 03:31:03,646 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-10 03:31:03,647 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-10 03:31:03,689 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 03:31:03,690 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 03:31:04,029 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 03:31:04,034 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 03:31:04,034 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 03:31:04,040 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:31:04 BoogieIcfgContainer
[2022-01-10 03:31:04,040 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 03:31:04,041 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 03:31:04,041 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 03:31:04,044 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 03:31:04,044 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:31:03" (1/3) ...
[2022-01-10 03:31:04,045 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b270615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:31:04, skipping insertion in model container
[2022-01-10 03:31:04,045 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:31:03" (2/3) ...
[2022-01-10 03:31:04,045 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b270615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:31:04, skipping insertion in model container
[2022-01-10 03:31:04,045 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:31:04" (3/3) ...
[2022-01-10 03:31:04,046 INFO  L111   eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound10.c
[2022-01-10 03:31:04,050 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 03:31:04,050 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 03:31:04,091 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 03:31:04,100 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 03:31:04,100 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 03:31:04,116 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-10 03:31:04,120 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-01-10 03:31:04,120 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:31:04,120 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:31:04,121 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:31:04,129 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:31:04,129 INFO  L85        PathProgramCache]: Analyzing trace with hash 1845349065, now seen corresponding path program 1 times
[2022-01-10 03:31:04,137 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:31:04,137 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448158118]
[2022-01-10 03:31:04,137 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:31:04,138 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:31:04,138 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:31:04,148 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 03:31:04,153 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 03:31:04,290 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:31:04,309 INFO  L263         TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core
[2022-01-10 03:31:04,313 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:31:04,368 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-01-10 03:31:04,368 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 03:31:04,369 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:31:04,369 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448158118]
[2022-01-10 03:31:04,370 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448158118] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 03:31:04,370 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 03:31:04,370 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 03:31:04,371 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254239687]
[2022-01-10 03:31:04,372 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:31:04,375 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 03:31:04,376 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:31:04,394 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 03:31:04,395 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 03:31:04,397 INFO  L87              Difference]: Start difference. First operand  has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand  has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-01-10 03:31:04,408 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:31:04,408 INFO  L93              Difference]: Finished difference Result 45 states and 63 transitions.
[2022-01-10 03:31:04,409 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 03:31:04,410 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18
[2022-01-10 03:31:04,410 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:31:04,415 INFO  L225             Difference]: With dead ends: 45
[2022-01-10 03:31:04,417 INFO  L226             Difference]: Without dead ends: 20
[2022-01-10 03:31:04,420 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 03:31:04,423 INFO  L933         BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 03:31:04,424 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 03:31:04,434 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-10 03:31:04,446 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-01-10 03:31:04,447 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 03:31:04,449 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions.
[2022-01-10 03:31:04,450 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18
[2022-01-10 03:31:04,450 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:31:04,450 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 23 transitions.
[2022-01-10 03:31:04,451 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-01-10 03:31:04,451 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions.
[2022-01-10 03:31:04,452 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-01-10 03:31:04,452 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:31:04,453 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:31:04,469 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 03:31:04,665 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 03:31:04,668 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:31:04,668 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:31:04,669 INFO  L85        PathProgramCache]: Analyzing trace with hash 1506842435, now seen corresponding path program 1 times
[2022-01-10 03:31:04,669 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:31:04,669 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97695905]
[2022-01-10 03:31:04,669 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:31:04,669 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:31:04,670 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:31:04,670 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 03:31:04,672 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 03:31:04,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:31:04,834 INFO  L263         TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-01-10 03:31:04,836 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:31:04,945 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-01-10 03:31:04,945 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 03:31:04,945 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:31:04,946 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97695905]
[2022-01-10 03:31:04,946 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [97695905] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 03:31:04,946 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 03:31:04,946 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-10 03:31:04,946 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542428837]
[2022-01-10 03:31:04,946 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:31:04,947 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 03:31:04,947 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:31:04,948 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 03:31:04,948 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-01-10 03:31:04,948 INFO  L87              Difference]: Start difference. First operand 20 states and 23 transitions. Second operand  has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-01-10 03:31:06,102 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:31:06,102 INFO  L93              Difference]: Finished difference Result 31 states and 36 transitions.
[2022-01-10 03:31:06,116 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-10 03:31:06,117 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18
[2022-01-10 03:31:06,117 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:31:06,118 INFO  L225             Difference]: With dead ends: 31
[2022-01-10 03:31:06,118 INFO  L226             Difference]: Without dead ends: 27
[2022-01-10 03:31:06,118 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-01-10 03:31:06,119 INFO  L933         BasicCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2022-01-10 03:31:06,119 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 75 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2022-01-10 03:31:06,120 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2022-01-10 03:31:06,124 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2022-01-10 03:31:06,124 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-10 03:31:06,125 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions.
[2022-01-10 03:31:06,125 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18
[2022-01-10 03:31:06,125 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:31:06,125 INFO  L470      AbstractCegarLoop]: Abstraction has 27 states and 30 transitions.
[2022-01-10 03:31:06,126 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-01-10 03:31:06,126 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions.
[2022-01-10 03:31:06,126 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-01-10 03:31:06,126 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:31:06,126 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:31:06,138 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0
[2022-01-10 03:31:06,338 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 03:31:06,339 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:31:06,339 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:31:06,339 INFO  L85        PathProgramCache]: Analyzing trace with hash 903983968, now seen corresponding path program 1 times
[2022-01-10 03:31:06,340 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:31:06,340 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836465180]
[2022-01-10 03:31:06,340 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:31:06,340 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:31:06,340 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:31:06,341 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 03:31:06,343 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 03:31:06,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:31:06,691 INFO  L263         TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-10 03:31:06,694 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:31:09,172 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-01-10 03:31:09,172 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:31:24,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 03:31:24,246 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:31:24,246 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836465180]
[2022-01-10 03:31:24,246 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [836465180] provided 1 perfect and 1 imperfect interpolant sequences
[2022-01-10 03:31:24,246 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-10 03:31:24,246 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9
[2022-01-10 03:31:24,246 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194320874]
[2022-01-10 03:31:24,246 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 03:31:24,247 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 03:31:24,247 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:31:24,247 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 03:31:24,248 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2022-01-10 03:31:24,248 INFO  L87              Difference]: Start difference. First operand 27 states and 30 transitions. Second operand  has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-01-10 03:31:28,301 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:31:28,301 INFO  L93              Difference]: Finished difference Result 33 states and 35 transitions.
[2022-01-10 03:31:28,301 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 03:31:28,302 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25
[2022-01-10 03:31:28,302 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:31:28,302 INFO  L225             Difference]: With dead ends: 33
[2022-01-10 03:31:28,302 INFO  L226             Difference]: Without dead ends: 29
[2022-01-10 03:31:28,303 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2022-01-10 03:31:28,304 INFO  L933         BasicCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2022-01-10 03:31:28,304 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2022-01-10 03:31:28,304 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2022-01-10 03:31:28,308 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2022-01-10 03:31:28,308 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-10 03:31:28,309 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions.
[2022-01-10 03:31:28,309 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25
[2022-01-10 03:31:28,309 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:31:28,309 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 31 transitions.
[2022-01-10 03:31:28,309 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-01-10 03:31:28,310 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions.
[2022-01-10 03:31:28,310 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-01-10 03:31:28,310 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:31:28,310 INFO  L514         BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:31:28,328 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 03:31:28,511 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 03:31:28,511 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:31:28,512 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:31:28,512 INFO  L85        PathProgramCache]: Analyzing trace with hash -1648043046, now seen corresponding path program 1 times
[2022-01-10 03:31:28,512 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:31:28,512 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625246589]
[2022-01-10 03:31:28,512 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 03:31:28,512 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:31:28,513 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:31:28,513 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 03:31:28,515 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 03:31:28,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 03:31:28,877 INFO  L263         TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-01-10 03:31:28,879 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:31:29,763 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2022-01-10 03:31:29,763 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 03:31:42,460 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2022-01-10 03:31:42,461 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 03:31:42,461 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625246589]
[2022-01-10 03:31:42,461 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625246589] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 03:31:42,461 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 03:31:42,461 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15
[2022-01-10 03:31:42,461 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630981205]
[2022-01-10 03:31:42,461 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 03:31:42,462 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-10 03:31:42,462 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 03:31:42,462 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-10 03:31:42,464 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210
[2022-01-10 03:31:42,465 INFO  L87              Difference]: Start difference. First operand 29 states and 31 transitions. Second operand  has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10)
[2022-01-10 03:32:00,461 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 03:32:00,462 INFO  L93              Difference]: Finished difference Result 48 states and 57 transitions.
[2022-01-10 03:32:00,462 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2022-01-10 03:32:00,462 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 36
[2022-01-10 03:32:00,462 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 03:32:00,463 INFO  L225             Difference]: With dead ends: 48
[2022-01-10 03:32:00,463 INFO  L226             Difference]: Without dead ends: 40
[2022-01-10 03:32:00,464 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462
[2022-01-10 03:32:00,464 INFO  L933         BasicCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time
[2022-01-10 03:32:00,465 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 220 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time]
[2022-01-10 03:32:00,465 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2022-01-10 03:32:00,473 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38.
[2022-01-10 03:32:00,473 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 38 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-10 03:32:00,474 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions.
[2022-01-10 03:32:00,474 INFO  L78                 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 36
[2022-01-10 03:32:00,474 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 03:32:00,474 INFO  L470      AbstractCegarLoop]: Abstraction has 38 states and 43 transitions.
[2022-01-10 03:32:00,474 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10)
[2022-01-10 03:32:00,474 INFO  L276                IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions.
[2022-01-10 03:32:00,475 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2022-01-10 03:32:00,475 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 03:32:00,475 INFO  L514         BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 03:32:00,492 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 03:32:00,683 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 03:32:00,683 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 03:32:00,684 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 03:32:00,684 INFO  L85        PathProgramCache]: Analyzing trace with hash 1013596503, now seen corresponding path program 2 times
[2022-01-10 03:32:00,684 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 03:32:00,684 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878122209]
[2022-01-10 03:32:00,685 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 03:32:00,685 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 03:32:00,685 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 03:32:00,686 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 03:32:00,698 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2022-01-10 03:32:01,651 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 03:32:01,652 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 03:32:01,769 INFO  L263         TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core
[2022-01-10 03:32:01,772 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 03:32:03,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked.
[2022-01-10 03:32:03,322 INFO  L328         TraceCheckSpWp]: Computing backward predicates...