./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/loopv3.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version c3fed411
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/loopv3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dde080b2b1290163775d8fea1546e1b21e5d1f7776ff175b316d8ca2be5d0863
--- Real Ultimate output ---
This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41
[2021-12-17 10:30:26,322 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-12-17 10:30:26,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-17 10:30:26,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-17 10:30:26,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-17 10:30:26,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-17 10:30:26,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-17 10:30:26,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-17 10:30:26,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-17 10:30:26,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-17 10:30:26,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-12-17 10:30:26,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-17 10:30:26,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-17 10:30:26,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-17 10:30:26,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-17 10:30:26,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-17 10:30:26,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-17 10:30:26,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-17 10:30:26,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-17 10:30:26,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-17 10:30:26,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-17 10:30:26,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-17 10:30:26,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-12-17 10:30:26,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-17 10:30:26,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-17 10:30:26,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-17 10:30:26,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-17 10:30:26,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-17 10:30:26,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-17 10:30:26,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-17 10:30:26,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-17 10:30:26,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-17 10:30:26,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-17 10:30:26,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-17 10:30:26,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-17 10:30:26,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-17 10:30:26,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-17 10:30:26,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-17 10:30:26,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-17 10:30:26,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-17 10:30:26,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-12-17 10:30:26,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-17 10:30:26,456 INFO L113 SettingsManager]: Loading preferences was successful
[2021-12-17 10:30:26,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-17 10:30:26,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-17 10:30:26,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-17 10:30:26,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-17 10:30:26,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-17 10:30:26,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-17 10:30:26,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-12-17 10:30:26,458 INFO L138 SettingsManager]: * Use SBE=true
[2021-12-17 10:30:26,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-17 10:30:26,459 INFO L138 SettingsManager]: * sizeof long=4
[2021-12-17 10:30:26,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-12-17 10:30:26,459 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-12-17 10:30:26,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-12-17 10:30:26,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-12-17 10:30:26,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-17 10:30:26,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-12-17 10:30:26,460 INFO L138 SettingsManager]: * sizeof long double=12
[2021-12-17 10:30:26,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-12-17 10:30:26,460 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-12-17 10:30:26,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-12-17 10:30:26,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-17 10:30:26,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-12-17 10:30:26,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-12-17 10:30:26,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-17 10:30:26,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-17 10:30:26,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-12-17 10:30:26,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-17 10:30:26,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-12-17 10:30:26,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-17 10:30:26,462 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-12-17 10:30:26,462 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-17 10:30:26,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-17 10:30:26,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-12-17 10:30:26,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dde080b2b1290163775d8fea1546e1b21e5d1f7776ff175b316d8ca2be5d0863
[2021-12-17 10:30:26,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-17 10:30:26,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-17 10:30:26,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-17 10:30:26,700 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-12-17 10:30:26,701 INFO L275 PluginConnector]: CDTParser initialized
[2021-12-17 10:30:26,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/loopv3.c
[2021-12-17 10:30:26,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7949b9a01/a46310268749483290bdfa1511651c84/FLAG90b7ea375
[2021-12-17 10:30:27,045 INFO L306 CDTParser]: Found 1 translation units.
[2021-12-17 10:30:27,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/loopv3.c
[2021-12-17 10:30:27,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7949b9a01/a46310268749483290bdfa1511651c84/FLAG90b7ea375
[2021-12-17 10:30:27,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7949b9a01/a46310268749483290bdfa1511651c84
[2021-12-17 10:30:27,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-17 10:30:27,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-17 10:30:27,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-17 10:30:27,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-17 10:30:27,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-17 10:30:27,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c586258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27, skipping insertion in model container
[2021-12-17 10:30:27,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-12-17 10:30:27,548 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-12-17 10:30:27,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/loopv3.c[456,469]
[2021-12-17 10:30:27,677 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-12-17 10:30:27,682 INFO L203 MainTranslator]: Completed pre-run
[2021-12-17 10:30:27,690 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/loopv3.c[456,469]
[2021-12-17 10:30:27,692 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-12-17 10:30:27,701 INFO L208 MainTranslator]: Completed translation
[2021-12-17 10:30:27,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27 WrapperNode
[2021-12-17 10:30:27,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-17 10:30:27,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-17 10:30:27,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-17 10:30:27,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-17 10:30:27,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,721 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35
[2021-12-17 10:30:27,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-17 10:30:27,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-17 10:30:27,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-17 10:30:27,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-12-17 10:30:27,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-17 10:30:27,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-17 10:30:27,741 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-12-17 10:30:27,742 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-12-17 10:30:27,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27" (1/1) ...
[2021-12-17 10:30:27,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-17 10:30:27,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 10:30:27,763 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)
[2021-12-17 10:30:27,788 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
[2021-12-17 10:30:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-17 10:30:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-17 10:30:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-17 10:30:27,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-17 10:30:27,832 INFO L236 CfgBuilder]: Building ICFG
[2021-12-17 10:30:27,833 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-17 10:30:27,918 INFO L277 CfgBuilder]: Performing block encoding
[2021-12-17 10:30:27,922 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-17 10:30:27,922 INFO L301 CfgBuilder]: Removed 1 assume(true) statements.
[2021-12-17 10:30:27,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:30:27 BoogieIcfgContainer
[2021-12-17 10:30:27,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-17 10:30:27,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-17 10:30:27,924 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-12-17 10:30:27,927 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-12-17 10:30:27,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:30:27" (1/3) ...
[2021-12-17 10:30:27,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bd0fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:30:27, skipping insertion in model container
[2021-12-17 10:30:27,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:30:27" (2/3) ...
[2021-12-17 10:30:27,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54bd0fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:30:27, skipping insertion in model container
[2021-12-17 10:30:27,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:30:27" (3/3) ...
[2021-12-17 10:30:27,929 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv3.c
[2021-12-17 10:30:27,932 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-17 10:30:27,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-17 10:30:27,965 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-17 10:30:27,970 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
[2021-12-17 10:30:27,970 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-17 10:30:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-12-17 10:30:27,984 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 10:30:27,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-12-17 10:30:27,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 10:30:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 10:30:27,988 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times
[2021-12-17 10:30:27,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 10:30:27,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886306550]
[2021-12-17 10:30:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:27,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 10:30:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:28,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 10:30:28,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886306550]
[2021-12-17 10:30:28,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886306550] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-17 10:30:28,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-17 10:30:28,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-17 10:30:28,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658603456]
[2021-12-17 10:30:28,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-17 10:30:28,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-12-17 10:30:28,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 10:30:28,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-12-17 10:30:28,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-12-17 10:30:28,104 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 10:30:28,112 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions.
[2021-12-17 10:30:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-12-17 10:30:28,114 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2021-12-17 10:30:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 10:30:28,118 INFO L225 Difference]: With dead ends: 20
[2021-12-17 10:30:28,119 INFO L226 Difference]: Without dead ends: 8
[2021-12-17 10:30:28,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-12-17 10:30:28,124 INFO L933 BasicCegarLoop]: 13 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, 13 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
[2021-12-17 10:30:28,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-17 10:30:28,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2021-12-17 10:30:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2021-12-17 10:30:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions.
[2021-12-17 10:30:28,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6
[2021-12-17 10:30:28,145 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 10:30:28,145 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions.
[2021-12-17 10:30:28,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:28,146 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions.
[2021-12-17 10:30:28,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2021-12-17 10:30:28,146 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 10:30:28,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2021-12-17 10:30:28,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-17 10:30:28,147 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 10:30:28,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 10:30:28,148 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times
[2021-12-17 10:30:28,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 10:30:28,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256585659]
[2021-12-17 10:30:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:28,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 10:30:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:28,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 10:30:28,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256585659]
[2021-12-17 10:30:28,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256585659] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-17 10:30:28,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-17 10:30:28,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-17 10:30:28,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983817945]
[2021-12-17 10:30:28,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-17 10:30:28,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-17 10:30:28,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 10:30:28,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-17 10:30:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-17 10:30:28,226 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:28,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 10:30:28,240 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions.
[2021-12-17 10:30:28,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-12-17 10:30:28,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2021-12-17 10:30:28,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 10:30:28,242 INFO L225 Difference]: With dead ends: 14
[2021-12-17 10:30:28,242 INFO L226 Difference]: Without dead ends: 10
[2021-12-17 10:30:28,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-17 10:30:28,243 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-17 10:30:28,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-17 10:30:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2021-12-17 10:30:28,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2021-12-17 10:30:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions.
[2021-12-17 10:30:28,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6
[2021-12-17 10:30:28,247 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 10:30:28,247 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions.
[2021-12-17 10:30:28,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:28,247 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions.
[2021-12-17 10:30:28,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-12-17 10:30:28,247 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 10:30:28,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 10:30:28,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-17 10:30:28,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 10:30:28,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 10:30:28,249 INFO L85 PathProgramCache]: Analyzing trace with hash 297538966, now seen corresponding path program 1 times
[2021-12-17 10:30:28,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 10:30:28,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260109972]
[2021-12-17 10:30:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:28,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 10:30:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:28,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 10:30:28,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260109972]
[2021-12-17 10:30:28,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260109972] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-17 10:30:28,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768060721]
[2021-12-17 10:30:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:28,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:28,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 10:30:28,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-17 10:30:28,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-12-17 10:30:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:28,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-12-17 10:30:28,320 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 10:30:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:28,382 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 10:30:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:28,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768060721] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 10:30:28,464 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-12-17 10:30:28,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9
[2021-12-17 10:30:28,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598256320]
[2021-12-17 10:30:28,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-12-17 10:30:28,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-12-17 10:30:28,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 10:30:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-12-17 10:30:28,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90
[2021-12-17 10:30:28,466 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:28,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 10:30:28,519 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions.
[2021-12-17 10:30:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-12-17 10:30:28,519 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2021-12-17 10:30:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 10:30:28,520 INFO L225 Difference]: With dead ends: 19
[2021-12-17 10:30:28,520 INFO L226 Difference]: Without dead ends: 15
[2021-12-17 10:30:28,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132
[2021-12-17 10:30:28,521 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 18 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-17 10:30:28,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 9 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-17 10:30:28,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2021-12-17 10:30:28,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2021-12-17 10:30:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions.
[2021-12-17 10:30:28,524 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8
[2021-12-17 10:30:28,525 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 10:30:28,525 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions.
[2021-12-17 10:30:28,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions.
[2021-12-17 10:30:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-12-17 10:30:28,525 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 10:30:28,526 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1]
[2021-12-17 10:30:28,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-12-17 10:30:28,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:28,741 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 10:30:28,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 10:30:28,741 INFO L85 PathProgramCache]: Analyzing trace with hash 742440183, now seen corresponding path program 1 times
[2021-12-17 10:30:28,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 10:30:28,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036822351]
[2021-12-17 10:30:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:28,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 10:30:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:28,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 10:30:28,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036822351]
[2021-12-17 10:30:28,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036822351] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-17 10:30:28,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511668106]
[2021-12-17 10:30:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:28,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:28,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 10:30:28,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-17 10:30:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:28,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-12-17 10:30:28,923 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 10:30:28,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-12-17 10:30:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:29,050 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 10:30:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:29,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511668106] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 10:30:29,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-12-17 10:30:29,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12
[2021-12-17 10:30:29,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455870737]
[2021-12-17 10:30:29,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-12-17 10:30:29,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2021-12-17 10:30:29,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 10:30:29,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-12-17 10:30:29,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=89, Unknown=0, NotChecked=0, Total=156
[2021-12-17 10:30:29,108 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 10:30:29,186 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions.
[2021-12-17 10:30:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-12-17 10:30:29,186 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2021-12-17 10:30:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 10:30:29,187 INFO L225 Difference]: With dead ends: 29
[2021-12-17 10:30:29,187 INFO L226 Difference]: Without dead ends: 25
[2021-12-17 10:30:29,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=140, Unknown=0, NotChecked=0, Total=240
[2021-12-17 10:30:29,193 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 22 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-17 10:30:29,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 15 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-17 10:30:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2021-12-17 10:30:29,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19.
[2021-12-17 10:30:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions.
[2021-12-17 10:30:29,207 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 10
[2021-12-17 10:30:29,207 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 10:30:29,207 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions.
[2021-12-17 10:30:29,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:29,207 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions.
[2021-12-17 10:30:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-12-17 10:30:29,208 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 10:30:29,208 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1]
[2021-12-17 10:30:29,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-12-17 10:30:29,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2021-12-17 10:30:29,422 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 10:30:29,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 10:30:29,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1714863729, now seen corresponding path program 2 times
[2021-12-17 10:30:29,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 10:30:29,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921948476]
[2021-12-17 10:30:29,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:29,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 10:30:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:29,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 10:30:29,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921948476]
[2021-12-17 10:30:29,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921948476] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-17 10:30:29,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940040539]
[2021-12-17 10:30:29,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-12-17 10:30:29,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:29,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 10:30:29,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-17 10:30:29,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-12-17 10:30:29,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-12-17 10:30:29,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 10:30:29,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-12-17 10:30:29,653 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 10:30:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:29,778 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 10:30:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:29,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940040539] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 10:30:29,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-12-17 10:30:29,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24
[2021-12-17 10:30:29,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65616493]
[2021-12-17 10:30:29,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-12-17 10:30:29,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2021-12-17 10:30:29,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 10:30:29,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2021-12-17 10:30:29,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=341, Unknown=0, NotChecked=0, Total=600
[2021-12-17 10:30:29,899 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 10:30:30,037 INFO L93 Difference]: Finished difference Result 61 states and 91 transitions.
[2021-12-17 10:30:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2021-12-17 10:30:30,038 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18
[2021-12-17 10:30:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 10:30:30,039 INFO L225 Difference]: With dead ends: 61
[2021-12-17 10:30:30,039 INFO L226 Difference]: Without dead ends: 57
[2021-12-17 10:30:30,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=392, Invalid=600, Unknown=0, NotChecked=0, Total=992
[2021-12-17 10:30:30,040 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-12-17 10:30:30,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 13 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-12-17 10:30:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2021-12-17 10:30:30,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 35.
[2021-12-17 10:30:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions.
[2021-12-17 10:30:30,045 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 18
[2021-12-17 10:30:30,046 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 10:30:30,046 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions.
[2021-12-17 10:30:30,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions.
[2021-12-17 10:30:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-12-17 10:30:30,047 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 10:30:30,047 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1]
[2021-12-17 10:30:30,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-12-17 10:30:30,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:30,263 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 10:30:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 10:30:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 355037325, now seen corresponding path program 1 times
[2021-12-17 10:30:30,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 10:30:30,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250679633]
[2021-12-17 10:30:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:30,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 10:30:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:30,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 10:30:30,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250679633]
[2021-12-17 10:30:30,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250679633] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-17 10:30:30,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161025945]
[2021-12-17 10:30:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:30,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:30,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 10:30:30,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-17 10:30:30,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-12-17 10:30:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:30,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-12-17 10:30:30,447 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 10:30:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:30,609 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 10:30:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:30,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161025945] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 10:30:30,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-12-17 10:30:30,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30
[2021-12-17 10:30:30,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402167533]
[2021-12-17 10:30:30,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-12-17 10:30:30,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2021-12-17 10:30:30,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 10:30:30,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2021-12-17 10:30:30,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=527, Unknown=0, NotChecked=0, Total=930
[2021-12-17 10:30:30,749 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:30,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 10:30:30,948 INFO L93 Difference]: Finished difference Result 119 states and 179 transitions.
[2021-12-17 10:30:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2021-12-17 10:30:30,948 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2021-12-17 10:30:30,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 10:30:30,949 INFO L225 Difference]: With dead ends: 119
[2021-12-17 10:30:30,949 INFO L226 Difference]: Without dead ends: 115
[2021-12-17 10:30:30,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=610, Invalid=950, Unknown=0, NotChecked=0, Total=1560
[2021-12-17 10:30:30,950 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-12-17 10:30:30,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 15 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-12-17 10:30:30,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2021-12-17 10:30:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 43.
[2021-12-17 10:30:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 61 transitions.
[2021-12-17 10:30:30,956 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 61 transitions. Word has length 22
[2021-12-17 10:30:30,956 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 10:30:30,956 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 61 transitions.
[2021-12-17 10:30:30,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:30,957 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions.
[2021-12-17 10:30:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-12-17 10:30:30,957 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 10:30:30,957 INFO L514 BasicCegarLoop]: trace histogram [14, 10, 4, 1, 1, 1, 1, 1, 1]
[2021-12-17 10:30:30,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-12-17 10:30:31,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:31,158 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 10:30:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 10:30:31,158 INFO L85 PathProgramCache]: Analyzing trace with hash -294996049, now seen corresponding path program 2 times
[2021-12-17 10:30:31,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 10:30:31,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918027053]
[2021-12-17 10:30:31,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:31,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 10:30:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:31,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 10:30:31,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918027053]
[2021-12-17 10:30:31,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918027053] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-17 10:30:31,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588238308]
[2021-12-17 10:30:31,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-12-17 10:30:31,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:31,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 10:30:31,362 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-17 10:30:31,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-12-17 10:30:31,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-12-17 10:30:31,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 10:30:31,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 17 conjunts are in the unsatisfiable core
[2021-12-17 10:30:31,401 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 10:30:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:31,682 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 10:30:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:32,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588238308] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 10:30:32,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-12-17 10:30:32,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 48
[2021-12-17 10:30:32,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000013677]
[2021-12-17 10:30:32,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-12-17 10:30:32,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states
[2021-12-17 10:30:32,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 10:30:32,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2021-12-17 10:30:32,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=1325, Unknown=0, NotChecked=0, Total=2352
[2021-12-17 10:30:32,008 INFO L87 Difference]: Start difference. First operand 43 states and 61 transitions. Second operand has 49 states, 49 states have (on average 1.9387755102040816) internal successors, (95), 48 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:32,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 10:30:32,386 INFO L93 Difference]: Finished difference Result 265 states and 401 transitions.
[2021-12-17 10:30:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2021-12-17 10:30:32,386 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9387755102040816) internal successors, (95), 48 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34
[2021-12-17 10:30:32,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 10:30:32,388 INFO L225 Difference]: With dead ends: 265
[2021-12-17 10:30:32,388 INFO L226 Difference]: Without dead ends: 261
[2021-12-17 10:30:32,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1552, Invalid=2480, Unknown=0, NotChecked=0, Total=4032
[2021-12-17 10:30:32,389 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 85 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-12-17 10:30:32,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 11 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-12-17 10:30:32,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states.
[2021-12-17 10:30:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 67.
[2021-12-17 10:30:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 66 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:32,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 97 transitions.
[2021-12-17 10:30:32,406 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 97 transitions. Word has length 34
[2021-12-17 10:30:32,407 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 10:30:32,407 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 97 transitions.
[2021-12-17 10:30:32,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9387755102040816) internal successors, (95), 48 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:32,407 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 97 transitions.
[2021-12-17 10:30:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2021-12-17 10:30:32,409 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 10:30:32,409 INFO L514 BasicCegarLoop]: trace histogram [18, 12, 6, 1, 1, 1, 1, 1, 1]
[2021-12-17 10:30:32,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-12-17 10:30:32,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:32,636 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 10:30:32,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 10:30:32,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1645760435, now seen corresponding path program 3 times
[2021-12-17 10:30:32,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 10:30:32,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940653158]
[2021-12-17 10:30:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:32,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 10:30:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:32,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 10:30:32,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940653158]
[2021-12-17 10:30:32,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940653158] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-17 10:30:32,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988857673]
[2021-12-17 10:30:32,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-12-17 10:30:32,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:32,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 10:30:32,873 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-17 10:30:32,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-12-17 10:30:32,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s)
[2021-12-17 10:30:32,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 10:30:32,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-12-17 10:30:32,944 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 10:30:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:33,345 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 10:30:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:33,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988857673] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 10:30:33,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-12-17 10:30:33,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 60
[2021-12-17 10:30:33,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751890046]
[2021-12-17 10:30:33,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-12-17 10:30:33,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states
[2021-12-17 10:30:33,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 10:30:33,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants.
[2021-12-17 10:30:33,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=2057, Unknown=0, NotChecked=0, Total=3660
[2021-12-17 10:30:33,808 INFO L87 Difference]: Start difference. First operand 67 states and 97 transitions. Second operand has 61 states, 61 states have (on average 1.9508196721311475) internal successors, (119), 60 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:34,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 10:30:34,474 INFO L93 Difference]: Finished difference Result 509 states and 769 transitions.
[2021-12-17 10:30:34,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2021-12-17 10:30:34,475 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.9508196721311475) internal successors, (119), 60 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42
[2021-12-17 10:30:34,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 10:30:34,477 INFO L225 Difference]: With dead ends: 509
[2021-12-17 10:30:34,477 INFO L226 Difference]: Without dead ends: 505
[2021-12-17 10:30:34,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2201 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2420, Invalid=3900, Unknown=0, NotChecked=0, Total=6320
[2021-12-17 10:30:34,479 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 143 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2021-12-17 10:30:34,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 13 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2021-12-17 10:30:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states.
[2021-12-17 10:30:34,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 83.
[2021-12-17 10:30:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.475609756097561) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 121 transitions.
[2021-12-17 10:30:34,501 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 121 transitions. Word has length 42
[2021-12-17 10:30:34,502 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 10:30:34,502 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 121 transitions.
[2021-12-17 10:30:34,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.9508196721311475) internal successors, (119), 60 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:34,503 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 121 transitions.
[2021-12-17 10:30:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2021-12-17 10:30:34,506 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 10:30:34,507 INFO L514 BasicCegarLoop]: trace histogram [30, 22, 8, 1, 1, 1, 1, 1, 1]
[2021-12-17 10:30:34,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-12-17 10:30:34,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:34,722 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 10:30:34,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 10:30:34,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1585988105, now seen corresponding path program 4 times
[2021-12-17 10:30:34,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 10:30:34,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613864005]
[2021-12-17 10:30:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 10:30:34,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 10:30:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 10:30:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:35,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 10:30:35,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613864005]
[2021-12-17 10:30:35,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613864005] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-17 10:30:35,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299278293]
[2021-12-17 10:30:35,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-12-17 10:30:35,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:35,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 10:30:35,169 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-12-17 10:30:35,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-12-17 10:30:35,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-12-17 10:30:35,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 10:30:35,201 WARN L261 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 67 conjunts are in the unsatisfiable core
[2021-12-17 10:30:35,202 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 10:30:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 10:30:35,912 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 10:30:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked.
[2021-12-17 10:30:36,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299278293] provided 1 perfect and 1 imperfect interpolant sequences
[2021-12-17 10:30:36,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2021-12-17 10:30:36,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [33, 34] total 67
[2021-12-17 10:30:36,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930303695]
[2021-12-17 10:30:36,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-17 10:30:36,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-17 10:30:36,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 10:30:36,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-17 10:30:36,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=3792, Unknown=0, NotChecked=0, Total=4422
[2021-12-17 10:30:36,135 INFO L87 Difference]: Start difference. First operand 83 states and 121 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 10:30:36,173 INFO L93 Difference]: Finished difference Result 83 states and 121 transitions.
[2021-12-17 10:30:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-12-17 10:30:36,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66
[2021-12-17 10:30:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 10:30:36,174 INFO L225 Difference]: With dead ends: 83
[2021-12-17 10:30:36,174 INFO L226 Difference]: Without dead ends: 0
[2021-12-17 10:30:36,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=634, Invalid=3922, Unknown=0, NotChecked=0, Total=4556
[2021-12-17 10:30:36,176 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-17 10:30:36,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 5 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-17 10:30:36,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-12-17 10:30:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-12-17 10:30:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-12-17 10:30:36,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66
[2021-12-17 10:30:36,176 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 10:30:36,176 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-12-17 10:30:36,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-17 10:30:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-12-17 10:30:36,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-12-17 10:30:36,178 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-12-17 10:30:36,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2021-12-17 10:30:36,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 10:30:36,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-12-17 10:30:38,132 INFO L861 garLoopResultBuilder]: At program point L33(lines 20 34) the Hoare annotation is: true
[2021-12-17 10:30:38,132 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-12-17 10:30:38,132 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 28) no Hoare annotation was computed.
[2021-12-17 10:30:38,132 INFO L854 garLoopResultBuilder]: At program point L25-2(lines 23 30) the Hoare annotation is: (and (= 0 (mod |ULTIMATE.start_main_~i~0#1| 4)) (<= 50000001 ~SIZE~0))
[2021-12-17 10:30:38,132 INFO L858 garLoopResultBuilder]: For program point L23-2(lines 23 30) no Hoare annotation was computed.
[2021-12-17 10:30:38,132 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 15) no Hoare annotation was computed.
[2021-12-17 10:30:38,132 INFO L861 garLoopResultBuilder]: At program point L13-2(lines 12 17) the Hoare annotation is: true
[2021-12-17 10:30:38,132 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-12-17 10:30:38,132 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-12-17 10:30:38,133 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-12-17 10:30:38,133 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed.
[2021-12-17 10:30:38,133 INFO L858 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed.
[2021-12-17 10:30:38,135 INFO L732 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1]
[2021-12-17 10:30:38,135 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-12-17 10:30:38,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:30:38 BoogieIcfgContainer
[2021-12-17 10:30:38,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-12-17 10:30:38,144 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-12-17 10:30:38,144 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-12-17 10:30:38,145 INFO L275 PluginConnector]: Witness Printer initialized
[2021-12-17 10:30:38,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:30:27" (3/4) ...
[2021-12-17 10:30:38,147 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-12-17 10:30:38,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges
[2021-12-17 10:30:38,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2021-12-17 10:30:38,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-12-17 10:30:38,153 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-12-17 10:30:38,168 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2021-12-17 10:30:38,169 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-12-17 10:30:38,169 INFO L158 Benchmark]: Toolchain (without parser) took 10653.24ms. Allocated memory was 113.2MB in the beginning and 251.7MB in the end (delta: 138.4MB). Free memory was 76.4MB in the beginning and 157.2MB in the end (delta: -80.8MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB.
[2021-12-17 10:30:38,169 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 113.2MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-12-17 10:30:38,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.69ms. Allocated memory is still 113.2MB. Free memory was 76.3MB in the beginning and 88.7MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-12-17 10:30:38,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.81ms. Allocated memory is still 113.2MB. Free memory was 88.7MB in the beginning and 87.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-12-17 10:30:38,170 INFO L158 Benchmark]: Boogie Preprocessor took 17.84ms. Allocated memory is still 113.2MB. Free memory was 87.3MB in the beginning and 86.6MB in the end (delta: 752.4kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-12-17 10:30:38,170 INFO L158 Benchmark]: RCFGBuilder took 182.30ms. Allocated memory is still 113.2MB. Free memory was 86.2MB in the beginning and 77.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-12-17 10:30:38,171 INFO L158 Benchmark]: TraceAbstraction took 10219.93ms. Allocated memory was 113.2MB in the beginning and 251.7MB in the end (delta: 138.4MB). Free memory was 77.2MB in the beginning and 159.3MB in the end (delta: -82.1MB). Peak memory consumption was 141.7MB. Max. memory is 16.1GB.
[2021-12-17 10:30:38,171 INFO L158 Benchmark]: Witness Printer took 24.34ms. Allocated memory is still 251.7MB. Free memory was 159.3MB in the beginning and 157.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-12-17 10:30:38,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.09ms. Allocated memory is still 113.2MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 172.69ms. Allocated memory is still 113.2MB. Free memory was 76.3MB in the beginning and 88.7MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 18.81ms. Allocated memory is still 113.2MB. Free memory was 88.7MB in the beginning and 87.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 17.84ms. Allocated memory is still 113.2MB. Free memory was 87.3MB in the beginning and 86.6MB in the end (delta: 752.4kB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 182.30ms. Allocated memory is still 113.2MB. Free memory was 86.2MB in the beginning and 77.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 10219.93ms. Allocated memory was 113.2MB in the beginning and 251.7MB in the end (delta: 138.4MB). Free memory was 77.2MB in the beginning and 159.3MB in the end (delta: -82.1MB). Peak memory consumption was 141.7MB. Max. memory is 16.1GB.
* Witness Printer took 24.34ms. Allocated memory is still 251.7MB. Free memory was 159.3MB in the beginning and 157.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* 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
- PositiveResult [Line: 14]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.2s, OverallIterations: 9, TraceHistogramMax: 30, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 361 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 361 mSDsluCounter, 101 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 764 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 495 IncrementalHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 764 mSolverCounterUnsat, 50 mSDtfsCounter, 495 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 548 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5581 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=8, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 717 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 11 HoareAnnotationTreeSize, 3 FomulaSimplifications, 24375 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 3 FomulaSimplificationsInter, 17621 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 412 NumberOfCodeBlocks, 381 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 589 ConstructedInterpolants, 0 QuantifiedInterpolants, 2727 SizeOfPredicates, 15 NumberOfNonLiveVariables, 693 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 23 InterpolantComputations, 3 PerfectInterpolantSequences, 900/4575 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
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 23]: Loop Invariant
Derived loop invariant: 0 == i % 4 && 50000001 <= SIZE
- InvariantResult [Line: 12]: Loop Invariant
Derived loop invariant: 1
- InvariantResult [Line: 20]: Loop Invariant
Derived loop invariant: 1
RESULT: Ultimate proved your program to be correct!
[2021-12-17 10:30:38,197 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...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE