./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 839c364b
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/array-examples/data_structures_set_multi_proc_trivial_ground.i -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 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7
--- Real Ultimate output ---
This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364
[2021-12-14 11:06:54,686 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-12-14 11:06:54,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-14 11:06:54,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-14 11:06:54,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-14 11:06:54,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-14 11:06:54,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-14 11:06:54,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-14 11:06:54,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-14 11:06:54,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-14 11:06:54,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-12-14 11:06:54,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-14 11:06:54,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-14 11:06:54,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-14 11:06:54,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-14 11:06:54,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-14 11:06:54,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-14 11:06:54,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-14 11:06:54,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-14 11:06:54,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-14 11:06:54,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-14 11:06:54,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-14 11:06:54,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-12-14 11:06:54,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-14 11:06:54,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-14 11:06:54,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-14 11:06:54,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-14 11:06:54,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-14 11:06:54,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-14 11:06:54,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-14 11:06:54,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-14 11:06:54,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-14 11:06:54,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-14 11:06:54,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-14 11:06:54,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-14 11:06:54,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-14 11:06:54,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-14 11:06:54,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-14 11:06:54,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-14 11:06:54,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-14 11:06:54,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-12-14 11:06:54,794 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-14 11:06:54,825 INFO L113 SettingsManager]: Loading preferences was successful
[2021-12-14 11:06:54,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-14 11:06:54,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-14 11:06:54,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-14 11:06:54,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-14 11:06:54,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-14 11:06:54,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-14 11:06:54,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-12-14 11:06:54,829 INFO L138 SettingsManager]: * Use SBE=true
[2021-12-14 11:06:54,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-14 11:06:54,830 INFO L138 SettingsManager]: * sizeof long=4
[2021-12-14 11:06:54,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-12-14 11:06:54,830 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-12-14 11:06:54,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-12-14 11:06:54,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-12-14 11:06:54,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-14 11:06:54,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-12-14 11:06:54,831 INFO L138 SettingsManager]: * sizeof long double=12
[2021-12-14 11:06:54,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-12-14 11:06:54,832 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-12-14 11:06:54,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-12-14 11:06:54,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-14 11:06:54,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-12-14 11:06:54,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-12-14 11:06:54,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-14 11:06:54,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-14 11:06:54,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-12-14 11:06:54,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-14 11:06:54,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-12-14 11:06:54,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-14 11:06:54,835 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-12-14 11:06:54,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-14 11:06:54,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-14 11:06:54,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-12-14 11:06:54,836 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7
[2021-12-14 11:06:55,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-14 11:06:55,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-14 11:06:55,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-14 11:06:55,076 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-12-14 11:06:55,076 INFO L275 PluginConnector]: CDTParser initialized
[2021-12-14 11:06:55,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i
[2021-12-14 11:06:55,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c150ec31a/5fa3a8024b97463682c09041f1e6dd06/FLAG64538decf
[2021-12-14 11:06:55,458 INFO L306 CDTParser]: Found 1 translation units.
[2021-12-14 11:06:55,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i
[2021-12-14 11:06:55,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c150ec31a/5fa3a8024b97463682c09041f1e6dd06/FLAG64538decf
[2021-12-14 11:06:55,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c150ec31a/5fa3a8024b97463682c09041f1e6dd06
[2021-12-14 11:06:55,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-14 11:06:55,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-14 11:06:55,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-14 11:06:55,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-14 11:06:55,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-14 11:06:55,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:06:55" (1/1) ...
[2021-12-14 11:06:55,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1696e68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:55, skipping insertion in model container
[2021-12-14 11:06:55,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:06:55" (1/1) ...
[2021-12-14 11:06:55,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-12-14 11:06:55,927 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-12-14 11:06:56,061 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/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851]
[2021-12-14 11:06:56,084 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-12-14 11:06:56,093 INFO L203 MainTranslator]: Completed pre-run
[2021-12-14 11:06:56,104 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/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851]
[2021-12-14 11:06:56,120 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-12-14 11:06:56,139 INFO L208 MainTranslator]: Completed translation
[2021-12-14 11:06:56,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56 WrapperNode
[2021-12-14 11:06:56,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-14 11:06:56,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-14 11:06:56,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-14 11:06:56,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-14 11:06:56,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56" (1/1) ...
[2021-12-14 11:06:56,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56" (1/1) ...
[2021-12-14 11:06:56,173 INFO L137 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 158
[2021-12-14 11:06:56,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-14 11:06:56,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-14 11:06:56,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-14 11:06:56,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-12-14 11:06:56,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56" (1/1) ...
[2021-12-14 11:06:56,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56" (1/1) ...
[2021-12-14 11:06:56,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56" (1/1) ...
[2021-12-14 11:06:56,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56" (1/1) ...
[2021-12-14 11:06:56,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56" (1/1) ...
[2021-12-14 11:06:56,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56" (1/1) ...
[2021-12-14 11:06:56,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56" (1/1) ...
[2021-12-14 11:06:56,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-14 11:06:56,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-14 11:06:56,201 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-12-14 11:06:56,201 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-12-14 11:06:56,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56" (1/1) ...
[2021-12-14 11:06:56,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-14 11:06:56,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-14 11:06:56,248 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)
[2021-12-14 11:06:56,251 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
[2021-12-14 11:06:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-14 11:06:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-14 11:06:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-12-14 11:06:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-12-14 11:06:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-14 11:06:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-14 11:06:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-12-14 11:06:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-12-14 11:06:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-12-14 11:06:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-12-14 11:06:56,366 INFO L236 CfgBuilder]: Building ICFG
[2021-12-14 11:06:56,368 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-14 11:06:56,581 INFO L277 CfgBuilder]: Performing block encoding
[2021-12-14 11:06:56,586 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-14 11:06:56,586 INFO L301 CfgBuilder]: Removed 10 assume(true) statements.
[2021-12-14 11:06:56,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:06:56 BoogieIcfgContainer
[2021-12-14 11:06:56,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-14 11:06:56,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-14 11:06:56,590 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-12-14 11:06:56,593 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-12-14 11:06:56,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:06:55" (1/3) ...
[2021-12-14 11:06:56,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a592ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:06:56, skipping insertion in model container
[2021-12-14 11:06:56,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:06:56" (2/3) ...
[2021-12-14 11:06:56,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a592ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:06:56, skipping insertion in model container
[2021-12-14 11:06:56,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:06:56" (3/3) ...
[2021-12-14 11:06:56,595 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i
[2021-12-14 11:06:56,598 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-14 11:06:56,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-14 11:06:56,637 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-14 11:06:56,642 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
[2021-12-14 11:06:56,642 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-14 11:06:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-12-14 11:06:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-12-14 11:06:56,669 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-14 11:06:56,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-14 11:06:56,670 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-14 11:06:56,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-14 11:06:56,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1977750346, now seen corresponding path program 1 times
[2021-12-14 11:06:56,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-14 11:06:56,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165337162]
[2021-12-14 11:06:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-14 11:06:56,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-14 11:06:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-14 11:06:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-14 11:06:56,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-14 11:06:56,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165337162]
[2021-12-14 11:06:56,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165337162] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-14 11:06:56,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-14 11:06:56,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-14 11:06:56,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657290911]
[2021-12-14 11:06:56,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-14 11:06:56,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-14 11:06:56,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-14 11:06:56,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-14 11:06:56,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-14 11:06:56,862 INFO L87 Difference]: Start difference. First operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:56,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-14 11:06:56,967 INFO L93 Difference]: Finished difference Result 131 states and 207 transitions.
[2021-12-14 11:06:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-12-14 11:06:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2021-12-14 11:06:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-14 11:06:56,978 INFO L225 Difference]: With dead ends: 131
[2021-12-14 11:06:56,978 INFO L226 Difference]: Without dead ends: 79
[2021-12-14 11:06:56,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-14 11:06:56,985 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 40 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-12-14 11:06:56,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 92 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-12-14 11:06:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2021-12-14 11:06:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 45.
[2021-12-14 11:06:57,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-12-14 11:06:57,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions.
[2021-12-14 11:06:57,033 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 10
[2021-12-14 11:06:57,033 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-14 11:06:57,033 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions.
[2021-12-14 11:06:57,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions.
[2021-12-14 11:06:57,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-12-14 11:06:57,036 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-14 11:06:57,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-14 11:06:57,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-14 11:06:57,038 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-14 11:06:57,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-14 11:06:57,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1322552780, now seen corresponding path program 1 times
[2021-12-14 11:06:57,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-14 11:06:57,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290764613]
[2021-12-14 11:06:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-14 11:06:57,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-14 11:06:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-14 11:06:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-14 11:06:57,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-14 11:06:57,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290764613]
[2021-12-14 11:06:57,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290764613] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-14 11:06:57,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168554626]
[2021-12-14 11:06:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-14 11:06:57,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-14 11:06:57,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-14 11:06:57,111 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)
[2021-12-14 11:06:57,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-12-14 11:06:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-14 11:06:57,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core
[2021-12-14 11:06:57,176 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-14 11:06:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-14 11:06:57,240 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-14 11:06:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-14 11:06:57,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168554626] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-14 11:06:57,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-12-14 11:06:57,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2021-12-14 11:06:57,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912306330]
[2021-12-14 11:06:57,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-12-14 11:06:57,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-12-14 11:06:57,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-14 11:06:57,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-12-14 11:06:57,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2021-12-14 11:06:57,301 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:57,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-14 11:06:57,444 INFO L93 Difference]: Finished difference Result 223 states and 303 transitions.
[2021-12-14 11:06:57,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-12-14 11:06:57,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12
[2021-12-14 11:06:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-14 11:06:57,447 INFO L225 Difference]: With dead ends: 223
[2021-12-14 11:06:57,447 INFO L226 Difference]: Without dead ends: 183
[2021-12-14 11:06:57,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2021-12-14 11:06:57,451 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 144 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-12-14 11:06:57,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 263 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-12-14 11:06:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states.
[2021-12-14 11:06:57,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 51.
[2021-12-14 11:06:57,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-12-14 11:06:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions.
[2021-12-14 11:06:57,472 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 12
[2021-12-14 11:06:57,472 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-14 11:06:57,473 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions.
[2021-12-14 11:06:57,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:57,473 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions.
[2021-12-14 11:06:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-12-14 11:06:57,474 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-14 11:06:57,474 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-14 11:06:57,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-12-14 11:06:57,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-14 11:06:57,699 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-14 11:06:57,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-14 11:06:57,700 INFO L85 PathProgramCache]: Analyzing trace with hash -201790894, now seen corresponding path program 2 times
[2021-12-14 11:06:57,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-14 11:06:57,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598680666]
[2021-12-14 11:06:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-14 11:06:57,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-14 11:06:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-14 11:06:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-12-14 11:06:57,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-14 11:06:57,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598680666]
[2021-12-14 11:06:57,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598680666] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-14 11:06:57,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-14 11:06:57,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-12-14 11:06:57,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727731331]
[2021-12-14 11:06:57,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-14 11:06:57,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-14 11:06:57,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-14 11:06:57,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-14 11:06:57,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-14 11:06:57,813 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:57,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-14 11:06:57,858 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions.
[2021-12-14 11:06:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-12-14 11:06:57,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18
[2021-12-14 11:06:57,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-14 11:06:57,860 INFO L225 Difference]: With dead ends: 98
[2021-12-14 11:06:57,860 INFO L226 Difference]: Without dead ends: 57
[2021-12-14 11:06:57,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-14 11:06:57,862 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-14 11:06:57,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 95 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-14 11:06:57,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2021-12-14 11:06:57,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56.
[2021-12-14 11:06:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.25) internal successors, (65), 52 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-12-14 11:06:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions.
[2021-12-14 11:06:57,874 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 18
[2021-12-14 11:06:57,875 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-14 11:06:57,875 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions.
[2021-12-14 11:06:57,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions.
[2021-12-14 11:06:57,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2021-12-14 11:06:57,876 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-14 11:06:57,876 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-14 11:06:57,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-12-14 11:06:57,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-14 11:06:57,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-14 11:06:57,877 INFO L85 PathProgramCache]: Analyzing trace with hash 8512802, now seen corresponding path program 1 times
[2021-12-14 11:06:57,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-14 11:06:57,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95505258]
[2021-12-14 11:06:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-14 11:06:57,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-14 11:06:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-14 11:06:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-12-14 11:06:57,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-14 11:06:57,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95505258]
[2021-12-14 11:06:57,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95505258] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-14 11:06:57,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-14 11:06:57,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-12-14 11:06:57,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037223374]
[2021-12-14 11:06:57,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-14 11:06:57,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-12-14 11:06:57,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-14 11:06:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-12-14 11:06:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-14 11:06:57,918 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:57,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-14 11:06:57,936 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions.
[2021-12-14 11:06:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-12-14 11:06:57,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29
[2021-12-14 11:06:57,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-14 11:06:57,938 INFO L225 Difference]: With dead ends: 117
[2021-12-14 11:06:57,938 INFO L226 Difference]: Without dead ends: 77
[2021-12-14 11:06:57,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-12-14 11:06:57,939 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 20 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-14 11:06:57,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 84 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-14 11:06:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2021-12-14 11:06:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57.
[2021-12-14 11:06:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-12-14 11:06:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions.
[2021-12-14 11:06:57,945 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 29
[2021-12-14 11:06:57,945 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-14 11:06:57,946 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions.
[2021-12-14 11:06:57,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions.
[2021-12-14 11:06:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2021-12-14 11:06:57,947 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-14 11:06:57,947 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-14 11:06:57,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-12-14 11:06:57,947 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-14 11:06:57,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-14 11:06:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash 383662240, now seen corresponding path program 1 times
[2021-12-14 11:06:57,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-14 11:06:57,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633146858]
[2021-12-14 11:06:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-14 11:06:57,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-14 11:06:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-14 11:06:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-12-14 11:06:58,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-14 11:06:58,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633146858]
[2021-12-14 11:06:58,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633146858] provided 0 perfect and 1 imperfect interpolant sequences
[2021-12-14 11:06:58,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706583403]
[2021-12-14 11:06:58,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-14 11:06:58,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-14 11:06:58,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-14 11:06:58,014 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)
[2021-12-14 11:06:58,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-12-14 11:06:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-14 11:06:58,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-12-14 11:06:58,082 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-14 11:06:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-12-14 11:06:58,170 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-14 11:06:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-12-14 11:06:58,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706583403] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-14 11:06:58,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-12-14 11:06:58,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14
[2021-12-14 11:06:58,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126977829]
[2021-12-14 11:06:58,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-12-14 11:06:58,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2021-12-14 11:06:58,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-14 11:06:58,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-12-14 11:06:58,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182
[2021-12-14 11:06:58,303 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:58,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-14 11:06:58,958 INFO L93 Difference]: Finished difference Result 623 states and 861 transitions.
[2021-12-14 11:06:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2021-12-14 11:06:58,959 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31
[2021-12-14 11:06:58,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-14 11:06:58,961 INFO L225 Difference]: With dead ends: 623
[2021-12-14 11:06:58,961 INFO L226 Difference]: Without dead ends: 577
[2021-12-14 11:06:58,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122
[2021-12-14 11:06:58,963 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 1127 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2021-12-14 11:06:58,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 428 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2021-12-14 11:06:58,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states.
[2021-12-14 11:06:58,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 88.
[2021-12-14 11:06:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.216867469879518) internal successors, (101), 83 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-12-14 11:06:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions.
[2021-12-14 11:06:58,992 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 31
[2021-12-14 11:06:58,992 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-14 11:06:58,993 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions.
[2021-12-14 11:06:58,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions.
[2021-12-14 11:06:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2021-12-14 11:06:58,997 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-14 11:06:58,997 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-14 11:06:59,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-12-14 11:06:59,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-14 11:06:59,212 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-14 11:06:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-14 11:06:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1437829230, now seen corresponding path program 2 times
[2021-12-14 11:06:59,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-14 11:06:59,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21684258]
[2021-12-14 11:06:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-14 11:06:59,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-14 11:06:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-14 11:06:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked.
[2021-12-14 11:06:59,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-14 11:06:59,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21684258]
[2021-12-14 11:06:59,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21684258] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-14 11:06:59,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-14 11:06:59,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-12-14 11:06:59,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945158439]
[2021-12-14 11:06:59,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-14 11:06:59,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-14 11:06:59,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-14 11:06:59,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-14 11:06:59,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-12-14 11:06:59,307 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:59,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-14 11:06:59,325 INFO L93 Difference]: Finished difference Result 153 states and 192 transitions.
[2021-12-14 11:06:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-12-14 11:06:59,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45
[2021-12-14 11:06:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-14 11:06:59,326 INFO L225 Difference]: With dead ends: 153
[2021-12-14 11:06:59,326 INFO L226 Difference]: Without dead ends: 114
[2021-12-14 11:06:59,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-12-14 11:06:59,332 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 18 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-14 11:06:59,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 177 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-14 11:06:59,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states.
[2021-12-14 11:06:59,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 91.
[2021-12-14 11:06:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 86 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-12-14 11:06:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions.
[2021-12-14 11:06:59,351 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 45
[2021-12-14 11:06:59,351 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-14 11:06:59,352 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions.
[2021-12-14 11:06:59,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions.
[2021-12-14 11:06:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2021-12-14 11:06:59,356 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-14 11:06:59,356 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-14 11:06:59,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-12-14 11:06:59,357 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-14 11:06:59,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-14 11:06:59,358 INFO L85 PathProgramCache]: Analyzing trace with hash 311045192, now seen corresponding path program 1 times
[2021-12-14 11:06:59,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-14 11:06:59,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253882983]
[2021-12-14 11:06:59,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-14 11:06:59,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-14 11:06:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-14 11:06:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked.
[2021-12-14 11:06:59,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-14 11:06:59,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253882983]
[2021-12-14 11:06:59,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253882983] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-14 11:06:59,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-14 11:06:59,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-12-14 11:06:59,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688130962]
[2021-12-14 11:06:59,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-14 11:06:59,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-14 11:06:59,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-14 11:06:59,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-14 11:06:59,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-12-14 11:06:59,473 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:59,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-14 11:06:59,488 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions.
[2021-12-14 11:06:59,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-12-14 11:06:59,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45
[2021-12-14 11:06:59,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-14 11:06:59,489 INFO L225 Difference]: With dead ends: 100
[2021-12-14 11:06:59,489 INFO L226 Difference]: Without dead ends: 0
[2021-12-14 11:06:59,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-12-14 11:06:59,490 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-14 11:06:59,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 28 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-14 11:06:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-12-14 11:06:59,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-12-14 11:06:59,492 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)
[2021-12-14 11:06:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-12-14 11:06:59,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45
[2021-12-14 11:06:59,492 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-14 11:06:59,492 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-12-14 11:06:59,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-12-14 11:06:59,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-12-14 11:06:59,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-12-14 11:06:59,495 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-12-14 11:06:59,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-12-14 11:06:59,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-12-14 11:06:59,668 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 54) no Hoare annotation was computed.
[2021-12-14 11:06:59,669 INFO L858 garLoopResultBuilder]: For program point L52-2(lines 52 54) no Hoare annotation was computed.
[2021-12-14 11:06:59,669 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-12-14 11:06:59,669 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-12-14 11:06:59,669 INFO L858 garLoopResultBuilder]: For program point L61-2(lines 61 65) no Hoare annotation was computed.
[2021-12-14 11:06:59,670 INFO L854 garLoopResultBuilder]: At program point L61-3(lines 61 65) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))
[2021-12-14 11:06:59,670 INFO L858 garLoopResultBuilder]: For program point L61-4(lines 61 65) no Hoare annotation was computed.
[2021-12-14 11:06:59,670 INFO L858 garLoopResultBuilder]: For program point L62-2(lines 62 64) no Hoare annotation was computed.
[2021-12-14 11:06:59,670 INFO L854 garLoopResultBuilder]: At program point L62-3(lines 62 64) the Hoare annotation is: false
[2021-12-14 11:06:59,670 INFO L854 garLoopResultBuilder]: At program point L63(line 63) the Hoare annotation is: false
[2021-12-14 11:06:59,673 INFO L858 garLoopResultBuilder]: For program point L63-1(line 63) no Hoare annotation was computed.
[2021-12-14 11:06:59,673 INFO L858 garLoopResultBuilder]: For program point L55-2(lines 55 59) no Hoare annotation was computed.
[2021-12-14 11:06:59,673 INFO L858 garLoopResultBuilder]: For program point L22-2(lines 22 24) no Hoare annotation was computed.
[2021-12-14 11:06:59,673 INFO L854 garLoopResultBuilder]: At program point L55-3(lines 55 59) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))
[2021-12-14 11:06:59,673 INFO L854 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))
[2021-12-14 11:06:59,673 INFO L858 garLoopResultBuilder]: For program point L22-4(lines 22 24) no Hoare annotation was computed.
[2021-12-14 11:06:59,674 INFO L858 garLoopResultBuilder]: For program point L47-2(lines 47 50) no Hoare annotation was computed.
[2021-12-14 11:06:59,674 INFO L854 garLoopResultBuilder]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))
[2021-12-14 11:06:59,674 INFO L858 garLoopResultBuilder]: For program point L47-4(lines 47 50) no Hoare annotation was computed.
[2021-12-14 11:06:59,675 INFO L858 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed.
[2021-12-14 11:06:59,675 INFO L854 garLoopResultBuilder]: At program point L39-3(lines 39 43) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))
[2021-12-14 11:06:59,675 INFO L858 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed.
[2021-12-14 11:06:59,675 INFO L858 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed.
[2021-12-14 11:06:59,676 INFO L858 garLoopResultBuilder]: For program point L56-2(lines 56 58) no Hoare annotation was computed.
[2021-12-14 11:06:59,676 INFO L854 garLoopResultBuilder]: At program point L56-3(lines 56 58) the Hoare annotation is: false
[2021-12-14 11:06:59,676 INFO L858 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed.
[2021-12-14 11:06:59,681 INFO L854 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: false
[2021-12-14 11:06:59,681 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-12-14 11:06:59,681 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: false
[2021-12-14 11:06:59,681 INFO L858 garLoopResultBuilder]: For program point L57-1(line 57) no Hoare annotation was computed.
[2021-12-14 11:06:59,681 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: false
[2021-12-14 11:06:59,682 INFO L858 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed.
[2021-12-14 11:06:59,682 INFO L861 garLoopResultBuilder]: At program point L66(lines 27 67) the Hoare annotation is: true
[2021-12-14 11:06:59,682 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-12-14 11:06:59,682 INFO L858 garLoopResultBuilder]: For program point L33-2(lines 33 36) no Hoare annotation was computed.
[2021-12-14 11:06:59,682 INFO L854 garLoopResultBuilder]: At program point L33-3(lines 33 36) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| 0)
[2021-12-14 11:06:59,682 INFO L858 garLoopResultBuilder]: For program point L33-4(lines 33 36) no Hoare annotation was computed.
[2021-12-14 11:06:59,682 INFO L854 garLoopResultBuilder]: At program point L25(lines 20 26) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= 0 |ULTIMATE.start_elem_exists_#res#1|) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))
[2021-12-14 11:06:59,683 INFO L854 garLoopResultBuilder]: At program point L18(lines 16 19) the Hoare annotation is: false
[2021-12-14 11:06:59,683 INFO L858 garLoopResultBuilder]: For program point L51-2(lines 51 60) no Hoare annotation was computed.
[2021-12-14 11:06:59,683 INFO L854 garLoopResultBuilder]: At program point L51-3(lines 51 60) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~n~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| 0))) (or (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) .cse0 .cse1) (and .cse0 (= |ULTIMATE.start_main_~v~0#1| 0) .cse1)))
[2021-12-14 11:06:59,683 INFO L858 garLoopResultBuilder]: For program point L51-4(lines 51 60) no Hoare annotation was computed.
[2021-12-14 11:06:59,683 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(line 13) the Hoare annotation is: true
[2021-12-14 11:06:59,683 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed.
[2021-12-14 11:06:59,683 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed.
[2021-12-14 11:06:59,683 INFO L858 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed.
[2021-12-14 11:06:59,684 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed.
[2021-12-14 11:06:59,684 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed.
[2021-12-14 11:06:59,687 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1]
[2021-12-14 11:06:59,688 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-12-14 11:06:59,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:06:59 BoogieIcfgContainer
[2021-12-14 11:06:59,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-12-14 11:06:59,701 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-12-14 11:06:59,701 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-12-14 11:06:59,701 INFO L275 PluginConnector]: Witness Printer initialized
[2021-12-14 11:06:59,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:06:56" (3/4) ...
[2021-12-14 11:06:59,704 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-12-14 11:06:59,708 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2021-12-14 11:06:59,712 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges
[2021-12-14 11:06:59,713 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges
[2021-12-14 11:06:59,713 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-12-14 11:06:59,713 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-12-14 11:06:59,731 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((size == 0 && i == 0) && 0 == \result) && n == 0) && x == 0
[2021-12-14 11:06:59,746 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2021-12-14 11:06:59,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-12-14 11:06:59,747 INFO L158 Benchmark]: Toolchain (without parser) took 3847.24ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 59.6MB in the beginning and 79.8MB in the end (delta: -20.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-12-14 11:06:59,747 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory was 46.5MB in the beginning and 46.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-12-14 11:06:59,748 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.76ms. Allocated memory is still 90.2MB. Free memory was 59.3MB in the beginning and 65.5MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-12-14 11:06:59,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.65ms. Allocated memory is still 90.2MB. Free memory was 65.5MB in the beginning and 63.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-12-14 11:06:59,748 INFO L158 Benchmark]: Boogie Preprocessor took 25.87ms. Allocated memory is still 90.2MB. Free memory was 63.7MB in the beginning and 62.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-12-14 11:06:59,749 INFO L158 Benchmark]: RCFGBuilder took 387.86ms. Allocated memory is still 90.2MB. Free memory was 62.1MB in the beginning and 49.6MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2021-12-14 11:06:59,749 INFO L158 Benchmark]: TraceAbstraction took 3110.59ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 49.0MB in the beginning and 84.0MB in the end (delta: -34.9MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB.
[2021-12-14 11:06:59,749 INFO L158 Benchmark]: Witness Printer took 45.70ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 79.8MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2021-12-14 11:06:59,751 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory was 46.5MB in the beginning and 46.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 236.76ms. Allocated memory is still 90.2MB. Free memory was 59.3MB in the beginning and 65.5MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 32.65ms. Allocated memory is still 90.2MB. Free memory was 65.5MB in the beginning and 63.7MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 25.87ms. Allocated memory is still 90.2MB. Free memory was 63.7MB in the beginning and 62.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 387.86ms. Allocated memory is still 90.2MB. Free memory was 62.1MB in the beginning and 49.6MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 3110.59ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 49.0MB in the beginning and 84.0MB in the end (delta: -34.9MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB.
* Witness Printer took 45.70ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 79.8MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. 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: 13]: 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 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1425 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1385 mSDsluCounter, 1167 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 799 mSDsCounter, 355 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 355 mSolverCounterUnsat, 368 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=6, InterpolantAutomatonStates: 58, 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, 7 MinimizatonAttempts, 699 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 35 PreInvPairs, 58 NumberOfFragments, 99 HoareAnnotationTreeSize, 35 FomulaSimplifications, 92 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 17 FomulaSimplificationsInter, 438 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 245 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 258/294 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: 39]: Loop Invariant
Derived loop invariant: n == 0 && x == 0
- InvariantResult [Line: 27]: Loop Invariant
Derived loop invariant: 1
- InvariantResult [Line: 55]: Loop Invariant
Derived loop invariant: ((size == 0 && i == 0) && n == 0) && x == 0
- InvariantResult [Line: 51]: Loop Invariant
Derived loop invariant: (((size == 0 && i == 0) && n == 0) && x == 0) || ((n == 0 && v == 0) && x == 0)
- InvariantResult [Line: 20]: Loop Invariant
Derived loop invariant: (((size == 0 && i == 0) && 0 == \result) && n == 0) && x == 0
- InvariantResult [Line: 61]: Loop Invariant
Derived loop invariant: n == 0 && x == 0
- InvariantResult [Line: 16]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 40]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 47]: Loop Invariant
Derived loop invariant: n == 0 && x == 0
- InvariantResult [Line: 56]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 22]: Loop Invariant
Derived loop invariant: ((size == 0 && i == 0) && n == 0) && x == 0
- InvariantResult [Line: 33]: Loop Invariant
Derived loop invariant: n == 0
- InvariantResult [Line: 62]: Loop Invariant
Derived loop invariant: 0
RESULT: Ultimate proved your program to be correct!
[2021-12-14 11:06:59,787 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