/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i


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


This is Ultimate 0.1.25-b981219
[2020-04-18 15:33:24,935 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-04-18 15:33:24,937 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-04-18 15:33:24,949 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-04-18 15:33:24,949 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2020-04-18 15:33:24,962 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-04-18 15:33:24,963 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-04-18 15:33:24,965 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-04-18 15:33:24,967 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2020-04-18 15:33:24,970 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-04-18 15:33:24,971 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-04-18 15:33:24,972 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-04-18 15:33:24,975 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2020-04-18 15:33:24,976 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2020-04-18 15:33:24,983 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-04-18 15:33:24,985 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-04-18 15:33:24,986 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf
[2020-04-18 15:33:25,001 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-04-18 15:33:25,001 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-04-18 15:33:25,002 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-04-18 15:33:25,002 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-04-18 15:33:25,002 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-04-18 15:33:25,003 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-04-18 15:33:25,003 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-04-18 15:33:25,003 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-04-18 15:33:25,003 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-04-18 15:33:25,004 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-04-18 15:33:25,004 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-04-18 15:33:25,004 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-04-18 15:33:25,004 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-04-18 15:33:25,004 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-04-18 15:33:25,005 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-04-18 15:33:25,005 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-04-18 15:33:25,005 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-04-18 15:33:25,005 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-04-18 15:33:25,005 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-04-18 15:33:25,006 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-04-18 15:33:25,006 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-04-18 15:33:25,006 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-04-18 15:33:25,006 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-04-18 15:33:25,006 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-04-18 15:33:25,007 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-04-18 15:33:25,007 INFO  L138        SettingsManager]:  * Trace refinement strategy=MCR
[2020-04-18 15:33:25,007 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-04-18 15:33:25,007 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK
[2020-04-18 15:33:25,007 INFO  L138        SettingsManager]:  * Trace refinement strategy used in MCR=CAMEL
[2020-04-18 15:33:25,007 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-04-18 15:33:25,008 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2020-04-18 15:33:25,304 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-04-18 15:33:25,318 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-04-18 15:33:25,322 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-04-18 15:33:25,323 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-04-18 15:33:25,324 INFO  L275        PluginConnector]: CDTParser initialized
[2020-04-18 15:33:25,325 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i
[2020-04-18 15:33:25,386 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017cc2267/db480b87e38141e4a66b06e74353b487/FLAG5be4d8175
[2020-04-18 15:33:25,893 INFO  L306              CDTParser]: Found 1 translation units.
[2020-04-18 15:33:25,893 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i
[2020-04-18 15:33:25,912 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017cc2267/db480b87e38141e4a66b06e74353b487/FLAG5be4d8175
[2020-04-18 15:33:26,221 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/017cc2267/db480b87e38141e4a66b06e74353b487
[2020-04-18 15:33:26,230 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-04-18 15:33:26,252 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2020-04-18 15:33:26,253 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-04-18 15:33:26,253 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-04-18 15:33:26,257 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-04-18 15:33:26,258 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:33:26" (1/1) ...
[2020-04-18 15:33:26,260 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26, skipping insertion in model container
[2020-04-18 15:33:26,261 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:33:26" (1/1) ...
[2020-04-18 15:33:26,268 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-04-18 15:33:26,327 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-04-18 15:33:26,784 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-04-18 15:33:26,800 INFO  L203         MainTranslator]: Completed pre-run
[2020-04-18 15:33:26,848 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-04-18 15:33:26,934 INFO  L208         MainTranslator]: Completed translation
[2020-04-18 15:33:26,935 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26 WrapperNode
[2020-04-18 15:33:26,935 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-04-18 15:33:26,936 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2020-04-18 15:33:26,936 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2020-04-18 15:33:26,936 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2020-04-18 15:33:26,943 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26" (1/1) ...
[2020-04-18 15:33:26,959 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26" (1/1) ...
[2020-04-18 15:33:26,979 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2020-04-18 15:33:26,980 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-04-18 15:33:26,980 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-04-18 15:33:26,980 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-04-18 15:33:26,989 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26" (1/1) ...
[2020-04-18 15:33:26,989 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26" (1/1) ...
[2020-04-18 15:33:26,992 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26" (1/1) ...
[2020-04-18 15:33:26,993 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26" (1/1) ...
[2020-04-18 15:33:26,999 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26" (1/1) ...
[2020-04-18 15:33:27,002 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26" (1/1) ...
[2020-04-18 15:33:27,004 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26" (1/1) ...
[2020-04-18 15:33:27,007 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-04-18 15:33:27,008 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-04-18 15:33:27,008 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-04-18 15:33:27,008 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-04-18 15:33:27,009 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-04-18 15:33:27,077 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-04-18 15:33:27,078 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2020-04-18 15:33:27,078 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-04-18 15:33:27,078 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-04-18 15:33:27,078 INFO  L130     BoogieDeclarations]: Found specification of procedure P0
[2020-04-18 15:33:27,078 INFO  L138     BoogieDeclarations]: Found implementation of procedure P0
[2020-04-18 15:33:27,079 INFO  L130     BoogieDeclarations]: Found specification of procedure P1
[2020-04-18 15:33:27,079 INFO  L138     BoogieDeclarations]: Found implementation of procedure P1
[2020-04-18 15:33:27,079 INFO  L130     BoogieDeclarations]: Found specification of procedure P2
[2020-04-18 15:33:27,079 INFO  L138     BoogieDeclarations]: Found implementation of procedure P2
[2020-04-18 15:33:27,079 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2020-04-18 15:33:27,079 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-04-18 15:33:27,080 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-04-18 15:33:27,081 WARN  L205             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2020-04-18 15:33:27,476 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-04-18 15:33:27,477 INFO  L295             CfgBuilder]: Removed 8 assume(true) statements.
[2020-04-18 15:33:27,484 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:33:27 BoogieIcfgContainer
[2020-04-18 15:33:27,484 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-04-18 15:33:27,486 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-04-18 15:33:27,486 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-04-18 15:33:27,489 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-04-18 15:33:27,489 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:33:26" (1/3) ...
[2020-04-18 15:33:27,490 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c98fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:33:27, skipping insertion in model container
[2020-04-18 15:33:27,491 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:33:26" (2/3) ...
[2020-04-18 15:33:27,491 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c98fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:33:27, skipping insertion in model container
[2020-04-18 15:33:27,491 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:33:27" (3/3) ...
[2020-04-18 15:33:27,493 INFO  L109   eAbstractionObserver]: Analyzing ICFG safe028_tso.opt.i
[2020-04-18 15:33:27,503 WARN  L146   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2020-04-18 15:33:27,503 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-04-18 15:33:27,509 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-04-18 15:33:27,511 INFO  L340   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2020-04-18 15:33:27,535 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,536 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,536 WARN  L315   ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,537 WARN  L315   ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,537 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,537 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,538 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,538 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,538 WARN  L315   ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,539 WARN  L315   ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,539 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,539 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,540 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,540 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,540 WARN  L315   ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,541 WARN  L315   ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,541 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,541 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,547 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,547 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,547 WARN  L315   ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,548 WARN  L315   ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,558 WARN  L315   ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,559 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,559 WARN  L315   ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,559 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,567 WARN  L315   ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,568 WARN  L315   ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,568 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,568 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 15:33:27,591 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2020-04-18 15:33:27,607 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-04-18 15:33:27,608 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-04-18 15:33:27,608 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-04-18 15:33:27,608 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-04-18 15:33:27,608 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-04-18 15:33:27,608 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-04-18 15:33:27,609 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-04-18 15:33:27,609 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-04-18 15:33:27,625 INFO  L152   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow
[2020-04-18 15:33:27,627 INFO  L71            FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow
[2020-04-18 15:33:27,671 INFO  L129       PetriNetUnfolder]: 2/66 cut-off events.
[2020-04-18 15:33:27,672 INFO  L130       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2020-04-18 15:33:27,677 INFO  L80            FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. 
[2020-04-18 15:33:27,680 INFO  L71            FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow
[2020-04-18 15:33:27,701 INFO  L129       PetriNetUnfolder]: 2/66 cut-off events.
[2020-04-18 15:33:27,701 INFO  L130       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2020-04-18 15:33:27,702 INFO  L80            FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. 
[2020-04-18 15:33:27,704 INFO  L158   etLargeBlockEncoding]: Number of co-enabled transitions 1178
[2020-04-18 15:33:27,705 INFO  L182   etLargeBlockEncoding]: Variable Check.
[2020-04-18 15:33:29,262 INFO  L206   etLargeBlockEncoding]: Checked pairs total: 2037
[2020-04-18 15:33:29,262 INFO  L214   etLargeBlockEncoding]: Total number of compositions: 54
[2020-04-18 15:33:29,266 INFO  L100   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow
[2020-04-18 15:33:29,287 INFO  L122   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states.
[2020-04-18 15:33:29,289 INFO  L276                IsEmpty]: Start isEmpty. Operand 226 states.
[2020-04-18 15:33:29,297 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2020-04-18 15:33:29,297 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 15:33:29,298 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 15:33:29,298 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 15:33:29,304 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:29,304 INFO  L82        PathProgramCache]: Analyzing trace with hash 2007579917, now seen corresponding path program 1 times
[2020-04-18 15:33:29,311 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 15:33:29,312 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [1768178569]
[2020-04-18 15:33:29,323 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:29,336 INFO  L259    McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions.
[2020-04-18 15:33:29,337 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states.
[2020-04-18 15:33:29,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2020-04-18 15:33:29,338 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 15:33:29,338 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:29,339 INFO  L82        PathProgramCache]: Analyzing trace with hash 2007579917, now seen corresponding path program 2 times
[2020-04-18 15:33:29,342 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:29,343 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509569773]
[2020-04-18 15:33:29,343 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:29,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:29,550 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:29,551 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509569773]
[2020-04-18 15:33:29,552 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:29,552 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2020-04-18 15:33:29,554 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:29,554 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:29,557 INFO  L259    McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions.
[2020-04-18 15:33:29,558 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:29,565 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times.
[2020-04-18 15:33:29,569 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-04-18 15:33:29,570 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-04-18 15:33:29,572 INFO  L87              Difference]: Start difference. First operand 9 states. Second operand 3 states.
[2020-04-18 15:33:29,575 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:29,576 INFO  L93              Difference]: Finished difference Result 9 states and 8 transitions.
[2020-04-18 15:33:29,576 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions.
[2020-04-18 15:33:29,576 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 15:33:29,577 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1768178569]
[2020-04-18 15:33:29,578 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 15:33:29,578 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1
[2020-04-18 15:33:29,578 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1768178569]
[2020-04-18 15:33:29,579 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-04-18 15:33:29,580 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 15:33:29,584 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-04-18 15:33:29,585 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-04-18 15:33:29,585 INFO  L87              Difference]: Start difference. First operand 226 states. Second operand 3 states.
[2020-04-18 15:33:29,616 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:29,617 INFO  L93              Difference]: Finished difference Result 214 states and 593 transitions.
[2020-04-18 15:33:29,617 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-04-18 15:33:29,619 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 8
[2020-04-18 15:33:29,619 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 15:33:29,634 INFO  L225             Difference]: With dead ends: 214
[2020-04-18 15:33:29,635 INFO  L226             Difference]: Without dead ends: 166
[2020-04-18 15:33:29,636 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-04-18 15:33:29,660 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 166 states.
[2020-04-18 15:33:29,694 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166.
[2020-04-18 15:33:29,696 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 166 states.
[2020-04-18 15:33:29,699 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 441 transitions.
[2020-04-18 15:33:29,701 INFO  L78                 Accepts]: Start accepts. Automaton has 166 states and 441 transitions. Word has length 8
[2020-04-18 15:33:29,702 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 15:33:29,702 INFO  L479      AbstractCegarLoop]: Abstraction has 166 states and 441 transitions.
[2020-04-18 15:33:29,702 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-04-18 15:33:29,703 INFO  L276                IsEmpty]: Start isEmpty. Operand 166 states and 441 transitions.
[2020-04-18 15:33:29,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2020-04-18 15:33:29,704 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 15:33:29,704 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 15:33:29,705 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 15:33:29,705 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:29,705 INFO  L82        PathProgramCache]: Analyzing trace with hash 2105434478, now seen corresponding path program 1 times
[2020-04-18 15:33:29,705 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 15:33:29,706 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [1998958194]
[2020-04-18 15:33:29,706 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:29,707 INFO  L259    McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions.
[2020-04-18 15:33:29,707 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states.
[2020-04-18 15:33:29,708 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2020-04-18 15:33:29,708 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 15:33:29,708 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:29,708 INFO  L82        PathProgramCache]: Analyzing trace with hash 2105434478, now seen corresponding path program 2 times
[2020-04-18 15:33:29,709 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:29,709 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009175290]
[2020-04-18 15:33:29,709 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:29,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:29,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:29,799 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009175290]
[2020-04-18 15:33:29,800 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:29,801 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-04-18 15:33:29,801 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:29,802 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:29,806 INFO  L259    McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions.
[2020-04-18 15:33:29,806 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:29,819 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times.
[2020-04-18 15:33:29,819 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-04-18 15:33:29,820 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-04-18 15:33:29,820 INFO  L87              Difference]: Start difference. First operand 12 states. Second operand 4 states.
[2020-04-18 15:33:29,832 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:29,832 INFO  L93              Difference]: Finished difference Result 12 states and 13 transitions.
[2020-04-18 15:33:29,832 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions.
[2020-04-18 15:33:29,833 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 15:33:29,833 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1998958194]
[2020-04-18 15:33:29,833 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 15:33:29,834 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2
[2020-04-18 15:33:29,834 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1998958194]
[2020-04-18 15:33:29,835 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-04-18 15:33:29,835 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 15:33:29,835 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-04-18 15:33:29,835 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-04-18 15:33:29,836 INFO  L87              Difference]: Start difference. First operand 166 states and 441 transitions. Second operand 4 states.
[2020-04-18 15:33:29,864 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:29,864 INFO  L93              Difference]: Finished difference Result 202 states and 516 transitions.
[2020-04-18 15:33:29,865 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-04-18 15:33:29,865 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 9
[2020-04-18 15:33:29,865 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 15:33:29,870 INFO  L225             Difference]: With dead ends: 202
[2020-04-18 15:33:29,871 INFO  L226             Difference]: Without dead ends: 130
[2020-04-18 15:33:29,873 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-04-18 15:33:29,879 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2020-04-18 15:33:29,893 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130.
[2020-04-18 15:33:29,894 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 130 states.
[2020-04-18 15:33:29,895 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 322 transitions.
[2020-04-18 15:33:29,895 INFO  L78                 Accepts]: Start accepts. Automaton has 130 states and 322 transitions. Word has length 9
[2020-04-18 15:33:29,896 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 15:33:29,896 INFO  L479      AbstractCegarLoop]: Abstraction has 130 states and 322 transitions.
[2020-04-18 15:33:29,896 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-04-18 15:33:29,896 INFO  L276                IsEmpty]: Start isEmpty. Operand 130 states and 322 transitions.
[2020-04-18 15:33:29,897 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-04-18 15:33:29,897 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 15:33:29,897 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 15:33:29,898 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 15:33:29,898 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:29,898 INFO  L82        PathProgramCache]: Analyzing trace with hash 857303980, now seen corresponding path program 1 times
[2020-04-18 15:33:29,898 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 15:33:29,898 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [528498667]
[2020-04-18 15:33:29,899 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:29,900 INFO  L259    McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions.
[2020-04-18 15:33:29,900 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states.
[2020-04-18 15:33:29,901 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-04-18 15:33:29,901 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 15:33:29,901 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:29,901 INFO  L82        PathProgramCache]: Analyzing trace with hash 857303980, now seen corresponding path program 2 times
[2020-04-18 15:33:29,902 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:29,902 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877475363]
[2020-04-18 15:33:29,902 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:29,946 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:30,021 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:30,022 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877475363]
[2020-04-18 15:33:30,022 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:30,022 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-04-18 15:33:30,022 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:30,023 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:30,025 INFO  L259    McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions.
[2020-04-18 15:33:30,025 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:30,036 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times.
[2020-04-18 15:33:30,036 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-04-18 15:33:30,036 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-04-18 15:33:30,037 INFO  L87              Difference]: Start difference. First operand 20 states. Second operand 4 states.
[2020-04-18 15:33:30,047 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:30,047 INFO  L93              Difference]: Finished difference Result 20 states and 30 transitions.
[2020-04-18 15:33:30,047 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 30 transitions.
[2020-04-18 15:33:30,048 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 15:33:30,048 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [528498667]
[2020-04-18 15:33:30,048 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 15:33:30,049 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2
[2020-04-18 15:33:30,049 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [528498667]
[2020-04-18 15:33:30,049 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-04-18 15:33:30,049 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 15:33:30,050 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-04-18 15:33:30,050 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-04-18 15:33:30,050 INFO  L87              Difference]: Start difference. First operand 130 states and 322 transitions. Second operand 4 states.
[2020-04-18 15:33:30,082 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:30,083 INFO  L93              Difference]: Finished difference Result 148 states and 336 transitions.
[2020-04-18 15:33:30,088 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-04-18 15:33:30,088 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 10
[2020-04-18 15:33:30,089 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 15:33:30,090 INFO  L225             Difference]: With dead ends: 148
[2020-04-18 15:33:30,090 INFO  L226             Difference]: Without dead ends: 112
[2020-04-18 15:33:30,090 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-04-18 15:33:30,095 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2020-04-18 15:33:30,109 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112.
[2020-04-18 15:33:30,111 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 112 states.
[2020-04-18 15:33:30,112 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 253 transitions.
[2020-04-18 15:33:30,112 INFO  L78                 Accepts]: Start accepts. Automaton has 112 states and 253 transitions. Word has length 10
[2020-04-18 15:33:30,113 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 15:33:30,113 INFO  L479      AbstractCegarLoop]: Abstraction has 112 states and 253 transitions.
[2020-04-18 15:33:30,113 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-04-18 15:33:30,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 112 states and 253 transitions.
[2020-04-18 15:33:30,114 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-04-18 15:33:30,114 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 15:33:30,114 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 15:33:30,115 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 15:33:30,115 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:30,115 INFO  L82        PathProgramCache]: Analyzing trace with hash 806230555, now seen corresponding path program 1 times
[2020-04-18 15:33:30,115 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 15:33:30,116 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [585659815]
[2020-04-18 15:33:30,116 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:30,117 INFO  L259    McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions.
[2020-04-18 15:33:30,117 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states.
[2020-04-18 15:33:30,118 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-04-18 15:33:30,118 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 15:33:30,118 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:30,119 INFO  L82        PathProgramCache]: Analyzing trace with hash 806634175, now seen corresponding path program 2 times
[2020-04-18 15:33:30,119 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:30,119 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630789950]
[2020-04-18 15:33:30,119 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:30,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:30,221 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:30,221 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630789950]
[2020-04-18 15:33:30,221 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:30,222 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-04-18 15:33:30,222 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:30,226 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:30,229 INFO  L259    McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions.
[2020-04-18 15:33:30,229 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:30,240 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times.
[2020-04-18 15:33:30,241 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-04-18 15:33:30,242 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-04-18 15:33:30,242 INFO  L87              Difference]: Start difference. First operand 28 states. Second operand 4 states.
[2020-04-18 15:33:30,256 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:30,256 INFO  L93              Difference]: Finished difference Result 32 states and 51 transitions.
[2020-04-18 15:33:30,256 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions.
[2020-04-18 15:33:30,257 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-04-18 15:33:30,257 INFO  L105                    Mcr]: ---- MCR iteration 1 ----
[2020-04-18 15:33:30,258 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:30,258 INFO  L82        PathProgramCache]: Analyzing trace with hash 806230555, now seen corresponding path program 3 times
[2020-04-18 15:33:30,258 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:30,259 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860661146]
[2020-04-18 15:33:30,259 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:30,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:30,361 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:30,361 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860661146]
[2020-04-18 15:33:30,361 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:30,362 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-04-18 15:33:30,362 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:30,363 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:30,365 INFO  L259    McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions.
[2020-04-18 15:33:30,365 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:30,411 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times.
[2020-04-18 15:33:30,411 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-04-18 15:33:30,412 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-04-18 15:33:30,412 INFO  L87              Difference]: Start difference. First operand 32 states and 51 transitions. Second operand 6 states.
[2020-04-18 15:33:30,428 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:30,428 INFO  L93              Difference]: Finished difference Result 32 states and 51 transitions.
[2020-04-18 15:33:30,428 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions.
[2020-04-18 15:33:30,429 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 15:33:30,429 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [585659815]
[2020-04-18 15:33:30,429 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 15:33:30,430 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3
[2020-04-18 15:33:30,430 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [585659815]
[2020-04-18 15:33:30,430 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-04-18 15:33:30,430 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 15:33:30,430 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-04-18 15:33:30,431 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2020-04-18 15:33:30,431 INFO  L87              Difference]: Start difference. First operand 112 states and 253 transitions. Second operand 6 states.
[2020-04-18 15:33:30,489 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:30,489 INFO  L93              Difference]: Finished difference Result 109 states and 227 transitions.
[2020-04-18 15:33:30,489 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-04-18 15:33:30,490 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 11
[2020-04-18 15:33:30,490 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 15:33:30,491 INFO  L225             Difference]: With dead ends: 109
[2020-04-18 15:33:30,491 INFO  L226             Difference]: Without dead ends: 85
[2020-04-18 15:33:30,491 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2020-04-18 15:33:30,492 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2020-04-18 15:33:30,496 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2020-04-18 15:33:30,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-04-18 15:33:30,497 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 173 transitions.
[2020-04-18 15:33:30,497 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 173 transitions. Word has length 11
[2020-04-18 15:33:30,497 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 15:33:30,498 INFO  L479      AbstractCegarLoop]: Abstraction has 85 states and 173 transitions.
[2020-04-18 15:33:30,498 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-04-18 15:33:30,498 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 173 transitions.
[2020-04-18 15:33:30,498 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-04-18 15:33:30,499 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 15:33:30,499 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 15:33:30,499 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 15:33:30,499 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:30,499 INFO  L82        PathProgramCache]: Analyzing trace with hash 1664906609, now seen corresponding path program 1 times
[2020-04-18 15:33:30,500 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 15:33:30,500 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [1997482023]
[2020-04-18 15:33:30,500 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:30,502 INFO  L259    McrAutomatonBuilder]: Finished intersection with 46 states and 89 transitions.
[2020-04-18 15:33:30,502 INFO  L276                IsEmpty]: Start isEmpty. Operand 46 states.
[2020-04-18 15:33:30,503 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-04-18 15:33:30,503 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 15:33:30,503 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:30,504 INFO  L82        PathProgramCache]: Analyzing trace with hash 2081333969, now seen corresponding path program 2 times
[2020-04-18 15:33:30,504 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:30,504 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504694634]
[2020-04-18 15:33:30,504 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:30,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:30,570 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:30,571 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504694634]
[2020-04-18 15:33:30,571 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:30,571 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-04-18 15:33:30,571 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:30,589 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:30,591 INFO  L259    McrAutomatonBuilder]: Finished intersection with 21 states and 27 transitions.
[2020-04-18 15:33:30,592 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:30,601 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times.
[2020-04-18 15:33:30,601 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-04-18 15:33:30,601 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-04-18 15:33:30,601 INFO  L87              Difference]: Start difference. First operand 46 states. Second operand 4 states.
[2020-04-18 15:33:30,626 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:30,626 INFO  L93              Difference]: Finished difference Result 58 states and 105 transitions.
[2020-04-18 15:33:30,627 INFO  L276                IsEmpty]: Start isEmpty. Operand 58 states and 105 transitions.
[2020-04-18 15:33:30,627 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-04-18 15:33:30,627 INFO  L105                    Mcr]: ---- MCR iteration 1 ----
[2020-04-18 15:33:30,628 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:30,628 INFO  L82        PathProgramCache]: Analyzing trace with hash 1693455149, now seen corresponding path program 3 times
[2020-04-18 15:33:30,628 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:30,628 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643949151]
[2020-04-18 15:33:30,629 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:30,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:30,723 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:30,723 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643949151]
[2020-04-18 15:33:30,723 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:30,724 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-04-18 15:33:30,724 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:30,726 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:30,728 INFO  L259    McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions.
[2020-04-18 15:33:30,728 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:30,766 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times.
[2020-04-18 15:33:30,766 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-04-18 15:33:30,767 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-04-18 15:33:30,767 INFO  L87              Difference]: Start difference. First operand 58 states and 105 transitions. Second operand 6 states.
[2020-04-18 15:33:30,820 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:30,821 INFO  L93              Difference]: Finished difference Result 60 states and 106 transitions.
[2020-04-18 15:33:30,821 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions.
[2020-04-18 15:33:30,821 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-04-18 15:33:30,821 INFO  L105                    Mcr]: ---- MCR iteration 2 ----
[2020-04-18 15:33:30,822 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:30,822 INFO  L82        PathProgramCache]: Analyzing trace with hash 1664906609, now seen corresponding path program 4 times
[2020-04-18 15:33:30,822 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:30,822 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047335958]
[2020-04-18 15:33:30,823 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:30,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:30,906 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:30,907 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047335958]
[2020-04-18 15:33:30,907 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:30,907 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-04-18 15:33:30,908 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:30,909 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:30,911 INFO  L259    McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions.
[2020-04-18 15:33:30,911 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:30,936 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times.
[2020-04-18 15:33:30,937 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 15:33:30,937 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72
[2020-04-18 15:33:30,937 INFO  L87              Difference]: Start difference. First operand 60 states and 106 transitions. Second operand 7 states.
[2020-04-18 15:33:30,986 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:30,986 INFO  L93              Difference]: Finished difference Result 60 states and 106 transitions.
[2020-04-18 15:33:30,986 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions.
[2020-04-18 15:33:30,987 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 15:33:30,987 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1997482023]
[2020-04-18 15:33:30,987 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 15:33:30,988 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4
[2020-04-18 15:33:30,988 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1997482023]
[2020-04-18 15:33:30,988 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-04-18 15:33:30,988 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 15:33:30,988 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 15:33:30,989 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90
[2020-04-18 15:33:30,989 INFO  L87              Difference]: Start difference. First operand 85 states and 173 transitions. Second operand 7 states.
[2020-04-18 15:33:31,044 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:31,045 INFO  L93              Difference]: Finished difference Result 80 states and 161 transitions.
[2020-04-18 15:33:31,045 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-04-18 15:33:31,045 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 13
[2020-04-18 15:33:31,045 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 15:33:31,046 INFO  L225             Difference]: With dead ends: 80
[2020-04-18 15:33:31,046 INFO  L226             Difference]: Without dead ends: 72
[2020-04-18 15:33:31,047 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90
[2020-04-18 15:33:31,047 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2020-04-18 15:33:31,050 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72.
[2020-04-18 15:33:31,051 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 72 states.
[2020-04-18 15:33:31,051 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 147 transitions.
[2020-04-18 15:33:31,051 INFO  L78                 Accepts]: Start accepts. Automaton has 72 states and 147 transitions. Word has length 13
[2020-04-18 15:33:31,051 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 15:33:31,052 INFO  L479      AbstractCegarLoop]: Abstraction has 72 states and 147 transitions.
[2020-04-18 15:33:31,052 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-04-18 15:33:31,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 72 states and 147 transitions.
[2020-04-18 15:33:31,052 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-04-18 15:33:31,052 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 15:33:31,053 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 15:33:31,053 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 15:33:31,053 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:31,053 INFO  L82        PathProgramCache]: Analyzing trace with hash 399497030, now seen corresponding path program 1 times
[2020-04-18 15:33:31,053 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 15:33:31,054 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [546909142]
[2020-04-18 15:33:31,054 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:31,063 INFO  L259    McrAutomatonBuilder]: Finished intersection with 178 states and 482 transitions.
[2020-04-18 15:33:31,065 INFO  L276                IsEmpty]: Start isEmpty. Operand 178 states.
[2020-04-18 15:33:31,066 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-04-18 15:33:31,066 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 15:33:31,066 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:31,067 INFO  L82        PathProgramCache]: Analyzing trace with hash 1909222784, now seen corresponding path program 2 times
[2020-04-18 15:33:31,067 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:31,067 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121576832]
[2020-04-18 15:33:31,068 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:31,081 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:31,146 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:31,146 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121576832]
[2020-04-18 15:33:31,146 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:31,147 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-04-18 15:33:31,147 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:31,150 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:31,157 INFO  L259    McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions.
[2020-04-18 15:33:31,157 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:31,169 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times.
[2020-04-18 15:33:31,169 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-04-18 15:33:31,169 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-04-18 15:33:31,169 INFO  L87              Difference]: Start difference. First operand 178 states. Second operand 4 states.
[2020-04-18 15:33:31,199 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:31,200 INFO  L93              Difference]: Finished difference Result 238 states and 612 transitions.
[2020-04-18 15:33:31,200 INFO  L276                IsEmpty]: Start isEmpty. Operand 238 states and 612 transitions.
[2020-04-18 15:33:31,201 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-04-18 15:33:31,201 INFO  L105                    Mcr]: ---- MCR iteration 1 ----
[2020-04-18 15:33:31,202 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:31,202 INFO  L82        PathProgramCache]: Analyzing trace with hash 1953593056, now seen corresponding path program 3 times
[2020-04-18 15:33:31,202 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:31,202 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523767384]
[2020-04-18 15:33:31,203 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:31,236 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:31,320 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:31,322 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523767384]
[2020-04-18 15:33:31,323 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:31,323 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-04-18 15:33:31,323 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:31,325 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:31,328 INFO  L259    McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions.
[2020-04-18 15:33:31,328 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:31,364 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times.
[2020-04-18 15:33:31,364 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-04-18 15:33:31,365 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-04-18 15:33:31,365 INFO  L87              Difference]: Start difference. First operand 238 states and 612 transitions. Second operand 6 states.
[2020-04-18 15:33:31,455 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:31,456 INFO  L93              Difference]: Finished difference Result 256 states and 637 transitions.
[2020-04-18 15:33:31,456 INFO  L276                IsEmpty]: Start isEmpty. Operand 256 states and 637 transitions.
[2020-04-18 15:33:31,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-04-18 15:33:31,457 INFO  L105                    Mcr]: ---- MCR iteration 2 ----
[2020-04-18 15:33:31,457 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:31,458 INFO  L82        PathProgramCache]: Analyzing trace with hash 1206368608, now seen corresponding path program 4 times
[2020-04-18 15:33:31,458 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:31,462 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693028796]
[2020-04-18 15:33:31,463 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:31,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:31,519 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:31,520 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693028796]
[2020-04-18 15:33:31,520 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:31,520 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-04-18 15:33:31,521 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:31,522 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:31,528 INFO  L259    McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions.
[2020-04-18 15:33:31,528 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:31,573 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times.
[2020-04-18 15:33:31,573 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-04-18 15:33:31,573 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2020-04-18 15:33:31,574 INFO  L87              Difference]: Start difference. First operand 256 states and 637 transitions. Second operand 5 states.
[2020-04-18 15:33:31,608 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:31,608 INFO  L93              Difference]: Finished difference Result 378 states and 878 transitions.
[2020-04-18 15:33:31,609 INFO  L276                IsEmpty]: Start isEmpty. Operand 378 states and 878 transitions.
[2020-04-18 15:33:31,610 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-04-18 15:33:31,611 INFO  L105                    Mcr]: ---- MCR iteration 3 ----
[2020-04-18 15:33:31,611 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:31,611 INFO  L82        PathProgramCache]: Analyzing trace with hash 1263359428, now seen corresponding path program 5 times
[2020-04-18 15:33:31,611 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:31,612 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748149415]
[2020-04-18 15:33:31,612 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:31,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:31,700 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:31,700 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748149415]
[2020-04-18 15:33:31,701 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:31,701 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-04-18 15:33:31,701 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:31,702 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:31,744 INFO  L259    McrAutomatonBuilder]: Finished intersection with 27 states and 36 transitions.
[2020-04-18 15:33:31,745 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:31,786 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times.
[2020-04-18 15:33:31,786 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 15:33:31,786 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2020-04-18 15:33:31,787 INFO  L87              Difference]: Start difference. First operand 378 states and 878 transitions. Second operand 7 states.
[2020-04-18 15:33:31,900 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:31,901 INFO  L93              Difference]: Finished difference Result 382 states and 880 transitions.
[2020-04-18 15:33:31,901 INFO  L276                IsEmpty]: Start isEmpty. Operand 382 states and 880 transitions.
[2020-04-18 15:33:31,902 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-04-18 15:33:31,902 INFO  L105                    Mcr]: ---- MCR iteration 4 ----
[2020-04-18 15:33:31,903 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:31,903 INFO  L82        PathProgramCache]: Analyzing trace with hash 936627168, now seen corresponding path program 6 times
[2020-04-18 15:33:31,903 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:31,903 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037233182]
[2020-04-18 15:33:31,903 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:31,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:31,942 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:31,942 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037233182]
[2020-04-18 15:33:31,943 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:31,943 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-04-18 15:33:31,943 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:31,944 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:31,947 INFO  L259    McrAutomatonBuilder]: Finished intersection with 18 states and 18 transitions.
[2020-04-18 15:33:31,949 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:31,977 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times.
[2020-04-18 15:33:31,977 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-04-18 15:33:31,978 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240
[2020-04-18 15:33:31,978 INFO  L87              Difference]: Start difference. First operand 382 states and 880 transitions. Second operand 4 states.
[2020-04-18 15:33:31,997 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:31,998 INFO  L93              Difference]: Finished difference Result 596 states and 1327 transitions.
[2020-04-18 15:33:31,998 INFO  L276                IsEmpty]: Start isEmpty. Operand 596 states and 1327 transitions.
[2020-04-18 15:33:31,999 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-04-18 15:33:32,000 INFO  L105                    Mcr]: ---- MCR iteration 5 ----
[2020-04-18 15:33:32,000 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 15:33:32,000 INFO  L82        PathProgramCache]: Analyzing trace with hash 967250296, now seen corresponding path program 7 times
[2020-04-18 15:33:32,000 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 15:33:32,001 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681461250]
[2020-04-18 15:33:32,001 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 15:33:32,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 15:33:32,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-04-18 15:33:32,029 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681461250]
[2020-04-18 15:33:32,029 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 15:33:32,029 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-04-18 15:33:32,030 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 15:33:32,031 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 15:33:32,035 INFO  L259    McrAutomatonBuilder]: Finished intersection with 40 states and 64 transitions.
[2020-04-18 15:33:32,035 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 15:33:32,148 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times.
[2020-04-18 15:33:32,149 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-04-18 15:33:32,149 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420
[2020-04-18 15:33:32,149 INFO  L87              Difference]: Start difference. First operand 596 states and 1327 transitions. Second operand 6 states.
[2020-04-18 15:33:32,191 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:32,191 INFO  L93              Difference]: Finished difference Result 948 states and 1949 transitions.
[2020-04-18 15:33:32,191 INFO  L276                IsEmpty]: Start isEmpty. Operand 948 states and 1949 transitions.
[2020-04-18 15:33:32,194 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 15:33:32,194 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [546909142]
[2020-04-18 15:33:32,194 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 15:33:32,195 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3
[2020-04-18 15:33:32,195 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [546909142]
[2020-04-18 15:33:32,195 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-04-18 15:33:32,195 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 15:33:32,195 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-04-18 15:33:32,196 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462
[2020-04-18 15:33:32,196 INFO  L87              Difference]: Start difference. First operand 72 states and 147 transitions. Second operand 16 states.
[2020-04-18 15:33:32,934 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 15:33:32,935 INFO  L93              Difference]: Finished difference Result 109 states and 212 transitions.
[2020-04-18 15:33:32,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2020-04-18 15:33:32,936 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 16
[2020-04-18 15:33:32,936 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 15:33:32,936 INFO  L225             Difference]: With dead ends: 109
[2020-04-18 15:33:32,936 INFO  L226             Difference]: Without dead ends: 0
[2020-04-18 15:33:32,937 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=526, Invalid=2024, Unknown=0, NotChecked=0, Total=2550
[2020-04-18 15:33:32,938 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-04-18 15:33:32,938 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-04-18 15:33:32,938 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-04-18 15:33:32,938 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-04-18 15:33:32,938 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16
[2020-04-18 15:33:32,939 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 15:33:32,939 INFO  L479      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-04-18 15:33:32,939 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-04-18 15:33:32,939 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-04-18 15:33:32,939 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 15:33:32,943 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:33:32 BasicIcfg
[2020-04-18 15:33:32,943 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-04-18 15:33:32,946 INFO  L168              Benchmark]: Toolchain (without parser) took 6713.87 ms. Allocated memory was 143.1 MB in the beginning and 297.8 MB in the end (delta: 154.7 MB). Free memory was 99.0 MB in the beginning and 102.1 MB in the end (delta: -3.1 MB). Peak memory consumption was 151.6 MB. Max. memory is 7.1 GB.
[2020-04-18 15:33:32,947 INFO  L168              Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-04-18 15:33:32,948 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 682.26 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 97.3 MB in the beginning and 157.9 MB in the end (delta: -60.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB.
[2020-04-18 15:33:32,948 INFO  L168              Benchmark]: Boogie Procedure Inliner took 43.85 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB.
[2020-04-18 15:33:32,949 INFO  L168              Benchmark]: Boogie Preprocessor took 27.52 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-04-18 15:33:32,950 INFO  L168              Benchmark]: RCFGBuilder took 477.12 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB.
[2020-04-18 15:33:32,951 INFO  L168              Benchmark]: TraceAbstraction took 5457.56 ms. Allocated memory was 201.3 MB in the beginning and 297.8 MB in the end (delta: 96.5 MB). Free memory was 131.9 MB in the beginning and 102.1 MB in the end (delta: 29.7 MB). Peak memory consumption was 126.2 MB. Max. memory is 7.1 GB.
[2020-04-18 15:33:32,955 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.17 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 682.26 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 97.3 MB in the beginning and 157.9 MB in the end (delta: -60.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 43.85 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 27.52 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 477.12 ms. Allocated memory is still 201.3 MB. Free memory was 154.4 MB in the beginning and 132.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 5457.56 ms. Allocated memory was 201.3 MB in the beginning and 297.8 MB in the end (delta: 96.5 MB). Free memory was 131.9 MB in the beginning and 102.1 MB in the end (delta: 29.7 MB). Peak memory consumption was 126.2 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: PetriNetLargeBlockEncoding benchmarks
    LbeTime: 1.6s, 77 ProgramPointsBefore, 30 ProgramPointsAfterwards, 69 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 627 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2037 CheckedPairsTotal, 54 TotalNumberOfCompositions
  - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable
    For all program executions holds that call of __VERIFIER_error() unreachable at this location
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 103 SDtfs, 266 SDslu, 255 SDs, 0 SdLazy, 294 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 188 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...