/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i


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


This is Ultimate 0.1.25-b981219
[2020-04-18 19:14:13,113 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-04-18 19:14:13,116 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-04-18 19:14:13,128 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-04-18 19:14:13,128 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-04-18 19:14:13,129 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-04-18 19:14:13,130 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-04-18 19:14:13,134 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-04-18 19:14:13,135 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-04-18 19:14:13,137 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-04-18 19:14:13,138 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-04-18 19:14:13,139 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-04-18 19:14:13,140 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-04-18 19:14:13,141 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-04-18 19:14:13,141 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-04-18 19:14:13,143 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-04-18 19:14:13,145 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-04-18 19:14:13,146 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-04-18 19:14:13,147 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-04-18 19:14:13,148 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-04-18 19:14:13,149 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-04-18 19:14:13,151 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-04-18 19:14:13,151 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-04-18 19:14:13,151 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-04-18 19:14:13,152 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-04-18 19:14:13,153 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-04-18 19:14:13,153 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-04-18 19:14:13,154 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-04-18 19:14:13,157 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-04-18 19:14:13,157 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-04-18 19:14:13,158 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-04-18 19:14:13,160 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-04-18 19:14:13,160 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-NoLbe-McrStrategy.epf
[2020-04-18 19:14:13,175 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-04-18 19:14:13,175 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-04-18 19:14:13,176 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-04-18 19:14:13,176 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-04-18 19:14:13,176 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-04-18 19:14:13,177 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-04-18 19:14:13,177 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-04-18 19:14:13,177 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-04-18 19:14:13,177 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-04-18 19:14:13,177 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-04-18 19:14:13,178 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-04-18 19:14:13,178 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-04-18 19:14:13,178 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-04-18 19:14:13,178 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-04-18 19:14:13,178 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-04-18 19:14:13,179 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-04-18 19:14:13,179 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-04-18 19:14:13,179 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-04-18 19:14:13,179 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-04-18 19:14:13,179 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-04-18 19:14:13,179 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-04-18 19:14:13,180 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-04-18 19:14:13,180 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-04-18 19:14:13,180 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-04-18 19:14:13,180 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-04-18 19:14:13,181 INFO  L138        SettingsManager]:  * Trace refinement strategy=MCR
[2020-04-18 19:14:13,181 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-04-18 19:14:13,181 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2020-04-18 19:14:13,181 INFO  L138        SettingsManager]:  * Trace refinement strategy used in MCR=CAMEL
[2020-04-18 19:14:13,181 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-04-18 19:14:13,182 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2020-04-18 19:14:13,453 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-04-18 19:14:13,475 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-04-18 19:14:13,479 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-04-18 19:14:13,481 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-04-18 19:14:13,481 INFO  L275        PluginConnector]: CDTParser initialized
[2020-04-18 19:14:13,482 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i
[2020-04-18 19:14:13,556 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76d97590/acc486fceeb242168c3fb0bc570b4fc1/FLAGe24b76933
[2020-04-18 19:14:14,180 INFO  L306              CDTParser]: Found 1 translation units.
[2020-04-18 19:14:14,181 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i
[2020-04-18 19:14:14,201 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76d97590/acc486fceeb242168c3fb0bc570b4fc1/FLAGe24b76933
[2020-04-18 19:14:14,394 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76d97590/acc486fceeb242168c3fb0bc570b4fc1
[2020-04-18 19:14:14,407 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-04-18 19:14:14,430 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2020-04-18 19:14:14,431 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-04-18 19:14:14,431 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-04-18 19:14:14,435 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-04-18 19:14:14,436 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:14:14" (1/1) ...
[2020-04-18 19:14:14,439 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@640ced69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:14, skipping insertion in model container
[2020-04-18 19:14:14,439 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:14:14" (1/1) ...
[2020-04-18 19:14:14,447 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-04-18 19:14:14,498 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-04-18 19:14:14,979 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-04-18 19:14:14,995 INFO  L203         MainTranslator]: Completed pre-run
[2020-04-18 19:14:15,051 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-04-18 19:14:15,144 INFO  L208         MainTranslator]: Completed translation
[2020-04-18 19:14:15,144 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15 WrapperNode
[2020-04-18 19:14:15,145 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-04-18 19:14:15,145 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2020-04-18 19:14:15,146 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2020-04-18 19:14:15,146 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2020-04-18 19:14:15,156 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15" (1/1) ...
[2020-04-18 19:14:15,186 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15" (1/1) ...
[2020-04-18 19:14:15,210 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2020-04-18 19:14:15,210 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-04-18 19:14:15,210 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-04-18 19:14:15,211 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-04-18 19:14:15,219 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15" (1/1) ...
[2020-04-18 19:14:15,220 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15" (1/1) ...
[2020-04-18 19:14:15,222 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15" (1/1) ...
[2020-04-18 19:14:15,223 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15" (1/1) ...
[2020-04-18 19:14:15,230 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15" (1/1) ...
[2020-04-18 19:14:15,238 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15" (1/1) ...
[2020-04-18 19:14:15,240 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15" (1/1) ...
[2020-04-18 19:14:15,244 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-04-18 19:14:15,250 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-04-18 19:14:15,251 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-04-18 19:14:15,251 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-04-18 19:14:15,252 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15" (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 19:14:15,314 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-04-18 19:14:15,314 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2020-04-18 19:14:15,314 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-04-18 19:14:15,315 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-04-18 19:14:15,316 INFO  L130     BoogieDeclarations]: Found specification of procedure P0
[2020-04-18 19:14:15,316 INFO  L138     BoogieDeclarations]: Found implementation of procedure P0
[2020-04-18 19:14:15,317 INFO  L130     BoogieDeclarations]: Found specification of procedure P1
[2020-04-18 19:14:15,318 INFO  L138     BoogieDeclarations]: Found implementation of procedure P1
[2020-04-18 19:14:15,319 INFO  L130     BoogieDeclarations]: Found specification of procedure P2
[2020-04-18 19:14:15,319 INFO  L138     BoogieDeclarations]: Found implementation of procedure P2
[2020-04-18 19:14:15,319 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2020-04-18 19:14:15,319 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-04-18 19:14:15,320 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-04-18 19:14:15,321 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 19:14:15,719 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-04-18 19:14:15,719 INFO  L295             CfgBuilder]: Removed 8 assume(true) statements.
[2020-04-18 19:14:15,723 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:14:15 BoogieIcfgContainer
[2020-04-18 19:14:15,724 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-04-18 19:14:15,725 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-04-18 19:14:15,725 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-04-18 19:14:15,728 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-04-18 19:14:15,729 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:14:14" (1/3) ...
[2020-04-18 19:14:15,729 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32820f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:14:15, skipping insertion in model container
[2020-04-18 19:14:15,730 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:15" (2/3) ...
[2020-04-18 19:14:15,730 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32820f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:14:15, skipping insertion in model container
[2020-04-18 19:14:15,730 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:14:15" (3/3) ...
[2020-04-18 19:14:15,732 INFO  L109   eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i
[2020-04-18 19:14:15,742 WARN  L146   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2020-04-18 19:14:15,743 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-04-18 19:14:15,750 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-04-18 19:14:15,751 INFO  L340   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2020-04-18 19:14:15,776 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,776 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,777 WARN  L315   ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,777 WARN  L315   ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,778 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,778 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,778 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,779 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,779 WARN  L315   ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,780 WARN  L315   ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,780 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,780 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,781 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,781 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,781 WARN  L315   ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,781 WARN  L315   ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,782 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,782 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,786 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,787 WARN  L315   ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,787 WARN  L315   ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,787 WARN  L315   ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,802 WARN  L315   ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,803 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,803 WARN  L315   ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,803 WARN  L315   ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,814 WARN  L315   ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,815 WARN  L315   ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,815 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,815 WARN  L315   ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-04-18 19:14:15,832 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2020-04-18 19:14:15,848 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-04-18 19:14:15,848 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-04-18 19:14:15,848 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-04-18 19:14:15,848 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-04-18 19:14:15,848 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-04-18 19:14:15,849 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-04-18 19:14:15,849 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-04-18 19:14:15,849 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-04-18 19:14:15,861 INFO  L100   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow
[2020-04-18 19:14:16,367 INFO  L122   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states.
[2020-04-18 19:14:16,369 INFO  L276                IsEmpty]: Start isEmpty. Operand 8472 states.
[2020-04-18 19:14:16,397 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2020-04-18 19:14:16,397 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 19:14:16,398 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 19:14:16,399 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 19:14:16,405 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:16,406 INFO  L82        PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times
[2020-04-18 19:14:16,413 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 19:14:16,414 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [514040801]
[2020-04-18 19:14:16,430 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:16,446 INFO  L259    McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions.
[2020-04-18 19:14:16,448 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states.
[2020-04-18 19:14:16,449 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2020-04-18 19:14:16,449 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 19:14:16,450 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:16,450 INFO  L82        PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 2 times
[2020-04-18 19:14:16,454 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:16,454 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827021426]
[2020-04-18 19:14:16,455 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:16,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:16,926 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 19:14:16,927 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827021426]
[2020-04-18 19:14:16,928 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:16,928 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-04-18 19:14:16,930 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:16,933 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:16,940 INFO  L259    McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions.
[2020-04-18 19:14:16,940 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:17,002 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times.
[2020-04-18 19:14:17,006 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-04-18 19:14:17,007 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-04-18 19:14:17,008 INFO  L87              Difference]: Start difference. First operand 37 states. Second operand 6 states.
[2020-04-18 19:14:17,138 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:17,138 INFO  L93              Difference]: Finished difference Result 37 states and 36 transitions.
[2020-04-18 19:14:17,138 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions.
[2020-04-18 19:14:17,139 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 19:14:17,140 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [514040801]
[2020-04-18 19:14:17,140 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 19:14:17,141 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-04-18 19:14:17,141 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [514040801]
[2020-04-18 19:14:17,142 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-04-18 19:14:17,143 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 19:14:17,148 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-04-18 19:14:17,148 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2020-04-18 19:14:17,148 INFO  L87              Difference]: Start difference. First operand 8472 states. Second operand 6 states.
[2020-04-18 19:14:17,596 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:17,597 INFO  L93              Difference]: Finished difference Result 19788 states and 68292 transitions.
[2020-04-18 19:14:17,597 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-04-18 19:14:17,599 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 36
[2020-04-18 19:14:17,599 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 19:14:17,681 INFO  L225             Difference]: With dead ends: 19788
[2020-04-18 19:14:17,681 INFO  L226             Difference]: Without dead ends: 6510
[2020-04-18 19:14:17,683 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2020-04-18 19:14:17,744 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6510 states.
[2020-04-18 19:14:18,048 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 5388.
[2020-04-18 19:14:18,050 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5388 states.
[2020-04-18 19:14:18,098 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 18245 transitions.
[2020-04-18 19:14:18,100 INFO  L78                 Accepts]: Start accepts. Automaton has 5388 states and 18245 transitions. Word has length 36
[2020-04-18 19:14:18,101 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 19:14:18,101 INFO  L479      AbstractCegarLoop]: Abstraction has 5388 states and 18245 transitions.
[2020-04-18 19:14:18,101 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-04-18 19:14:18,102 INFO  L276                IsEmpty]: Start isEmpty. Operand 5388 states and 18245 transitions.
[2020-04-18 19:14:18,113 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-04-18 19:14:18,113 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 19:14:18,113 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 19:14:18,114 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 19:14:18,114 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:18,114 INFO  L82        PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 1 times
[2020-04-18 19:14:18,114 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 19:14:18,115 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [2088203000]
[2020-04-18 19:14:18,116 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:18,118 INFO  L259    McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions.
[2020-04-18 19:14:18,120 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states.
[2020-04-18 19:14:18,120 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-04-18 19:14:18,121 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 19:14:18,121 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:18,121 INFO  L82        PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 2 times
[2020-04-18 19:14:18,121 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:18,122 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668876548]
[2020-04-18 19:14:18,122 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:18,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:18,351 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 19:14:18,352 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668876548]
[2020-04-18 19:14:18,352 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:18,353 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:18,353 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:18,357 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:18,365 INFO  L259    McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions.
[2020-04-18 19:14:18,365 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:18,421 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times.
[2020-04-18 19:14:18,422 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:18,423 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-04-18 19:14:18,423 INFO  L87              Difference]: Start difference. First operand 79 states. Second operand 7 states.
[2020-04-18 19:14:18,509 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:18,510 INFO  L93              Difference]: Finished difference Result 79 states and 118 transitions.
[2020-04-18 19:14:18,510 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions.
[2020-04-18 19:14:18,510 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 19:14:18,511 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2088203000]
[2020-04-18 19:14:18,512 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 19:14:18,512 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-04-18 19:14:18,512 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2088203000]
[2020-04-18 19:14:18,513 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-04-18 19:14:18,513 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 19:14:18,513 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:18,514 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2020-04-18 19:14:18,514 INFO  L87              Difference]: Start difference. First operand 5388 states and 18245 transitions. Second operand 7 states.
[2020-04-18 19:14:18,811 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:18,812 INFO  L93              Difference]: Finished difference Result 7402 states and 24613 transitions.
[2020-04-18 19:14:18,812 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-04-18 19:14:18,812 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 38
[2020-04-18 19:14:18,813 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 19:14:18,855 INFO  L225             Difference]: With dead ends: 7402
[2020-04-18 19:14:18,856 INFO  L226             Difference]: Without dead ends: 5910
[2020-04-18 19:14:18,858 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210
[2020-04-18 19:14:18,993 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5910 states.
[2020-04-18 19:14:19,133 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 5013.
[2020-04-18 19:14:19,133 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5013 states.
[2020-04-18 19:14:19,152 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 16835 transitions.
[2020-04-18 19:14:19,152 INFO  L78                 Accepts]: Start accepts. Automaton has 5013 states and 16835 transitions. Word has length 38
[2020-04-18 19:14:19,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 19:14:19,154 INFO  L479      AbstractCegarLoop]: Abstraction has 5013 states and 16835 transitions.
[2020-04-18 19:14:19,154 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-04-18 19:14:19,154 INFO  L276                IsEmpty]: Start isEmpty. Operand 5013 states and 16835 transitions.
[2020-04-18 19:14:19,171 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-04-18 19:14:19,172 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 19:14:19,172 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 19:14:19,172 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 19:14:19,172 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:19,173 INFO  L82        PathProgramCache]: Analyzing trace with hash 1958490107, now seen corresponding path program 1 times
[2020-04-18 19:14:19,173 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 19:14:19,173 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [231184388]
[2020-04-18 19:14:19,174 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:19,177 INFO  L259    McrAutomatonBuilder]: Finished intersection with 76 states and 111 transitions.
[2020-04-18 19:14:19,177 INFO  L276                IsEmpty]: Start isEmpty. Operand 76 states.
[2020-04-18 19:14:19,178 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-04-18 19:14:19,178 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 19:14:19,179 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:19,179 INFO  L82        PathProgramCache]: Analyzing trace with hash -546181317, now seen corresponding path program 2 times
[2020-04-18 19:14:19,179 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:19,179 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721602932]
[2020-04-18 19:14:19,180 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:19,202 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:19,376 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 19:14:19,377 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721602932]
[2020-04-18 19:14:19,378 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:19,378 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:19,378 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:19,382 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:19,388 INFO  L259    McrAutomatonBuilder]: Finished intersection with 62 states and 83 transitions.
[2020-04-18 19:14:19,389 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:19,465 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times.
[2020-04-18 19:14:19,465 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:19,466 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-04-18 19:14:19,466 INFO  L87              Difference]: Start difference. First operand 76 states. Second operand 7 states.
[2020-04-18 19:14:19,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:19,691 INFO  L93              Difference]: Finished difference Result 82 states and 116 transitions.
[2020-04-18 19:14:19,692 INFO  L276                IsEmpty]: Start isEmpty. Operand 82 states and 116 transitions.
[2020-04-18 19:14:19,692 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-04-18 19:14:19,692 INFO  L105                    Mcr]: ---- MCR iteration 1 ----
[2020-04-18 19:14:19,693 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:19,693 INFO  L82        PathProgramCache]: Analyzing trace with hash 1958490107, now seen corresponding path program 3 times
[2020-04-18 19:14:19,693 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:19,694 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075099627]
[2020-04-18 19:14:19,694 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:19,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:19,817 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 19:14:19,818 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075099627]
[2020-04-18 19:14:19,818 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:19,818 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:19,818 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:19,822 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:19,827 INFO  L259    McrAutomatonBuilder]: Finished intersection with 58 states and 75 transitions.
[2020-04-18 19:14:19,828 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:19,951 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times.
[2020-04-18 19:14:19,953 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-04-18 19:14:19,953 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380
[2020-04-18 19:14:19,954 INFO  L87              Difference]: Start difference. First operand 82 states and 116 transitions. Second operand 11 states.
[2020-04-18 19:14:20,029 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:20,029 INFO  L93              Difference]: Finished difference Result 82 states and 116 transitions.
[2020-04-18 19:14:20,029 INFO  L276                IsEmpty]: Start isEmpty. Operand 82 states and 116 transitions.
[2020-04-18 19:14:20,030 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 19:14:20,030 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [231184388]
[2020-04-18 19:14:20,031 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 19:14:20,031 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-04-18 19:14:20,031 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [231184388]
[2020-04-18 19:14:20,032 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-04-18 19:14:20,032 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 19:14:20,032 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-04-18 19:14:20,033 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506
[2020-04-18 19:14:20,033 INFO  L87              Difference]: Start difference. First operand 5013 states and 16835 transitions. Second operand 12 states.
[2020-04-18 19:14:20,659 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:20,659 INFO  L93              Difference]: Finished difference Result 6430 states and 21251 transitions.
[2020-04-18 19:14:20,660 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-04-18 19:14:20,660 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 39
[2020-04-18 19:14:20,660 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 19:14:20,698 INFO  L225             Difference]: With dead ends: 6430
[2020-04-18 19:14:20,698 INFO  L226             Difference]: Without dead ends: 5022
[2020-04-18 19:14:20,699 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552
[2020-04-18 19:14:20,721 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5022 states.
[2020-04-18 19:14:20,820 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5022 to 3853.
[2020-04-18 19:14:20,820 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3853 states.
[2020-04-18 19:14:20,834 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 12861 transitions.
[2020-04-18 19:14:20,835 INFO  L78                 Accepts]: Start accepts. Automaton has 3853 states and 12861 transitions. Word has length 39
[2020-04-18 19:14:20,835 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 19:14:20,835 INFO  L479      AbstractCegarLoop]: Abstraction has 3853 states and 12861 transitions.
[2020-04-18 19:14:20,835 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-04-18 19:14:20,836 INFO  L276                IsEmpty]: Start isEmpty. Operand 3853 states and 12861 transitions.
[2020-04-18 19:14:20,845 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-04-18 19:14:20,846 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 19:14:20,846 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 19:14:20,846 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 19:14:20,846 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:20,847 INFO  L82        PathProgramCache]: Analyzing trace with hash 1766768090, now seen corresponding path program 1 times
[2020-04-18 19:14:20,847 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 19:14:20,847 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [1432674801]
[2020-04-18 19:14:20,849 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:20,852 INFO  L259    McrAutomatonBuilder]: Finished intersection with 196 states and 421 transitions.
[2020-04-18 19:14:20,854 INFO  L276                IsEmpty]: Start isEmpty. Operand 196 states.
[2020-04-18 19:14:20,855 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-04-18 19:14:20,855 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 19:14:20,855 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:20,855 INFO  L82        PathProgramCache]: Analyzing trace with hash -737903334, now seen corresponding path program 2 times
[2020-04-18 19:14:20,856 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:20,856 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106047614]
[2020-04-18 19:14:20,856 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:20,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:20,987 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 19:14:20,988 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106047614]
[2020-04-18 19:14:20,988 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:20,988 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:20,988 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:20,992 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:21,004 INFO  L259    McrAutomatonBuilder]: Finished intersection with 106 states and 181 transitions.
[2020-04-18 19:14:21,004 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:21,072 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times.
[2020-04-18 19:14:21,072 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:21,073 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-04-18 19:14:21,073 INFO  L87              Difference]: Start difference. First operand 196 states. Second operand 7 states.
[2020-04-18 19:14:21,207 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:21,208 INFO  L93              Difference]: Finished difference Result 214 states and 448 transitions.
[2020-04-18 19:14:21,208 INFO  L276                IsEmpty]: Start isEmpty. Operand 214 states and 448 transitions.
[2020-04-18 19:14:21,209 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-04-18 19:14:21,209 INFO  L105                    Mcr]: ---- MCR iteration 1 ----
[2020-04-18 19:14:21,210 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:21,210 INFO  L82        PathProgramCache]: Analyzing trace with hash 1766768090, now seen corresponding path program 3 times
[2020-04-18 19:14:21,210 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:21,210 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202237201]
[2020-04-18 19:14:21,211 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:21,242 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:21,373 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 19:14:21,374 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202237201]
[2020-04-18 19:14:21,374 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:21,374 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-04-18 19:14:21,375 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:21,378 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:21,392 INFO  L259    McrAutomatonBuilder]: Finished intersection with 116 states and 213 transitions.
[2020-04-18 19:14:21,392 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:21,647 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times.
[2020-04-18 19:14:21,647 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-04-18 19:14:21,648 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420
[2020-04-18 19:14:21,648 INFO  L87              Difference]: Start difference. First operand 214 states and 448 transitions. Second operand 16 states.
[2020-04-18 19:14:21,852 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:21,853 INFO  L93              Difference]: Finished difference Result 214 states and 448 transitions.
[2020-04-18 19:14:21,853 INFO  L276                IsEmpty]: Start isEmpty. Operand 214 states and 448 transitions.
[2020-04-18 19:14:21,853 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 19:14:21,854 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1432674801]
[2020-04-18 19:14:21,854 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 19:14:21,854 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-04-18 19:14:21,855 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1432674801]
[2020-04-18 19:14:21,855 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-04-18 19:14:21,855 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 19:14:21,855 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-04-18 19:14:21,856 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812
[2020-04-18 19:14:21,856 INFO  L87              Difference]: Start difference. First operand 3853 states and 12861 transitions. Second operand 16 states.
[2020-04-18 19:14:21,998 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:21,999 INFO  L93              Difference]: Finished difference Result 5253 states and 17451 transitions.
[2020-04-18 19:14:21,999 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-04-18 19:14:21,999 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 41
[2020-04-18 19:14:22,000 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 19:14:22,010 INFO  L225             Difference]: With dead ends: 5253
[2020-04-18 19:14:22,010 INFO  L226             Difference]: Without dead ends: 2646
[2020-04-18 19:14:22,010 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812
[2020-04-18 19:14:22,022 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2646 states.
[2020-04-18 19:14:22,075 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2646.
[2020-04-18 19:14:22,075 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2646 states.
[2020-04-18 19:14:22,084 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 8589 transitions.
[2020-04-18 19:14:22,085 INFO  L78                 Accepts]: Start accepts. Automaton has 2646 states and 8589 transitions. Word has length 41
[2020-04-18 19:14:22,085 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 19:14:22,085 INFO  L479      AbstractCegarLoop]: Abstraction has 2646 states and 8589 transitions.
[2020-04-18 19:14:22,085 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-04-18 19:14:22,086 INFO  L276                IsEmpty]: Start isEmpty. Operand 2646 states and 8589 transitions.
[2020-04-18 19:14:22,092 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-04-18 19:14:22,092 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 19:14:22,093 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 19:14:22,093 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 19:14:22,093 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:22,093 INFO  L82        PathProgramCache]: Analyzing trace with hash 372366423, now seen corresponding path program 1 times
[2020-04-18 19:14:22,094 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 19:14:22,094 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [875811317]
[2020-04-18 19:14:22,095 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:22,106 INFO  L259    McrAutomatonBuilder]: Finished intersection with 544 states and 1559 transitions.
[2020-04-18 19:14:22,109 INFO  L276                IsEmpty]: Start isEmpty. Operand 544 states.
[2020-04-18 19:14:22,112 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-04-18 19:14:22,112 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 19:14:22,112 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:22,112 INFO  L82        PathProgramCache]: Analyzing trace with hash 1838482487, now seen corresponding path program 2 times
[2020-04-18 19:14:22,113 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:22,113 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936357350]
[2020-04-18 19:14:22,113 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:22,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:22,208 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 19:14:22,209 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936357350]
[2020-04-18 19:14:22,209 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:22,209 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-04-18 19:14:22,210 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:22,213 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:22,247 INFO  L259    McrAutomatonBuilder]: Finished intersection with 226 states and 529 transitions.
[2020-04-18 19:14:22,247 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:22,346 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times.
[2020-04-18 19:14:22,346 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:22,347 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-04-18 19:14:22,347 INFO  L87              Difference]: Start difference. First operand 544 states. Second operand 7 states.
[2020-04-18 19:14:22,545 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:22,545 INFO  L93              Difference]: Finished difference Result 722 states and 1906 transitions.
[2020-04-18 19:14:22,545 INFO  L276                IsEmpty]: Start isEmpty. Operand 722 states and 1906 transitions.
[2020-04-18 19:14:22,547 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-04-18 19:14:22,548 INFO  L105                    Mcr]: ---- MCR iteration 1 ----
[2020-04-18 19:14:22,548 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:22,548 INFO  L82        PathProgramCache]: Analyzing trace with hash 1138361659, now seen corresponding path program 3 times
[2020-04-18 19:14:22,548 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:22,549 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412201274]
[2020-04-18 19:14:22,549 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:22,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:22,649 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 19:14:22,650 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412201274]
[2020-04-18 19:14:22,650 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:22,650 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:22,650 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:22,654 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:22,698 INFO  L259    McrAutomatonBuilder]: Finished intersection with 244 states and 576 transitions.
[2020-04-18 19:14:22,698 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:22,717 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times.
[2020-04-18 19:14:22,718 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:22,718 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156
[2020-04-18 19:14:22,718 INFO  L87              Difference]: Start difference. First operand 722 states and 1906 transitions. Second operand 7 states.
[2020-04-18 19:14:22,946 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:22,947 INFO  L93              Difference]: Finished difference Result 728 states and 1911 transitions.
[2020-04-18 19:14:22,947 INFO  L276                IsEmpty]: Start isEmpty. Operand 728 states and 1911 transitions.
[2020-04-18 19:14:22,951 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-04-18 19:14:22,951 INFO  L105                    Mcr]: ---- MCR iteration 2 ----
[2020-04-18 19:14:22,951 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:22,951 INFO  L82        PathProgramCache]: Analyzing trace with hash -1586902905, now seen corresponding path program 4 times
[2020-04-18 19:14:22,952 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:22,952 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386544116]
[2020-04-18 19:14:22,953 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:22,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:23,101 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 19:14:23,102 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386544116]
[2020-04-18 19:14:23,102 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:23,102 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:23,102 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:23,108 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:23,147 INFO  L259    McrAutomatonBuilder]: Finished intersection with 204 states and 462 transitions.
[2020-04-18 19:14:23,148 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:23,241 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times.
[2020-04-18 19:14:23,241 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-04-18 19:14:23,242 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306
[2020-04-18 19:14:23,242 INFO  L87              Difference]: Start difference. First operand 728 states and 1911 transitions. Second operand 9 states.
[2020-04-18 19:14:23,465 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:23,466 INFO  L93              Difference]: Finished difference Result 728 states and 1911 transitions.
[2020-04-18 19:14:23,466 INFO  L276                IsEmpty]: Start isEmpty. Operand 728 states and 1911 transitions.
[2020-04-18 19:14:23,468 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 19:14:23,468 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [875811317]
[2020-04-18 19:14:23,469 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 19:14:23,469 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-04-18 19:14:23,469 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [875811317]
[2020-04-18 19:14:23,470 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-04-18 19:14:23,470 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 19:14:23,471 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-04-18 19:14:23,471 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420
[2020-04-18 19:14:23,471 INFO  L87              Difference]: Start difference. First operand 2646 states and 8589 transitions. Second operand 10 states.
[2020-04-18 19:14:23,553 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:23,553 INFO  L93              Difference]: Finished difference Result 2926 states and 9423 transitions.
[2020-04-18 19:14:23,553 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-04-18 19:14:23,553 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 43
[2020-04-18 19:14:23,554 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 19:14:23,565 INFO  L225             Difference]: With dead ends: 2926
[2020-04-18 19:14:23,565 INFO  L226             Difference]: Without dead ends: 2526
[2020-04-18 19:14:23,566 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420
[2020-04-18 19:14:23,577 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2526 states.
[2020-04-18 19:14:23,633 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2386.
[2020-04-18 19:14:23,633 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2386 states.
[2020-04-18 19:14:23,640 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 7686 transitions.
[2020-04-18 19:14:23,641 INFO  L78                 Accepts]: Start accepts. Automaton has 2386 states and 7686 transitions. Word has length 43
[2020-04-18 19:14:23,641 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 19:14:23,641 INFO  L479      AbstractCegarLoop]: Abstraction has 2386 states and 7686 transitions.
[2020-04-18 19:14:23,641 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-04-18 19:14:23,642 INFO  L276                IsEmpty]: Start isEmpty. Operand 2386 states and 7686 transitions.
[2020-04-18 19:14:23,647 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-04-18 19:14:23,647 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 19:14:23,647 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 19:14:23,648 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 19:14:23,648 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:23,648 INFO  L82        PathProgramCache]: Analyzing trace with hash 419674973, now seen corresponding path program 1 times
[2020-04-18 19:14:23,648 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 19:14:23,649 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [497831695]
[2020-04-18 19:14:23,650 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:23,664 INFO  L259    McrAutomatonBuilder]: Finished intersection with 700 states and 2080 transitions.
[2020-04-18 19:14:23,668 INFO  L276                IsEmpty]: Start isEmpty. Operand 700 states.
[2020-04-18 19:14:23,671 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-04-18 19:14:23,671 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 19:14:23,671 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:23,671 INFO  L82        PathProgramCache]: Analyzing trace with hash -1219733507, now seen corresponding path program 2 times
[2020-04-18 19:14:23,672 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:23,672 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119665713]
[2020-04-18 19:14:23,672 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:23,691 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:23,798 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 19:14:23,799 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119665713]
[2020-04-18 19:14:23,799 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:23,799 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-04-18 19:14:23,800 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:23,803 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:23,836 INFO  L259    McrAutomatonBuilder]: Finished intersection with 232 states and 540 transitions.
[2020-04-18 19:14:23,836 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:23,916 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times.
[2020-04-18 19:14:23,917 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:23,922 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-04-18 19:14:23,923 INFO  L87              Difference]: Start difference. First operand 700 states. Second operand 7 states.
[2020-04-18 19:14:24,122 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:24,123 INFO  L93              Difference]: Finished difference Result 1001 states and 2763 transitions.
[2020-04-18 19:14:24,123 INFO  L276                IsEmpty]: Start isEmpty. Operand 1001 states and 2763 transitions.
[2020-04-18 19:14:24,125 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-04-18 19:14:24,125 INFO  L105                    Mcr]: ---- MCR iteration 1 ----
[2020-04-18 19:14:24,125 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:24,126 INFO  L82        PathProgramCache]: Analyzing trace with hash -651472579, now seen corresponding path program 3 times
[2020-04-18 19:14:24,126 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:24,126 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773550124]
[2020-04-18 19:14:24,126 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:24,148 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:24,232 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 19:14:24,233 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773550124]
[2020-04-18 19:14:24,234 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:24,234 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:24,234 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:24,237 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:24,302 INFO  L259    McrAutomatonBuilder]: Finished intersection with 228 states and 532 transitions.
[2020-04-18 19:14:24,303 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:24,329 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times.
[2020-04-18 19:14:24,329 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:24,330 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-04-18 19:14:24,330 INFO  L87              Difference]: Start difference. First operand 1001 states and 2763 transitions. Second operand 7 states.
[2020-04-18 19:14:24,515 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:24,515 INFO  L93              Difference]: Finished difference Result 1139 states and 2979 transitions.
[2020-04-18 19:14:24,515 INFO  L276                IsEmpty]: Start isEmpty. Operand 1139 states and 2979 transitions.
[2020-04-18 19:14:24,518 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-04-18 19:14:24,518 INFO  L105                    Mcr]: ---- MCR iteration 2 ----
[2020-04-18 19:14:24,518 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:24,518 INFO  L82        PathProgramCache]: Analyzing trace with hash -32498259, now seen corresponding path program 4 times
[2020-04-18 19:14:24,518 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:24,519 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25723664]
[2020-04-18 19:14:24,519 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:24,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:24,610 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 19:14:24,610 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25723664]
[2020-04-18 19:14:24,611 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:24,611 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:24,611 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:24,614 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:24,646 INFO  L259    McrAutomatonBuilder]: Finished intersection with 210 states and 473 transitions.
[2020-04-18 19:14:24,646 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:24,731 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times.
[2020-04-18 19:14:24,731 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-04-18 19:14:24,732 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506
[2020-04-18 19:14:24,732 INFO  L87              Difference]: Start difference. First operand 1139 states and 2979 transitions. Second operand 9 states.
[2020-04-18 19:14:25,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:25,036 INFO  L93              Difference]: Finished difference Result 1166 states and 3004 transitions.
[2020-04-18 19:14:25,036 INFO  L276                IsEmpty]: Start isEmpty. Operand 1166 states and 3004 transitions.
[2020-04-18 19:14:25,039 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-04-18 19:14:25,039 INFO  L105                    Mcr]: ---- MCR iteration 3 ----
[2020-04-18 19:14:25,039 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:25,040 INFO  L82        PathProgramCache]: Analyzing trace with hash 535762669, now seen corresponding path program 5 times
[2020-04-18 19:14:25,040 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:25,040 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542074175]
[2020-04-18 19:14:25,040 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:25,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:25,118 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 19:14:25,118 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542074175]
[2020-04-18 19:14:25,119 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:25,119 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:25,119 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:25,122 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:25,154 INFO  L259    McrAutomatonBuilder]: Finished intersection with 220 states and 505 transitions.
[2020-04-18 19:14:25,154 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:25,229 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times.
[2020-04-18 19:14:25,229 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-04-18 19:14:25,229 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756
[2020-04-18 19:14:25,230 INFO  L87              Difference]: Start difference. First operand 1166 states and 3004 transitions. Second operand 9 states.
[2020-04-18 19:14:25,525 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:25,525 INFO  L93              Difference]: Finished difference Result 1311 states and 3264 transitions.
[2020-04-18 19:14:25,525 INFO  L276                IsEmpty]: Start isEmpty. Operand 1311 states and 3264 transitions.
[2020-04-18 19:14:25,528 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-04-18 19:14:25,528 INFO  L105                    Mcr]: ---- MCR iteration 4 ----
[2020-04-18 19:14:25,529 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:25,529 INFO  L82        PathProgramCache]: Analyzing trace with hash -1881072769, now seen corresponding path program 6 times
[2020-04-18 19:14:25,529 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:25,530 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038994294]
[2020-04-18 19:14:25,530 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:25,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:25,609 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 19:14:25,610 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038994294]
[2020-04-18 19:14:25,610 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:25,610 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-04-18 19:14:25,610 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:25,614 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:25,644 INFO  L259    McrAutomatonBuilder]: Finished intersection with 209 states and 477 transitions.
[2020-04-18 19:14:25,644 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:25,729 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times.
[2020-04-18 19:14:25,729 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-04-18 19:14:25,730 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1183, Unknown=0, NotChecked=0, Total=1482
[2020-04-18 19:14:25,730 INFO  L87              Difference]: Start difference. First operand 1311 states and 3264 transitions. Second operand 6 states.
[2020-04-18 19:14:25,812 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:25,813 INFO  L93              Difference]: Finished difference Result 1311 states and 3264 transitions.
[2020-04-18 19:14:25,813 INFO  L276                IsEmpty]: Start isEmpty. Operand 1311 states and 3264 transitions.
[2020-04-18 19:14:25,815 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 19:14:25,816 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [497831695]
[2020-04-18 19:14:25,816 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 19:14:25,816 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-04-18 19:14:25,816 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [497831695]
[2020-04-18 19:14:25,816 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-04-18 19:14:25,817 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 19:14:25,817 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-04-18 19:14:25,818 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1405, Unknown=0, NotChecked=0, Total=1722
[2020-04-18 19:14:25,818 INFO  L87              Difference]: Start difference. First operand 2386 states and 7686 transitions. Second operand 17 states.
[2020-04-18 19:14:27,212 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:27,212 INFO  L93              Difference]: Finished difference Result 6200 states and 19753 transitions.
[2020-04-18 19:14:27,213 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. 
[2020-04-18 19:14:27,213 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 44
[2020-04-18 19:14:27,213 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 19:14:27,218 INFO  L225             Difference]: With dead ends: 6200
[2020-04-18 19:14:27,218 INFO  L226             Difference]: Without dead ends: 1474
[2020-04-18 19:14:27,220 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=811, Invalid=4889, Unknown=0, NotChecked=0, Total=5700
[2020-04-18 19:14:27,226 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1474 states.
[2020-04-18 19:14:27,251 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474.
[2020-04-18 19:14:27,252 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1474 states.
[2020-04-18 19:14:27,256 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 4613 transitions.
[2020-04-18 19:14:27,256 INFO  L78                 Accepts]: Start accepts. Automaton has 1474 states and 4613 transitions. Word has length 44
[2020-04-18 19:14:27,256 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 19:14:27,256 INFO  L479      AbstractCegarLoop]: Abstraction has 1474 states and 4613 transitions.
[2020-04-18 19:14:27,256 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-04-18 19:14:27,257 INFO  L276                IsEmpty]: Start isEmpty. Operand 1474 states and 4613 transitions.
[2020-04-18 19:14:27,259 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-04-18 19:14:27,259 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 19:14:27,260 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 19:14:27,260 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 19:14:27,260 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:27,260 INFO  L82        PathProgramCache]: Analyzing trace with hash -211044402, now seen corresponding path program 1 times
[2020-04-18 19:14:27,260 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 19:14:27,261 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [2116887396]
[2020-04-18 19:14:27,262 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:27,279 INFO  L259    McrAutomatonBuilder]: Finished intersection with 868 states and 2633 transitions.
[2020-04-18 19:14:27,285 INFO  L276                IsEmpty]: Start isEmpty. Operand 868 states.
[2020-04-18 19:14:27,287 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-04-18 19:14:27,287 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 19:14:27,288 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:27,288 INFO  L82        PathProgramCache]: Analyzing trace with hash -572118500, now seen corresponding path program 2 times
[2020-04-18 19:14:27,288 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:27,288 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410428498]
[2020-04-18 19:14:27,288 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:27,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:27,375 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 19:14:27,376 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410428498]
[2020-04-18 19:14:27,376 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:27,376 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-04-18 19:14:27,377 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:27,380 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:27,395 INFO  L259    McrAutomatonBuilder]: Finished intersection with 150 states and 291 transitions.
[2020-04-18 19:14:27,395 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:27,465 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times.
[2020-04-18 19:14:27,465 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:27,465 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-04-18 19:14:27,465 INFO  L87              Difference]: Start difference. First operand 868 states. Second operand 7 states.
[2020-04-18 19:14:27,663 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:27,663 INFO  L93              Difference]: Finished difference Result 1311 states and 3703 transitions.
[2020-04-18 19:14:27,664 INFO  L276                IsEmpty]: Start isEmpty. Operand 1311 states and 3703 transitions.
[2020-04-18 19:14:27,666 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-04-18 19:14:27,666 INFO  L105                    Mcr]: ---- MCR iteration 1 ----
[2020-04-18 19:14:27,666 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:27,667 INFO  L82        PathProgramCache]: Analyzing trace with hash -3857572, now seen corresponding path program 3 times
[2020-04-18 19:14:27,667 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:27,667 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447078700]
[2020-04-18 19:14:27,667 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:27,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:27,744 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 19:14:27,745 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447078700]
[2020-04-18 19:14:27,745 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:27,745 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:27,745 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:27,749 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:27,768 INFO  L259    McrAutomatonBuilder]: Finished intersection with 150 states and 293 transitions.
[2020-04-18 19:14:27,769 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:27,793 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times.
[2020-04-18 19:14:27,793 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:27,794 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-04-18 19:14:27,794 INFO  L87              Difference]: Start difference. First operand 1311 states and 3703 transitions. Second operand 7 states.
[2020-04-18 19:14:28,005 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:28,006 INFO  L93              Difference]: Finished difference Result 1524 states and 4087 transitions.
[2020-04-18 19:14:28,006 INFO  L276                IsEmpty]: Start isEmpty. Operand 1524 states and 4087 transitions.
[2020-04-18 19:14:28,009 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-04-18 19:14:28,009 INFO  L105                    Mcr]: ---- MCR iteration 2 ----
[2020-04-18 19:14:28,009 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:28,009 INFO  L82        PathProgramCache]: Analyzing trace with hash 1872435820, now seen corresponding path program 4 times
[2020-04-18 19:14:28,010 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:28,010 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144333493]
[2020-04-18 19:14:28,010 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:28,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:28,131 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 19:14:28,132 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144333493]
[2020-04-18 19:14:28,132 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:28,133 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:28,133 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:28,136 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:28,161 INFO  L259    McrAutomatonBuilder]: Finished intersection with 174 states and 357 transitions.
[2020-04-18 19:14:28,161 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:28,248 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times.
[2020-04-18 19:14:28,248 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-04-18 19:14:28,249 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506
[2020-04-18 19:14:28,249 INFO  L87              Difference]: Start difference. First operand 1524 states and 4087 transitions. Second operand 9 states.
[2020-04-18 19:14:28,545 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:28,545 INFO  L93              Difference]: Finished difference Result 1578 states and 4164 transitions.
[2020-04-18 19:14:28,546 INFO  L276                IsEmpty]: Start isEmpty. Operand 1578 states and 4164 transitions.
[2020-04-18 19:14:28,548 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-04-18 19:14:28,548 INFO  L105                    Mcr]: ---- MCR iteration 3 ----
[2020-04-18 19:14:28,549 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:28,549 INFO  L82        PathProgramCache]: Analyzing trace with hash -1854270548, now seen corresponding path program 5 times
[2020-04-18 19:14:28,549 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:28,550 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000769726]
[2020-04-18 19:14:28,550 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:28,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:28,629 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 19:14:28,630 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000769726]
[2020-04-18 19:14:28,630 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:28,630 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:28,630 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:28,635 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:28,661 INFO  L259    McrAutomatonBuilder]: Finished intersection with 192 states and 413 transitions.
[2020-04-18 19:14:28,661 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:28,741 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times.
[2020-04-18 19:14:28,742 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-04-18 19:14:28,742 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756
[2020-04-18 19:14:28,743 INFO  L87              Difference]: Start difference. First operand 1578 states and 4164 transitions. Second operand 9 states.
[2020-04-18 19:14:29,057 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:29,057 INFO  L93              Difference]: Finished difference Result 1868 states and 4829 transitions.
[2020-04-18 19:14:29,057 INFO  L276                IsEmpty]: Start isEmpty. Operand 1868 states and 4829 transitions.
[2020-04-18 19:14:29,061 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-04-18 19:14:29,062 INFO  L105                    Mcr]: ---- MCR iteration 4 ----
[2020-04-18 19:14:29,062 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:29,062 INFO  L82        PathProgramCache]: Analyzing trace with hash 1059042606, now seen corresponding path program 6 times
[2020-04-18 19:14:29,062 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:29,062 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390340738]
[2020-04-18 19:14:29,062 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:29,071 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:29,149 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 19:14:29,149 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390340738]
[2020-04-18 19:14:29,149 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:29,149 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:29,150 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:29,153 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:29,177 INFO  L259    McrAutomatonBuilder]: Finished intersection with 175 states and 366 transitions.
[2020-04-18 19:14:29,177 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:29,341 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times.
[2020-04-18 19:14:29,342 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-04-18 19:14:29,343 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1334, Unknown=0, NotChecked=0, Total=1640
[2020-04-18 19:14:29,343 INFO  L87              Difference]: Start difference. First operand 1868 states and 4829 transitions. Second operand 8 states.
[2020-04-18 19:14:29,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:29,471 INFO  L93              Difference]: Finished difference Result 1868 states and 4829 transitions.
[2020-04-18 19:14:29,471 INFO  L276                IsEmpty]: Start isEmpty. Operand 1868 states and 4829 transitions.
[2020-04-18 19:14:29,473 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 19:14:29,474 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2116887396]
[2020-04-18 19:14:29,474 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 19:14:29,474 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-04-18 19:14:29,474 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2116887396]
[2020-04-18 19:14:29,475 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-04-18 19:14:29,475 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 19:14:29,475 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-04-18 19:14:29,476 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162
[2020-04-18 19:14:29,476 INFO  L87              Difference]: Start difference. First operand 1474 states and 4613 transitions. Second operand 19 states.
[2020-04-18 19:14:30,046 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:30,047 INFO  L93              Difference]: Finished difference Result 1663 states and 5090 transitions.
[2020-04-18 19:14:30,047 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-04-18 19:14:30,047 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states. Word has length 45
[2020-04-18 19:14:30,048 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 19:14:30,053 INFO  L225             Difference]: With dead ends: 1663
[2020-04-18 19:14:30,053 INFO  L226             Difference]: Without dead ends: 1159
[2020-04-18 19:14:30,055 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 307 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=559, Invalid=3223, Unknown=0, NotChecked=0, Total=3782
[2020-04-18 19:14:30,060 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1159 states.
[2020-04-18 19:14:30,087 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1159.
[2020-04-18 19:14:30,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1159 states.
[2020-04-18 19:14:30,092 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 3503 transitions.
[2020-04-18 19:14:30,092 INFO  L78                 Accepts]: Start accepts. Automaton has 1159 states and 3503 transitions. Word has length 45
[2020-04-18 19:14:30,092 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 19:14:30,093 INFO  L479      AbstractCegarLoop]: Abstraction has 1159 states and 3503 transitions.
[2020-04-18 19:14:30,093 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-04-18 19:14:30,093 INFO  L276                IsEmpty]: Start isEmpty. Operand 1159 states and 3503 transitions.
[2020-04-18 19:14:30,096 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-04-18 19:14:30,096 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 19:14:30,096 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 19:14:30,096 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 19:14:30,097 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:30,097 INFO  L82        PathProgramCache]: Analyzing trace with hash -962653023, now seen corresponding path program 1 times
[2020-04-18 19:14:30,097 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 19:14:30,097 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [996502771]
[2020-04-18 19:14:30,099 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:30,132 INFO  L259    McrAutomatonBuilder]: Finished intersection with 1063 states and 3294 transitions.
[2020-04-18 19:14:30,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 1063 states.
[2020-04-18 19:14:30,148 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-04-18 19:14:30,148 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 19:14:30,148 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:30,149 INFO  L82        PathProgramCache]: Analyzing trace with hash -1649551315, now seen corresponding path program 2 times
[2020-04-18 19:14:30,149 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:30,151 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153705863]
[2020-04-18 19:14:30,152 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:30,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:30,271 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 19:14:30,272 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153705863]
[2020-04-18 19:14:30,272 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:30,272 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-04-18 19:14:30,273 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:30,278 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:30,300 INFO  L259    McrAutomatonBuilder]: Finished intersection with 156 states and 302 transitions.
[2020-04-18 19:14:30,301 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:30,377 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times.
[2020-04-18 19:14:30,378 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:30,378 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-04-18 19:14:30,378 INFO  L87              Difference]: Start difference. First operand 1063 states. Second operand 7 states.
[2020-04-18 19:14:30,630 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:30,631 INFO  L93              Difference]: Finished difference Result 1698 states and 4978 transitions.
[2020-04-18 19:14:30,631 INFO  L276                IsEmpty]: Start isEmpty. Operand 1698 states and 4978 transitions.
[2020-04-18 19:14:30,635 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-04-18 19:14:30,635 INFO  L105                    Mcr]: ---- MCR iteration 1 ----
[2020-04-18 19:14:30,635 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:30,635 INFO  L82        PathProgramCache]: Analyzing trace with hash -429946923, now seen corresponding path program 3 times
[2020-04-18 19:14:30,636 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:30,636 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576638109]
[2020-04-18 19:14:30,636 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:30,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:30,719 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 19:14:30,720 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576638109]
[2020-04-18 19:14:30,720 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:30,720 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:30,721 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:30,723 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:30,738 INFO  L259    McrAutomatonBuilder]: Finished intersection with 161 states and 314 transitions.
[2020-04-18 19:14:30,738 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:30,757 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times.
[2020-04-18 19:14:30,757 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:30,757 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-04-18 19:14:30,758 INFO  L87              Difference]: Start difference. First operand 1698 states and 4978 transitions. Second operand 7 states.
[2020-04-18 19:14:30,968 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:30,968 INFO  L93              Difference]: Finished difference Result 2078 states and 5802 transitions.
[2020-04-18 19:14:30,968 INFO  L276                IsEmpty]: Start isEmpty. Operand 2078 states and 5802 transitions.
[2020-04-18 19:14:30,972 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-04-18 19:14:30,972 INFO  L105                    Mcr]: ---- MCR iteration 2 ----
[2020-04-18 19:14:30,972 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:30,973 INFO  L82        PathProgramCache]: Analyzing trace with hash 1818550557, now seen corresponding path program 4 times
[2020-04-18 19:14:30,973 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:30,973 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196523299]
[2020-04-18 19:14:30,973 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:30,981 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:31,066 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 19:14:31,067 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196523299]
[2020-04-18 19:14:31,067 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:31,067 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:31,068 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:31,071 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:31,096 INFO  L259    McrAutomatonBuilder]: Finished intersection with 180 states and 368 transitions.
[2020-04-18 19:14:31,096 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:31,156 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times.
[2020-04-18 19:14:31,156 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-04-18 19:14:31,157 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506
[2020-04-18 19:14:31,157 INFO  L87              Difference]: Start difference. First operand 2078 states and 5802 transitions. Second operand 9 states.
[2020-04-18 19:14:31,496 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:31,497 INFO  L93              Difference]: Finished difference Result 2186 states and 6010 transitions.
[2020-04-18 19:14:31,497 INFO  L276                IsEmpty]: Start isEmpty. Operand 2186 states and 6010 transitions.
[2020-04-18 19:14:31,501 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-04-18 19:14:31,502 INFO  L105                    Mcr]: ---- MCR iteration 3 ----
[2020-04-18 19:14:31,502 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:31,502 INFO  L82        PathProgramCache]: Analyzing trace with hash -1256812347, now seen corresponding path program 5 times
[2020-04-18 19:14:31,502 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:31,503 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840475966]
[2020-04-18 19:14:31,503 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:31,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:31,612 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 19:14:31,612 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840475966]
[2020-04-18 19:14:31,612 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:31,612 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:31,613 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:31,616 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:31,642 INFO  L259    McrAutomatonBuilder]: Finished intersection with 203 states and 434 transitions.
[2020-04-18 19:14:31,642 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:31,718 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times.
[2020-04-18 19:14:31,718 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-04-18 19:14:31,719 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756
[2020-04-18 19:14:31,719 INFO  L87              Difference]: Start difference. First operand 2186 states and 6010 transitions. Second operand 9 states.
[2020-04-18 19:14:32,004 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:32,004 INFO  L93              Difference]: Finished difference Result 2614 states and 7050 transitions.
[2020-04-18 19:14:32,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 2614 states and 7050 transitions.
[2020-04-18 19:14:32,009 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-04-18 19:14:32,009 INFO  L105                    Mcr]: ---- MCR iteration 4 ----
[2020-04-18 19:14:32,010 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:32,010 INFO  L82        PathProgramCache]: Analyzing trace with hash 2096674215, now seen corresponding path program 6 times
[2020-04-18 19:14:32,010 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:32,010 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13725097]
[2020-04-18 19:14:32,010 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:32,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:32,104 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 19:14:32,105 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13725097]
[2020-04-18 19:14:32,105 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:32,105 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:32,105 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:32,109 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:32,138 INFO  L259    McrAutomatonBuilder]: Finished intersection with 196 states and 415 transitions.
[2020-04-18 19:14:32,138 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:32,309 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times.
[2020-04-18 19:14:32,312 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-04-18 19:14:32,313 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1334, Unknown=0, NotChecked=0, Total=1640
[2020-04-18 19:14:32,313 INFO  L87              Difference]: Start difference. First operand 2614 states and 7050 transitions. Second operand 8 states.
[2020-04-18 19:14:32,612 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:32,612 INFO  L93              Difference]: Finished difference Result 2614 states and 7050 transitions.
[2020-04-18 19:14:32,613 INFO  L276                IsEmpty]: Start isEmpty. Operand 2614 states and 7050 transitions.
[2020-04-18 19:14:32,617 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 19:14:32,618 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [996502771]
[2020-04-18 19:14:32,618 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 19:14:32,618 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-04-18 19:14:32,618 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [996502771]
[2020-04-18 19:14:32,619 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-04-18 19:14:32,619 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 19:14:32,619 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-04-18 19:14:32,620 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1979, Unknown=0, NotChecked=0, Total=2352
[2020-04-18 19:14:32,620 INFO  L87              Difference]: Start difference. First operand 1159 states and 3503 transitions. Second operand 19 states.
[2020-04-18 19:14:33,081 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:33,081 INFO  L93              Difference]: Finished difference Result 1132 states and 3278 transitions.
[2020-04-18 19:14:33,085 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-04-18 19:14:33,085 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states. Word has length 46
[2020-04-18 19:14:33,085 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 19:14:33,087 INFO  L225             Difference]: With dead ends: 1132
[2020-04-18 19:14:33,087 INFO  L226             Difference]: Without dead ends: 700
[2020-04-18 19:14:33,088 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=488, Invalid=2934, Unknown=0, NotChecked=0, Total=3422
[2020-04-18 19:14:33,091 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 700 states.
[2020-04-18 19:14:33,102 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700.
[2020-04-18 19:14:33,102 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 700 states.
[2020-04-18 19:14:33,104 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1970 transitions.
[2020-04-18 19:14:33,104 INFO  L78                 Accepts]: Start accepts. Automaton has 700 states and 1970 transitions. Word has length 46
[2020-04-18 19:14:33,104 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 19:14:33,104 INFO  L479      AbstractCegarLoop]: Abstraction has 700 states and 1970 transitions.
[2020-04-18 19:14:33,105 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-04-18 19:14:33,105 INFO  L276                IsEmpty]: Start isEmpty. Operand 700 states and 1970 transitions.
[2020-04-18 19:14:33,106 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-04-18 19:14:33,106 INFO  L417         BasicCegarLoop]: Found error trace
[2020-04-18 19:14:33,106 INFO  L425         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-04-18 19:14:33,107 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-04-18 19:14:33,107 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:33,107 INFO  L82        PathProgramCache]: Analyzing trace with hash -2043948480, now seen corresponding path program 1 times
[2020-04-18 19:14:33,107 INFO  L163   FreeRefinementEngine]: Executing refinement strategy MCR
[2020-04-18 19:14:33,107 INFO  L354   FreeRefinementEngine]: Using trace check StrategyModuleMcr [1637269691]
[2020-04-18 19:14:33,109 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:33,147 INFO  L259    McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions.
[2020-04-18 19:14:33,158 INFO  L276                IsEmpty]: Start isEmpty. Operand 1761 states.
[2020-04-18 19:14:33,162 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-04-18 19:14:33,162 INFO  L105                    Mcr]: ---- MCR iteration 0 ----
[2020-04-18 19:14:33,162 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:33,162 INFO  L82        PathProgramCache]: Analyzing trace with hash -484838578, now seen corresponding path program 2 times
[2020-04-18 19:14:33,163 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:33,163 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34990091]
[2020-04-18 19:14:33,163 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:33,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:33,240 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 19:14:33,241 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34990091]
[2020-04-18 19:14:33,241 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:33,241 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-04-18 19:14:33,241 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:33,245 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:33,274 INFO  L259    McrAutomatonBuilder]: Finished intersection with 196 states and 398 transitions.
[2020-04-18 19:14:33,275 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:33,336 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times.
[2020-04-18 19:14:33,336 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-04-18 19:14:33,336 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-04-18 19:14:33,337 INFO  L87              Difference]: Start difference. First operand 1761 states. Second operand 7 states.
[2020-04-18 19:14:33,569 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:33,569 INFO  L93              Difference]: Finished difference Result 3154 states and 9970 transitions.
[2020-04-18 19:14:33,569 INFO  L276                IsEmpty]: Start isEmpty. Operand 3154 states and 9970 transitions.
[2020-04-18 19:14:33,574 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-04-18 19:14:33,574 INFO  L105                    Mcr]: ---- MCR iteration 1 ----
[2020-04-18 19:14:33,574 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:33,575 INFO  L82        PathProgramCache]: Analyzing trace with hash 734765814, now seen corresponding path program 3 times
[2020-04-18 19:14:33,575 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:33,575 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629311224]
[2020-04-18 19:14:33,575 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:33,583 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:33,685 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 19:14:33,685 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629311224]
[2020-04-18 19:14:33,686 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:33,686 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-04-18 19:14:33,686 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:33,690 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:33,725 INFO  L259    McrAutomatonBuilder]: Finished intersection with 205 states and 420 transitions.
[2020-04-18 19:14:33,725 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:33,898 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times.
[2020-04-18 19:14:33,898 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-04-18 19:14:33,899 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380
[2020-04-18 19:14:33,899 INFO  L87              Difference]: Start difference. First operand 3154 states and 9970 transitions. Second operand 14 states.
[2020-04-18 19:14:34,482 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:34,482 INFO  L93              Difference]: Finished difference Result 4358 states and 13418 transitions.
[2020-04-18 19:14:34,483 INFO  L276                IsEmpty]: Start isEmpty. Operand 4358 states and 13418 transitions.
[2020-04-18 19:14:34,491 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-04-18 19:14:34,491 INFO  L105                    Mcr]: ---- MCR iteration 2 ----
[2020-04-18 19:14:34,491 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:34,492 INFO  L82        PathProgramCache]: Analyzing trace with hash -1579171714, now seen corresponding path program 4 times
[2020-04-18 19:14:34,492 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:34,492 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688981328]
[2020-04-18 19:14:34,492 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:34,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:34,588 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 19:14:34,588 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688981328]
[2020-04-18 19:14:34,588 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:34,588 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-04-18 19:14:34,588 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:34,591 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:34,608 INFO  L259    McrAutomatonBuilder]: Finished intersection with 160 states and 302 transitions.
[2020-04-18 19:14:34,608 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:34,745 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times.
[2020-04-18 19:14:34,746 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-04-18 19:14:34,746 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=716, Unknown=0, NotChecked=0, Total=992
[2020-04-18 19:14:34,746 INFO  L87              Difference]: Start difference. First operand 4358 states and 13418 transitions. Second operand 11 states.
[2020-04-18 19:14:35,330 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:35,330 INFO  L93              Difference]: Finished difference Result 5326 states and 15898 transitions.
[2020-04-18 19:14:35,330 INFO  L276                IsEmpty]: Start isEmpty. Operand 5326 states and 15898 transitions.
[2020-04-18 19:14:35,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-04-18 19:14:35,340 INFO  L105                    Mcr]: ---- MCR iteration 3 ----
[2020-04-18 19:14:35,341 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:35,341 INFO  L82        PathProgramCache]: Analyzing trace with hash -1433762296, now seen corresponding path program 5 times
[2020-04-18 19:14:35,341 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:35,341 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23880102]
[2020-04-18 19:14:35,341 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:35,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:35,469 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 19:14:35,469 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23880102]
[2020-04-18 19:14:35,470 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:35,470 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:35,470 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:35,474 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:35,562 INFO  L259    McrAutomatonBuilder]: Finished intersection with 221 states and 468 transitions.
[2020-04-18 19:14:35,562 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:35,628 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 27 times.
[2020-04-18 19:14:35,628 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-04-18 19:14:35,629 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=1404, Unknown=0, NotChecked=0, Total=1892
[2020-04-18 19:14:35,629 INFO  L87              Difference]: Start difference. First operand 5326 states and 15898 transitions. Second operand 13 states.
[2020-04-18 19:14:36,506 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:36,507 INFO  L93              Difference]: Finished difference Result 6476 states and 19001 transitions.
[2020-04-18 19:14:36,507 INFO  L276                IsEmpty]: Start isEmpty. Operand 6476 states and 19001 transitions.
[2020-04-18 19:14:36,514 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-04-18 19:14:36,514 INFO  L105                    Mcr]: ---- MCR iteration 4 ----
[2020-04-18 19:14:36,514 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-04-18 19:14:36,514 INFO  L82        PathProgramCache]: Analyzing trace with hash -1099862712, now seen corresponding path program 6 times
[2020-04-18 19:14:36,514 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-04-18 19:14:36,515 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110734802]
[2020-04-18 19:14:36,515 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-04-18 19:14:36,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-04-18 19:14:36,598 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 19:14:36,598 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110734802]
[2020-04-18 19:14:36,598 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-04-18 19:14:36,598 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-04-18 19:14:36,599 INFO  L201    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-04-18 19:14:36,602 INFO  L256    McrAutomatonBuilder]: Started intersection.
[2020-04-18 19:14:36,624 INFO  L259    McrAutomatonBuilder]: Finished intersection with 214 states and 454 transitions.
[2020-04-18 19:14:36,624 INFO  L282    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton.
[2020-04-18 19:14:36,812 INFO  L356    McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times.
[2020-04-18 19:14:36,812 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-04-18 19:14:36,814 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=652, Invalid=2654, Unknown=0, NotChecked=0, Total=3306
[2020-04-18 19:14:36,814 INFO  L87              Difference]: Start difference. First operand 6476 states and 19001 transitions. Second operand 8 states.
[2020-04-18 19:14:37,220 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:37,220 INFO  L93              Difference]: Finished difference Result 6630 states and 19148 transitions.
[2020-04-18 19:14:37,221 INFO  L276                IsEmpty]: Start isEmpty. Operand 6630 states and 19148 transitions.
[2020-04-18 19:14:37,228 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 19:14:37,229 INFO  L354   FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1637269691]
[2020-04-18 19:14:37,229 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-04-18 19:14:37,229 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-04-18 19:14:37,229 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1637269691]
[2020-04-18 19:14:37,229 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 27 states
[2020-04-18 19:14:37,229 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR
[2020-04-18 19:14:37,230 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2020-04-18 19:14:37,231 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=3651, Unknown=0, NotChecked=0, Total=4422
[2020-04-18 19:14:37,231 INFO  L87              Difference]: Start difference. First operand 700 states and 1970 transitions. Second operand 27 states.
[2020-04-18 19:14:37,897 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-04-18 19:14:37,897 INFO  L93              Difference]: Finished difference Result 646 states and 1808 transitions.
[2020-04-18 19:14:37,897 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2020-04-18 19:14:37,898 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states. Word has length 48
[2020-04-18 19:14:37,898 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-04-18 19:14:37,898 INFO  L225             Difference]: With dead ends: 646
[2020-04-18 19:14:37,898 INFO  L226             Difference]: Without dead ends: 0
[2020-04-18 19:14:37,901 INFO  L678         BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2193 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1109, Invalid=5533, Unknown=0, NotChecked=0, Total=6642
[2020-04-18 19:14:37,901 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-04-18 19:14:37,901 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-04-18 19:14:37,902 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-04-18 19:14:37,902 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-04-18 19:14:37,902 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48
[2020-04-18 19:14:37,902 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-04-18 19:14:37,902 INFO  L479      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-04-18 19:14:37,902 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 27 states.
[2020-04-18 19:14:37,902 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-04-18 19:14:37,902 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-04-18 19:14:37,906 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:14:37 BasicIcfg
[2020-04-18 19:14:37,906 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-04-18 19:14:37,909 INFO  L168              Benchmark]: Toolchain (without parser) took 23500.09 ms. Allocated memory was 144.2 MB in the beginning and 739.8 MB in the end (delta: 595.6 MB). Free memory was 100.6 MB in the beginning and 212.6 MB in the end (delta: -112.0 MB). Peak memory consumption was 483.6 MB. Max. memory is 7.1 GB.
[2020-04-18 19:14:37,909 INFO  L168              Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.2 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB.
[2020-04-18 19:14:37,910 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 714.01 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 98.7 MB in the beginning and 157.7 MB in the end (delta: -59.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB.
[2020-04-18 19:14:37,910 INFO  L168              Benchmark]: Boogie Procedure Inliner took 64.83 ms. Allocated memory is still 200.8 MB. Free memory was 157.7 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
[2020-04-18 19:14:37,911 INFO  L168              Benchmark]: Boogie Preprocessor took 33.53 ms. Allocated memory is still 200.8 MB. Free memory was 155.7 MB in the beginning and 153.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
[2020-04-18 19:14:37,911 INFO  L168              Benchmark]: RCFGBuilder took 473.30 ms. Allocated memory is still 200.8 MB. Free memory was 153.7 MB in the beginning and 131.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB.
[2020-04-18 19:14:37,912 INFO  L168              Benchmark]: TraceAbstraction took 22181.59 ms. Allocated memory was 200.8 MB in the beginning and 739.8 MB in the end (delta: 539.0 MB). Free memory was 131.7 MB in the beginning and 212.6 MB in the end (delta: -80.9 MB). Peak memory consumption was 458.1 MB. Max. memory is 7.1 GB.
[2020-04-18 19:14:37,915 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.18 ms. Allocated memory is still 144.2 MB. Free memory is still 120.1 MB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 714.01 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 98.7 MB in the beginning and 157.7 MB in the end (delta: -59.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 64.83 ms. Allocated memory is still 200.8 MB. Free memory was 157.7 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 33.53 ms. Allocated memory is still 200.8 MB. Free memory was 155.7 MB in the beginning and 153.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 473.30 ms. Allocated memory is still 200.8 MB. Free memory was 153.7 MB in the beginning and 131.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 22181.59 ms. Allocated memory was 200.8 MB in the beginning and 739.8 MB in the end (delta: 539.0 MB). Free memory was 131.7 MB in the beginning and 212.6 MB in the end (delta: -80.9 MB). Peak memory consumption was 458.1 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 960 SDtfs, 3439 SDslu, 6217 SDs, 0 SdLazy, 1639 SolverSat, 360 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2145 GetRequests, 1776 SyntacticMatches, 8 SemanticMatches, 361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6993 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 1.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 3328 StatesRemovedByMinimization, 4 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...