/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longer-2.i


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


This is Ultimate 0.2.0-7a177ad
[2020-11-09 14:52:30,442 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-11-09 14:52:30,447 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-11-09 14:52:30,512 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-11-09 14:52:30,512 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-11-09 14:52:30,518 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-11-09 14:52:30,522 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-11-09 14:52:30,534 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-11-09 14:52:30,541 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-11-09 14:52:30,557 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-11-09 14:52:30,561 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-11-09 14:52:30,564 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-11-09 14:52:30,566 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-11-09 14:52:30,568 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-11-09 14:52:30,572 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-09 14:52:30,580 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-09 14:52:30,589 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-11-09 14:52:30,591 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-11-09 14:52:30,593 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-11-09 14:52:30,594 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-11-09 14:52:30,597 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-11-09 14:52:30,606 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-11-09 14:52:30,606 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-11-09 14:52:30,606 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-11-09 14:52:30,609 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-11-09 14:52:30,610 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-11-09 14:52:30,611 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-11-09 14:52:30,611 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-11-09 14:52:30,612 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-11-09 14:52:30,614 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
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[2020-11-09 14:52:30,616 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-11-09 14:52:30,616 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-11-09 14:52:30,618 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-11-09 14:52:30,619 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-11-09 14:52:30,620 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf
[2020-11-09 14:52:30,677 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-11-09 14:52:30,678 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-09 14:52:30,682 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-11-09 14:52:30,682 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-11-09 14:52:30,682 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-11-09 14:52:30,683 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-09 14:52:30,683 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-11-09 14:52:30,683 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-11-09 14:52:30,683 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-11-09 14:52:30,684 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-11-09 14:52:30,685 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-11-09 14:52:30,685 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-11-09 14:52:30,685 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-11-09 14:52:30,686 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-11-09 14:52:30,686 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-11-09 14:52:30,686 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-11-09 14:52:30,686 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-11-09 14:52:30,686 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-09 14:52:30,687 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-11-09 14:52:30,687 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-11-09 14:52:30,687 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-11-09 14:52:30,688 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-09 14:52:30,688 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-09 14:52:30,688 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=Craig_NestedInterpolation
[2020-11-09 14:52:30,688 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-11-09 14:52:30,688 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-11-09 14:52:30,689 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-11-09 14:52:30,689 INFO  L138        SettingsManager]:  * Override the interpolant automaton setting of the refinement strategy=true
[2020-11-09 14:52:30,689 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK
[2020-11-09 14:52:30,689 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-11-09 14:52:30,689 INFO  L138        SettingsManager]:  * Interpolant automaton=MCR
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-11-09 14:52:31,160 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-09 14:52:31,190 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-09 14:52:31,194 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-09 14:52:31,195 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-11-09 14:52:31,196 INFO  L275        PluginConnector]: CDTParser initialized
[2020-11-09 14:52:31,197 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i
[2020-11-09 14:52:31,290 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b2b94f7/7c54d3ad3d2a416d9910f9c52e96a46a/FLAGc670fb5a4
[2020-11-09 14:52:32,105 INFO  L306              CDTParser]: Found 1 translation units.
[2020-11-09 14:52:32,108 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i
[2020-11-09 14:52:32,130 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b2b94f7/7c54d3ad3d2a416d9910f9c52e96a46a/FLAGc670fb5a4
[2020-11-09 14:52:32,320 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b2b94f7/7c54d3ad3d2a416d9910f9c52e96a46a
[2020-11-09 14:52:32,325 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-09 14:52:32,332 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2020-11-09 14:52:32,334 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-09 14:52:32,335 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-09 14:52:32,340 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-09 14:52:32,342 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:32" (1/1) ...
[2020-11-09 14:52:32,346 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed4f835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:32, skipping insertion in model container
[2020-11-09 14:52:32,347 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:32" (1/1) ...
[2020-11-09 14:52:32,356 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-11-09 14:52:32,423 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-11-09 14:52:32,892 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-11-09 14:52:32,909 INFO  L203         MainTranslator]: Completed pre-run
[2020-11-09 14:52:32,976 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-11-09 14:52:33,076 INFO  L208         MainTranslator]: Completed translation
[2020-11-09 14:52:33,077 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33 WrapperNode
[2020-11-09 14:52:33,077 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-09 14:52:33,078 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2020-11-09 14:52:33,079 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2020-11-09 14:52:33,079 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2020-11-09 14:52:33,088 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33" (1/1) ...
[2020-11-09 14:52:33,104 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33" (1/1) ...
[2020-11-09 14:52:33,126 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2020-11-09 14:52:33,127 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-09 14:52:33,127 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-09 14:52:33,128 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-11-09 14:52:33,137 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33" (1/1) ...
[2020-11-09 14:52:33,138 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33" (1/1) ...
[2020-11-09 14:52:33,141 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33" (1/1) ...
[2020-11-09 14:52:33,141 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33" (1/1) ...
[2020-11-09 14:52:33,147 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33" (1/1) ...
[2020-11-09 14:52:33,152 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33" (1/1) ...
[2020-11-09 14:52:33,154 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33" (1/1) ...
[2020-11-09 14:52:33,157 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-09 14:52:33,159 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-09 14:52:33,159 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-11-09 14:52:33,159 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-11-09 14:52:33,160 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33" (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
[2020-11-09 14:52:33,240 INFO  L130     BoogieDeclarations]: Found specification of procedure t1
[2020-11-09 14:52:33,240 INFO  L138     BoogieDeclarations]: Found implementation of procedure t1
[2020-11-09 14:52:33,241 INFO  L130     BoogieDeclarations]: Found specification of procedure t2
[2020-11-09 14:52:33,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure t2
[2020-11-09 14:52:33,241 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-11-09 14:52:33,241 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2020-11-09 14:52:33,241 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-09 14:52:33,241 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-11-09 14:52:33,242 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-09 14:52:33,242 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2020-11-09 14:52:33,242 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-09 14:52:33,242 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-09 14:52:33,244 WARN  L208             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2020-11-09 14:52:33,726 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-09 14:52:33,727 INFO  L298             CfgBuilder]: Removed 8 assume(true) statements.
[2020-11-09 14:52:33,729 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:33 BoogieIcfgContainer
[2020-11-09 14:52:33,730 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-09 14:52:33,732 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-11-09 14:52:33,732 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-11-09 14:52:33,736 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-11-09 14:52:33,737 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:52:32" (1/3) ...
[2020-11-09 14:52:33,738 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77632369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:33, skipping insertion in model container
[2020-11-09 14:52:33,738 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:33" (2/3) ...
[2020-11-09 14:52:33,739 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77632369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:33, skipping insertion in model container
[2020-11-09 14:52:33,739 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:33" (3/3) ...
[2020-11-09 14:52:33,743 INFO  L111   eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i
[2020-11-09 14:52:33,761 WARN  L168   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2020-11-09 14:52:33,762 INFO  L179   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-11-09 14:52:33,766 INFO  L191   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-11-09 14:52:33,767 INFO  L351   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2020-11-09 14:52:33,799 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,799 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,800 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,800 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,800 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,800 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,801 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,801 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,801 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,801 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,802 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,802 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,802 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,802 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,803 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,803 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,803 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,803 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,804 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,804 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,804 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,804 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,804 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,805 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,805 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,805 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,805 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,805 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,806 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,806 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,806 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,806 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,807 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,807 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,807 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,807 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,808 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,808 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,808 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,808 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,808 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,809 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,809 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,809 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,809 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,810 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,810 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,810 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,810 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,810 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,811 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,811 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,811 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,811 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,812 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,812 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,814 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,815 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,815 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,815 WARN  L313   ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,815 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,815 WARN  L313   ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,822 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,822 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,823 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,823 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,823 WARN  L313   ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,823 WARN  L313   ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-11-09 14:52:33,827 INFO  L149    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2020-11-09 14:52:33,842 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2020-11-09 14:52:33,867 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-11-09 14:52:33,867 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-11-09 14:52:33,867 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-11-09 14:52:33,868 INFO  L380      AbstractCegarLoop]: Backedges is MCR
[2020-11-09 14:52:33,868 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-09 14:52:33,868 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-11-09 14:52:33,868 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-09 14:52:33,868 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-11-09 14:52:33,881 INFO  L128   etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2020-11-09 14:52:33,882 INFO  L135   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 64 transitions, 138 flow
[2020-11-09 14:52:33,885 INFO  L110        LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 64 transitions, 138 flow
[2020-11-09 14:52:33,888 INFO  L74            FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 138 flow
[2020-11-09 14:52:33,930 INFO  L129       PetriNetUnfolder]: 6/62 cut-off events.
[2020-11-09 14:52:33,931 INFO  L130       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2020-11-09 14:52:33,935 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 6/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. 
[2020-11-09 14:52:33,938 INFO  L116        LiptonReduction]: Number of co-enabled transitions 1144
[2020-11-09 14:52:35,734 WARN  L194               SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49
[2020-11-09 14:52:35,915 WARN  L194               SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49
[2020-11-09 14:52:36,683 WARN  L194               SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76
[2020-11-09 14:52:36,796 WARN  L194               SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72
[2020-11-09 14:52:37,041 WARN  L194               SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76
[2020-11-09 14:52:37,158 WARN  L194               SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 72
[2020-11-09 14:52:37,605 WARN  L194               SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89
[2020-11-09 14:52:37,748 WARN  L194               SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 85
[2020-11-09 14:52:38,075 WARN  L194               SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89
[2020-11-09 14:52:38,218 WARN  L194               SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 85
[2020-11-09 14:52:38,276 INFO  L131        LiptonReduction]: Checked pairs total: 1187
[2020-11-09 14:52:38,276 INFO  L133        LiptonReduction]: Total number of compositions: 62
[2020-11-09 14:52:38,286 INFO  L100   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow
[2020-11-09 14:52:38,299 INFO  L122   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states.
[2020-11-09 14:52:38,301 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states.
[2020-11-09 14:52:38,307 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2020-11-09 14:52:38,307 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:38,308 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:38,309 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:38,315 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:38,315 INFO  L82        PathProgramCache]: Analyzing trace with hash -805875314, now seen corresponding path program 1 times
[2020-11-09 14:52:38,339 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:38,339 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7725300]
[2020-11-09 14:52:38,339 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:38,471 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:38,573 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:38,574 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7725300]
[2020-11-09 14:52:38,575 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-09 14:52:38,575 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-11-09 14:52:38,576 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1482450322]
[2020-11-09 14:52:38,577 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:38,580 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:38,594 INFO  L252    McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions.
[2020-11-09 14:52:38,594 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:38,600 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:52:38,601 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-11-09 14:52:38,601 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:38,617 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-11-09 14:52:38,618 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-11-09 14:52:38,620 INFO  L87              Difference]: Start difference. First operand 44 states. Second operand 4 states.
[2020-11-09 14:52:38,690 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:38,691 INFO  L93              Difference]: Finished difference Result 75 states and 190 transitions.
[2020-11-09 14:52:38,691 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-11-09 14:52:38,693 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 6
[2020-11-09 14:52:38,694 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:38,704 INFO  L225             Difference]: With dead ends: 75
[2020-11-09 14:52:38,705 INFO  L226             Difference]: Without dead ends: 42
[2020-11-09 14:52:38,706 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-11-09 14:52:38,733 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2020-11-09 14:52:38,752 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2020-11-09 14:52:38,754 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-11-09 14:52:38,756 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 98 transitions.
[2020-11-09 14:52:38,758 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 98 transitions. Word has length 6
[2020-11-09 14:52:38,758 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:38,759 INFO  L481      AbstractCegarLoop]: Abstraction has 42 states and 98 transitions.
[2020-11-09 14:52:38,759 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-11-09 14:52:38,759 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 98 transitions.
[2020-11-09 14:52:38,760 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2020-11-09 14:52:38,760 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:38,760 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:38,761 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-11-09 14:52:38,761 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:38,762 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:38,762 INFO  L82        PathProgramCache]: Analyzing trace with hash -1351909113, now seen corresponding path program 1 times
[2020-11-09 14:52:38,766 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:38,766 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019369794]
[2020-11-09 14:52:38,766 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:38,797 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:38,860 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:38,861 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019369794]
[2020-11-09 14:52:38,861 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-09 14:52:38,861 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-11-09 14:52:38,861 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [832047376]
[2020-11-09 14:52:38,862 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:38,864 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:38,867 INFO  L252    McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions.
[2020-11-09 14:52:38,868 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:38,901 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:52:38,902 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-11-09 14:52:38,903 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:38,904 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-11-09 14:52:38,904 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-11-09 14:52:38,904 INFO  L87              Difference]: Start difference. First operand 42 states and 98 transitions. Second operand 5 states.
[2020-11-09 14:52:38,964 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:38,964 INFO  L93              Difference]: Finished difference Result 56 states and 130 transitions.
[2020-11-09 14:52:38,965 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-11-09 14:52:38,965 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 8
[2020-11-09 14:52:38,965 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:38,967 INFO  L225             Difference]: With dead ends: 56
[2020-11-09 14:52:38,967 INFO  L226             Difference]: Without dead ends: 50
[2020-11-09 14:52:38,968 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2020-11-09 14:52:38,970 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-11-09 14:52:38,976 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42.
[2020-11-09 14:52:38,976 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-11-09 14:52:38,978 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions.
[2020-11-09 14:52:38,978 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8
[2020-11-09 14:52:38,979 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:38,980 INFO  L481      AbstractCegarLoop]: Abstraction has 42 states and 100 transitions.
[2020-11-09 14:52:38,980 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-11-09 14:52:38,980 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions.
[2020-11-09 14:52:38,981 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-11-09 14:52:38,981 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:38,982 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:38,982 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-11-09 14:52:38,982 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:38,983 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:38,983 INFO  L82        PathProgramCache]: Analyzing trace with hash 2021583950, now seen corresponding path program 1 times
[2020-11-09 14:52:38,985 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:38,985 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258763784]
[2020-11-09 14:52:38,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:39,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:39,098 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:39,098 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258763784]
[2020-11-09 14:52:39,099 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-09 14:52:39,099 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-11-09 14:52:39,100 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [292719364]
[2020-11-09 14:52:39,100 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:39,102 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:39,106 INFO  L252    McrAutomatonBuilder]: Finished intersection with 18 states and 25 transitions.
[2020-11-09 14:52:39,106 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:39,117 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:39,117 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:39,144 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:39,144 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:39,171 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:39,171 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:39,189 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [474#(and (< ~i~0 26) (<= ~j~0 6))]
[2020-11-09 14:52:39,190 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-11-09 14:52:39,190 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:39,191 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-11-09 14:52:39,191 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-11-09 14:52:39,192 INFO  L87              Difference]: Start difference. First operand 42 states and 100 transitions. Second operand 7 states.
[2020-11-09 14:52:39,321 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:39,321 INFO  L93              Difference]: Finished difference Result 66 states and 152 transitions.
[2020-11-09 14:52:39,321 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-11-09 14:52:39,322 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 10
[2020-11-09 14:52:39,322 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:39,323 INFO  L225             Difference]: With dead ends: 66
[2020-11-09 14:52:39,323 INFO  L226             Difference]: Without dead ends: 50
[2020-11-09 14:52:39,324 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2020-11-09 14:52:39,325 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-11-09 14:52:39,330 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42.
[2020-11-09 14:52:39,331 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-11-09 14:52:39,332 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 99 transitions.
[2020-11-09 14:52:39,332 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 99 transitions. Word has length 10
[2020-11-09 14:52:39,332 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:39,332 INFO  L481      AbstractCegarLoop]: Abstraction has 42 states and 99 transitions.
[2020-11-09 14:52:39,333 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-11-09 14:52:39,333 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 99 transitions.
[2020-11-09 14:52:39,333 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-11-09 14:52:39,334 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:39,334 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:39,334 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-11-09 14:52:39,334 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:39,335 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:39,335 INFO  L82        PathProgramCache]: Analyzing trace with hash 2082353870, now seen corresponding path program 2 times
[2020-11-09 14:52:39,337 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:39,337 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238328468]
[2020-11-09 14:52:39,337 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:39,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:39,447 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:39,448 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238328468]
[2020-11-09 14:52:39,448 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-09 14:52:39,448 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-11-09 14:52:39,449 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1437633299]
[2020-11-09 14:52:39,449 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:39,450 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:39,453 INFO  L252    McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions.
[2020-11-09 14:52:39,454 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:39,481 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:39,481 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:39,521 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [639#(and (<= ~i~0 7) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:52:39,522 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-11-09 14:52:39,522 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:39,524 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-11-09 14:52:39,525 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-11-09 14:52:39,526 INFO  L87              Difference]: Start difference. First operand 42 states and 99 transitions. Second operand 7 states.
[2020-11-09 14:52:39,625 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:39,625 INFO  L93              Difference]: Finished difference Result 67 states and 157 transitions.
[2020-11-09 14:52:39,628 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-11-09 14:52:39,628 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 10
[2020-11-09 14:52:39,629 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:39,630 INFO  L225             Difference]: With dead ends: 67
[2020-11-09 14:52:39,630 INFO  L226             Difference]: Without dead ends: 54
[2020-11-09 14:52:39,630 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2020-11-09 14:52:39,633 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2020-11-09 14:52:39,638 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42.
[2020-11-09 14:52:39,641 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-11-09 14:52:39,642 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 102 transitions.
[2020-11-09 14:52:39,642 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 102 transitions. Word has length 10
[2020-11-09 14:52:39,642 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:39,643 INFO  L481      AbstractCegarLoop]: Abstraction has 42 states and 102 transitions.
[2020-11-09 14:52:39,643 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-11-09 14:52:39,643 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 102 transitions.
[2020-11-09 14:52:39,646 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-11-09 14:52:39,646 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:39,647 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:39,647 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-11-09 14:52:39,647 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:39,647 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:39,648 INFO  L82        PathProgramCache]: Analyzing trace with hash 735328415, now seen corresponding path program 3 times
[2020-11-09 14:52:39,650 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:39,650 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291235592]
[2020-11-09 14:52:39,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:39,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:39,785 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:39,786 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291235592]
[2020-11-09 14:52:39,786 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181414229]
[2020-11-09 14:52:39,786 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:39,860 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2020-11-09 14:52:39,861 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:39,863 INFO  L263         TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-11-09 14:52:39,867 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:39,905 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:52:39,918 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:39,919 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:39,919 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6
[2020-11-09 14:52:39,920 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [317118741]
[2020-11-09 14:52:39,920 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:39,921 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:39,923 INFO  L252    McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions.
[2020-11-09 14:52:39,923 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:39,950 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [835#(and (<= ~i~0 5) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:52:39,951 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-11-09 14:52:39,951 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:39,952 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-11-09 14:52:39,952 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2020-11-09 14:52:39,952 INFO  L87              Difference]: Start difference. First operand 42 states and 102 transitions. Second operand 8 states.
[2020-11-09 14:52:40,127 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:40,127 INFO  L93              Difference]: Finished difference Result 63 states and 147 transitions.
[2020-11-09 14:52:40,127 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-11-09 14:52:40,128 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 11
[2020-11-09 14:52:40,128 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:40,128 INFO  L225             Difference]: With dead ends: 63
[2020-11-09 14:52:40,129 INFO  L226             Difference]: Without dead ends: 54
[2020-11-09 14:52:40,129 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240
[2020-11-09 14:52:40,130 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2020-11-09 14:52:40,133 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37.
[2020-11-09 14:52:40,134 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2020-11-09 14:52:40,134 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 87 transitions.
[2020-11-09 14:52:40,134 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 87 transitions. Word has length 11
[2020-11-09 14:52:40,135 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:40,135 INFO  L481      AbstractCegarLoop]: Abstraction has 37 states and 87 transitions.
[2020-11-09 14:52:40,135 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-11-09 14:52:40,135 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 87 transitions.
[2020-11-09 14:52:40,136 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-11-09 14:52:40,136 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:40,136 INFO  L422         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:40,349 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:40,350 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:40,351 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:40,352 INFO  L82        PathProgramCache]: Analyzing trace with hash 128488628, now seen corresponding path program 4 times
[2020-11-09 14:52:40,353 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:40,354 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890033522]
[2020-11-09 14:52:40,354 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:40,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:40,435 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:40,436 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890033522]
[2020-11-09 14:52:40,436 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490001301]
[2020-11-09 14:52:40,436 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:40,526 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-11-09 14:52:40,526 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:40,527 INFO  L263         TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-11-09 14:52:40,529 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:40,553 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:40,565 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:40,566 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:40,566 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6
[2020-11-09 14:52:40,566 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2066044500]
[2020-11-09 14:52:40,566 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:40,567 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:40,570 INFO  L252    McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions.
[2020-11-09 14:52:40,570 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:40,598 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:52:40,598 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-11-09 14:52:40,598 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:40,599 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-11-09 14:52:40,599 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2020-11-09 14:52:40,599 INFO  L87              Difference]: Start difference. First operand 37 states and 87 transitions. Second operand 7 states.
[2020-11-09 14:52:40,737 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:40,737 INFO  L93              Difference]: Finished difference Result 56 states and 133 transitions.
[2020-11-09 14:52:40,738 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-11-09 14:52:40,738 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2020-11-09 14:52:40,738 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:40,739 INFO  L225             Difference]: With dead ends: 56
[2020-11-09 14:52:40,739 INFO  L226             Difference]: Without dead ends: 51
[2020-11-09 14:52:40,740 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156
[2020-11-09 14:52:40,740 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2020-11-09 14:52:40,744 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43.
[2020-11-09 14:52:40,744 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2020-11-09 14:52:40,744 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 105 transitions.
[2020-11-09 14:52:40,745 INFO  L78                 Accepts]: Start accepts. Automaton has 43 states and 105 transitions. Word has length 11
[2020-11-09 14:52:40,745 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:40,745 INFO  L481      AbstractCegarLoop]: Abstraction has 43 states and 105 transitions.
[2020-11-09 14:52:40,745 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-11-09 14:52:40,745 INFO  L276                IsEmpty]: Start isEmpty. Operand 43 states and 105 transitions.
[2020-11-09 14:52:40,746 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-11-09 14:52:40,746 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:40,746 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:40,957 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:40,958 INFO  L429      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:40,959 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:40,959 INFO  L82        PathProgramCache]: Analyzing trace with hash 1416964401, now seen corresponding path program 5 times
[2020-11-09 14:52:40,961 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:40,961 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459571962]
[2020-11-09 14:52:40,962 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:40,976 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:41,050 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:41,050 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459571962]
[2020-11-09 14:52:41,051 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640455799]
[2020-11-09 14:52:41,051 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:41,127 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-11-09 14:52:41,127 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:41,128 INFO  L263         TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-11-09 14:52:41,129 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:41,132 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:41,151 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:41,151 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:41,152 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2020-11-09 14:52:41,152 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1890033808]
[2020-11-09 14:52:41,152 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:41,154 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:41,156 INFO  L252    McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions.
[2020-11-09 14:52:41,156 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:41,158 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:41,158 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:41,184 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:41,184 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:41,206 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:41,206 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:41,225 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1218#(and (< ~i~0 26) (<= ~j~0 6))]
[2020-11-09 14:52:41,225 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-11-09 14:52:41,225 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:41,226 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-11-09 14:52:41,226 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2020-11-09 14:52:41,226 INFO  L87              Difference]: Start difference. First operand 43 states and 105 transitions. Second operand 9 states.
[2020-11-09 14:52:41,404 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:41,405 INFO  L93              Difference]: Finished difference Result 56 states and 131 transitions.
[2020-11-09 14:52:41,405 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-11-09 14:52:41,405 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 12
[2020-11-09 14:52:41,406 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:41,406 INFO  L225             Difference]: With dead ends: 56
[2020-11-09 14:52:41,406 INFO  L226             Difference]: Without dead ends: 50
[2020-11-09 14:52:41,407 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210
[2020-11-09 14:52:41,408 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-11-09 14:52:41,411 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47.
[2020-11-09 14:52:41,411 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-11-09 14:52:41,412 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 113 transitions.
[2020-11-09 14:52:41,412 INFO  L78                 Accepts]: Start accepts. Automaton has 47 states and 113 transitions. Word has length 12
[2020-11-09 14:52:41,412 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:41,412 INFO  L481      AbstractCegarLoop]: Abstraction has 47 states and 113 transitions.
[2020-11-09 14:52:41,412 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-11-09 14:52:41,413 INFO  L276                IsEmpty]: Start isEmpty. Operand 47 states and 113 transitions.
[2020-11-09 14:52:41,413 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-11-09 14:52:41,413 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:41,414 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:41,625 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:41,626 INFO  L429      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:41,627 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:41,627 INFO  L82        PathProgramCache]: Analyzing trace with hash 1320372483, now seen corresponding path program 6 times
[2020-11-09 14:52:41,629 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:41,630 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838543750]
[2020-11-09 14:52:41,630 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:41,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:41,703 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:41,704 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838543750]
[2020-11-09 14:52:41,704 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252197113]
[2020-11-09 14:52:41,704 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:41,781 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2020-11-09 14:52:41,781 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:41,782 INFO  L263         TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-11-09 14:52:41,783 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:41,817 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:41,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:41,834 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:41,834 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7
[2020-11-09 14:52:41,835 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1588564985]
[2020-11-09 14:52:41,835 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:41,836 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:41,838 INFO  L252    McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions.
[2020-11-09 14:52:41,838 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:41,847 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:52:41,847 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-11-09 14:52:41,847 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:41,848 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-11-09 14:52:41,848 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2020-11-09 14:52:41,848 INFO  L87              Difference]: Start difference. First operand 47 states and 113 transitions. Second operand 8 states.
[2020-11-09 14:52:42,113 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:42,113 INFO  L93              Difference]: Finished difference Result 64 states and 151 transitions.
[2020-11-09 14:52:42,113 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-11-09 14:52:42,114 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 12
[2020-11-09 14:52:42,114 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:42,115 INFO  L225             Difference]: With dead ends: 64
[2020-11-09 14:52:42,115 INFO  L226             Difference]: Without dead ends: 59
[2020-11-09 14:52:42,115 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306
[2020-11-09 14:52:42,116 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2020-11-09 14:52:42,119 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42.
[2020-11-09 14:52:42,119 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-11-09 14:52:42,120 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 99 transitions.
[2020-11-09 14:52:42,120 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 99 transitions. Word has length 12
[2020-11-09 14:52:42,120 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:42,120 INFO  L481      AbstractCegarLoop]: Abstraction has 42 states and 99 transitions.
[2020-11-09 14:52:42,120 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-11-09 14:52:42,121 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 99 transitions.
[2020-11-09 14:52:42,121 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-11-09 14:52:42,121 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:42,121 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:42,331 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:42,332 INFO  L429      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:42,333 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:42,333 INFO  L82        PathProgramCache]: Analyzing trace with hash -311794613, now seen corresponding path program 7 times
[2020-11-09 14:52:42,336 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:42,336 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598049821]
[2020-11-09 14:52:42,336 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:42,358 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:42,429 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:42,429 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598049821]
[2020-11-09 14:52:42,430 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160573286]
[2020-11-09 14:52:42,431 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:42,502 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:42,503 INFO  L263         TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-11-09 14:52:42,504 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:42,525 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:52:42,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:42,543 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:42,543 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7
[2020-11-09 14:52:42,544 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1019291754]
[2020-11-09 14:52:42,544 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:42,545 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:42,548 INFO  L252    McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions.
[2020-11-09 14:52:42,548 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:42,580 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1631#(and (<= ~i~0 9) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:52:42,580 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-11-09 14:52:42,581 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:42,581 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-11-09 14:52:42,582 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2020-11-09 14:52:42,582 INFO  L87              Difference]: Start difference. First operand 42 states and 99 transitions. Second operand 9 states.
[2020-11-09 14:52:42,758 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:42,758 INFO  L93              Difference]: Finished difference Result 72 states and 169 transitions.
[2020-11-09 14:52:42,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-11-09 14:52:42,759 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 12
[2020-11-09 14:52:42,759 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:42,760 INFO  L225             Difference]: With dead ends: 72
[2020-11-09 14:52:42,760 INFO  L226             Difference]: Without dead ends: 63
[2020-11-09 14:52:42,761 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272
[2020-11-09 14:52:42,761 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2020-11-09 14:52:42,764 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 48.
[2020-11-09 14:52:42,765 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 48 states.
[2020-11-09 14:52:42,765 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 117 transitions.
[2020-11-09 14:52:42,765 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 117 transitions. Word has length 12
[2020-11-09 14:52:42,766 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:42,766 INFO  L481      AbstractCegarLoop]: Abstraction has 48 states and 117 transitions.
[2020-11-09 14:52:42,766 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-11-09 14:52:42,766 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 117 transitions.
[2020-11-09 14:52:42,767 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-11-09 14:52:42,767 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:42,767 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:42,978 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:42,979 INFO  L429      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:42,979 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:42,980 INFO  L82        PathProgramCache]: Analyzing trace with hash -2018100772, now seen corresponding path program 8 times
[2020-11-09 14:52:42,982 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:42,982 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814079560]
[2020-11-09 14:52:42,982 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:42,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:43,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:43,062 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814079560]
[2020-11-09 14:52:43,063 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659520139]
[2020-11-09 14:52:43,063 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:43,135 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-11-09 14:52:43,135 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:43,136 INFO  L263         TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-11-09 14:52:43,137 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:43,163 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:52:43,174 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:43,175 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:43,175 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8
[2020-11-09 14:52:43,175 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1638900964]
[2020-11-09 14:52:43,176 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:43,177 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:43,180 INFO  L252    McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions.
[2020-11-09 14:52:43,180 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:43,209 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1860#(and (<= ~i~0 7) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:52:43,209 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-11-09 14:52:43,210 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:43,210 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-11-09 14:52:43,210 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2020-11-09 14:52:43,211 INFO  L87              Difference]: Start difference. First operand 48 states and 117 transitions. Second operand 10 states.
[2020-11-09 14:52:43,568 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:43,568 INFO  L93              Difference]: Finished difference Result 72 states and 169 transitions.
[2020-11-09 14:52:43,569 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-11-09 14:52:43,569 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 13
[2020-11-09 14:52:43,569 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:43,570 INFO  L225             Difference]: With dead ends: 72
[2020-11-09 14:52:43,570 INFO  L226             Difference]: Without dead ends: 63
[2020-11-09 14:52:43,571 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462
[2020-11-09 14:52:43,571 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2020-11-09 14:52:43,574 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41.
[2020-11-09 14:52:43,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2020-11-09 14:52:43,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 97 transitions.
[2020-11-09 14:52:43,575 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states and 97 transitions. Word has length 13
[2020-11-09 14:52:43,575 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:43,575 INFO  L481      AbstractCegarLoop]: Abstraction has 41 states and 97 transitions.
[2020-11-09 14:52:43,575 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-11-09 14:52:43,575 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states and 97 transitions.
[2020-11-09 14:52:43,576 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-11-09 14:52:43,576 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:43,576 INFO  L422         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:43,786 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:43,787 INFO  L429      AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:43,788 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:43,788 INFO  L82        PathProgramCache]: Analyzing trace with hash -1075670313, now seen corresponding path program 9 times
[2020-11-09 14:52:43,790 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:43,791 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306849582]
[2020-11-09 14:52:43,791 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:43,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:43,892 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:43,892 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306849582]
[2020-11-09 14:52:43,892 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796410944]
[2020-11-09 14:52:43,892 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:43,960 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2020-11-09 14:52:43,960 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:43,961 INFO  L263         TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core
[2020-11-09 14:52:43,962 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:43,985 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:43,997 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:43,998 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:43,998 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8
[2020-11-09 14:52:43,998 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [456398634]
[2020-11-09 14:52:43,999 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:44,000 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:44,003 INFO  L252    McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions.
[2020-11-09 14:52:44,003 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:44,020 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:52:44,021 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-11-09 14:52:44,021 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:44,021 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-11-09 14:52:44,022 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2020-11-09 14:52:44,022 INFO  L87              Difference]: Start difference. First operand 41 states and 97 transitions. Second operand 9 states.
[2020-11-09 14:52:44,287 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:44,287 INFO  L93              Difference]: Finished difference Result 64 states and 153 transitions.
[2020-11-09 14:52:44,288 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-11-09 14:52:44,288 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 13
[2020-11-09 14:52:44,289 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:44,289 INFO  L225             Difference]: With dead ends: 64
[2020-11-09 14:52:44,289 INFO  L226             Difference]: Without dead ends: 59
[2020-11-09 14:52:44,290 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342
[2020-11-09 14:52:44,291 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2020-11-09 14:52:44,298 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49.
[2020-11-09 14:52:44,298 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 49 states.
[2020-11-09 14:52:44,298 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 121 transitions.
[2020-11-09 14:52:44,299 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states and 121 transitions. Word has length 13
[2020-11-09 14:52:44,301 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:44,301 INFO  L481      AbstractCegarLoop]: Abstraction has 49 states and 121 transitions.
[2020-11-09 14:52:44,301 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-11-09 14:52:44,301 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states and 121 transitions.
[2020-11-09 14:52:44,303 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-11-09 14:52:44,304 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:44,304 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:44,517 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:44,517 INFO  L429      AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:44,518 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:44,518 INFO  L82        PathProgramCache]: Analyzing trace with hash 198162772, now seen corresponding path program 10 times
[2020-11-09 14:52:44,520 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:44,521 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544000775]
[2020-11-09 14:52:44,521 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:44,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:44,675 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:44,675 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544000775]
[2020-11-09 14:52:44,675 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054597111]
[2020-11-09 14:52:44,675 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:44,746 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-11-09 14:52:44,747 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:44,748 INFO  L263         TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-11-09 14:52:44,749 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:44,754 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:44,788 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:44,788 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:44,789 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2020-11-09 14:52:44,789 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [591646821]
[2020-11-09 14:52:44,789 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:44,791 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:44,797 INFO  L252    McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions.
[2020-11-09 14:52:44,797 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:44,832 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:44,833 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:44,868 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:44,868 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:44,897 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:44,898 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:44,915 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2312#(and (< ~i~0 26) (<= ~j~0 6))]
[2020-11-09 14:52:44,915 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-11-09 14:52:44,916 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:44,916 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-11-09 14:52:44,917 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2020-11-09 14:52:44,917 INFO  L87              Difference]: Start difference. First operand 49 states and 121 transitions. Second operand 11 states.
[2020-11-09 14:52:45,191 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:45,191 INFO  L93              Difference]: Finished difference Result 64 states and 151 transitions.
[2020-11-09 14:52:45,193 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-11-09 14:52:45,193 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 14
[2020-11-09 14:52:45,194 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:45,194 INFO  L225             Difference]: With dead ends: 64
[2020-11-09 14:52:45,194 INFO  L226             Difference]: Without dead ends: 58
[2020-11-09 14:52:45,195 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342
[2020-11-09 14:52:45,196 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2020-11-09 14:52:45,203 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53.
[2020-11-09 14:52:45,203 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2020-11-09 14:52:45,204 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 129 transitions.
[2020-11-09 14:52:45,208 INFO  L78                 Accepts]: Start accepts. Automaton has 53 states and 129 transitions. Word has length 14
[2020-11-09 14:52:45,208 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:45,208 INFO  L481      AbstractCegarLoop]: Abstraction has 53 states and 129 transitions.
[2020-11-09 14:52:45,209 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-11-09 14:52:45,209 INFO  L276                IsEmpty]: Start isEmpty. Operand 53 states and 129 transitions.
[2020-11-09 14:52:45,209 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-11-09 14:52:45,209 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:45,210 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:45,423 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2020-11-09 14:52:45,424 INFO  L429      AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:45,425 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:45,425 INFO  L82        PathProgramCache]: Analyzing trace with hash 1863413606, now seen corresponding path program 11 times
[2020-11-09 14:52:45,427 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:45,427 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913545945]
[2020-11-09 14:52:45,427 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:45,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:45,515 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:45,516 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913545945]
[2020-11-09 14:52:45,516 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723078286]
[2020-11-09 14:52:45,517 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:45,583 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2020-11-09 14:52:45,583 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:45,584 INFO  L263         TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-11-09 14:52:45,585 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:45,612 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:45,627 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:45,627 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:45,627 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2020-11-09 14:52:45,627 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [701882027]
[2020-11-09 14:52:45,628 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:45,629 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:45,634 INFO  L252    McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions.
[2020-11-09 14:52:45,634 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:45,644 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:52:45,644 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-11-09 14:52:45,644 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:45,645 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-11-09 14:52:45,645 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2020-11-09 14:52:45,645 INFO  L87              Difference]: Start difference. First operand 53 states and 129 transitions. Second operand 10 states.
[2020-11-09 14:52:46,024 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:46,025 INFO  L93              Difference]: Finished difference Result 74 states and 175 transitions.
[2020-11-09 14:52:46,025 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-11-09 14:52:46,025 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 14
[2020-11-09 14:52:46,026 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:46,026 INFO  L225             Difference]: With dead ends: 74
[2020-11-09 14:52:46,026 INFO  L226             Difference]: Without dead ends: 69
[2020-11-09 14:52:46,027 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552
[2020-11-09 14:52:46,027 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2020-11-09 14:52:46,035 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46.
[2020-11-09 14:52:46,035 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2020-11-09 14:52:46,035 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 109 transitions.
[2020-11-09 14:52:46,035 INFO  L78                 Accepts]: Start accepts. Automaton has 46 states and 109 transitions. Word has length 14
[2020-11-09 14:52:46,036 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:46,036 INFO  L481      AbstractCegarLoop]: Abstraction has 46 states and 109 transitions.
[2020-11-09 14:52:46,036 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-11-09 14:52:46,038 INFO  L276                IsEmpty]: Start isEmpty. Operand 46 states and 109 transitions.
[2020-11-09 14:52:46,038 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-11-09 14:52:46,040 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:46,040 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:46,241 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:46,241 INFO  L429      AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:46,242 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:46,243 INFO  L82        PathProgramCache]: Analyzing trace with hash 1013983880, now seen corresponding path program 12 times
[2020-11-09 14:52:46,244 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:46,244 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918743851]
[2020-11-09 14:52:46,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:46,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:46,328 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:46,329 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918743851]
[2020-11-09 14:52:46,329 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953313181]
[2020-11-09 14:52:46,329 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:46,408 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s)
[2020-11-09 14:52:46,408 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:46,409 INFO  L263         TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-11-09 14:52:46,410 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:46,442 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:46,445 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:46,445 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2020-11-09 14:52:46,445 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [289396366]
[2020-11-09 14:52:46,445 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:46,449 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:46,454 INFO  L252    McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions.
[2020-11-09 14:52:46,454 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:46,499 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2791#(and (= ULTIMATE.start_main_~condI~0 0) (<= ~i~0 11))]
[2020-11-09 14:52:46,499 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-11-09 14:52:46,499 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:46,500 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-11-09 14:52:46,500 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2020-11-09 14:52:46,500 INFO  L87              Difference]: Start difference. First operand 46 states and 109 transitions. Second operand 11 states.
[2020-11-09 14:52:46,845 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:46,846 INFO  L93              Difference]: Finished difference Result 82 states and 193 transitions.
[2020-11-09 14:52:46,846 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-11-09 14:52:46,846 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 14
[2020-11-09 14:52:46,847 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:46,848 INFO  L225             Difference]: With dead ends: 82
[2020-11-09 14:52:46,848 INFO  L226             Difference]: Without dead ends: 73
[2020-11-09 14:52:46,849 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506
[2020-11-09 14:52:46,850 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2020-11-09 14:52:46,853 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54.
[2020-11-09 14:52:46,853 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 54 states.
[2020-11-09 14:52:46,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 133 transitions.
[2020-11-09 14:52:46,854 INFO  L78                 Accepts]: Start accepts. Automaton has 54 states and 133 transitions. Word has length 14
[2020-11-09 14:52:46,854 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:46,854 INFO  L481      AbstractCegarLoop]: Abstraction has 54 states and 133 transitions.
[2020-11-09 14:52:46,854 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-11-09 14:52:46,854 INFO  L276                IsEmpty]: Start isEmpty. Operand 54 states and 133 transitions.
[2020-11-09 14:52:46,855 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-11-09 14:52:46,855 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:46,855 INFO  L422         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:47,057 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:47,058 INFO  L429      AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:47,059 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:47,059 INFO  L82        PathProgramCache]: Analyzing trace with hash 1931272153, now seen corresponding path program 13 times
[2020-11-09 14:52:47,060 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:47,061 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791184358]
[2020-11-09 14:52:47,061 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:47,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:47,158 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:47,158 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791184358]
[2020-11-09 14:52:47,159 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333130440]
[2020-11-09 14:52:47,159 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:47,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:47,232 INFO  L263         TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-11-09 14:52:47,233 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:47,260 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:52:47,275 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:47,276 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:47,276 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2020-11-09 14:52:47,276 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [359891226]
[2020-11-09 14:52:47,276 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:47,279 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:47,282 INFO  L252    McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions.
[2020-11-09 14:52:47,283 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:47,308 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3058#(and (<= ~i~0 9) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:52:47,308 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-11-09 14:52:47,309 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:47,309 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-11-09 14:52:47,309 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2020-11-09 14:52:47,310 INFO  L87              Difference]: Start difference. First operand 54 states and 133 transitions. Second operand 12 states.
[2020-11-09 14:52:47,725 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:47,726 INFO  L93              Difference]: Finished difference Result 82 states and 193 transitions.
[2020-11-09 14:52:47,726 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-11-09 14:52:47,726 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 15
[2020-11-09 14:52:47,726 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:47,727 INFO  L225             Difference]: With dead ends: 82
[2020-11-09 14:52:47,727 INFO  L226             Difference]: Without dead ends: 73
[2020-11-09 14:52:47,728 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756
[2020-11-09 14:52:47,729 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2020-11-09 14:52:47,735 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45.
[2020-11-09 14:52:47,736 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2020-11-09 14:52:47,739 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 107 transitions.
[2020-11-09 14:52:47,740 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states and 107 transitions. Word has length 15
[2020-11-09 14:52:47,740 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:47,740 INFO  L481      AbstractCegarLoop]: Abstraction has 45 states and 107 transitions.
[2020-11-09 14:52:47,740 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-11-09 14:52:47,740 INFO  L276                IsEmpty]: Start isEmpty. Operand 45 states and 107 transitions.
[2020-11-09 14:52:47,741 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-11-09 14:52:47,741 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:47,741 INFO  L422         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:47,943 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2020-11-09 14:52:47,943 INFO  L429      AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:47,944 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:47,944 INFO  L82        PathProgramCache]: Analyzing trace with hash 1368757306, now seen corresponding path program 14 times
[2020-11-09 14:52:47,946 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:47,946 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812117355]
[2020-11-09 14:52:47,946 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:47,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:48,042 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:48,042 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812117355]
[2020-11-09 14:52:48,042 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383396391]
[2020-11-09 14:52:48,042 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:48,119 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-11-09 14:52:48,119 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:48,120 INFO  L263         TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-11-09 14:52:48,122 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:48,159 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:48,172 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:48,172 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:48,172 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2020-11-09 14:52:48,172 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [79699499]
[2020-11-09 14:52:48,173 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:48,174 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:48,177 INFO  L252    McrAutomatonBuilder]: Finished intersection with 22 states and 27 transitions.
[2020-11-09 14:52:48,178 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:48,192 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:52:48,193 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-11-09 14:52:48,193 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:48,193 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-11-09 14:52:48,193 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132
[2020-11-09 14:52:48,193 INFO  L87              Difference]: Start difference. First operand 45 states and 107 transitions. Second operand 11 states.
[2020-11-09 14:52:48,592 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:48,592 INFO  L93              Difference]: Finished difference Result 72 states and 173 transitions.
[2020-11-09 14:52:48,594 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-11-09 14:52:48,594 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 15
[2020-11-09 14:52:48,595 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:48,595 INFO  L225             Difference]: With dead ends: 72
[2020-11-09 14:52:48,596 INFO  L226             Difference]: Without dead ends: 67
[2020-11-09 14:52:48,596 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600
[2020-11-09 14:52:48,597 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2020-11-09 14:52:48,602 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55.
[2020-11-09 14:52:48,602 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2020-11-09 14:52:48,603 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 137 transitions.
[2020-11-09 14:52:48,603 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 137 transitions. Word has length 15
[2020-11-09 14:52:48,603 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:48,603 INFO  L481      AbstractCegarLoop]: Abstraction has 55 states and 137 transitions.
[2020-11-09 14:52:48,603 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-11-09 14:52:48,603 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 137 transitions.
[2020-11-09 14:52:48,604 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-11-09 14:52:48,604 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:48,604 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:48,814 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2020-11-09 14:52:48,815 INFO  L429      AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:48,815 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:48,816 INFO  L82        PathProgramCache]: Analyzing trace with hash 1455869111, now seen corresponding path program 15 times
[2020-11-09 14:52:48,817 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:48,818 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010414125]
[2020-11-09 14:52:48,818 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:48,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:48,980 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:48,981 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010414125]
[2020-11-09 14:52:48,981 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327359650]
[2020-11-09 14:52:48,981 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:49,046 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2020-11-09 14:52:49,047 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:49,048 INFO  L263         TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-11-09 14:52:49,049 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:49,051 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:49,064 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:49,065 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:49,065 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2020-11-09 14:52:49,065 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [144410677]
[2020-11-09 14:52:49,065 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:49,067 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:49,070 INFO  L252    McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions.
[2020-11-09 14:52:49,070 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:49,090 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:49,090 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:49,119 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:49,119 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:49,139 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:49,140 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:49,152 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3580#(and (< ~i~0 26) (<= ~j~0 6))]
[2020-11-09 14:52:49,152 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-11-09 14:52:49,152 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:49,153 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-11-09 14:52:49,153 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156
[2020-11-09 14:52:49,153 INFO  L87              Difference]: Start difference. First operand 55 states and 137 transitions. Second operand 13 states.
[2020-11-09 14:52:49,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:49,443 INFO  L93              Difference]: Finished difference Result 72 states and 171 transitions.
[2020-11-09 14:52:49,443 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-11-09 14:52:49,443 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 16
[2020-11-09 14:52:49,444 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:49,445 INFO  L225             Difference]: With dead ends: 72
[2020-11-09 14:52:49,445 INFO  L226             Difference]: Without dead ends: 66
[2020-11-09 14:52:49,446 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506
[2020-11-09 14:52:49,447 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2020-11-09 14:52:49,449 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59.
[2020-11-09 14:52:49,449 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 59 states.
[2020-11-09 14:52:49,450 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 145 transitions.
[2020-11-09 14:52:49,450 INFO  L78                 Accepts]: Start accepts. Automaton has 59 states and 145 transitions. Word has length 16
[2020-11-09 14:52:49,450 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:49,450 INFO  L481      AbstractCegarLoop]: Abstraction has 59 states and 145 transitions.
[2020-11-09 14:52:49,450 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-11-09 14:52:49,450 INFO  L276                IsEmpty]: Start isEmpty. Operand 59 states and 145 transitions.
[2020-11-09 14:52:49,451 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-11-09 14:52:49,451 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:49,451 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:49,653 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2020-11-09 14:52:49,654 INFO  L429      AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:49,654 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:49,655 INFO  L82        PathProgramCache]: Analyzing trace with hash -260077303, now seen corresponding path program 16 times
[2020-11-09 14:52:49,656 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:49,657 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392913652]
[2020-11-09 14:52:49,657 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:49,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:49,759 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:49,760 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392913652]
[2020-11-09 14:52:49,760 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720684851]
[2020-11-09 14:52:49,760 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:49,831 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-11-09 14:52:49,831 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:49,832 INFO  L263         TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-11-09 14:52:49,833 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:49,863 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:49,877 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:49,878 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:49,878 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11
[2020-11-09 14:52:49,878 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2003968953]
[2020-11-09 14:52:49,878 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:49,880 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:49,883 INFO  L252    McrAutomatonBuilder]: Finished intersection with 21 states and 24 transitions.
[2020-11-09 14:52:49,883 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:49,891 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:52:49,891 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-11-09 14:52:49,891 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:49,893 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-11-09 14:52:49,893 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2020-11-09 14:52:49,893 INFO  L87              Difference]: Start difference. First operand 59 states and 145 transitions. Second operand 12 states.
[2020-11-09 14:52:50,363 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:50,363 INFO  L93              Difference]: Finished difference Result 84 states and 199 transitions.
[2020-11-09 14:52:50,364 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-11-09 14:52:50,365 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 16
[2020-11-09 14:52:50,365 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:50,366 INFO  L225             Difference]: With dead ends: 84
[2020-11-09 14:52:50,366 INFO  L226             Difference]: Without dead ends: 79
[2020-11-09 14:52:50,366 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=589, Unknown=0, NotChecked=0, Total=870
[2020-11-09 14:52:50,367 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2020-11-09 14:52:50,369 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 50.
[2020-11-09 14:52:50,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-11-09 14:52:50,369 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 119 transitions.
[2020-11-09 14:52:50,369 INFO  L78                 Accepts]: Start accepts. Automaton has 50 states and 119 transitions. Word has length 16
[2020-11-09 14:52:50,370 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:50,370 INFO  L481      AbstractCegarLoop]: Abstraction has 50 states and 119 transitions.
[2020-11-09 14:52:50,370 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-11-09 14:52:50,370 INFO  L276                IsEmpty]: Start isEmpty. Operand 50 states and 119 transitions.
[2020-11-09 14:52:50,370 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-11-09 14:52:50,370 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:50,371 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:50,580 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:50,581 INFO  L429      AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:50,581 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:50,582 INFO  L82        PathProgramCache]: Analyzing trace with hash -518171259, now seen corresponding path program 17 times
[2020-11-09 14:52:50,583 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:50,583 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127615098]
[2020-11-09 14:52:50,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:50,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:50,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:50,678 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127615098]
[2020-11-09 14:52:50,679 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335822088]
[2020-11-09 14:52:50,679 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:50,743 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2020-11-09 14:52:50,744 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:50,744 INFO  L263         TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core
[2020-11-09 14:52:50,745 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:50,771 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:52:50,788 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:50,788 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:50,789 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11
[2020-11-09 14:52:50,789 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2093748843]
[2020-11-09 14:52:50,789 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:50,791 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:50,794 INFO  L252    McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions.
[2020-11-09 14:52:50,794 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:50,840 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4125#(and (<= ~i~0 13) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:52:50,840 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-11-09 14:52:50,840 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:50,841 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-11-09 14:52:50,841 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182
[2020-11-09 14:52:50,841 INFO  L87              Difference]: Start difference. First operand 50 states and 119 transitions. Second operand 13 states.
[2020-11-09 14:52:51,276 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:51,277 INFO  L93              Difference]: Finished difference Result 92 states and 217 transitions.
[2020-11-09 14:52:51,277 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-11-09 14:52:51,278 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 16
[2020-11-09 14:52:51,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:51,279 INFO  L225             Difference]: With dead ends: 92
[2020-11-09 14:52:51,279 INFO  L226             Difference]: Without dead ends: 83
[2020-11-09 14:52:51,279 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812
[2020-11-09 14:52:51,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2020-11-09 14:52:51,281 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60.
[2020-11-09 14:52:51,281 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2020-11-09 14:52:51,282 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 149 transitions.
[2020-11-09 14:52:51,283 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 149 transitions. Word has length 16
[2020-11-09 14:52:51,283 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:51,283 INFO  L481      AbstractCegarLoop]: Abstraction has 60 states and 149 transitions.
[2020-11-09 14:52:51,283 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-11-09 14:52:51,283 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 149 transitions.
[2020-11-09 14:52:51,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-11-09 14:52:51,283 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:51,284 INFO  L422         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:51,485 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:51,486 INFO  L429      AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:51,486 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:51,486 INFO  L82        PathProgramCache]: Analyzing trace with hash 527563414, now seen corresponding path program 18 times
[2020-11-09 14:52:51,488 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:51,488 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87515900]
[2020-11-09 14:52:51,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:51,500 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:51,657 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:51,658 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87515900]
[2020-11-09 14:52:51,658 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690153744]
[2020-11-09 14:52:51,658 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:51,735 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2020-11-09 14:52:51,735 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:51,736 INFO  L263         TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-11-09 14:52:51,738 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:51,774 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:52:51,796 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:51,797 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:51,797 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12
[2020-11-09 14:52:51,797 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1854616140]
[2020-11-09 14:52:51,797 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:51,800 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:51,804 INFO  L252    McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions.
[2020-11-09 14:52:51,804 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:51,831 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4430#(and (= ULTIMATE.start_main_~condI~0 0) (<= ~i~0 11))]
[2020-11-09 14:52:51,832 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-11-09 14:52:51,832 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:51,833 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-11-09 14:52:51,833 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210
[2020-11-09 14:52:51,833 INFO  L87              Difference]: Start difference. First operand 60 states and 149 transitions. Second operand 14 states.
[2020-11-09 14:52:52,398 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:52,398 INFO  L93              Difference]: Finished difference Result 92 states and 217 transitions.
[2020-11-09 14:52:52,400 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2020-11-09 14:52:52,400 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 17
[2020-11-09 14:52:52,401 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:52,401 INFO  L225             Difference]: With dead ends: 92
[2020-11-09 14:52:52,401 INFO  L226             Difference]: Without dead ends: 83
[2020-11-09 14:52:52,402 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=352, Invalid=770, Unknown=0, NotChecked=0, Total=1122
[2020-11-09 14:52:52,402 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2020-11-09 14:52:52,404 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 49.
[2020-11-09 14:52:52,404 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 49 states.
[2020-11-09 14:52:52,405 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions.
[2020-11-09 14:52:52,405 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states and 117 transitions. Word has length 17
[2020-11-09 14:52:52,405 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:52,405 INFO  L481      AbstractCegarLoop]: Abstraction has 49 states and 117 transitions.
[2020-11-09 14:52:52,405 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-11-09 14:52:52,405 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states and 117 transitions.
[2020-11-09 14:52:52,406 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-11-09 14:52:52,406 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:52,406 INFO  L422         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:52,609 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:52,610 INFO  L429      AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:52,610 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:52,611 INFO  L82        PathProgramCache]: Analyzing trace with hash 1116588253, now seen corresponding path program 19 times
[2020-11-09 14:52:52,613 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:52,613 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762839004]
[2020-11-09 14:52:52,613 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:52,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:52,727 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:52,727 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762839004]
[2020-11-09 14:52:52,727 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104379385]
[2020-11-09 14:52:52,727 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:52,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:52,801 INFO  L263         TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core
[2020-11-09 14:52:52,802 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:52,826 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:52,843 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:52,843 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:52,844 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12
[2020-11-09 14:52:52,844 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1329320770]
[2020-11-09 14:52:52,844 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:52,846 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:52,849 INFO  L252    McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions.
[2020-11-09 14:52:52,849 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:52,865 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:52:52,866 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-11-09 14:52:52,866 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:52,866 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-11-09 14:52:52,866 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182
[2020-11-09 14:52:52,867 INFO  L87              Difference]: Start difference. First operand 49 states and 117 transitions. Second operand 13 states.
[2020-11-09 14:52:53,389 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:53,389 INFO  L93              Difference]: Finished difference Result 80 states and 193 transitions.
[2020-11-09 14:52:53,390 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-11-09 14:52:53,390 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 17
[2020-11-09 14:52:53,390 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:53,391 INFO  L225             Difference]: With dead ends: 80
[2020-11-09 14:52:53,391 INFO  L226             Difference]: Without dead ends: 75
[2020-11-09 14:52:53,392 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=294, Invalid=636, Unknown=0, NotChecked=0, Total=930
[2020-11-09 14:52:53,393 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2020-11-09 14:52:53,400 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61.
[2020-11-09 14:52:53,400 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2020-11-09 14:52:53,401 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 153 transitions.
[2020-11-09 14:52:53,401 INFO  L78                 Accepts]: Start accepts. Automaton has 61 states and 153 transitions. Word has length 17
[2020-11-09 14:52:53,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:53,401 INFO  L481      AbstractCegarLoop]: Abstraction has 61 states and 153 transitions.
[2020-11-09 14:52:53,401 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-11-09 14:52:53,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 61 states and 153 transitions.
[2020-11-09 14:52:53,402 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-11-09 14:52:53,402 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:53,402 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:53,610 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20
[2020-11-09 14:52:53,611 INFO  L429      AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:53,611 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:53,612 INFO  L82        PathProgramCache]: Analyzing trace with hash -1069116582, now seen corresponding path program 20 times
[2020-11-09 14:52:53,614 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:53,614 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803763857]
[2020-11-09 14:52:53,614 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:53,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:53,785 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:53,785 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803763857]
[2020-11-09 14:52:53,786 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073706675]
[2020-11-09 14:52:53,786 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:53,852 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-11-09 14:52:53,852 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:53,853 INFO  L263         TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-11-09 14:52:53,855 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:53,857 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:53,878 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:53,879 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:53,879 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12
[2020-11-09 14:52:53,879 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [569871626]
[2020-11-09 14:52:53,879 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:53,881 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:53,885 INFO  L252    McrAutomatonBuilder]: Finished intersection with 26 states and 33 transitions.
[2020-11-09 14:52:53,885 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:53,912 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:53,912 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:53,941 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:53,941 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:53,965 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:53,965 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:53,981 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5022#(and (< ~i~0 26) (<= ~j~0 6))]
[2020-11-09 14:52:53,982 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-11-09 14:52:53,982 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:53,982 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-11-09 14:52:53,983 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210
[2020-11-09 14:52:53,983 INFO  L87              Difference]: Start difference. First operand 61 states and 153 transitions. Second operand 15 states.
[2020-11-09 14:52:54,333 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:54,333 INFO  L93              Difference]: Finished difference Result 80 states and 191 transitions.
[2020-11-09 14:52:54,334 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-11-09 14:52:54,335 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 18
[2020-11-09 14:52:54,335 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:54,336 INFO  L225             Difference]: With dead ends: 80
[2020-11-09 14:52:54,336 INFO  L226             Difference]: Without dead ends: 74
[2020-11-09 14:52:54,337 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702
[2020-11-09 14:52:54,337 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2020-11-09 14:52:54,339 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65.
[2020-11-09 14:52:54,339 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2020-11-09 14:52:54,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 161 transitions.
[2020-11-09 14:52:54,340 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 161 transitions. Word has length 18
[2020-11-09 14:52:54,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:54,340 INFO  L481      AbstractCegarLoop]: Abstraction has 65 states and 161 transitions.
[2020-11-09 14:52:54,340 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-11-09 14:52:54,340 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 161 transitions.
[2020-11-09 14:52:54,341 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-11-09 14:52:54,341 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:54,341 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:54,541 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2020-11-09 14:52:54,542 INFO  L429      AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:54,542 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:54,543 INFO  L82        PathProgramCache]: Analyzing trace with hash -825375252, now seen corresponding path program 21 times
[2020-11-09 14:52:54,544 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:54,545 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420879033]
[2020-11-09 14:52:54,545 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:54,556 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:54,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:54,670 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420879033]
[2020-11-09 14:52:54,670 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433859380]
[2020-11-09 14:52:54,670 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:54,745 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2020-11-09 14:52:54,745 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:54,746 INFO  L263         TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-11-09 14:52:54,748 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:54,784 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:54,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:54,799 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:54,800 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2020-11-09 14:52:54,800 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1955151917]
[2020-11-09 14:52:54,800 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:54,802 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:54,804 INFO  L252    McrAutomatonBuilder]: Finished intersection with 23 states and 26 transitions.
[2020-11-09 14:52:54,804 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:54,812 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:52:54,812 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-11-09 14:52:54,812 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:54,813 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-11-09 14:52:54,813 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210
[2020-11-09 14:52:54,813 INFO  L87              Difference]: Start difference. First operand 65 states and 161 transitions. Second operand 14 states.
[2020-11-09 14:52:55,441 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:55,442 INFO  L93              Difference]: Finished difference Result 94 states and 223 transitions.
[2020-11-09 14:52:55,445 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-11-09 14:52:55,446 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 18
[2020-11-09 14:52:55,446 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:55,447 INFO  L225             Difference]: With dead ends: 94
[2020-11-09 14:52:55,447 INFO  L226             Difference]: Without dead ends: 89
[2020-11-09 14:52:55,447 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=404, Invalid=856, Unknown=0, NotChecked=0, Total=1260
[2020-11-09 14:52:55,448 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2020-11-09 14:52:55,450 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 54.
[2020-11-09 14:52:55,450 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 54 states.
[2020-11-09 14:52:55,450 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 129 transitions.
[2020-11-09 14:52:55,451 INFO  L78                 Accepts]: Start accepts. Automaton has 54 states and 129 transitions. Word has length 18
[2020-11-09 14:52:55,451 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:55,451 INFO  L481      AbstractCegarLoop]: Abstraction has 54 states and 129 transitions.
[2020-11-09 14:52:55,451 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-11-09 14:52:55,451 INFO  L276                IsEmpty]: Start isEmpty. Operand 54 states and 129 transitions.
[2020-11-09 14:52:55,451 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-11-09 14:52:55,452 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:55,452 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:55,660 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2020-11-09 14:52:55,661 INFO  L429      AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:55,662 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:55,662 INFO  L82        PathProgramCache]: Analyzing trace with hash 254522690, now seen corresponding path program 22 times
[2020-11-09 14:52:55,664 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:55,664 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033428085]
[2020-11-09 14:52:55,664 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:55,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:55,783 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:55,784 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033428085]
[2020-11-09 14:52:55,784 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983020391]
[2020-11-09 14:52:55,784 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:55,861 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-11-09 14:52:55,861 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:55,862 INFO  L263         TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core
[2020-11-09 14:52:55,864 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:55,909 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:52:55,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:55,923 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:55,923 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2020-11-09 14:52:55,923 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1431454477]
[2020-11-09 14:52:55,924 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:55,927 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:55,932 INFO  L252    McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions.
[2020-11-09 14:52:55,933 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:55,978 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5633#(and (= ULTIMATE.start_main_~condI~0 0) (<= ~i~0 15))]
[2020-11-09 14:52:55,978 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-11-09 14:52:55,978 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:55,979 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-11-09 14:52:55,979 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240
[2020-11-09 14:52:55,979 INFO  L87              Difference]: Start difference. First operand 54 states and 129 transitions. Second operand 15 states.
[2020-11-09 14:52:56,569 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:56,570 INFO  L93              Difference]: Finished difference Result 102 states and 241 transitions.
[2020-11-09 14:52:56,570 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2020-11-09 14:52:56,570 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 18
[2020-11-09 14:52:56,570 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:56,571 INFO  L225             Difference]: With dead ends: 102
[2020-11-09 14:52:56,571 INFO  L226             Difference]: Without dead ends: 93
[2020-11-09 14:52:56,572 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=365, Invalid=825, Unknown=0, NotChecked=0, Total=1190
[2020-11-09 14:52:56,572 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2020-11-09 14:52:56,575 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66.
[2020-11-09 14:52:56,575 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 66 states.
[2020-11-09 14:52:56,576 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 165 transitions.
[2020-11-09 14:52:56,576 INFO  L78                 Accepts]: Start accepts. Automaton has 66 states and 165 transitions. Word has length 18
[2020-11-09 14:52:56,576 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:56,576 INFO  L481      AbstractCegarLoop]: Abstraction has 66 states and 165 transitions.
[2020-11-09 14:52:56,576 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-11-09 14:52:56,576 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states and 165 transitions.
[2020-11-09 14:52:56,577 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-11-09 14:52:56,577 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:56,577 INFO  L422         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:56,778 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2020-11-09 14:52:56,778 INFO  L429      AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:56,779 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:56,779 INFO  L82        PathProgramCache]: Analyzing trace with hash 183196179, now seen corresponding path program 23 times
[2020-11-09 14:52:56,781 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:56,781 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962014953]
[2020-11-09 14:52:56,781 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:56,794 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:56,945 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:56,945 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962014953]
[2020-11-09 14:52:56,945 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776952171]
[2020-11-09 14:52:56,945 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:57,033 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2020-11-09 14:52:57,033 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:57,034 INFO  L263         TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-11-09 14:52:57,035 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:57,065 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:52:57,081 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:57,081 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:57,081 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14
[2020-11-09 14:52:57,082 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1095252293]
[2020-11-09 14:52:57,082 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:57,084 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:57,089 INFO  L252    McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions.
[2020-11-09 14:52:57,089 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:57,117 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5976#(and (<= ~i~0 13) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:52:57,118 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-11-09 14:52:57,119 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:57,119 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-11-09 14:52:57,120 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272
[2020-11-09 14:52:57,120 INFO  L87              Difference]: Start difference. First operand 66 states and 165 transitions. Second operand 16 states.
[2020-11-09 14:52:57,838 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:57,838 INFO  L93              Difference]: Finished difference Result 102 states and 241 transitions.
[2020-11-09 14:52:57,839 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-11-09 14:52:57,839 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 19
[2020-11-09 14:52:57,839 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:57,840 INFO  L225             Difference]: With dead ends: 102
[2020-11-09 14:52:57,840 INFO  L226             Difference]: Without dead ends: 93
[2020-11-09 14:52:57,841 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=488, Invalid=1072, Unknown=0, NotChecked=0, Total=1560
[2020-11-09 14:52:57,842 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2020-11-09 14:52:57,843 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 53.
[2020-11-09 14:52:57,843 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2020-11-09 14:52:57,844 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 127 transitions.
[2020-11-09 14:52:57,844 INFO  L78                 Accepts]: Start accepts. Automaton has 53 states and 127 transitions. Word has length 19
[2020-11-09 14:52:57,844 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:57,844 INFO  L481      AbstractCegarLoop]: Abstraction has 53 states and 127 transitions.
[2020-11-09 14:52:57,844 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-11-09 14:52:57,844 INFO  L276                IsEmpty]: Start isEmpty. Operand 53 states and 127 transitions.
[2020-11-09 14:52:57,844 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-11-09 14:52:57,844 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:57,845 INFO  L422         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:58,045 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2020-11-09 14:52:58,045 INFO  L429      AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:58,046 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:58,046 INFO  L82        PathProgramCache]: Analyzing trace with hash -699703104, now seen corresponding path program 24 times
[2020-11-09 14:52:58,048 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:58,048 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674988298]
[2020-11-09 14:52:58,048 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:58,059 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:58,205 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:58,205 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674988298]
[2020-11-09 14:52:58,205 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434380247]
[2020-11-09 14:52:58,206 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:58,288 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2020-11-09 14:52:58,288 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:52:58,289 INFO  L263         TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-11-09 14:52:58,290 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:58,321 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:58,337 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:58,337 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:58,338 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14
[2020-11-09 14:52:58,338 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [28412977]
[2020-11-09 14:52:58,338 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:58,340 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:58,344 INFO  L252    McrAutomatonBuilder]: Finished intersection with 26 states and 31 transitions.
[2020-11-09 14:52:58,344 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:58,360 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:52:58,360 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-11-09 14:52:58,360 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:58,360 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-11-09 14:52:58,361 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240
[2020-11-09 14:52:58,361 INFO  L87              Difference]: Start difference. First operand 53 states and 127 transitions. Second operand 15 states.
[2020-11-09 14:52:59,043 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:52:59,044 INFO  L93              Difference]: Finished difference Result 88 states and 213 transitions.
[2020-11-09 14:52:59,044 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-11-09 14:52:59,044 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 19
[2020-11-09 14:52:59,045 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:52:59,046 INFO  L225             Difference]: With dead ends: 88
[2020-11-09 14:52:59,046 INFO  L226             Difference]: Without dead ends: 83
[2020-11-09 14:52:59,047 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=418, Invalid=914, Unknown=0, NotChecked=0, Total=1332
[2020-11-09 14:52:59,047 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2020-11-09 14:52:59,049 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67.
[2020-11-09 14:52:59,049 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 67 states.
[2020-11-09 14:52:59,050 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 169 transitions.
[2020-11-09 14:52:59,050 INFO  L78                 Accepts]: Start accepts. Automaton has 67 states and 169 transitions. Word has length 19
[2020-11-09 14:52:59,050 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:52:59,050 INFO  L481      AbstractCegarLoop]: Abstraction has 67 states and 169 transitions.
[2020-11-09 14:52:59,050 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-11-09 14:52:59,051 INFO  L276                IsEmpty]: Start isEmpty. Operand 67 states and 169 transitions.
[2020-11-09 14:52:59,051 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-11-09 14:52:59,051 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:52:59,051 INFO  L422         BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:52:59,260 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:59,261 INFO  L429      AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:52:59,261 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:52:59,261 INFO  L82        PathProgramCache]: Analyzing trace with hash -923845315, now seen corresponding path program 25 times
[2020-11-09 14:52:59,263 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:52:59,263 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235384548]
[2020-11-09 14:52:59,263 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:52:59,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:59,479 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:59,479 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235384548]
[2020-11-09 14:52:59,479 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125718716]
[2020-11-09 14:52:59,480 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:52:59,556 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:52:59,557 INFO  L263         TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-11-09 14:52:59,558 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:52:59,559 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:52:59,583 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:52:59,584 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:52:59,584 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14
[2020-11-09 14:52:59,584 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1274009418]
[2020-11-09 14:52:59,584 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:52:59,587 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:52:59,591 INFO  L252    McrAutomatonBuilder]: Finished intersection with 28 states and 35 transitions.
[2020-11-09 14:52:59,591 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:52:59,592 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:59,592 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:59,622 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:59,623 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:59,645 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:52:59,645 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:52:59,662 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6638#(and (< ~i~0 26) (<= ~j~0 6))]
[2020-11-09 14:52:59,663 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-11-09 14:52:59,663 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:52:59,663 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-11-09 14:52:59,664 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272
[2020-11-09 14:52:59,664 INFO  L87              Difference]: Start difference. First operand 67 states and 169 transitions. Second operand 17 states.
[2020-11-09 14:53:00,107 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:00,107 INFO  L93              Difference]: Finished difference Result 88 states and 211 transitions.
[2020-11-09 14:53:00,108 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-11-09 14:53:00,108 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 20
[2020-11-09 14:53:00,108 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:00,109 INFO  L225             Difference]: With dead ends: 88
[2020-11-09 14:53:00,109 INFO  L226             Difference]: Without dead ends: 82
[2020-11-09 14:53:00,110 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=640, Unknown=0, NotChecked=0, Total=930
[2020-11-09 14:53:00,110 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2020-11-09 14:53:00,113 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 71.
[2020-11-09 14:53:00,114 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2020-11-09 14:53:00,114 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 177 transitions.
[2020-11-09 14:53:00,114 INFO  L78                 Accepts]: Start accepts. Automaton has 71 states and 177 transitions. Word has length 20
[2020-11-09 14:53:00,114 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:00,115 INFO  L481      AbstractCegarLoop]: Abstraction has 71 states and 177 transitions.
[2020-11-09 14:53:00,115 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-11-09 14:53:00,115 INFO  L276                IsEmpty]: Start isEmpty. Operand 71 states and 177 transitions.
[2020-11-09 14:53:00,115 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-11-09 14:53:00,115 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:00,115 INFO  L422         BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:00,324 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2020-11-09 14:53:00,325 INFO  L429      AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:00,325 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:00,326 INFO  L82        PathProgramCache]: Analyzing trace with hash 1384142351, now seen corresponding path program 26 times
[2020-11-09 14:53:00,328 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:00,328 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218004464]
[2020-11-09 14:53:00,328 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:00,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:00,501 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:00,502 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218004464]
[2020-11-09 14:53:00,502 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16517063]
[2020-11-09 14:53:00,502 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:00,576 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-11-09 14:53:00,576 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:00,577 INFO  L263         TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core
[2020-11-09 14:53:00,579 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:00,608 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:53:00,628 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:00,628 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:00,628 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15
[2020-11-09 14:53:00,629 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1561734635]
[2020-11-09 14:53:00,629 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:00,631 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:00,635 INFO  L252    McrAutomatonBuilder]: Finished intersection with 25 states and 28 transitions.
[2020-11-09 14:53:00,635 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:00,642 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:53:00,643 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-11-09 14:53:00,643 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:00,643 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-11-09 14:53:00,643 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272
[2020-11-09 14:53:00,644 INFO  L87              Difference]: Start difference. First operand 71 states and 177 transitions. Second operand 16 states.
[2020-11-09 14:53:01,414 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:01,415 INFO  L93              Difference]: Finished difference Result 104 states and 247 transitions.
[2020-11-09 14:53:01,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2020-11-09 14:53:01,420 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 20
[2020-11-09 14:53:01,420 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:01,421 INFO  L225             Difference]: With dead ends: 104
[2020-11-09 14:53:01,421 INFO  L226             Difference]: Without dead ends: 99
[2020-11-09 14:53:01,422 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=549, Invalid=1173, Unknown=0, NotChecked=0, Total=1722
[2020-11-09 14:53:01,423 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2020-11-09 14:53:01,425 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 58.
[2020-11-09 14:53:01,425 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 58 states.
[2020-11-09 14:53:01,425 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions.
[2020-11-09 14:53:01,426 INFO  L78                 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 20
[2020-11-09 14:53:01,426 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:01,426 INFO  L481      AbstractCegarLoop]: Abstraction has 58 states and 139 transitions.
[2020-11-09 14:53:01,426 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-11-09 14:53:01,426 INFO  L276                IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions.
[2020-11-09 14:53:01,426 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-11-09 14:53:01,427 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:01,427 INFO  L422         BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:01,637 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:01,638 INFO  L429      AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:01,638 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:01,639 INFO  L82        PathProgramCache]: Analyzing trace with hash -215934529, now seen corresponding path program 27 times
[2020-11-09 14:53:01,641 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:01,641 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827776352]
[2020-11-09 14:53:01,641 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:01,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:01,802 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:01,802 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827776352]
[2020-11-09 14:53:01,802 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2728773]
[2020-11-09 14:53:01,803 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:01,875 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2020-11-09 14:53:01,876 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:01,877 INFO  L263         TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-11-09 14:53:01,878 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:01,927 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:01,927 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:01,927 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15
[2020-11-09 14:53:01,927 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [400503092]
[2020-11-09 14:53:01,928 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:01,930 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:01,934 INFO  L252    McrAutomatonBuilder]: Finished intersection with 28 states and 34 transitions.
[2020-11-09 14:53:01,935 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:01,971 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7315#(and (<= ~i~0 17) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:53:01,972 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-11-09 14:53:01,972 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:01,972 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-11-09 14:53:01,973 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306
[2020-11-09 14:53:01,973 INFO  L87              Difference]: Start difference. First operand 58 states and 139 transitions. Second operand 17 states.
[2020-11-09 14:53:02,785 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:02,786 INFO  L93              Difference]: Finished difference Result 112 states and 265 transitions.
[2020-11-09 14:53:02,786 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-11-09 14:53:02,787 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 20
[2020-11-09 14:53:02,787 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:02,788 INFO  L225             Difference]: With dead ends: 112
[2020-11-09 14:53:02,788 INFO  L226             Difference]: Without dead ends: 103
[2020-11-09 14:53:02,789 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=502, Invalid=1138, Unknown=0, NotChecked=0, Total=1640
[2020-11-09 14:53:02,790 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2020-11-09 14:53:02,792 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72.
[2020-11-09 14:53:02,792 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 72 states.
[2020-11-09 14:53:02,792 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 181 transitions.
[2020-11-09 14:53:02,793 INFO  L78                 Accepts]: Start accepts. Automaton has 72 states and 181 transitions. Word has length 20
[2020-11-09 14:53:02,793 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:02,793 INFO  L481      AbstractCegarLoop]: Abstraction has 72 states and 181 transitions.
[2020-11-09 14:53:02,793 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-11-09 14:53:02,793 INFO  L276                IsEmpty]: Start isEmpty. Operand 72 states and 181 transitions.
[2020-11-09 14:53:02,793 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-11-09 14:53:02,793 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:02,793 INFO  L422         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:03,002 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2020-11-09 14:53:03,003 INFO  L429      AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:03,003 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:03,004 INFO  L82        PathProgramCache]: Analyzing trace with hash -41234864, now seen corresponding path program 28 times
[2020-11-09 14:53:03,006 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:03,006 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140555802]
[2020-11-09 14:53:03,006 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:03,021 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:03,184 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:03,184 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140555802]
[2020-11-09 14:53:03,185 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309771188]
[2020-11-09 14:53:03,185 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:03,260 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-11-09 14:53:03,261 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:03,261 INFO  L263         TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-11-09 14:53:03,262 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:03,298 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:53:03,314 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:03,315 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:03,315 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16
[2020-11-09 14:53:03,315 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1932037961]
[2020-11-09 14:53:03,316 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:03,318 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:03,322 INFO  L252    McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions.
[2020-11-09 14:53:03,322 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:03,360 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [7696#(and (= ULTIMATE.start_main_~condI~0 0) (<= ~i~0 15))]
[2020-11-09 14:53:03,360 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-11-09 14:53:03,360 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:03,361 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-11-09 14:53:03,361 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342
[2020-11-09 14:53:03,361 INFO  L87              Difference]: Start difference. First operand 72 states and 181 transitions. Second operand 18 states.
[2020-11-09 14:53:04,296 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:04,296 INFO  L93              Difference]: Finished difference Result 112 states and 265 transitions.
[2020-11-09 14:53:04,298 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2020-11-09 14:53:04,298 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states. Word has length 21
[2020-11-09 14:53:04,298 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:04,300 INFO  L225             Difference]: With dead ends: 112
[2020-11-09 14:53:04,300 INFO  L226             Difference]: Without dead ends: 103
[2020-11-09 14:53:04,301 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=646, Invalid=1424, Unknown=0, NotChecked=0, Total=2070
[2020-11-09 14:53:04,302 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2020-11-09 14:53:04,304 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 57.
[2020-11-09 14:53:04,305 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 57 states.
[2020-11-09 14:53:04,305 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 137 transitions.
[2020-11-09 14:53:04,305 INFO  L78                 Accepts]: Start accepts. Automaton has 57 states and 137 transitions. Word has length 21
[2020-11-09 14:53:04,305 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:04,306 INFO  L481      AbstractCegarLoop]: Abstraction has 57 states and 137 transitions.
[2020-11-09 14:53:04,306 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-11-09 14:53:04,306 INFO  L276                IsEmpty]: Start isEmpty. Operand 57 states and 137 transitions.
[2020-11-09 14:53:04,306 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-11-09 14:53:04,306 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:04,306 INFO  L422         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:04,517 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:04,518 INFO  L429      AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:04,518 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:04,518 INFO  L82        PathProgramCache]: Analyzing trace with hash 1895992291, now seen corresponding path program 29 times
[2020-11-09 14:53:04,520 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:04,520 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168454696]
[2020-11-09 14:53:04,520 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:04,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:04,708 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:04,708 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168454696]
[2020-11-09 14:53:04,708 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541469874]
[2020-11-09 14:53:04,708 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:04,788 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2020-11-09 14:53:04,789 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:04,790 INFO  L263         TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-11-09 14:53:04,791 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:04,833 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:53:04,850 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:04,851 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:04,851 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16
[2020-11-09 14:53:04,851 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [162840606]
[2020-11-09 14:53:04,851 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:04,854 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:04,859 INFO  L252    McrAutomatonBuilder]: Finished intersection with 28 states and 33 transitions.
[2020-11-09 14:53:04,859 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:04,880 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:53:04,880 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-11-09 14:53:04,881 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:04,881 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-11-09 14:53:04,881 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306
[2020-11-09 14:53:04,881 INFO  L87              Difference]: Start difference. First operand 57 states and 137 transitions. Second operand 17 states.
[2020-11-09 14:53:05,746 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:05,746 INFO  L93              Difference]: Finished difference Result 96 states and 233 transitions.
[2020-11-09 14:53:05,746 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2020-11-09 14:53:05,747 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 21
[2020-11-09 14:53:05,747 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:05,748 INFO  L225             Difference]: With dead ends: 96
[2020-11-09 14:53:05,748 INFO  L226             Difference]: Without dead ends: 91
[2020-11-09 14:53:05,749 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=564, Invalid=1242, Unknown=0, NotChecked=0, Total=1806
[2020-11-09 14:53:05,750 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2020-11-09 14:53:05,751 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 73.
[2020-11-09 14:53:05,751 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 73 states.
[2020-11-09 14:53:05,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 185 transitions.
[2020-11-09 14:53:05,752 INFO  L78                 Accepts]: Start accepts. Automaton has 73 states and 185 transitions. Word has length 21
[2020-11-09 14:53:05,752 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:05,752 INFO  L481      AbstractCegarLoop]: Abstraction has 73 states and 185 transitions.
[2020-11-09 14:53:05,752 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-11-09 14:53:05,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 73 states and 185 transitions.
[2020-11-09 14:53:05,753 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-11-09 14:53:05,753 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:05,753 INFO  L422         BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:05,961 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30
[2020-11-09 14:53:05,962 INFO  L429      AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:05,962 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:05,962 INFO  L82        PathProgramCache]: Analyzing trace with hash 1242888800, now seen corresponding path program 30 times
[2020-11-09 14:53:05,965 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:05,965 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898810947]
[2020-11-09 14:53:05,965 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:05,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:06,219 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:06,219 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898810947]
[2020-11-09 14:53:06,220 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706722135]
[2020-11-09 14:53:06,220 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:06,304 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2020-11-09 14:53:06,304 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:06,306 INFO  L263         TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-11-09 14:53:06,307 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:06,309 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:53:06,321 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:06,321 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:06,321 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16
[2020-11-09 14:53:06,321 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [40299147]
[2020-11-09 14:53:06,322 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:06,324 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:06,329 INFO  L252    McrAutomatonBuilder]: Finished intersection with 30 states and 37 transitions.
[2020-11-09 14:53:06,330 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:06,331 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:53:06,331 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:53:06,370 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:53:06,370 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:53:06,395 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:53:06,396 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:53:06,413 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [8428#(and (< ~i~0 26) (<= ~j~0 6))]
[2020-11-09 14:53:06,414 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-11-09 14:53:06,414 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:06,414 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-11-09 14:53:06,414 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342
[2020-11-09 14:53:06,415 INFO  L87              Difference]: Start difference. First operand 73 states and 185 transitions. Second operand 19 states.
[2020-11-09 14:53:06,950 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:06,951 INFO  L93              Difference]: Finished difference Result 96 states and 231 transitions.
[2020-11-09 14:53:06,951 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-11-09 14:53:06,951 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states. Word has length 22
[2020-11-09 14:53:06,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:06,953 INFO  L225             Difference]: With dead ends: 96
[2020-11-09 14:53:06,953 INFO  L226             Difference]: Without dead ends: 90
[2020-11-09 14:53:06,954 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=370, Invalid=820, Unknown=0, NotChecked=0, Total=1190
[2020-11-09 14:53:06,954 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-11-09 14:53:06,956 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77.
[2020-11-09 14:53:06,957 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 77 states.
[2020-11-09 14:53:06,957 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 193 transitions.
[2020-11-09 14:53:06,957 INFO  L78                 Accepts]: Start accepts. Automaton has 77 states and 193 transitions. Word has length 22
[2020-11-09 14:53:06,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:06,958 INFO  L481      AbstractCegarLoop]: Abstraction has 77 states and 193 transitions.
[2020-11-09 14:53:06,958 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-11-09 14:53:06,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 77 states and 193 transitions.
[2020-11-09 14:53:06,958 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-11-09 14:53:06,958 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:06,958 INFO  L422         BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:07,169 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:07,170 INFO  L429      AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:07,170 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:07,170 INFO  L82        PathProgramCache]: Analyzing trace with hash -1278252686, now seen corresponding path program 31 times
[2020-11-09 14:53:07,172 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:07,172 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591044919]
[2020-11-09 14:53:07,173 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:07,183 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:07,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:07,359 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591044919]
[2020-11-09 14:53:07,359 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057711614]
[2020-11-09 14:53:07,360 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:07,451 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:07,453 INFO  L263         TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core
[2020-11-09 14:53:07,454 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:07,506 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:53:07,535 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:07,536 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:07,536 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17
[2020-11-09 14:53:07,536 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [940538487]
[2020-11-09 14:53:07,537 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:07,540 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:07,560 INFO  L252    McrAutomatonBuilder]: Finished intersection with 27 states and 30 transitions.
[2020-11-09 14:53:07,561 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:07,572 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:53:07,573 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-11-09 14:53:07,573 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:07,573 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-11-09 14:53:07,574 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342
[2020-11-09 14:53:07,574 INFO  L87              Difference]: Start difference. First operand 77 states and 193 transitions. Second operand 18 states.
[2020-11-09 14:53:08,548 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:08,548 INFO  L93              Difference]: Finished difference Result 114 states and 271 transitions.
[2020-11-09 14:53:08,549 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2020-11-09 14:53:08,549 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states. Word has length 22
[2020-11-09 14:53:08,549 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:08,550 INFO  L225             Difference]: With dead ends: 114
[2020-11-09 14:53:08,550 INFO  L226             Difference]: Without dead ends: 109
[2020-11-09 14:53:08,552 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=716, Invalid=1540, Unknown=0, NotChecked=0, Total=2256
[2020-11-09 14:53:08,552 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2020-11-09 14:53:08,554 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 62.
[2020-11-09 14:53:08,554 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2020-11-09 14:53:08,555 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 149 transitions.
[2020-11-09 14:53:08,555 INFO  L78                 Accepts]: Start accepts. Automaton has 62 states and 149 transitions. Word has length 22
[2020-11-09 14:53:08,555 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:08,555 INFO  L481      AbstractCegarLoop]: Abstraction has 62 states and 149 transitions.
[2020-11-09 14:53:08,555 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-11-09 14:53:08,556 INFO  L276                IsEmpty]: Start isEmpty. Operand 62 states and 149 transitions.
[2020-11-09 14:53:08,556 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-11-09 14:53:08,556 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:08,556 INFO  L422         BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:08,767 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32
[2020-11-09 14:53:08,768 INFO  L429      AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:08,768 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:08,768 INFO  L82        PathProgramCache]: Analyzing trace with hash -1353755908, now seen corresponding path program 32 times
[2020-11-09 14:53:08,770 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:08,770 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565961459]
[2020-11-09 14:53:08,770 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:08,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:08,969 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:08,970 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565961459]
[2020-11-09 14:53:08,970 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194951666]
[2020-11-09 14:53:08,970 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:09,037 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-11-09 14:53:09,038 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:09,039 INFO  L263         TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-11-09 14:53:09,040 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:09,087 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:09,088 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:09,088 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17
[2020-11-09 14:53:09,088 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1701301730]
[2020-11-09 14:53:09,088 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:09,093 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:09,098 INFO  L252    McrAutomatonBuilder]: Finished intersection with 30 states and 36 transitions.
[2020-11-09 14:53:09,099 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:09,136 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9171#(and (<= ~i~0 19) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:53:09,136 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-11-09 14:53:09,136 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:09,137 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-11-09 14:53:09,137 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380
[2020-11-09 14:53:09,137 INFO  L87              Difference]: Start difference. First operand 62 states and 149 transitions. Second operand 19 states.
[2020-11-09 14:53:10,122 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:10,122 INFO  L93              Difference]: Finished difference Result 122 states and 289 transitions.
[2020-11-09 14:53:10,123 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2020-11-09 14:53:10,123 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states. Word has length 22
[2020-11-09 14:53:10,123 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:10,124 INFO  L225             Difference]: With dead ends: 122
[2020-11-09 14:53:10,124 INFO  L226             Difference]: Without dead ends: 113
[2020-11-09 14:53:10,126 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=661, Invalid=1501, Unknown=0, NotChecked=0, Total=2162
[2020-11-09 14:53:10,126 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2020-11-09 14:53:10,129 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 78.
[2020-11-09 14:53:10,129 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 78 states.
[2020-11-09 14:53:10,130 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 197 transitions.
[2020-11-09 14:53:10,130 INFO  L78                 Accepts]: Start accepts. Automaton has 78 states and 197 transitions. Word has length 22
[2020-11-09 14:53:10,130 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:10,130 INFO  L481      AbstractCegarLoop]: Abstraction has 78 states and 197 transitions.
[2020-11-09 14:53:10,130 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-11-09 14:53:10,130 INFO  L276                IsEmpty]: Start isEmpty. Operand 78 states and 197 transitions.
[2020-11-09 14:53:10,131 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-11-09 14:53:10,131 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:10,131 INFO  L422         BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:10,340 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:10,341 INFO  L429      AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:10,341 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:10,341 INFO  L82        PathProgramCache]: Analyzing trace with hash -971102387, now seen corresponding path program 33 times
[2020-11-09 14:53:10,343 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:10,343 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075251875]
[2020-11-09 14:53:10,343 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:10,362 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:10,599 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:10,599 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075251875]
[2020-11-09 14:53:10,599 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48024287]
[2020-11-09 14:53:10,599 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:10,679 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2020-11-09 14:53:10,679 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:10,681 INFO  L263         TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-11-09 14:53:10,682 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:10,712 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:53:10,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:10,730 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:10,730 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2020-11-09 14:53:10,730 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [985512638]
[2020-11-09 14:53:10,730 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:10,733 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:10,739 INFO  L252    McrAutomatonBuilder]: Finished intersection with 29 states and 33 transitions.
[2020-11-09 14:53:10,739 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:10,784 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [9590#(and (<= ~i~0 17) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:53:10,784 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-11-09 14:53:10,784 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:10,784 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-11-09 14:53:10,785 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420
[2020-11-09 14:53:10,785 INFO  L87              Difference]: Start difference. First operand 78 states and 197 transitions. Second operand 20 states.
[2020-11-09 14:53:11,860 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:11,860 INFO  L93              Difference]: Finished difference Result 122 states and 289 transitions.
[2020-11-09 14:53:11,861 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. 
[2020-11-09 14:53:11,861 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states. Word has length 23
[2020-11-09 14:53:11,861 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:11,862 INFO  L225             Difference]: With dead ends: 122
[2020-11-09 14:53:11,862 INFO  L226             Difference]: Without dead ends: 113
[2020-11-09 14:53:11,863 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=826, Invalid=1826, Unknown=0, NotChecked=0, Total=2652
[2020-11-09 14:53:11,863 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2020-11-09 14:53:11,866 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 61.
[2020-11-09 14:53:11,867 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2020-11-09 14:53:11,867 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 147 transitions.
[2020-11-09 14:53:11,867 INFO  L78                 Accepts]: Start accepts. Automaton has 61 states and 147 transitions. Word has length 23
[2020-11-09 14:53:11,867 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:11,868 INFO  L481      AbstractCegarLoop]: Abstraction has 61 states and 147 transitions.
[2020-11-09 14:53:11,868 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-11-09 14:53:11,868 INFO  L276                IsEmpty]: Start isEmpty. Operand 61 states and 147 transitions.
[2020-11-09 14:53:11,868 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-11-09 14:53:11,868 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:11,868 INFO  L422         BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:12,077 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2020-11-09 14:53:12,077 INFO  L429      AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:12,078 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:12,078 INFO  L82        PathProgramCache]: Analyzing trace with hash 983267910, now seen corresponding path program 34 times
[2020-11-09 14:53:12,079 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:12,080 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226050455]
[2020-11-09 14:53:12,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:12,098 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:12,313 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:12,314 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226050455]
[2020-11-09 14:53:12,314 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756821583]
[2020-11-09 14:53:12,315 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:12,390 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-11-09 14:53:12,390 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:12,391 INFO  L263         TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-11-09 14:53:12,392 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:12,425 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:53:12,447 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:12,447 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:12,448 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18
[2020-11-09 14:53:12,448 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [853661110]
[2020-11-09 14:53:12,448 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:12,451 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:12,455 INFO  L252    McrAutomatonBuilder]: Finished intersection with 30 states and 35 transitions.
[2020-11-09 14:53:12,455 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:12,475 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:53:12,476 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-11-09 14:53:12,476 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:12,476 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-11-09 14:53:12,476 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380
[2020-11-09 14:53:12,476 INFO  L87              Difference]: Start difference. First operand 61 states and 147 transitions. Second operand 19 states.
[2020-11-09 14:53:13,507 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:13,507 INFO  L93              Difference]: Finished difference Result 104 states and 253 transitions.
[2020-11-09 14:53:13,508 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2020-11-09 14:53:13,508 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states. Word has length 23
[2020-11-09 14:53:13,508 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:13,509 INFO  L225             Difference]: With dead ends: 104
[2020-11-09 14:53:13,510 INFO  L226             Difference]: Without dead ends: 99
[2020-11-09 14:53:13,511 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=732, Invalid=1620, Unknown=0, NotChecked=0, Total=2352
[2020-11-09 14:53:13,512 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2020-11-09 14:53:13,514 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 79.
[2020-11-09 14:53:13,514 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 79 states.
[2020-11-09 14:53:13,515 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 201 transitions.
[2020-11-09 14:53:13,515 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 201 transitions. Word has length 23
[2020-11-09 14:53:13,515 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:13,515 INFO  L481      AbstractCegarLoop]: Abstraction has 79 states and 201 transitions.
[2020-11-09 14:53:13,515 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-11-09 14:53:13,515 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 201 transitions.
[2020-11-09 14:53:13,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-11-09 14:53:13,516 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:13,516 INFO  L422         BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:13,723 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2020-11-09 14:53:13,724 INFO  L429      AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:13,724 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:13,725 INFO  L82        PathProgramCache]: Analyzing trace with hash 415234755, now seen corresponding path program 35 times
[2020-11-09 14:53:13,727 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:13,727 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805186701]
[2020-11-09 14:53:13,727 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:13,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:14,059 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:14,060 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805186701]
[2020-11-09 14:53:14,061 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909239167]
[2020-11-09 14:53:14,061 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:14,143 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2020-11-09 14:53:14,143 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:14,144 INFO  L263         TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-11-09 14:53:14,145 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:14,147 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:53:14,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:14,165 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:14,165 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18
[2020-11-09 14:53:14,165 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1480472579]
[2020-11-09 14:53:14,165 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:14,168 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:14,174 INFO  L252    McrAutomatonBuilder]: Finished intersection with 32 states and 39 transitions.
[2020-11-09 14:53:14,175 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:14,176 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:53:14,176 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:53:14,218 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:53:14,219 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:53:14,241 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:53:14,241 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:53:14,259 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [10392#(and (< ~i~0 26) (<= ~j~0 6))]
[2020-11-09 14:53:14,259 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-11-09 14:53:14,259 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:14,260 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-11-09 14:53:14,260 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420
[2020-11-09 14:53:14,260 INFO  L87              Difference]: Start difference. First operand 79 states and 201 transitions. Second operand 21 states.
[2020-11-09 14:53:14,879 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:14,879 INFO  L93              Difference]: Finished difference Result 104 states and 251 transitions.
[2020-11-09 14:53:14,880 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2020-11-09 14:53:14,880 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states. Word has length 24
[2020-11-09 14:53:14,880 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:14,881 INFO  L225             Difference]: With dead ends: 104
[2020-11-09 14:53:14,881 INFO  L226             Difference]: Without dead ends: 98
[2020-11-09 14:53:14,882 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=460, Invalid=1022, Unknown=0, NotChecked=0, Total=1482
[2020-11-09 14:53:14,883 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2020-11-09 14:53:14,885 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83.
[2020-11-09 14:53:14,885 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 83 states.
[2020-11-09 14:53:14,885 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 209 transitions.
[2020-11-09 14:53:14,885 INFO  L78                 Accepts]: Start accepts. Automaton has 83 states and 209 transitions. Word has length 24
[2020-11-09 14:53:14,886 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:14,886 INFO  L481      AbstractCegarLoop]: Abstraction has 83 states and 209 transitions.
[2020-11-09 14:53:14,886 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-11-09 14:53:14,886 INFO  L276                IsEmpty]: Start isEmpty. Operand 83 states and 209 transitions.
[2020-11-09 14:53:14,886 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-11-09 14:53:14,886 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:14,887 INFO  L422         BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:15,096 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36
[2020-11-09 14:53:15,097 INFO  L429      AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:15,097 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:15,097 INFO  L82        PathProgramCache]: Analyzing trace with hash -39374827, now seen corresponding path program 36 times
[2020-11-09 14:53:15,099 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:15,099 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364329386]
[2020-11-09 14:53:15,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:15,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:15,365 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:15,365 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364329386]
[2020-11-09 14:53:15,366 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150331767]
[2020-11-09 14:53:15,366 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:15,448 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2020-11-09 14:53:15,448 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:15,450 INFO  L263         TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-11-09 14:53:15,451 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:15,479 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:53:15,497 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:15,498 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:15,498 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2020-11-09 14:53:15,498 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1312711229]
[2020-11-09 14:53:15,498 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:15,501 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:15,507 INFO  L252    McrAutomatonBuilder]: Finished intersection with 29 states and 32 transitions.
[2020-11-09 14:53:15,507 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:15,513 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:53:15,513 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-11-09 14:53:15,513 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:15,514 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-11-09 14:53:15,514 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420
[2020-11-09 14:53:15,514 INFO  L87              Difference]: Start difference. First operand 83 states and 209 transitions. Second operand 20 states.
[2020-11-09 14:53:16,605 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:16,605 INFO  L93              Difference]: Finished difference Result 124 states and 295 transitions.
[2020-11-09 14:53:16,606 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. 
[2020-11-09 14:53:16,606 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states. Word has length 24
[2020-11-09 14:53:16,606 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:16,607 INFO  L225             Difference]: With dead ends: 124
[2020-11-09 14:53:16,608 INFO  L226             Difference]: Without dead ends: 119
[2020-11-09 14:53:16,609 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=905, Invalid=1957, Unknown=0, NotChecked=0, Total=2862
[2020-11-09 14:53:16,610 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 119 states.
[2020-11-09 14:53:16,612 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 66.
[2020-11-09 14:53:16,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 66 states.
[2020-11-09 14:53:16,612 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 159 transitions.
[2020-11-09 14:53:16,613 INFO  L78                 Accepts]: Start accepts. Automaton has 66 states and 159 transitions. Word has length 24
[2020-11-09 14:53:16,613 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:16,613 INFO  L481      AbstractCegarLoop]: Abstraction has 66 states and 159 transitions.
[2020-11-09 14:53:16,613 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-11-09 14:53:16,613 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states and 159 transitions.
[2020-11-09 14:53:16,613 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-11-09 14:53:16,613 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:16,613 INFO  L422         BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:16,817 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37
[2020-11-09 14:53:16,818 INFO  L429      AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:16,818 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:16,818 INFO  L82        PathProgramCache]: Analyzing trace with hash 416559353, now seen corresponding path program 37 times
[2020-11-09 14:53:16,820 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:16,820 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249763165]
[2020-11-09 14:53:16,820 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:16,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:17,059 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:17,059 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249763165]
[2020-11-09 14:53:17,059 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400986921]
[2020-11-09 14:53:17,060 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:17,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:17,131 INFO  L263         TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjunts are in the unsatisfiable core
[2020-11-09 14:53:17,131 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:17,172 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:53:17,191 INFO  L134       CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:17,192 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:17,192 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19
[2020-11-09 14:53:17,192 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1065488075]
[2020-11-09 14:53:17,192 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:17,196 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:17,201 INFO  L252    McrAutomatonBuilder]: Finished intersection with 32 states and 38 transitions.
[2020-11-09 14:53:17,202 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:17,242 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11201#(and (<= ~i~0 21) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:53:17,242 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-11-09 14:53:17,242 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:17,243 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-11-09 14:53:17,243 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462
[2020-11-09 14:53:17,243 INFO  L87              Difference]: Start difference. First operand 66 states and 159 transitions. Second operand 21 states.
[2020-11-09 14:53:18,425 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:18,426 INFO  L93              Difference]: Finished difference Result 132 states and 313 transitions.
[2020-11-09 14:53:18,426 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. 
[2020-11-09 14:53:18,426 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states. Word has length 24
[2020-11-09 14:53:18,427 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:18,428 INFO  L225             Difference]: With dead ends: 132
[2020-11-09 14:53:18,428 INFO  L226             Difference]: Without dead ends: 123
[2020-11-09 14:53:18,430 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=842, Invalid=1914, Unknown=0, NotChecked=0, Total=2756
[2020-11-09 14:53:18,430 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2020-11-09 14:53:18,432 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 84.
[2020-11-09 14:53:18,432 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 84 states.
[2020-11-09 14:53:18,433 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 213 transitions.
[2020-11-09 14:53:18,433 INFO  L78                 Accepts]: Start accepts. Automaton has 84 states and 213 transitions. Word has length 24
[2020-11-09 14:53:18,433 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:18,433 INFO  L481      AbstractCegarLoop]: Abstraction has 84 states and 213 transitions.
[2020-11-09 14:53:18,433 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-11-09 14:53:18,433 INFO  L276                IsEmpty]: Start isEmpty. Operand 84 states and 213 transitions.
[2020-11-09 14:53:18,434 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-11-09 14:53:18,434 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:18,434 INFO  L422         BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:18,645 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38
[2020-11-09 14:53:18,646 INFO  L429      AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:18,646 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:18,646 INFO  L82        PathProgramCache]: Analyzing trace with hash -1220594422, now seen corresponding path program 38 times
[2020-11-09 14:53:18,648 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:18,648 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440509381]
[2020-11-09 14:53:18,648 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:18,658 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:18,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:18,867 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440509381]
[2020-11-09 14:53:18,867 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155045214]
[2020-11-09 14:53:18,867 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:18,943 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-11-09 14:53:18,943 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:18,945 INFO  L263         TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-11-09 14:53:18,946 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:18,977 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:53:18,995 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:18,996 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:18,996 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-11-09 14:53:18,996 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1037794004]
[2020-11-09 14:53:18,996 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:18,999 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:19,006 INFO  L252    McrAutomatonBuilder]: Finished intersection with 31 states and 35 transitions.
[2020-11-09 14:53:19,006 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:19,034 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [11658#(and (<= ~i~0 19) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:53:19,035 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-11-09 14:53:19,035 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:19,036 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-11-09 14:53:19,036 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506
[2020-11-09 14:53:19,036 INFO  L87              Difference]: Start difference. First operand 84 states and 213 transitions. Second operand 22 states.
[2020-11-09 14:53:20,330 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:20,330 INFO  L93              Difference]: Finished difference Result 132 states and 313 transitions.
[2020-11-09 14:53:20,331 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. 
[2020-11-09 14:53:20,331 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states. Word has length 25
[2020-11-09 14:53:20,331 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:20,333 INFO  L225             Difference]: With dead ends: 132
[2020-11-09 14:53:20,333 INFO  L226             Difference]: Without dead ends: 123
[2020-11-09 14:53:20,334 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1028, Invalid=2278, Unknown=0, NotChecked=0, Total=3306
[2020-11-09 14:53:20,335 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2020-11-09 14:53:20,336 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 65.
[2020-11-09 14:53:20,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2020-11-09 14:53:20,337 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 157 transitions.
[2020-11-09 14:53:20,337 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 157 transitions. Word has length 25
[2020-11-09 14:53:20,337 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:20,337 INFO  L481      AbstractCegarLoop]: Abstraction has 65 states and 157 transitions.
[2020-11-09 14:53:20,337 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-11-09 14:53:20,337 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 157 transitions.
[2020-11-09 14:53:20,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-11-09 14:53:20,338 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:20,338 INFO  L422         BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:20,539 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39
[2020-11-09 14:53:20,539 INFO  L429      AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:20,540 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:20,540 INFO  L82        PathProgramCache]: Analyzing trace with hash 28466153, now seen corresponding path program 39 times
[2020-11-09 14:53:20,542 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:20,542 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351281810]
[2020-11-09 14:53:20,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:20,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:20,794 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:20,794 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351281810]
[2020-11-09 14:53:20,795 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921045215]
[2020-11-09 14:53:20,795 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:20,878 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2020-11-09 14:53:20,878 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:20,879 INFO  L263         TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-11-09 14:53:20,880 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:20,920 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:53:20,943 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:20,944 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:20,944 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20
[2020-11-09 14:53:20,944 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1982459735]
[2020-11-09 14:53:20,944 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:20,948 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:20,955 INFO  L252    McrAutomatonBuilder]: Finished intersection with 32 states and 37 transitions.
[2020-11-09 14:53:20,955 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:20,981 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:53:20,981 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-11-09 14:53:20,981 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:20,982 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-11-09 14:53:20,982 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462
[2020-11-09 14:53:20,982 INFO  L87              Difference]: Start difference. First operand 65 states and 157 transitions. Second operand 21 states.
[2020-11-09 14:53:22,167 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:22,168 INFO  L93              Difference]: Finished difference Result 112 states and 273 transitions.
[2020-11-09 14:53:22,168 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. 
[2020-11-09 14:53:22,169 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states. Word has length 25
[2020-11-09 14:53:22,169 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:22,170 INFO  L225             Difference]: With dead ends: 112
[2020-11-09 14:53:22,170 INFO  L226             Difference]: Without dead ends: 107
[2020-11-09 14:53:22,172 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=922, Invalid=2048, Unknown=0, NotChecked=0, Total=2970
[2020-11-09 14:53:22,172 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2020-11-09 14:53:22,174 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 85.
[2020-11-09 14:53:22,174 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-11-09 14:53:22,175 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 217 transitions.
[2020-11-09 14:53:22,175 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 217 transitions. Word has length 25
[2020-11-09 14:53:22,175 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:22,175 INFO  L481      AbstractCegarLoop]: Abstraction has 85 states and 217 transitions.
[2020-11-09 14:53:22,175 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-11-09 14:53:22,175 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 217 transitions.
[2020-11-09 14:53:22,176 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-11-09 14:53:22,176 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:22,176 INFO  L422         BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:22,376 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40
[2020-11-09 14:53:22,377 INFO  L429      AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:22,377 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:22,378 INFO  L82        PathProgramCache]: Analyzing trace with hash -391352730, now seen corresponding path program 40 times
[2020-11-09 14:53:22,379 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:22,380 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786724513]
[2020-11-09 14:53:22,380 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:22,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:22,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:22,738 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786724513]
[2020-11-09 14:53:22,739 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533480696]
[2020-11-09 14:53:22,739 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:22,818 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2020-11-09 14:53:22,818 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:22,820 INFO  L263         TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-11-09 14:53:22,821 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:22,824 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:53:22,841 INFO  L134       CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:22,841 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:22,842 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20
[2020-11-09 14:53:22,842 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1367677494]
[2020-11-09 14:53:22,842 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:22,845 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:22,854 INFO  L252    McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions.
[2020-11-09 14:53:22,854 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:22,865 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:53:22,865 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:53:22,899 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:53:22,899 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:53:22,941 INFO  L375       QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term
[2020-11-09 14:53:22,941 INFO  L603       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-11-09 14:53:22,967 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [12530#(and (< ~i~0 26) (<= ~j~0 6))]
[2020-11-09 14:53:22,967 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-11-09 14:53:22,967 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:22,968 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-11-09 14:53:22,968 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506
[2020-11-09 14:53:22,968 INFO  L87              Difference]: Start difference. First operand 85 states and 217 transitions. Second operand 23 states.
[2020-11-09 14:53:23,631 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:23,632 INFO  L93              Difference]: Finished difference Result 112 states and 271 transitions.
[2020-11-09 14:53:23,632 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-11-09 14:53:23,632 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-11-09 14:53:23,633 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:23,634 INFO  L225             Difference]: With dead ends: 112
[2020-11-09 14:53:23,634 INFO  L226             Difference]: Without dead ends: 106
[2020-11-09 14:53:23,635 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=560, Invalid=1246, Unknown=0, NotChecked=0, Total=1806
[2020-11-09 14:53:23,636 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2020-11-09 14:53:23,638 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 89.
[2020-11-09 14:53:23,639 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 89 states.
[2020-11-09 14:53:23,639 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 225 transitions.
[2020-11-09 14:53:23,639 INFO  L78                 Accepts]: Start accepts. Automaton has 89 states and 225 transitions. Word has length 26
[2020-11-09 14:53:23,639 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:23,639 INFO  L481      AbstractCegarLoop]: Abstraction has 89 states and 225 transitions.
[2020-11-09 14:53:23,640 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-11-09 14:53:23,640 INFO  L276                IsEmpty]: Start isEmpty. Operand 89 states and 225 transitions.
[2020-11-09 14:53:23,640 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-11-09 14:53:23,640 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:23,640 INFO  L422         BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:23,850 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:23,851 INFO  L429      AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:23,851 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:23,851 INFO  L82        PathProgramCache]: Analyzing trace with hash 816306680, now seen corresponding path program 41 times
[2020-11-09 14:53:23,853 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:23,853 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868731553]
[2020-11-09 14:53:23,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:23,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:24,117 INFO  L134       CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:24,118 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868731553]
[2020-11-09 14:53:24,118 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018610998]
[2020-11-09 14:53:24,118 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:24,202 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2020-11-09 14:53:24,202 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:24,204 INFO  L263         TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 22 conjunts are in the unsatisfiable core
[2020-11-09 14:53:24,205 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:24,252 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:53:24,275 INFO  L134       CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:24,275 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:24,275 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-11-09 14:53:24,276 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [102450422]
[2020-11-09 14:53:24,276 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:24,280 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:24,287 INFO  L252    McrAutomatonBuilder]: Finished intersection with 31 states and 34 transitions.
[2020-11-09 14:53:24,287 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:24,293 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:53:24,294 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-11-09 14:53:24,294 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:24,294 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-11-09 14:53:24,295 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506
[2020-11-09 14:53:24,295 INFO  L87              Difference]: Start difference. First operand 89 states and 225 transitions. Second operand 22 states.
[2020-11-09 14:53:25,593 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:25,593 INFO  L93              Difference]: Finished difference Result 134 states and 319 transitions.
[2020-11-09 14:53:25,593 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. 
[2020-11-09 14:53:25,594 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states. Word has length 26
[2020-11-09 14:53:25,594 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:25,595 INFO  L225             Difference]: With dead ends: 134
[2020-11-09 14:53:25,595 INFO  L226             Difference]: Without dead ends: 129
[2020-11-09 14:53:25,597 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1116, Invalid=2424, Unknown=0, NotChecked=0, Total=3540
[2020-11-09 14:53:25,598 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2020-11-09 14:53:25,600 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 70.
[2020-11-09 14:53:25,600 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2020-11-09 14:53:25,601 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 169 transitions.
[2020-11-09 14:53:25,601 INFO  L78                 Accepts]: Start accepts. Automaton has 70 states and 169 transitions. Word has length 26
[2020-11-09 14:53:25,601 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:25,601 INFO  L481      AbstractCegarLoop]: Abstraction has 70 states and 169 transitions.
[2020-11-09 14:53:25,601 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-11-09 14:53:25,601 INFO  L276                IsEmpty]: Start isEmpty. Operand 70 states and 169 transitions.
[2020-11-09 14:53:25,602 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-11-09 14:53:25,602 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:25,602 INFO  L422         BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:25,808 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:25,809 INFO  L429      AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:25,809 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:25,809 INFO  L82        PathProgramCache]: Analyzing trace with hash 882475958, now seen corresponding path program 42 times
[2020-11-09 14:53:25,811 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:25,811 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906001056]
[2020-11-09 14:53:25,812 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:25,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:26,102 INFO  L134       CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:26,102 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906001056]
[2020-11-09 14:53:26,103 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784868449]
[2020-11-09 14:53:26,103 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:26,189 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2020-11-09 14:53:26,190 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:26,191 INFO  L263         TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-11-09 14:53:26,193 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:26,257 INFO  L134       CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:26,257 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:26,257 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21
[2020-11-09 14:53:26,257 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [311980452]
[2020-11-09 14:53:26,258 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:26,270 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:26,277 INFO  L252    McrAutomatonBuilder]: Finished intersection with 34 states and 40 transitions.
[2020-11-09 14:53:26,278 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:26,320 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [13405#(and (<= ~i~0 23) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:53:26,320 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-11-09 14:53:26,320 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:26,320 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-11-09 14:53:26,321 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552
[2020-11-09 14:53:26,321 INFO  L87              Difference]: Start difference. First operand 70 states and 169 transitions. Second operand 23 states.
[2020-11-09 14:53:27,697 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:27,697 INFO  L93              Difference]: Finished difference Result 142 states and 337 transitions.
[2020-11-09 14:53:27,698 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. 
[2020-11-09 14:53:27,698 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states. Word has length 26
[2020-11-09 14:53:27,698 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:27,700 INFO  L225             Difference]: With dead ends: 142
[2020-11-09 14:53:27,700 INFO  L226             Difference]: Without dead ends: 133
[2020-11-09 14:53:27,701 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1045, Invalid=2377, Unknown=0, NotChecked=0, Total=3422
[2020-11-09 14:53:27,701 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2020-11-09 14:53:27,704 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 90.
[2020-11-09 14:53:27,704 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 90 states.
[2020-11-09 14:53:27,705 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 229 transitions.
[2020-11-09 14:53:27,705 INFO  L78                 Accepts]: Start accepts. Automaton has 90 states and 229 transitions. Word has length 26
[2020-11-09 14:53:27,705 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:27,705 INFO  L481      AbstractCegarLoop]: Abstraction has 90 states and 229 transitions.
[2020-11-09 14:53:27,705 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-11-09 14:53:27,705 INFO  L276                IsEmpty]: Start isEmpty. Operand 90 states and 229 transitions.
[2020-11-09 14:53:27,706 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-11-09 14:53:27,706 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:27,706 INFO  L422         BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:27,918 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:27,918 INFO  L429      AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:27,919 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:27,919 INFO  L82        PathProgramCache]: Analyzing trace with hash -464271481, now seen corresponding path program 43 times
[2020-11-09 14:53:27,921 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:27,921 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437143397]
[2020-11-09 14:53:27,921 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:27,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:28,229 INFO  L134       CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:28,230 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437143397]
[2020-11-09 14:53:28,230 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925034198]
[2020-11-09 14:53:28,230 INFO  L93    rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:28,304 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:28,305 INFO  L263         TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-11-09 14:53:28,306 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:28,336 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2020-11-09 14:53:28,356 INFO  L134       CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:28,357 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:28,357 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-11-09 14:53:28,357 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1711553237]
[2020-11-09 14:53:28,357 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:28,362 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:28,369 INFO  L252    McrAutomatonBuilder]: Finished intersection with 33 states and 37 transitions.
[2020-11-09 14:53:28,370 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:28,405 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [13900#(and (<= ~i~0 21) (= ULTIMATE.start_main_~condI~0 0))]
[2020-11-09 14:53:28,405 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-11-09 14:53:28,405 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:28,406 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-11-09 14:53:28,409 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600
[2020-11-09 14:53:28,409 INFO  L87              Difference]: Start difference. First operand 90 states and 229 transitions. Second operand 24 states.
[2020-11-09 14:53:29,788 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:29,789 INFO  L93              Difference]: Finished difference Result 142 states and 337 transitions.
[2020-11-09 14:53:29,790 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. 
[2020-11-09 14:53:29,790 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states. Word has length 27
[2020-11-09 14:53:29,790 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:29,791 INFO  L225             Difference]: With dead ends: 142
[2020-11-09 14:53:29,791 INFO  L226             Difference]: Without dead ends: 133
[2020-11-09 14:53:29,792 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1252, Invalid=2780, Unknown=0, NotChecked=0, Total=4032
[2020-11-09 14:53:29,793 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2020-11-09 14:53:29,794 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 69.
[2020-11-09 14:53:29,794 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 69 states.
[2020-11-09 14:53:29,795 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 167 transitions.
[2020-11-09 14:53:29,795 INFO  L78                 Accepts]: Start accepts. Automaton has 69 states and 167 transitions. Word has length 27
[2020-11-09 14:53:29,795 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:29,795 INFO  L481      AbstractCegarLoop]: Abstraction has 69 states and 167 transitions.
[2020-11-09 14:53:29,795 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-11-09 14:53:29,795 INFO  L276                IsEmpty]: Start isEmpty. Operand 69 states and 167 transitions.
[2020-11-09 14:53:29,795 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-11-09 14:53:29,795 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:29,796 INFO  L422         BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:29,996 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44
[2020-11-09 14:53:29,996 INFO  L429      AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:29,997 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:29,997 INFO  L82        PathProgramCache]: Analyzing trace with hash 1586979020, now seen corresponding path program 44 times
[2020-11-09 14:53:29,999 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:29,999 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178862481]
[2020-11-09 14:53:30,000 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:30,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-09 14:53:30,279 INFO  L134       CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:30,279 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178862481]
[2020-11-09 14:53:30,280 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932799774]
[2020-11-09 14:53:30,280 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:30,350 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-11-09 14:53:30,350 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-11-09 14:53:30,352 INFO  L263         TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 23 conjunts are in the unsatisfiable core
[2020-11-09 14:53:30,352 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-11-09 14:53:30,383 INFO  L603       QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-09 14:53:30,408 INFO  L134       CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-09 14:53:30,408 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-11-09 14:53:30,408 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22
[2020-11-09 14:53:30,409 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1746603419]
[2020-11-09 14:53:30,409 INFO  L194    McrAutomatonBuilder]: Constructing automaton for MCR equivalence class.
[2020-11-09 14:53:30,413 INFO  L249    McrAutomatonBuilder]: Started intersection.
[2020-11-09 14:53:30,420 INFO  L252    McrAutomatonBuilder]: Finished intersection with 34 states and 39 transitions.
[2020-11-09 14:53:30,420 INFO  L276    McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider
[2020-11-09 14:53:30,437 INFO  L301    McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: []
[2020-11-09 14:53:30,437 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-11-09 14:53:30,437 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-11-09 14:53:30,438 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-11-09 14:53:30,438 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552
[2020-11-09 14:53:30,438 INFO  L87              Difference]: Start difference. First operand 69 states and 167 transitions. Second operand 23 states.
[2020-11-09 14:53:31,918 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-09 14:53:31,918 INFO  L93              Difference]: Finished difference Result 120 states and 293 transitions.
[2020-11-09 14:53:31,919 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. 
[2020-11-09 14:53:31,919 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-11-09 14:53:31,919 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-09 14:53:31,920 INFO  L225             Difference]: With dead ends: 120
[2020-11-09 14:53:31,920 INFO  L226             Difference]: Without dead ends: 115
[2020-11-09 14:53:31,921 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1134, Invalid=2526, Unknown=0, NotChecked=0, Total=3660
[2020-11-09 14:53:31,921 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2020-11-09 14:53:31,923 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91.
[2020-11-09 14:53:31,923 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 91 states.
[2020-11-09 14:53:31,924 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 233 transitions.
[2020-11-09 14:53:31,924 INFO  L78                 Accepts]: Start accepts. Automaton has 91 states and 233 transitions. Word has length 27
[2020-11-09 14:53:31,924 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-11-09 14:53:31,924 INFO  L481      AbstractCegarLoop]: Abstraction has 91 states and 233 transitions.
[2020-11-09 14:53:31,925 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-11-09 14:53:31,925 INFO  L276                IsEmpty]: Start isEmpty. Operand 91 states and 233 transitions.
[2020-11-09 14:53:31,925 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-11-09 14:53:31,925 INFO  L414         BasicCegarLoop]: Found error trace
[2020-11-09 14:53:31,925 INFO  L422         BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-09 14:53:32,133 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-11-09 14:53:32,134 INFO  L429      AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-09 14:53:32,134 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-11-09 14:53:32,134 INFO  L82        PathProgramCache]: Analyzing trace with hash 1867154761, now seen corresponding path program 45 times
[2020-11-09 14:53:32,136 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-11-09 14:53:32,136 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136204003]
[2020-11-09 14:53:32,137 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-09 14:53:32,149 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-09 14:53:32,149 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-09 14:53:32,162 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-11-09 14:53:32,163 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-11-09 14:53:32,192 INFO  L173   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-11-09 14:53:32,193 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2020-11-09 14:53:32,193 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46
[2020-11-09 14:53:32,276 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 02:53:32 BasicIcfg
[2020-11-09 14:53:32,276 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-11-09 14:53:32,279 INFO  L168              Benchmark]: Toolchain (without parser) took 59951.87 ms. Allocated memory was 161.5 MB in the beginning and 336.6 MB in the end (delta: 175.1 MB). Free memory was 135.1 MB in the beginning and 198.6 MB in the end (delta: -63.4 MB). Peak memory consumption was 113.1 MB. Max. memory is 8.0 GB.
[2020-11-09 14:53:32,279 INFO  L168              Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 161.5 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-11-09 14:53:32,279 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 743.21 ms. Allocated memory is still 161.5 MB. Free memory was 134.5 MB in the beginning and 141.7 MB in the end (delta: -7.1 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB.
[2020-11-09 14:53:32,280 INFO  L168              Benchmark]: Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 161.5 MB. Free memory was 141.7 MB in the beginning and 140.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2020-11-09 14:53:32,280 INFO  L168              Benchmark]: Boogie Preprocessor took 30.55 ms. Allocated memory is still 161.5 MB. Free memory was 140.1 MB in the beginning and 138.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-11-09 14:53:32,281 INFO  L168              Benchmark]: RCFGBuilder took 571.23 ms. Allocated memory is still 161.5 MB. Free memory was 138.5 MB in the beginning and 118.6 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB.
[2020-11-09 14:53:32,281 INFO  L168              Benchmark]: TraceAbstraction took 58544.20 ms. Allocated memory was 161.5 MB in the beginning and 336.6 MB in the end (delta: 175.1 MB). Free memory was 118.1 MB in the beginning and 198.6 MB in the end (delta: -80.5 MB). Peak memory consumption was 95.1 MB. Max. memory is 8.0 GB.
[2020-11-09 14:53:32,283 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.26 ms. Allocated memory is still 161.5 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 743.21 ms. Allocated memory is still 161.5 MB. Free memory was 134.5 MB in the beginning and 141.7 MB in the end (delta: -7.1 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB.
 * Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 161.5 MB. Free memory was 141.7 MB in the beginning and 140.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 30.55 ms. Allocated memory is still 161.5 MB. Free memory was 140.1 MB in the beginning and 138.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 571.23 ms. Allocated memory is still 161.5 MB. Free memory was 138.5 MB in the beginning and 118.6 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 58544.20 ms. Allocated memory was 161.5 MB in the beginning and 336.6 MB in the end (delta: 175.1 MB). Free memory was 118.1 MB in the beginning and 198.6 MB in the end (delta: -80.5 MB). Peak memory consumption was 95.1 MB. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: PetriNetLargeBlockEncoding benchmarks
    637 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 15 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 65 PlacesBefore, 20 PlacesAfterwards, 64 TransitionsBefore, 16 TransitionsAfterwards, 1144 CoEnabledTransitionPairs, 7 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 1187 MoverChecksTotal
  - CounterExampleResult [Line: 685]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L686]               0  int i = 3, j = 6;
[L704]               0  pthread_t id1, id2;
[L705]  FCALL, FORK  0  pthread_create(&id1, ((void *)0), t1, ((void *)0))
        VAL             [arg={0:0}, i=3, j=6]
[L706]  FCALL, FORK  0  pthread_create(&id2, ((void *)0), t2, ((void *)0))
        VAL             [arg={0:0}, arg={0:0}, i=3, j=6]
[L708]               0  int condI = i >= (2*10 +6);
        VAL             [arg={0:0}, arg={0:0}, i=3, j=6]
[L696]               2  int k = 0;
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0]
[L688]               1  int k = 0;
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0]
[L688]  COND TRUE    1  k < 10
[L690]               1  i = j + 1
[L688]               1  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1]
[L696]  COND TRUE    2  k < 10
[L698]               2  j = i + 1
[L696]               2  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1]
[L688]  COND TRUE    1  k < 10
[L690]               1  i = j + 1
[L688]               1  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=2, k=1]
[L696]  COND TRUE    2  k < 10
[L698]               2  j = i + 1
[L696]               2  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2]
[L688]  COND TRUE    1  k < 10
[L690]               1  i = j + 1
[L688]               1  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3]
[L696]  COND TRUE    2  k < 10
[L698]               2  j = i + 1
[L696]               2  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3]
[L688]  COND TRUE    1  k < 10
[L690]               1  i = j + 1
[L688]               1  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=4, k=3]
[L696]  COND TRUE    2  k < 10
[L698]               2  j = i + 1
[L696]               2  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4]
[L688]  COND TRUE    1  k < 10
[L690]               1  i = j + 1
[L688]               1  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=5, k=4]
[L696]  COND TRUE    2  k < 10
[L698]               2  j = i + 1
[L696]               2  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5]
[L688]  COND TRUE    1  k < 10
[L690]               1  i = j + 1
[L688]               1  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6]
[L696]  COND TRUE    2  k < 10
[L698]               2  j = i + 1
[L696]               2  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6]
[L688]  COND TRUE    1  k < 10
[L690]               1  i = j + 1
[L688]               1  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7]
[L696]  COND TRUE    2  k < 10
[L698]               2  j = i + 1
[L696]               2  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7]
[L688]  COND TRUE    1  k < 10
[L690]               1  i = j + 1
[L688]               1  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8]
[L696]  COND TRUE    2  k < 10
[L698]               2  j = i + 1
[L696]               2  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8]
[L688]  COND TRUE    1  k < 10
[L690]               1  i = j + 1
[L688]               1  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9]
[L696]  COND TRUE    2  k < 10
[L698]               2  j = i + 1
[L696]               2  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9]
[L688]  COND TRUE    1  k < 10
[L690]               1  i = j + 1
[L688]               1  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=10]
[L696]  COND TRUE    2  k < 10
[L698]               2  j = i + 1
[L696]               2  k++
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10]
[L711]               0  int condJ = j >= (2*10 +6);
[L713]  COND TRUE    0  condI || condJ
[L685]  COND FALSE   0  !(0)
[L685]               0  __assert_fail ("0", "triangular-longer-2.c", 8, __extension__ __PRETTY_FUNCTION__)
        VAL             [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 58.3s, OverallIterations: 47, TraceHistogramMax: 10, AutomataDifference: 29.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 651 SDtfs, 2710 SDslu, 3276 SDs, 0 SdLazy, 3523 SolverSat, 2369 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2438 GetRequests, 904 SyntacticMatches, 53 SemanticMatches, 1481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15223 ImplicationChecksByTransitivity, 29.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 46 MinimizatonAttempts, 1149 StatesRemovedByMinimization, 45 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 1658 NumberOfCodeBlocks, 1658 NumberOfCodeBlocksAsserted, 198 NumberOfCheckSat, 1542 ConstructedInterpolants, 0 QuantifiedInterpolants, 121908 SizeOfPredicates, 470 NumberOfNonLiveVariables, 5586 ConjunctsInSsa, 642 ConjunctsInUnsatCore, 88 InterpolantComputations, 4 PerfectInterpolantSequences, 0/2580 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...