/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.2.1-dev-4f750a8
[2020-12-22 08:43:42,234 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-12-22 08:43:42,239 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2020-12-22 08:43:42,300 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2020-12-22 08:43:42,353 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2020-12-22 08:43:42,420 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-12-22 08:43:42,421 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-12-22 08:43:42,423 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2020-12-22 08:43:42,478 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-12-22 08:43:42,478 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-12-22 08:43:42,483 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-12-22 08:43:42,483 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-12-22 08:43:42,483 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-12-22 08:43:42,484 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-12-22 08:43:42,484 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-12-22 08:43:42,484 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-12-22 08:43:42,485 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-12-22 08:43:42,485 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-12-22 08:43:42,486 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-12-22 08:43:42,487 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-12-22 08:43:42,487 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-12-22 08:43:42,487 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-12-22 08:43:42,487 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-12-22 08:43:42,488 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-12-22 08:43:42,488 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-12-22 08:43:42,488 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-12-22 08:43:42,488 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-12-22 08:43:42,489 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-12-22 08:43:42,489 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-12-22 08:43:42,489 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-12-22 08:43:42,490 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-12-22 08:43:42,490 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-12-22 08:43:42,490 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-12-22 08:43:42,490 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-12-22 08:43:42,955 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-12-22 08:43:42,987 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-12-22 08:43:42,990 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-12-22 08:43:42,992 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-12-22 08:43:42,993 INFO  L275        PluginConnector]: CDTParser initialized
[2020-12-22 08:43:42,994 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-12-22 08:43:43,081 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d969eaec1/3b3fe963cbfc441eb81dbcc4a053fe93/FLAG13fef4ede
[2020-12-22 08:43:43,954 INFO  L306              CDTParser]: Found 1 translation units.
[2020-12-22 08:43:43,955 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-12-22 08:43:43,974 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d969eaec1/3b3fe963cbfc441eb81dbcc4a053fe93/FLAG13fef4ede
[2020-12-22 08:43:44,118 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d969eaec1/3b3fe963cbfc441eb81dbcc4a053fe93
[2020-12-22 08:43:44,121 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-12-22 08:43:44,124 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2020-12-22 08:43:44,125 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-12-22 08:43:44,125 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-12-22 08:43:44,129 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-12-22 08:43:44,130 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:43:44" (1/1) ...
[2020-12-22 08:43:44,132 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4977a62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:44, skipping insertion in model container
[2020-12-22 08:43:44,132 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:43:44" (1/1) ...
[2020-12-22 08:43:44,140 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-12-22 08:43:44,202 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-12-22 08:43:44,471 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8487,8500]
[2020-12-22 08:43:44,512 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11739,11752]
[2020-12-22 08:43:44,532 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12895,12908]
[2020-12-22 08:43:44,541 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13551,13564]
[2020-12-22 08:43:44,568 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15030,15043]
[2020-12-22 08:43:44,575 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15686,15699]
[2020-12-22 08:43:44,594 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16670,16683]
[2020-12-22 08:43:44,611 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18966,18979]
[2020-12-22 08:43:44,616 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19625,19638]
[2020-12-22 08:43:44,622 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20607,20620]
[2020-12-22 08:43:44,633 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22398,22411]
[2020-12-22 08:43:44,731 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-12-22 08:43:44,747 INFO  L203         MainTranslator]: Completed pre-run
[2020-12-22 08:43:44,841 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8487,8500]
[2020-12-22 08:43:44,855 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11739,11752]
[2020-12-22 08:43:44,863 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12895,12908]
[2020-12-22 08:43:44,867 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13551,13564]
[2020-12-22 08:43:44,876 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15030,15043]
[2020-12-22 08:43:44,880 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15686,15699]
[2020-12-22 08:43:44,887 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16670,16683]
[2020-12-22 08:43:44,902 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18966,18979]
[2020-12-22 08:43:44,910 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19625,19638]
[2020-12-22 08:43:44,924 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20607,20620]
[2020-12-22 08:43:44,942 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22398,22411]
[2020-12-22 08:43:45,043 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-12-22 08:43:45,066 INFO  L208         MainTranslator]: Completed translation
[2020-12-22 08:43:45,067 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45 WrapperNode
[2020-12-22 08:43:45,067 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-12-22 08:43:45,069 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2020-12-22 08:43:45,069 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2020-12-22 08:43:45,069 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2020-12-22 08:43:45,103 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ...
[2020-12-22 08:43:45,159 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ...
[2020-12-22 08:43:45,239 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2020-12-22 08:43:45,240 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-12-22 08:43:45,240 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-12-22 08:43:45,241 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-12-22 08:43:45,256 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ...
[2020-12-22 08:43:45,257 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ...
[2020-12-22 08:43:45,270 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ...
[2020-12-22 08:43:45,271 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ...
[2020-12-22 08:43:45,322 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ...
[2020-12-22 08:43:45,354 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ...
[2020-12-22 08:43:45,369 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (1/1) ...
[2020-12-22 08:43:45,381 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-12-22 08:43:45,382 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-12-22 08:43:45,383 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-12-22 08:43:45,383 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-12-22 08:43:45,384 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (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
[2020-12-22 08:43:45,489 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-12-22 08:43:45,489 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-12-22 08:43:45,489 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-12-22 08:43:45,489 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-12-22 08:43:47,900 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-12-22 08:43:47,901 INFO  L299             CfgBuilder]: Removed 4 assume(true) statements.
[2020-12-22 08:43:47,903 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:43:47 BoogieIcfgContainer
[2020-12-22 08:43:47,903 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-12-22 08:43:47,905 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-12-22 08:43:47,905 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-12-22 08:43:47,909 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-12-22 08:43:47,909 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:43:44" (1/3) ...
[2020-12-22 08:43:47,910 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3137d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:43:47, skipping insertion in model container
[2020-12-22 08:43:47,910 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:43:45" (2/3) ...
[2020-12-22 08:43:47,911 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3137d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:43:47, skipping insertion in model container
[2020-12-22 08:43:47,911 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:43:47" (3/3) ...
[2020-12-22 08:43:47,912 INFO  L111   eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-12-22 08:43:47,919 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-12-22 08:43:47,925 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations.
[2020-12-22 08:43:47,945 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 11 error locations.
[2020-12-22 08:43:47,977 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-12-22 08:43:47,977 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-12-22 08:43:47,978 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-12-22 08:43:47,978 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-12-22 08:43:47,978 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-12-22 08:43:47,978 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-12-22 08:43:47,978 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-12-22 08:43:47,978 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-12-22 08:43:48,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 357 states.
[2020-12-22 08:43:48,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-12-22 08:43:48,019 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:43:48,020 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:43:48,021 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:43:48,027 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:43:48,027 INFO  L82        PathProgramCache]: Analyzing trace with hash 1863160701, now seen corresponding path program 1 times
[2020-12-22 08:43:48,038 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:43:48,038 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266787885]
[2020-12-22 08:43:48,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:43:48,284 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:43:48,540 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:43:48,541 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266787885]
[2020-12-22 08:43:48,542 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:43:48,542 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-12-22 08:43:48,543 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212823920]
[2020-12-22 08:43:48,549 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-12-22 08:43:48,549 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:43:48,564 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-12-22 08:43:48,565 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-12-22 08:43:48,568 INFO  L87              Difference]: Start difference. First operand 357 states. Second operand 5 states.
[2020-12-22 08:43:49,164 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:43:49,164 INFO  L93              Difference]: Finished difference Result 569 states and 972 transitions.
[2020-12-22 08:43:49,165 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-12-22 08:43:49,166 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 58
[2020-12-22 08:43:49,166 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:43:49,182 INFO  L225             Difference]: With dead ends: 569
[2020-12-22 08:43:49,183 INFO  L226             Difference]: Without dead ends: 293
[2020-12-22 08:43:49,188 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2020-12-22 08:43:49,210 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 293 states.
[2020-12-22 08:43:49,292 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293.
[2020-12-22 08:43:49,294 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 293 states.
[2020-12-22 08:43:49,296 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 367 transitions.
[2020-12-22 08:43:49,298 INFO  L78                 Accepts]: Start accepts. Automaton has 293 states and 367 transitions. Word has length 58
[2020-12-22 08:43:49,299 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:43:49,299 INFO  L481      AbstractCegarLoop]: Abstraction has 293 states and 367 transitions.
[2020-12-22 08:43:49,299 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-12-22 08:43:49,299 INFO  L276                IsEmpty]: Start isEmpty. Operand 293 states and 367 transitions.
[2020-12-22 08:43:49,306 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2020-12-22 08:43:49,306 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:43:49,307 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:43:49,311 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-12-22 08:43:49,312 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:43:49,313 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:43:49,313 INFO  L82        PathProgramCache]: Analyzing trace with hash -1094505509, now seen corresponding path program 1 times
[2020-12-22 08:43:49,314 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:43:49,314 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800143512]
[2020-12-22 08:43:49,314 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:43:49,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:43:49,643 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:43:49,644 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800143512]
[2020-12-22 08:43:49,644 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:43:49,644 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-12-22 08:43:49,644 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14677966]
[2020-12-22 08:43:49,646 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-12-22 08:43:49,646 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:43:49,647 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-12-22 08:43:49,647 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-12-22 08:43:49,648 INFO  L87              Difference]: Start difference. First operand 293 states and 367 transitions. Second operand 6 states.
[2020-12-22 08:43:50,250 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:43:50,251 INFO  L93              Difference]: Finished difference Result 601 states and 765 transitions.
[2020-12-22 08:43:50,253 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-12-22 08:43:50,253 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 59
[2020-12-22 08:43:50,254 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:43:50,259 INFO  L225             Difference]: With dead ends: 601
[2020-12-22 08:43:50,260 INFO  L226             Difference]: Without dead ends: 378
[2020-12-22 08:43:50,262 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56
[2020-12-22 08:43:50,264 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 378 states.
[2020-12-22 08:43:50,295 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 338.
[2020-12-22 08:43:50,295 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 338 states.
[2020-12-22 08:43:50,297 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 437 transitions.
[2020-12-22 08:43:50,297 INFO  L78                 Accepts]: Start accepts. Automaton has 338 states and 437 transitions. Word has length 59
[2020-12-22 08:43:50,298 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:43:50,298 INFO  L481      AbstractCegarLoop]: Abstraction has 338 states and 437 transitions.
[2020-12-22 08:43:50,298 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-12-22 08:43:50,298 INFO  L276                IsEmpty]: Start isEmpty. Operand 338 states and 437 transitions.
[2020-12-22 08:43:50,300 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2020-12-22 08:43:50,300 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:43:50,300 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:43:50,301 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-12-22 08:43:50,301 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:43:50,301 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:43:50,302 INFO  L82        PathProgramCache]: Analyzing trace with hash 568036411, now seen corresponding path program 1 times
[2020-12-22 08:43:50,302 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:43:50,302 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908624998]
[2020-12-22 08:43:50,302 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:43:50,341 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:43:50,415 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:43:50,416 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908624998]
[2020-12-22 08:43:50,416 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:43:50,416 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-12-22 08:43:50,417 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043655025]
[2020-12-22 08:43:50,417 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-12-22 08:43:50,417 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:43:50,418 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-12-22 08:43:50,419 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-12-22 08:43:50,419 INFO  L87              Difference]: Start difference. First operand 338 states and 437 transitions. Second operand 5 states.
[2020-12-22 08:43:50,870 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:43:50,871 INFO  L93              Difference]: Finished difference Result 606 states and 801 transitions.
[2020-12-22 08:43:50,872 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-12-22 08:43:50,872 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 60
[2020-12-22 08:43:50,873 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:43:50,874 INFO  L225             Difference]: With dead ends: 606
[2020-12-22 08:43:50,875 INFO  L226             Difference]: Without dead ends: 322
[2020-12-22 08:43:50,876 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2020-12-22 08:43:50,877 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 322 states.
[2020-12-22 08:43:50,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322.
[2020-12-22 08:43:50,898 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 322 states.
[2020-12-22 08:43:50,900 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 417 transitions.
[2020-12-22 08:43:50,900 INFO  L78                 Accepts]: Start accepts. Automaton has 322 states and 417 transitions. Word has length 60
[2020-12-22 08:43:50,900 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:43:50,900 INFO  L481      AbstractCegarLoop]: Abstraction has 322 states and 417 transitions.
[2020-12-22 08:43:50,901 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-12-22 08:43:50,901 INFO  L276                IsEmpty]: Start isEmpty. Operand 322 states and 417 transitions.
[2020-12-22 08:43:50,902 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2020-12-22 08:43:50,903 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:43:50,903 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:43:50,903 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-12-22 08:43:50,903 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:43:50,904 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:43:50,904 INFO  L82        PathProgramCache]: Analyzing trace with hash 1932821818, now seen corresponding path program 1 times
[2020-12-22 08:43:50,904 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:43:50,905 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661336689]
[2020-12-22 08:43:50,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:43:50,937 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:43:51,006 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:43:51,006 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661336689]
[2020-12-22 08:43:51,007 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:43:51,007 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-12-22 08:43:51,007 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065327065]
[2020-12-22 08:43:51,007 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-12-22 08:43:51,008 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:43:51,008 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-12-22 08:43:51,009 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-12-22 08:43:51,009 INFO  L87              Difference]: Start difference. First operand 322 states and 417 transitions. Second operand 5 states.
[2020-12-22 08:43:51,389 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:43:51,389 INFO  L93              Difference]: Finished difference Result 590 states and 779 transitions.
[2020-12-22 08:43:51,390 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-12-22 08:43:51,390 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 61
[2020-12-22 08:43:51,390 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:43:51,392 INFO  L225             Difference]: With dead ends: 590
[2020-12-22 08:43:51,393 INFO  L226             Difference]: Without dead ends: 311
[2020-12-22 08:43:51,394 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2020-12-22 08:43:51,395 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 311 states.
[2020-12-22 08:43:51,415 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311.
[2020-12-22 08:43:51,416 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 311 states.
[2020-12-22 08:43:51,417 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 403 transitions.
[2020-12-22 08:43:51,418 INFO  L78                 Accepts]: Start accepts. Automaton has 311 states and 403 transitions. Word has length 61
[2020-12-22 08:43:51,418 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:43:51,418 INFO  L481      AbstractCegarLoop]: Abstraction has 311 states and 403 transitions.
[2020-12-22 08:43:51,418 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-12-22 08:43:51,418 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states and 403 transitions.
[2020-12-22 08:43:51,419 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2020-12-22 08:43:51,419 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:43:51,420 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:43:51,420 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-12-22 08:43:51,420 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:43:51,421 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:43:51,421 INFO  L82        PathProgramCache]: Analyzing trace with hash 207205371, now seen corresponding path program 1 times
[2020-12-22 08:43:51,421 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:43:51,421 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43503184]
[2020-12-22 08:43:51,422 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:43:51,478 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:43:51,696 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:43:51,697 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43503184]
[2020-12-22 08:43:51,697 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:43:51,697 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-12-22 08:43:51,697 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351052963]
[2020-12-22 08:43:51,698 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-12-22 08:43:51,698 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:43:51,699 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-12-22 08:43:51,699 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-12-22 08:43:51,699 INFO  L87              Difference]: Start difference. First operand 311 states and 403 transitions. Second operand 9 states.
[2020-12-22 08:43:53,212 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:43:53,212 INFO  L93              Difference]: Finished difference Result 864 states and 1193 transitions.
[2020-12-22 08:43:53,213 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-12-22 08:43:53,213 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 62
[2020-12-22 08:43:53,214 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:43:53,218 INFO  L225             Difference]: With dead ends: 864
[2020-12-22 08:43:53,218 INFO  L226             Difference]: Without dead ends: 721
[2020-12-22 08:43:53,219 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420
[2020-12-22 08:43:53,221 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 721 states.
[2020-12-22 08:43:53,246 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 311.
[2020-12-22 08:43:53,247 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 311 states.
[2020-12-22 08:43:53,248 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 402 transitions.
[2020-12-22 08:43:53,248 INFO  L78                 Accepts]: Start accepts. Automaton has 311 states and 402 transitions. Word has length 62
[2020-12-22 08:43:53,249 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:43:53,249 INFO  L481      AbstractCegarLoop]: Abstraction has 311 states and 402 transitions.
[2020-12-22 08:43:53,249 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-12-22 08:43:53,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states and 402 transitions.
[2020-12-22 08:43:53,250 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2020-12-22 08:43:53,250 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:43:53,250 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:43:53,250 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-12-22 08:43:53,251 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:43:53,251 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:43:53,251 INFO  L82        PathProgramCache]: Analyzing trace with hash -201639857, now seen corresponding path program 1 times
[2020-12-22 08:43:53,251 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:43:53,252 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490076377]
[2020-12-22 08:43:53,252 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:43:53,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:43:53,528 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:43:53,529 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490076377]
[2020-12-22 08:43:53,529 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:43:53,530 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-12-22 08:43:53,530 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334550510]
[2020-12-22 08:43:53,530 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-12-22 08:43:53,531 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:43:53,532 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-12-22 08:43:53,532 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-12-22 08:43:53,533 INFO  L87              Difference]: Start difference. First operand 311 states and 402 transitions. Second operand 9 states.
[2020-12-22 08:43:55,070 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:43:55,071 INFO  L93              Difference]: Finished difference Result 838 states and 1159 transitions.
[2020-12-22 08:43:55,072 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-12-22 08:43:55,073 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 62
[2020-12-22 08:43:55,077 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:43:55,082 INFO  L225             Difference]: With dead ends: 838
[2020-12-22 08:43:55,082 INFO  L226             Difference]: Without dead ends: 721
[2020-12-22 08:43:55,084 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420
[2020-12-22 08:43:55,091 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 721 states.
[2020-12-22 08:43:55,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 311.
[2020-12-22 08:43:55,118 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 311 states.
[2020-12-22 08:43:55,119 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 401 transitions.
[2020-12-22 08:43:55,119 INFO  L78                 Accepts]: Start accepts. Automaton has 311 states and 401 transitions. Word has length 62
[2020-12-22 08:43:55,120 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:43:55,120 INFO  L481      AbstractCegarLoop]: Abstraction has 311 states and 401 transitions.
[2020-12-22 08:43:55,120 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-12-22 08:43:55,120 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states and 401 transitions.
[2020-12-22 08:43:55,121 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2020-12-22 08:43:55,121 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:43:55,121 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:43:55,121 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-12-22 08:43:55,122 INFO  L429      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:43:55,122 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:43:55,122 INFO  L82        PathProgramCache]: Analyzing trace with hash 1938423665, now seen corresponding path program 1 times
[2020-12-22 08:43:55,123 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:43:55,123 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372027647]
[2020-12-22 08:43:55,123 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:43:55,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:43:55,328 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:43:55,329 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372027647]
[2020-12-22 08:43:55,329 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:43:55,329 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-12-22 08:43:55,330 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416136980]
[2020-12-22 08:43:55,330 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-12-22 08:43:55,330 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:43:55,331 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-12-22 08:43:55,331 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-12-22 08:43:55,331 INFO  L87              Difference]: Start difference. First operand 311 states and 401 transitions. Second operand 9 states.
[2020-12-22 08:43:56,692 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:43:56,693 INFO  L93              Difference]: Finished difference Result 873 states and 1198 transitions.
[2020-12-22 08:43:56,693 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-12-22 08:43:56,693 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 62
[2020-12-22 08:43:56,693 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:43:56,697 INFO  L225             Difference]: With dead ends: 873
[2020-12-22 08:43:56,698 INFO  L226             Difference]: Without dead ends: 721
[2020-12-22 08:43:56,699 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420
[2020-12-22 08:43:56,700 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 721 states.
[2020-12-22 08:43:56,726 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 311.
[2020-12-22 08:43:56,727 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 311 states.
[2020-12-22 08:43:56,728 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 400 transitions.
[2020-12-22 08:43:56,728 INFO  L78                 Accepts]: Start accepts. Automaton has 311 states and 400 transitions. Word has length 62
[2020-12-22 08:43:56,728 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:43:56,728 INFO  L481      AbstractCegarLoop]: Abstraction has 311 states and 400 transitions.
[2020-12-22 08:43:56,729 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-12-22 08:43:56,729 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states and 400 transitions.
[2020-12-22 08:43:56,729 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2020-12-22 08:43:56,730 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:43:56,730 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:43:56,730 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-12-22 08:43:56,730 INFO  L429      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:43:56,731 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:43:56,731 INFO  L82        PathProgramCache]: Analyzing trace with hash -1233191565, now seen corresponding path program 1 times
[2020-12-22 08:43:56,731 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:43:56,731 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696522016]
[2020-12-22 08:43:56,731 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:43:56,768 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:43:56,958 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:43:56,958 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696522016]
[2020-12-22 08:43:56,959 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:43:56,959 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-12-22 08:43:56,959 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044056859]
[2020-12-22 08:43:56,959 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-12-22 08:43:56,960 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:43:56,960 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-12-22 08:43:56,960 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-12-22 08:43:56,961 INFO  L87              Difference]: Start difference. First operand 311 states and 400 transitions. Second operand 8 states.
[2020-12-22 08:43:57,740 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:43:57,740 INFO  L93              Difference]: Finished difference Result 594 states and 771 transitions.
[2020-12-22 08:43:57,741 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-12-22 08:43:57,741 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 62
[2020-12-22 08:43:57,741 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:43:57,743 INFO  L225             Difference]: With dead ends: 594
[2020-12-22 08:43:57,744 INFO  L226             Difference]: Without dead ends: 403
[2020-12-22 08:43:57,744 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2020-12-22 08:43:57,745 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 403 states.
[2020-12-22 08:43:57,771 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 311.
[2020-12-22 08:43:57,771 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 311 states.
[2020-12-22 08:43:57,772 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 399 transitions.
[2020-12-22 08:43:57,773 INFO  L78                 Accepts]: Start accepts. Automaton has 311 states and 399 transitions. Word has length 62
[2020-12-22 08:43:57,773 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:43:57,773 INFO  L481      AbstractCegarLoop]: Abstraction has 311 states and 399 transitions.
[2020-12-22 08:43:57,773 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-12-22 08:43:57,773 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states and 399 transitions.
[2020-12-22 08:43:57,774 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2020-12-22 08:43:57,774 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:43:57,775 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:43:57,775 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-12-22 08:43:57,775 INFO  L429      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:43:57,775 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:43:57,776 INFO  L82        PathProgramCache]: Analyzing trace with hash -2031197374, now seen corresponding path program 1 times
[2020-12-22 08:43:57,776 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:43:57,776 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828957024]
[2020-12-22 08:43:57,776 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:43:57,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:43:57,946 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:43:57,946 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828957024]
[2020-12-22 08:43:57,947 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:43:57,947 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-12-22 08:43:57,947 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069060666]
[2020-12-22 08:43:57,947 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-12-22 08:43:57,948 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:43:57,948 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-12-22 08:43:57,949 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2020-12-22 08:43:57,949 INFO  L87              Difference]: Start difference. First operand 311 states and 399 transitions. Second operand 9 states.
[2020-12-22 08:43:59,554 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:43:59,555 INFO  L93              Difference]: Finished difference Result 819 states and 1126 transitions.
[2020-12-22 08:43:59,556 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-12-22 08:43:59,556 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 64
[2020-12-22 08:43:59,556 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:43:59,560 INFO  L225             Difference]: With dead ends: 819
[2020-12-22 08:43:59,560 INFO  L226             Difference]: Without dead ends: 709
[2020-12-22 08:43:59,561 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462
[2020-12-22 08:43:59,563 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 709 states.
[2020-12-22 08:43:59,594 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 311.
[2020-12-22 08:43:59,594 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 311 states.
[2020-12-22 08:43:59,608 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 398 transitions.
[2020-12-22 08:43:59,608 INFO  L78                 Accepts]: Start accepts. Automaton has 311 states and 398 transitions. Word has length 64
[2020-12-22 08:43:59,608 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:43:59,608 INFO  L481      AbstractCegarLoop]: Abstraction has 311 states and 398 transitions.
[2020-12-22 08:43:59,609 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-12-22 08:43:59,609 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states and 398 transitions.
[2020-12-22 08:43:59,609 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2020-12-22 08:43:59,610 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:43:59,610 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:43:59,610 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-12-22 08:43:59,610 INFO  L429      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:43:59,611 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:43:59,611 INFO  L82        PathProgramCache]: Analyzing trace with hash -119000272, now seen corresponding path program 1 times
[2020-12-22 08:43:59,611 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:43:59,612 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603736162]
[2020-12-22 08:43:59,612 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:43:59,639 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:43:59,900 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:43:59,900 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603736162]
[2020-12-22 08:43:59,900 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:43:59,900 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-12-22 08:43:59,900 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996879382]
[2020-12-22 08:43:59,901 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-12-22 08:43:59,901 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:43:59,901 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-12-22 08:43:59,901 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-12-22 08:43:59,902 INFO  L87              Difference]: Start difference. First operand 311 states and 398 transitions. Second operand 11 states.
[2020-12-22 08:44:00,032 WARN  L197               SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27
[2020-12-22 08:44:00,315 WARN  L197               SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31
[2020-12-22 08:44:00,624 WARN  L197               SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35
[2020-12-22 08:44:01,944 WARN  L197               SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34
[2020-12-22 08:44:02,212 WARN  L197               SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34
[2020-12-22 08:44:05,540 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:44:05,541 INFO  L93              Difference]: Finished difference Result 1860 states and 2646 transitions.
[2020-12-22 08:44:05,542 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2020-12-22 08:44:05,542 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 64
[2020-12-22 08:44:05,542 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:44:05,549 INFO  L225             Difference]: With dead ends: 1860
[2020-12-22 08:44:05,549 INFO  L226             Difference]: Without dead ends: 1738
[2020-12-22 08:44:05,551 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560
[2020-12-22 08:44:05,553 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1738 states.
[2020-12-22 08:44:05,601 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 315.
[2020-12-22 08:44:05,602 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 315 states.
[2020-12-22 08:44:05,603 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 402 transitions.
[2020-12-22 08:44:05,603 INFO  L78                 Accepts]: Start accepts. Automaton has 315 states and 402 transitions. Word has length 64
[2020-12-22 08:44:05,604 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:44:05,604 INFO  L481      AbstractCegarLoop]: Abstraction has 315 states and 402 transitions.
[2020-12-22 08:44:05,604 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-12-22 08:44:05,604 INFO  L276                IsEmpty]: Start isEmpty. Operand 315 states and 402 transitions.
[2020-12-22 08:44:05,605 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2020-12-22 08:44:05,605 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:44:05,605 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:44:05,605 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-12-22 08:44:05,605 INFO  L429      AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:44:05,606 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:44:05,606 INFO  L82        PathProgramCache]: Analyzing trace with hash -1520301075, now seen corresponding path program 1 times
[2020-12-22 08:44:05,606 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:44:05,606 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347392252]
[2020-12-22 08:44:05,607 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:44:05,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:44:05,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:44:05,798 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347392252]
[2020-12-22 08:44:05,798 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:44:05,799 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-12-22 08:44:05,799 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26982632]
[2020-12-22 08:44:05,800 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-12-22 08:44:05,800 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:44:05,800 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-12-22 08:44:05,801 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2020-12-22 08:44:05,801 INFO  L87              Difference]: Start difference. First operand 315 states and 402 transitions. Second operand 9 states.
[2020-12-22 08:44:07,608 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:44:07,609 INFO  L93              Difference]: Finished difference Result 820 states and 1126 transitions.
[2020-12-22 08:44:07,610 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-12-22 08:44:07,610 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 64
[2020-12-22 08:44:07,610 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:44:07,613 INFO  L225             Difference]: With dead ends: 820
[2020-12-22 08:44:07,613 INFO  L226             Difference]: Without dead ends: 713
[2020-12-22 08:44:07,614 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462
[2020-12-22 08:44:07,615 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 713 states.
[2020-12-22 08:44:07,675 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 315.
[2020-12-22 08:44:07,676 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 315 states.
[2020-12-22 08:44:07,678 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 401 transitions.
[2020-12-22 08:44:07,679 INFO  L78                 Accepts]: Start accepts. Automaton has 315 states and 401 transitions. Word has length 64
[2020-12-22 08:44:07,679 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:44:07,679 INFO  L481      AbstractCegarLoop]: Abstraction has 315 states and 401 transitions.
[2020-12-22 08:44:07,679 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-12-22 08:44:07,679 INFO  L276                IsEmpty]: Start isEmpty. Operand 315 states and 401 transitions.
[2020-12-22 08:44:07,680 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2020-12-22 08:44:07,680 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:44:07,680 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:44:07,680 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-12-22 08:44:07,681 INFO  L429      AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:44:07,681 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:44:07,681 INFO  L82        PathProgramCache]: Analyzing trace with hash 1508633347, now seen corresponding path program 1 times
[2020-12-22 08:44:07,681 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:44:07,689 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827617019]
[2020-12-22 08:44:07,689 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:44:07,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:44:07,998 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:44:07,999 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827617019]
[2020-12-22 08:44:07,999 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:44:07,999 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-12-22 08:44:07,999 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315788174]
[2020-12-22 08:44:08,000 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-12-22 08:44:08,000 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:44:08,000 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-12-22 08:44:08,001 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-12-22 08:44:08,001 INFO  L87              Difference]: Start difference. First operand 315 states and 401 transitions. Second operand 11 states.
[2020-12-22 08:44:08,707 WARN  L197               SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35
[2020-12-22 08:44:09,579 WARN  L197               SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27
[2020-12-22 08:44:10,047 WARN  L197               SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34
[2020-12-22 08:44:11,874 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:44:11,874 INFO  L93              Difference]: Finished difference Result 1275 states and 1785 transitions.
[2020-12-22 08:44:11,875 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-12-22 08:44:11,875 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 64
[2020-12-22 08:44:11,875 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:44:11,880 INFO  L225             Difference]: With dead ends: 1275
[2020-12-22 08:44:11,880 INFO  L226             Difference]: Without dead ends: 1270
[2020-12-22 08:44:11,881 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992
[2020-12-22 08:44:11,882 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1270 states.
[2020-12-22 08:44:11,942 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 319.
[2020-12-22 08:44:11,942 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 319 states.
[2020-12-22 08:44:11,944 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 405 transitions.
[2020-12-22 08:44:11,944 INFO  L78                 Accepts]: Start accepts. Automaton has 319 states and 405 transitions. Word has length 64
[2020-12-22 08:44:11,944 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:44:11,944 INFO  L481      AbstractCegarLoop]: Abstraction has 319 states and 405 transitions.
[2020-12-22 08:44:11,944 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-12-22 08:44:11,944 INFO  L276                IsEmpty]: Start isEmpty. Operand 319 states and 405 transitions.
[2020-12-22 08:44:11,945 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2020-12-22 08:44:11,945 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:44:11,945 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:44:11,946 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2020-12-22 08:44:11,946 INFO  L429      AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:44:11,946 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:44:11,946 INFO  L82        PathProgramCache]: Analyzing trace with hash -904154553, now seen corresponding path program 1 times
[2020-12-22 08:44:11,947 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:44:11,947 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607511125]
[2020-12-22 08:44:11,947 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:44:11,973 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:44:12,134 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:44:12,135 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607511125]
[2020-12-22 08:44:12,135 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:44:12,135 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-12-22 08:44:12,135 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877670910]
[2020-12-22 08:44:12,136 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-12-22 08:44:12,136 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:44:12,136 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-12-22 08:44:12,137 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2020-12-22 08:44:12,137 INFO  L87              Difference]: Start difference. First operand 319 states and 405 transitions. Second operand 9 states.
[2020-12-22 08:44:13,825 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:44:13,825 INFO  L93              Difference]: Finished difference Result 718 states and 968 transitions.
[2020-12-22 08:44:13,826 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-12-22 08:44:13,826 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 64
[2020-12-22 08:44:13,826 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:44:13,829 INFO  L225             Difference]: With dead ends: 718
[2020-12-22 08:44:13,829 INFO  L226             Difference]: Without dead ends: 713
[2020-12-22 08:44:13,830 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462
[2020-12-22 08:44:13,831 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 713 states.
[2020-12-22 08:44:13,879 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 319.
[2020-12-22 08:44:13,879 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 319 states.
[2020-12-22 08:44:13,880 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 404 transitions.
[2020-12-22 08:44:13,880 INFO  L78                 Accepts]: Start accepts. Automaton has 319 states and 404 transitions. Word has length 64
[2020-12-22 08:44:13,881 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:44:13,881 INFO  L481      AbstractCegarLoop]: Abstraction has 319 states and 404 transitions.
[2020-12-22 08:44:13,881 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-12-22 08:44:13,881 INFO  L276                IsEmpty]: Start isEmpty. Operand 319 states and 404 transitions.
[2020-12-22 08:44:13,882 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2020-12-22 08:44:13,882 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:44:13,882 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:44:13,882 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2020-12-22 08:44:13,882 INFO  L429      AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:44:13,883 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:44:13,883 INFO  L82        PathProgramCache]: Analyzing trace with hash 1008042549, now seen corresponding path program 1 times
[2020-12-22 08:44:13,883 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:44:13,883 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316533018]
[2020-12-22 08:44:13,883 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:44:13,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:44:14,039 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:44:14,040 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316533018]
[2020-12-22 08:44:14,040 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:44:14,040 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-12-22 08:44:14,040 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818007523]
[2020-12-22 08:44:14,040 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-12-22 08:44:14,041 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:44:14,041 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-12-22 08:44:14,041 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-12-22 08:44:14,042 INFO  L87              Difference]: Start difference. First operand 319 states and 404 transitions. Second operand 9 states.
[2020-12-22 08:44:15,715 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:44:15,715 INFO  L93              Difference]: Finished difference Result 742 states and 1001 transitions.
[2020-12-22 08:44:15,716 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-12-22 08:44:15,716 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 64
[2020-12-22 08:44:15,716 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:44:15,719 INFO  L225             Difference]: With dead ends: 742
[2020-12-22 08:44:15,719 INFO  L226             Difference]: Without dead ends: 725
[2020-12-22 08:44:15,720 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420
[2020-12-22 08:44:15,721 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 725 states.
[2020-12-22 08:44:15,775 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 319.
[2020-12-22 08:44:15,775 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 319 states.
[2020-12-22 08:44:15,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 403 transitions.
[2020-12-22 08:44:15,777 INFO  L78                 Accepts]: Start accepts. Automaton has 319 states and 403 transitions. Word has length 64
[2020-12-22 08:44:15,777 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:44:15,777 INFO  L481      AbstractCegarLoop]: Abstraction has 319 states and 403 transitions.
[2020-12-22 08:44:15,777 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-12-22 08:44:15,777 INFO  L276                IsEmpty]: Start isEmpty. Operand 319 states and 403 transitions.
[2020-12-22 08:44:15,777 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-12-22 08:44:15,778 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:44:15,778 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:44:15,778 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2020-12-22 08:44:15,778 INFO  L429      AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:44:15,778 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:44:15,778 INFO  L82        PathProgramCache]: Analyzing trace with hash -743174492, now seen corresponding path program 1 times
[2020-12-22 08:44:15,779 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:44:15,779 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009542716]
[2020-12-22 08:44:15,779 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:44:15,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:44:15,961 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:44:15,961 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009542716]
[2020-12-22 08:44:15,962 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:44:15,962 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-12-22 08:44:15,962 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443328125]
[2020-12-22 08:44:15,962 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-12-22 08:44:15,962 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:44:15,963 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-12-22 08:44:15,963 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2020-12-22 08:44:15,963 INFO  L87              Difference]: Start difference. First operand 319 states and 403 transitions. Second operand 9 states.
[2020-12-22 08:44:17,916 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:44:17,917 INFO  L93              Difference]: Finished difference Result 718 states and 966 transitions.
[2020-12-22 08:44:17,918 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-12-22 08:44:17,918 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 65
[2020-12-22 08:44:17,918 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:44:17,921 INFO  L225             Difference]: With dead ends: 718
[2020-12-22 08:44:17,921 INFO  L226             Difference]: Without dead ends: 713
[2020-12-22 08:44:17,922 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462
[2020-12-22 08:44:17,923 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 713 states.
[2020-12-22 08:44:17,979 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 315.
[2020-12-22 08:44:17,979 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 315 states.
[2020-12-22 08:44:17,980 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 398 transitions.
[2020-12-22 08:44:17,980 INFO  L78                 Accepts]: Start accepts. Automaton has 315 states and 398 transitions. Word has length 65
[2020-12-22 08:44:17,980 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:44:17,981 INFO  L481      AbstractCegarLoop]: Abstraction has 315 states and 398 transitions.
[2020-12-22 08:44:17,981 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-12-22 08:44:17,981 INFO  L276                IsEmpty]: Start isEmpty. Operand 315 states and 398 transitions.
[2020-12-22 08:44:17,981 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2020-12-22 08:44:17,982 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:44:17,982 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:44:17,982 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2020-12-22 08:44:17,982 INFO  L429      AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:44:17,983 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:44:17,983 INFO  L82        PathProgramCache]: Analyzing trace with hash -1642672525, now seen corresponding path program 1 times
[2020-12-22 08:44:17,983 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:44:17,983 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907928305]
[2020-12-22 08:44:17,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:44:18,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:44:18,150 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:44:18,150 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907928305]
[2020-12-22 08:44:18,150 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:44:18,151 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-12-22 08:44:18,151 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087261653]
[2020-12-22 08:44:18,151 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-12-22 08:44:18,151 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:44:18,152 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-12-22 08:44:18,152 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-12-22 08:44:18,152 INFO  L87              Difference]: Start difference. First operand 315 states and 398 transitions. Second operand 9 states.
[2020-12-22 08:44:19,828 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:44:19,828 INFO  L93              Difference]: Finished difference Result 843 states and 1154 transitions.
[2020-12-22 08:44:19,835 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-12-22 08:44:19,835 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 65
[2020-12-22 08:44:19,835 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:44:19,838 INFO  L225             Difference]: With dead ends: 843
[2020-12-22 08:44:19,838 INFO  L226             Difference]: Without dead ends: 721
[2020-12-22 08:44:19,839 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420
[2020-12-22 08:44:19,840 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 721 states.
[2020-12-22 08:44:19,883 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 311.
[2020-12-22 08:44:19,883 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 311 states.
[2020-12-22 08:44:19,884 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 393 transitions.
[2020-12-22 08:44:19,884 INFO  L78                 Accepts]: Start accepts. Automaton has 311 states and 393 transitions. Word has length 65
[2020-12-22 08:44:19,885 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:44:19,885 INFO  L481      AbstractCegarLoop]: Abstraction has 311 states and 393 transitions.
[2020-12-22 08:44:19,885 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-12-22 08:44:19,885 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states and 393 transitions.
[2020-12-22 08:44:19,886 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2020-12-22 08:44:19,886 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:44:19,886 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:44:19,886 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2020-12-22 08:44:19,887 INFO  L429      AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:44:19,887 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:44:19,887 INFO  L82        PathProgramCache]: Analyzing trace with hash 370944031, now seen corresponding path program 1 times
[2020-12-22 08:44:19,887 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:44:19,888 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608153331]
[2020-12-22 08:44:19,888 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:44:19,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:44:21,339 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:44:21,339 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608153331]
[2020-12-22 08:44:21,340 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:44:21,340 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2020-12-22 08:44:21,340 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787593555]
[2020-12-22 08:44:21,341 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-12-22 08:44:21,341 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:44:21,341 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-12-22 08:44:21,342 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552
[2020-12-22 08:44:21,342 INFO  L87              Difference]: Start difference. First operand 311 states and 393 transitions. Second operand 24 states.
[2020-12-22 08:44:21,892 WARN  L197               SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93
[2020-12-22 08:44:22,288 WARN  L197               SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25
[2020-12-22 08:44:22,507 WARN  L197               SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33
[2020-12-22 08:44:22,737 WARN  L197               SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34
[2020-12-22 08:44:22,968 WARN  L197               SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35
[2020-12-22 08:44:23,394 WARN  L197               SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50
[2020-12-22 08:44:23,780 WARN  L197               SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58
[2020-12-22 08:44:24,231 WARN  L197               SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68
[2020-12-22 08:44:24,582 WARN  L197               SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55
[2020-12-22 08:44:24,922 WARN  L197               SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55
[2020-12-22 08:44:25,257 WARN  L197               SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54
[2020-12-22 08:44:25,680 WARN  L197               SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56
[2020-12-22 08:44:26,004 WARN  L197               SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52
[2020-12-22 08:44:31,558 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:44:31,558 INFO  L93              Difference]: Finished difference Result 1218 states and 1616 transitions.
[2020-12-22 08:44:31,559 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2020-12-22 08:44:31,559 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states. Word has length 66
[2020-12-22 08:44:31,560 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:44:31,564 INFO  L225             Difference]: With dead ends: 1218
[2020-12-22 08:44:31,564 INFO  L226             Difference]: Without dead ends: 1109
[2020-12-22 08:44:31,565 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=347, Invalid=1459, Unknown=0, NotChecked=0, Total=1806
[2020-12-22 08:44:31,567 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1109 states.
[2020-12-22 08:44:31,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 322.
[2020-12-22 08:44:31,653 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 322 states.
[2020-12-22 08:44:31,654 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 407 transitions.
[2020-12-22 08:44:31,654 INFO  L78                 Accepts]: Start accepts. Automaton has 322 states and 407 transitions. Word has length 66
[2020-12-22 08:44:31,654 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:44:31,654 INFO  L481      AbstractCegarLoop]: Abstraction has 322 states and 407 transitions.
[2020-12-22 08:44:31,654 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-12-22 08:44:31,655 INFO  L276                IsEmpty]: Start isEmpty. Operand 322 states and 407 transitions.
[2020-12-22 08:44:31,655 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2020-12-22 08:44:31,656 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:44:31,656 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:44:31,656 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2020-12-22 08:44:31,656 INFO  L429      AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:44:31,657 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:44:31,657 INFO  L82        PathProgramCache]: Analyzing trace with hash -1409573117, now seen corresponding path program 1 times
[2020-12-22 08:44:31,657 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:44:31,657 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218931153]
[2020-12-22 08:44:31,658 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:44:31,693 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:44:33,019 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:44:33,019 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218931153]
[2020-12-22 08:44:33,019 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:44:33,019 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2020-12-22 08:44:33,020 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626767001]
[2020-12-22 08:44:33,020 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-12-22 08:44:33,020 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:44:33,021 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-12-22 08:44:33,021 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552
[2020-12-22 08:44:33,021 INFO  L87              Difference]: Start difference. First operand 322 states and 407 transitions. Second operand 24 states.
[2020-12-22 08:44:33,548 WARN  L197               SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92
[2020-12-22 08:44:33,786 WARN  L197               SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26
[2020-12-22 08:44:33,948 WARN  L197               SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27
[2020-12-22 08:44:34,158 WARN  L197               SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35
[2020-12-22 08:44:34,390 WARN  L197               SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36
[2020-12-22 08:44:34,617 WARN  L197               SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35
[2020-12-22 08:44:35,034 WARN  L197               SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55
[2020-12-22 08:44:35,405 WARN  L197               SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65
[2020-12-22 08:44:35,818 WARN  L197               SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72
[2020-12-22 08:44:36,120 WARN  L197               SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54
[2020-12-22 08:44:36,427 WARN  L197               SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54
[2020-12-22 08:44:36,731 WARN  L197               SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51
[2020-12-22 08:44:37,085 WARN  L197               SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53
[2020-12-22 08:44:37,386 WARN  L197               SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49
[2020-12-22 08:44:37,606 WARN  L197               SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36
[2020-12-22 08:44:38,655 WARN  L197               SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38
[2020-12-22 08:44:39,178 WARN  L197               SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46
[2020-12-22 08:44:43,656 WARN  L197               SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40
[2020-12-22 08:44:44,522 WARN  L197               SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31
[2020-12-22 08:44:44,968 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:44:44,968 INFO  L93              Difference]: Finished difference Result 1479 states and 2039 transitions.
[2020-12-22 08:44:44,969 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2020-12-22 08:44:44,969 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states. Word has length 66
[2020-12-22 08:44:44,970 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:44:44,974 INFO  L225             Difference]: With dead ends: 1479
[2020-12-22 08:44:44,974 INFO  L226             Difference]: Without dead ends: 1367
[2020-12-22 08:44:44,975 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=388, Invalid=1774, Unknown=0, NotChecked=0, Total=2162
[2020-12-22 08:44:44,977 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1367 states.
[2020-12-22 08:44:45,034 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 327.
[2020-12-22 08:44:45,034 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 327 states.
[2020-12-22 08:44:45,035 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 413 transitions.
[2020-12-22 08:44:45,035 INFO  L78                 Accepts]: Start accepts. Automaton has 327 states and 413 transitions. Word has length 66
[2020-12-22 08:44:45,035 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:44:45,035 INFO  L481      AbstractCegarLoop]: Abstraction has 327 states and 413 transitions.
[2020-12-22 08:44:45,036 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-12-22 08:44:45,036 INFO  L276                IsEmpty]: Start isEmpty. Operand 327 states and 413 transitions.
[2020-12-22 08:44:45,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2020-12-22 08:44:45,036 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:44:45,036 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:44:45,037 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2020-12-22 08:44:45,037 INFO  L429      AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:44:45,037 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:44:45,037 INFO  L82        PathProgramCache]: Analyzing trace with hash -1856476640, now seen corresponding path program 1 times
[2020-12-22 08:44:45,037 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:44:45,037 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197057943]
[2020-12-22 08:44:45,037 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:44:45,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:44:46,685 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:44:46,686 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197057943]
[2020-12-22 08:44:46,686 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:44:46,686 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25
[2020-12-22 08:44:46,686 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571503294]
[2020-12-22 08:44:46,687 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-12-22 08:44:46,687 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:44:46,687 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-12-22 08:44:46,687 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600
[2020-12-22 08:44:46,688 INFO  L87              Difference]: Start difference. First operand 327 states and 413 transitions. Second operand 25 states.
[2020-12-22 08:44:47,424 WARN  L197               SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 113
[2020-12-22 08:44:48,090 WARN  L197               SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33
[2020-12-22 08:44:48,321 WARN  L197               SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34
[2020-12-22 08:44:48,600 WARN  L197               SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41
[2020-12-22 08:44:48,902 WARN  L197               SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42
[2020-12-22 08:44:49,196 WARN  L197               SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41
[2020-12-22 08:44:49,715 WARN  L197               SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59
[2020-12-22 08:44:50,154 WARN  L197               SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72
[2020-12-22 08:44:50,725 WARN  L197               SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85
[2020-12-22 08:44:51,151 WARN  L197               SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62
[2020-12-22 08:44:51,547 WARN  L197               SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62
[2020-12-22 08:44:51,977 WARN  L197               SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60
[2020-12-22 08:44:52,495 WARN  L197               SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62
[2020-12-22 08:44:52,919 WARN  L197               SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58
[2020-12-22 08:44:53,190 WARN  L197               SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42
[2020-12-22 08:44:53,546 WARN  L197               SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57
[2020-12-22 08:44:54,001 WARN  L197               SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59
[2020-12-22 08:44:54,415 WARN  L197               SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54
[2020-12-22 08:44:54,948 WARN  L197               SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51
[2020-12-22 08:44:55,241 WARN  L197               SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48
[2020-12-22 08:44:55,701 WARN  L197               SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50
[2020-12-22 08:44:56,132 WARN  L197               SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42
[2020-12-22 08:45:00,271 WARN  L197               SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26
[2020-12-22 08:45:01,047 WARN  L197               SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36
[2020-12-22 08:45:02,071 WARN  L197               SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44
[2020-12-22 08:45:02,904 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:45:02,904 INFO  L93              Difference]: Finished difference Result 1526 states and 2110 transitions.
[2020-12-22 08:45:02,905 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. 
[2020-12-22 08:45:02,905 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states. Word has length 66
[2020-12-22 08:45:02,905 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:45:02,910 INFO  L225             Difference]: With dead ends: 1526
[2020-12-22 08:45:02,910 INFO  L226             Difference]: Without dead ends: 1418
[2020-12-22 08:45:02,911 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=555, Invalid=2201, Unknown=0, NotChecked=0, Total=2756
[2020-12-22 08:45:02,913 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1418 states.
[2020-12-22 08:45:02,986 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 324.
[2020-12-22 08:45:02,986 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 324 states.
[2020-12-22 08:45:02,987 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 409 transitions.
[2020-12-22 08:45:02,987 INFO  L78                 Accepts]: Start accepts. Automaton has 324 states and 409 transitions. Word has length 66
[2020-12-22 08:45:02,987 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:45:02,987 INFO  L481      AbstractCegarLoop]: Abstraction has 324 states and 409 transitions.
[2020-12-22 08:45:02,987 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-12-22 08:45:02,988 INFO  L276                IsEmpty]: Start isEmpty. Operand 324 states and 409 transitions.
[2020-12-22 08:45:02,988 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2020-12-22 08:45:02,989 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:45:02,989 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:45:02,989 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2020-12-22 08:45:02,989 INFO  L429      AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:45:02,989 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:45:02,990 INFO  L82        PathProgramCache]: Analyzing trace with hash -1246346588, now seen corresponding path program 1 times
[2020-12-22 08:45:02,990 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:45:02,990 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878479150]
[2020-12-22 08:45:02,990 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:45:03,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:45:04,307 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:45:04,307 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878479150]
[2020-12-22 08:45:04,307 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:45:04,307 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2020-12-22 08:45:04,307 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954537962]
[2020-12-22 08:45:04,308 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-12-22 08:45:04,308 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:45:04,308 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-12-22 08:45:04,309 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506
[2020-12-22 08:45:04,309 INFO  L87              Difference]: Start difference. First operand 324 states and 409 transitions. Second operand 23 states.
[2020-12-22 08:45:04,821 WARN  L197               SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80
[2020-12-22 08:45:05,073 WARN  L197               SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26
[2020-12-22 08:45:05,245 WARN  L197               SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28
[2020-12-22 08:45:05,471 WARN  L197               SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35
[2020-12-22 08:45:05,743 WARN  L197               SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36
[2020-12-22 08:45:06,016 WARN  L197               SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36
[2020-12-22 08:45:06,466 WARN  L197               SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46
[2020-12-22 08:45:06,811 WARN  L197               SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52
[2020-12-22 08:45:07,224 WARN  L197               SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58
[2020-12-22 08:45:07,585 WARN  L197               SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53
[2020-12-22 08:45:07,936 WARN  L197               SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53
[2020-12-22 08:45:08,275 WARN  L197               SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50
[2020-12-22 08:45:08,675 WARN  L197               SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51
[2020-12-22 08:45:09,029 WARN  L197               SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48
[2020-12-22 08:45:09,380 WARN  L197               SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52
[2020-12-22 08:45:09,773 WARN  L197               SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51
[2020-12-22 08:45:10,147 WARN  L197               SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47
[2020-12-22 08:45:10,536 WARN  L197               SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32
[2020-12-22 08:45:11,176 WARN  L197               SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32
[2020-12-22 08:45:15,829 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:45:15,830 INFO  L93              Difference]: Finished difference Result 1055 states and 1399 transitions.
[2020-12-22 08:45:15,831 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2020-12-22 08:45:15,831 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states. Word has length 66
[2020-12-22 08:45:15,831 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:45:15,834 INFO  L225             Difference]: With dead ends: 1055
[2020-12-22 08:45:15,834 INFO  L226             Difference]: Without dead ends: 943
[2020-12-22 08:45:15,835 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722
[2020-12-22 08:45:15,836 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 943 states.
[2020-12-22 08:45:15,907 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 330.
[2020-12-22 08:45:15,907 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 330 states.
[2020-12-22 08:45:15,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 415 transitions.
[2020-12-22 08:45:15,908 INFO  L78                 Accepts]: Start accepts. Automaton has 330 states and 415 transitions. Word has length 66
[2020-12-22 08:45:15,908 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:45:15,908 INFO  L481      AbstractCegarLoop]: Abstraction has 330 states and 415 transitions.
[2020-12-22 08:45:15,908 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-12-22 08:45:15,908 INFO  L276                IsEmpty]: Start isEmpty. Operand 330 states and 415 transitions.
[2020-12-22 08:45:15,909 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2020-12-22 08:45:15,909 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:45:15,909 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:45:15,909 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2020-12-22 08:45:15,910 INFO  L429      AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:45:15,910 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:45:15,910 INFO  L82        PathProgramCache]: Analyzing trace with hash -1787778406, now seen corresponding path program 1 times
[2020-12-22 08:45:15,910 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:45:15,910 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344603828]
[2020-12-22 08:45:15,911 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:45:15,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:45:17,807 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:45:17,808 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344603828]
[2020-12-22 08:45:17,808 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:45:17,808 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2020-12-22 08:45:17,808 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077228951]
[2020-12-22 08:45:17,808 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-12-22 08:45:17,809 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:45:17,809 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-12-22 08:45:17,809 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552
[2020-12-22 08:45:17,810 INFO  L87              Difference]: Start difference. First operand 330 states and 415 transitions. Second operand 24 states.
[2020-12-22 08:45:18,430 WARN  L197               SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99
[2020-12-22 08:45:18,662 WARN  L197               SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21
[2020-12-22 08:45:18,870 WARN  L197               SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28
[2020-12-22 08:45:19,128 WARN  L197               SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30
[2020-12-22 08:45:19,414 WARN  L197               SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37
[2020-12-22 08:45:19,722 WARN  L197               SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38
[2020-12-22 08:45:20,046 WARN  L197               SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38
[2020-12-22 08:45:20,569 WARN  L197               SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56
[2020-12-22 08:45:21,047 WARN  L197               SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66
[2020-12-22 08:45:21,624 WARN  L197               SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79
[2020-12-22 08:45:22,065 WARN  L197               SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59
[2020-12-22 08:45:22,490 WARN  L197               SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59
[2020-12-22 08:45:25,700 WARN  L197               SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46
[2020-12-22 08:45:29,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:45:29,402 INFO  L93              Difference]: Finished difference Result 1091 states and 1437 transitions.
[2020-12-22 08:45:29,403 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2020-12-22 08:45:29,403 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states. Word has length 66
[2020-12-22 08:45:29,403 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:45:29,408 INFO  L225             Difference]: With dead ends: 1091
[2020-12-22 08:45:29,409 INFO  L226             Difference]: Without dead ends: 982
[2020-12-22 08:45:29,410 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=334, Invalid=1646, Unknown=0, NotChecked=0, Total=1980
[2020-12-22 08:45:29,412 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 982 states.
[2020-12-22 08:45:29,497 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 345.
[2020-12-22 08:45:29,497 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 345 states.
[2020-12-22 08:45:29,498 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 436 transitions.
[2020-12-22 08:45:29,498 INFO  L78                 Accepts]: Start accepts. Automaton has 345 states and 436 transitions. Word has length 66
[2020-12-22 08:45:29,498 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:45:29,498 INFO  L481      AbstractCegarLoop]: Abstraction has 345 states and 436 transitions.
[2020-12-22 08:45:29,498 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-12-22 08:45:29,499 INFO  L276                IsEmpty]: Start isEmpty. Operand 345 states and 436 transitions.
[2020-12-22 08:45:29,499 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2020-12-22 08:45:29,499 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:45:29,500 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:45:29,500 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2020-12-22 08:45:29,500 INFO  L429      AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:45:29,501 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:45:29,501 INFO  L82        PathProgramCache]: Analyzing trace with hash 1127331716, now seen corresponding path program 1 times
[2020-12-22 08:45:29,501 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:45:29,501 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698259616]
[2020-12-22 08:45:29,501 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:45:29,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:45:31,307 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:45:31,307 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698259616]
[2020-12-22 08:45:31,308 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:45:31,308 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24
[2020-12-22 08:45:31,308 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052802009]
[2020-12-22 08:45:31,308 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-12-22 08:45:31,308 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:45:31,309 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-12-22 08:45:31,309 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552
[2020-12-22 08:45:31,309 INFO  L87              Difference]: Start difference. First operand 345 states and 436 transitions. Second operand 24 states.
[2020-12-22 08:45:31,950 WARN  L197               SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98
[2020-12-22 08:45:32,421 WARN  L197               SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24
[2020-12-22 08:45:32,629 WARN  L197               SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26
[2020-12-22 08:45:32,889 WARN  L197               SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30
[2020-12-22 08:45:33,209 WARN  L197               SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38
[2020-12-22 08:45:33,548 WARN  L197               SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39
[2020-12-22 08:45:33,869 WARN  L197               SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38
[2020-12-22 08:45:34,420 WARN  L197               SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56
[2020-12-22 08:45:34,926 WARN  L197               SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70
[2020-12-22 08:45:35,517 WARN  L197               SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80
[2020-12-22 08:45:35,976 WARN  L197               SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59
[2020-12-22 08:45:36,408 WARN  L197               SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59
[2020-12-22 08:45:36,635 WARN  L197               SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34
[2020-12-22 08:45:36,911 WARN  L197               SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34
[2020-12-22 08:45:37,273 WARN  L197               SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32
[2020-12-22 08:45:37,510 WARN  L197               SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27
[2020-12-22 08:45:37,756 WARN  L197               SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27
[2020-12-22 08:45:38,117 WARN  L197               SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23
[2020-12-22 08:45:38,914 WARN  L197               SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23
[2020-12-22 08:45:40,057 WARN  L197               SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30
[2020-12-22 08:45:43,329 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:45:43,330 INFO  L93              Difference]: Finished difference Result 1128 states and 1471 transitions.
[2020-12-22 08:45:43,333 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-12-22 08:45:43,333 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states. Word has length 66
[2020-12-22 08:45:43,333 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:45:43,337 INFO  L225             Difference]: With dead ends: 1128
[2020-12-22 08:45:43,337 INFO  L226             Difference]: Without dead ends: 1124
[2020-12-22 08:45:43,338 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=372, Invalid=1790, Unknown=0, NotChecked=0, Total=2162
[2020-12-22 08:45:43,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1124 states.
[2020-12-22 08:45:43,415 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 355.
[2020-12-22 08:45:43,416 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 355 states.
[2020-12-22 08:45:43,416 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 450 transitions.
[2020-12-22 08:45:43,417 INFO  L78                 Accepts]: Start accepts. Automaton has 355 states and 450 transitions. Word has length 66
[2020-12-22 08:45:43,417 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:45:43,417 INFO  L481      AbstractCegarLoop]: Abstraction has 355 states and 450 transitions.
[2020-12-22 08:45:43,417 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 24 states.
[2020-12-22 08:45:43,417 INFO  L276                IsEmpty]: Start isEmpty. Operand 355 states and 450 transitions.
[2020-12-22 08:45:43,418 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2020-12-22 08:45:43,418 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:45:43,418 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:45:43,418 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2020-12-22 08:45:43,418 INFO  L429      AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:45:43,419 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:45:43,419 INFO  L82        PathProgramCache]: Analyzing trace with hash -653185432, now seen corresponding path program 1 times
[2020-12-22 08:45:43,419 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:45:43,419 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871040472]
[2020-12-22 08:45:43,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:45:43,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:45:45,024 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:45:45,024 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871040472]
[2020-12-22 08:45:45,024 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:45:45,024 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2020-12-22 08:45:45,024 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267895228]
[2020-12-22 08:45:45,025 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-12-22 08:45:45,025 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:45:45,025 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-12-22 08:45:45,026 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506
[2020-12-22 08:45:45,026 INFO  L87              Difference]: Start difference. First operand 355 states and 450 transitions. Second operand 23 states.
[2020-12-22 08:45:45,500 WARN  L197               SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76
[2020-12-22 08:45:45,931 WARN  L197               SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29
[2020-12-22 08:45:46,157 WARN  L197               SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30
[2020-12-22 08:45:46,437 WARN  L197               SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37
[2020-12-22 08:45:46,729 WARN  L197               SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38
[2020-12-22 08:45:47,028 WARN  L197               SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37
[2020-12-22 08:45:47,533 WARN  L197               SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40
[2020-12-22 08:45:47,936 WARN  L197               SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54
[2020-12-22 08:45:48,383 WARN  L197               SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60
[2020-12-22 08:45:48,792 WARN  L197               SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54
[2020-12-22 08:45:49,193 WARN  L197               SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54
[2020-12-22 08:45:49,462 WARN  L197               SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38
[2020-12-22 08:45:50,017 WARN  L197               SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 38
[2020-12-22 08:45:56,471 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:45:56,472 INFO  L93              Difference]: Finished difference Result 1070 states and 1419 transitions.
[2020-12-22 08:45:56,473 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-12-22 08:45:56,473 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states. Word has length 66
[2020-12-22 08:45:56,473 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:45:56,477 INFO  L225             Difference]: With dead ends: 1070
[2020-12-22 08:45:56,477 INFO  L226             Difference]: Without dead ends: 958
[2020-12-22 08:45:56,478 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=291, Invalid=1515, Unknown=0, NotChecked=0, Total=1806
[2020-12-22 08:45:56,479 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 958 states.
[2020-12-22 08:45:56,579 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 360.
[2020-12-22 08:45:56,579 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 360 states.
[2020-12-22 08:45:56,580 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 456 transitions.
[2020-12-22 08:45:56,580 INFO  L78                 Accepts]: Start accepts. Automaton has 360 states and 456 transitions. Word has length 66
[2020-12-22 08:45:56,581 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:45:56,581 INFO  L481      AbstractCegarLoop]: Abstraction has 360 states and 456 transitions.
[2020-12-22 08:45:56,581 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-12-22 08:45:56,581 INFO  L276                IsEmpty]: Start isEmpty. Operand 360 states and 456 transitions.
[2020-12-22 08:45:56,582 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:45:56,582 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:45:56,582 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:45:56,582 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2020-12-22 08:45:56,583 INFO  L429      AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:45:56,583 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:45:56,583 INFO  L82        PathProgramCache]: Analyzing trace with hash -670125992, now seen corresponding path program 1 times
[2020-12-22 08:45:56,583 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:45:56,583 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216780608]
[2020-12-22 08:45:56,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:45:56,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:45:56,905 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:45:56,905 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216780608]
[2020-12-22 08:45:56,905 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:45:56,905 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-12-22 08:45:56,906 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705683454]
[2020-12-22 08:45:56,906 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-12-22 08:45:56,907 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:45:56,907 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-12-22 08:45:56,907 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-12-22 08:45:56,907 INFO  L87              Difference]: Start difference. First operand 360 states and 456 transitions. Second operand 11 states.
[2020-12-22 08:45:57,041 WARN  L197               SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27
[2020-12-22 08:45:57,379 WARN  L197               SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31
[2020-12-22 08:45:57,818 WARN  L197               SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35
[2020-12-22 08:45:58,949 WARN  L197               SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27
[2020-12-22 08:45:59,426 WARN  L197               SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34
[2020-12-22 08:45:59,998 WARN  L197               SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30
[2020-12-22 08:46:01,625 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:46:01,625 INFO  L93              Difference]: Finished difference Result 1317 states and 1834 transitions.
[2020-12-22 08:46:01,626 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-12-22 08:46:01,627 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 67
[2020-12-22 08:46:01,627 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:46:01,631 INFO  L225             Difference]: With dead ends: 1317
[2020-12-22 08:46:01,631 INFO  L226             Difference]: Without dead ends: 1310
[2020-12-22 08:46:01,632 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992
[2020-12-22 08:46:01,633 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1310 states.
[2020-12-22 08:46:01,714 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 364.
[2020-12-22 08:46:01,714 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 364 states.
[2020-12-22 08:46:01,715 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 459 transitions.
[2020-12-22 08:46:01,715 INFO  L78                 Accepts]: Start accepts. Automaton has 364 states and 459 transitions. Word has length 67
[2020-12-22 08:46:01,715 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:46:01,715 INFO  L481      AbstractCegarLoop]: Abstraction has 364 states and 459 transitions.
[2020-12-22 08:46:01,715 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-12-22 08:46:01,715 INFO  L276                IsEmpty]: Start isEmpty. Operand 364 states and 459 transitions.
[2020-12-22 08:46:01,716 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:46:01,716 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:46:01,716 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:46:01,716 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2020-12-22 08:46:01,717 INFO  L429      AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:46:01,717 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:46:01,717 INFO  L82        PathProgramCache]: Analyzing trace with hash -1209536804, now seen corresponding path program 1 times
[2020-12-22 08:46:01,718 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:46:01,718 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221427157]
[2020-12-22 08:46:01,718 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:46:01,743 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:46:02,760 WARN  L197               SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25
[2020-12-22 08:46:02,925 WARN  L197               SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25
[2020-12-22 08:46:03,317 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:46:03,318 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221427157]
[2020-12-22 08:46:03,318 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:46:03,318 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2020-12-22 08:46:03,318 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59697775]
[2020-12-22 08:46:03,318 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-12-22 08:46:03,318 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:46:03,319 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-12-22 08:46:03,319 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342
[2020-12-22 08:46:03,319 INFO  L87              Difference]: Start difference. First operand 364 states and 459 transitions. Second operand 19 states.
[2020-12-22 08:46:03,713 WARN  L197               SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46
[2020-12-22 08:46:03,978 WARN  L197               SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29
[2020-12-22 08:46:04,338 WARN  L197               SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32
[2020-12-22 08:46:04,666 WARN  L197               SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35
[2020-12-22 08:46:05,048 WARN  L197               SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41
[2020-12-22 08:46:05,540 WARN  L197               SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48
[2020-12-22 08:46:06,078 WARN  L197               SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54
[2020-12-22 08:46:06,638 WARN  L197               SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59
[2020-12-22 08:46:07,172 WARN  L197               SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63
[2020-12-22 08:46:07,701 WARN  L197               SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63
[2020-12-22 08:46:08,209 WARN  L197               SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60
[2020-12-22 08:46:08,819 WARN  L197               SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65
[2020-12-22 08:46:09,297 WARN  L197               SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56
[2020-12-22 08:46:09,760 WARN  L197               SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52
[2020-12-22 08:46:10,307 WARN  L197               SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39
[2020-12-22 08:46:10,804 WARN  L197               SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44
[2020-12-22 08:46:11,326 WARN  L197               SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52
[2020-12-22 08:46:14,288 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:46:14,289 INFO  L93              Difference]: Finished difference Result 1030 states and 1365 transitions.
[2020-12-22 08:46:14,290 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2020-12-22 08:46:14,290 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states. Word has length 67
[2020-12-22 08:46:14,290 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:46:14,293 INFO  L225             Difference]: With dead ends: 1030
[2020-12-22 08:46:14,293 INFO  L226             Difference]: Without dead ends: 915
[2020-12-22 08:46:14,294 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260
[2020-12-22 08:46:14,302 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 915 states.
[2020-12-22 08:46:14,432 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 360.
[2020-12-22 08:46:14,432 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 360 states.
[2020-12-22 08:46:14,433 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 454 transitions.
[2020-12-22 08:46:14,433 INFO  L78                 Accepts]: Start accepts. Automaton has 360 states and 454 transitions. Word has length 67
[2020-12-22 08:46:14,433 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:46:14,433 INFO  L481      AbstractCegarLoop]: Abstraction has 360 states and 454 transitions.
[2020-12-22 08:46:14,433 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-12-22 08:46:14,434 INFO  L276                IsEmpty]: Start isEmpty. Operand 360 states and 454 transitions.
[2020-12-22 08:46:14,434 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:46:14,435 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:46:14,435 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:46:14,435 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2020-12-22 08:46:14,435 INFO  L429      AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:46:14,435 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:46:14,436 INFO  L82        PathProgramCache]: Analyzing trace with hash -1046520172, now seen corresponding path program 1 times
[2020-12-22 08:46:14,436 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:46:14,436 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462364319]
[2020-12-22 08:46:14,436 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:46:14,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:46:14,970 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:46:14,971 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462364319]
[2020-12-22 08:46:14,971 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:46:14,971 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-12-22 08:46:14,971 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983124373]
[2020-12-22 08:46:14,971 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-12-22 08:46:14,971 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:46:14,972 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-12-22 08:46:14,972 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2020-12-22 08:46:14,972 INFO  L87              Difference]: Start difference. First operand 360 states and 454 transitions. Second operand 11 states.
[2020-12-22 08:46:15,125 WARN  L197               SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20
[2020-12-22 08:46:15,292 WARN  L197               SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23
[2020-12-22 08:46:15,444 WARN  L197               SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25
[2020-12-22 08:46:15,662 WARN  L197               SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22
[2020-12-22 08:46:15,869 WARN  L197               SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28
[2020-12-22 08:46:16,064 WARN  L197               SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28
[2020-12-22 08:46:16,694 WARN  L197               SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28
[2020-12-22 08:46:17,212 WARN  L197               SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25
[2020-12-22 08:46:17,731 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:46:17,731 INFO  L93              Difference]: Finished difference Result 646 states and 847 transitions.
[2020-12-22 08:46:17,732 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-12-22 08:46:17,733 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 67
[2020-12-22 08:46:17,733 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:46:17,735 INFO  L225             Difference]: With dead ends: 646
[2020-12-22 08:46:17,735 INFO  L226             Difference]: Without dead ends: 537
[2020-12-22 08:46:17,735 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462
[2020-12-22 08:46:17,736 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 537 states.
[2020-12-22 08:46:17,836 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 350.
[2020-12-22 08:46:17,837 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 350 states.
[2020-12-22 08:46:17,837 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 442 transitions.
[2020-12-22 08:46:17,837 INFO  L78                 Accepts]: Start accepts. Automaton has 350 states and 442 transitions. Word has length 67
[2020-12-22 08:46:17,838 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:46:17,838 INFO  L481      AbstractCegarLoop]: Abstraction has 350 states and 442 transitions.
[2020-12-22 08:46:17,838 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-12-22 08:46:17,838 INFO  L276                IsEmpty]: Start isEmpty. Operand 350 states and 442 transitions.
[2020-12-22 08:46:17,839 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:46:17,839 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:46:17,839 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:46:17,839 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2020-12-22 08:46:17,839 INFO  L429      AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:46:17,840 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:46:17,840 INFO  L82        PathProgramCache]: Analyzing trace with hash -570162683, now seen corresponding path program 1 times
[2020-12-22 08:46:17,840 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:46:17,840 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303959115]
[2020-12-22 08:46:17,840 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:46:17,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:46:18,784 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:46:18,784 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303959115]
[2020-12-22 08:46:18,784 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:46:18,784 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-12-22 08:46:18,785 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984720852]
[2020-12-22 08:46:18,785 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-12-22 08:46:18,785 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:46:18,785 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-12-22 08:46:18,786 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156
[2020-12-22 08:46:18,786 INFO  L87              Difference]: Start difference. First operand 350 states and 442 transitions. Second operand 13 states.
[2020-12-22 08:46:19,376 WARN  L197               SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35
[2020-12-22 08:46:20,075 WARN  L197               SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 39
[2020-12-22 08:46:21,605 WARN  L197               SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30
[2020-12-22 08:46:22,028 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:46:22,028 INFO  L93              Difference]: Finished difference Result 793 states and 1054 transitions.
[2020-12-22 08:46:22,030 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-12-22 08:46:22,030 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 67
[2020-12-22 08:46:22,030 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:46:22,033 INFO  L225             Difference]: With dead ends: 793
[2020-12-22 08:46:22,033 INFO  L226             Difference]: Without dead ends: 681
[2020-12-22 08:46:22,034 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552
[2020-12-22 08:46:22,035 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 681 states.
[2020-12-22 08:46:22,137 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 343.
[2020-12-22 08:46:22,137 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 343 states.
[2020-12-22 08:46:22,138 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 433 transitions.
[2020-12-22 08:46:22,138 INFO  L78                 Accepts]: Start accepts. Automaton has 343 states and 433 transitions. Word has length 67
[2020-12-22 08:46:22,138 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:46:22,138 INFO  L481      AbstractCegarLoop]: Abstraction has 343 states and 433 transitions.
[2020-12-22 08:46:22,138 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-12-22 08:46:22,139 INFO  L276                IsEmpty]: Start isEmpty. Operand 343 states and 433 transitions.
[2020-12-22 08:46:22,139 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:46:22,140 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:46:22,140 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:46:22,140 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2020-12-22 08:46:22,140 INFO  L429      AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:46:22,140 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:46:22,140 INFO  L82        PathProgramCache]: Analyzing trace with hash 1813633064, now seen corresponding path program 1 times
[2020-12-22 08:46:22,141 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:46:22,141 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140824963]
[2020-12-22 08:46:22,141 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:46:22,166 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:46:22,438 WARN  L197               SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26
[2020-12-22 08:46:22,997 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:46:22,997 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140824963]
[2020-12-22 08:46:22,997 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:46:22,998 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2020-12-22 08:46:22,998 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468597509]
[2020-12-22 08:46:22,998 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-12-22 08:46:22,998 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:46:22,998 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-12-22 08:46:22,999 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132
[2020-12-22 08:46:22,999 INFO  L87              Difference]: Start difference. First operand 343 states and 433 transitions. Second operand 12 states.
[2020-12-22 08:46:23,222 WARN  L197               SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25
[2020-12-22 08:46:23,444 WARN  L197               SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27
[2020-12-22 08:46:23,655 WARN  L197               SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29
[2020-12-22 08:46:23,927 WARN  L197               SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23
[2020-12-22 08:46:24,216 WARN  L197               SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31
[2020-12-22 08:46:24,491 WARN  L197               SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31
[2020-12-22 08:46:24,953 WARN  L197               SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29
[2020-12-22 08:46:25,355 WARN  L197               SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26
[2020-12-22 08:46:26,650 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:46:26,650 INFO  L93              Difference]: Finished difference Result 829 states and 1133 transitions.
[2020-12-22 08:46:26,651 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-12-22 08:46:26,651 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 67
[2020-12-22 08:46:26,652 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:46:26,654 INFO  L225             Difference]: With dead ends: 829
[2020-12-22 08:46:26,654 INFO  L226             Difference]: Without dead ends: 724
[2020-12-22 08:46:26,655 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462
[2020-12-22 08:46:26,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 724 states.
[2020-12-22 08:46:26,749 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 343.
[2020-12-22 08:46:26,750 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 343 states.
[2020-12-22 08:46:26,750 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 432 transitions.
[2020-12-22 08:46:26,750 INFO  L78                 Accepts]: Start accepts. Automaton has 343 states and 432 transitions. Word has length 67
[2020-12-22 08:46:26,750 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:46:26,751 INFO  L481      AbstractCegarLoop]: Abstraction has 343 states and 432 transitions.
[2020-12-22 08:46:26,751 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-12-22 08:46:26,751 INFO  L276                IsEmpty]: Start isEmpty. Operand 343 states and 432 transitions.
[2020-12-22 08:46:26,751 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:46:26,751 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:46:26,752 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:46:26,752 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2020-12-22 08:46:26,752 INFO  L429      AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:46:26,752 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:46:26,752 INFO  L82        PathProgramCache]: Analyzing trace with hash -229278891, now seen corresponding path program 1 times
[2020-12-22 08:46:26,753 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:46:26,753 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429957367]
[2020-12-22 08:46:26,753 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:46:26,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:46:27,696 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:46:27,697 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429957367]
[2020-12-22 08:46:27,697 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:46:27,697 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2020-12-22 08:46:27,697 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913356697]
[2020-12-22 08:46:27,697 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-12-22 08:46:27,697 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:46:27,698 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-12-22 08:46:27,698 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210
[2020-12-22 08:46:27,698 INFO  L87              Difference]: Start difference. First operand 343 states and 432 transitions. Second operand 15 states.
[2020-12-22 08:46:27,926 WARN  L197               SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36
[2020-12-22 08:46:28,321 WARN  L197               SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23
[2020-12-22 08:46:28,502 WARN  L197               SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29
[2020-12-22 08:46:28,790 WARN  L197               SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38
[2020-12-22 08:46:29,168 WARN  L197               SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41
[2020-12-22 08:46:29,494 WARN  L197               SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49
[2020-12-22 08:46:29,817 WARN  L197               SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49
[2020-12-22 08:46:30,121 WARN  L197               SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46
[2020-12-22 08:46:30,404 WARN  L197               SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43
[2020-12-22 08:46:30,683 WARN  L197               SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42
[2020-12-22 08:46:30,874 WARN  L197               SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27
[2020-12-22 08:46:31,344 WARN  L197               SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42
[2020-12-22 08:46:31,525 WARN  L197               SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32
[2020-12-22 08:46:31,938 WARN  L197               SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32
[2020-12-22 08:46:34,068 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:46:34,068 INFO  L93              Difference]: Finished difference Result 847 states and 1098 transitions.
[2020-12-22 08:46:34,069 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2020-12-22 08:46:34,069 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 67
[2020-12-22 08:46:34,070 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:46:34,073 INFO  L225             Difference]: With dead ends: 847
[2020-12-22 08:46:34,073 INFO  L226             Difference]: Without dead ends: 735
[2020-12-22 08:46:34,074 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992
[2020-12-22 08:46:34,075 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 735 states.
[2020-12-22 08:46:34,223 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 336.
[2020-12-22 08:46:34,223 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 336 states.
[2020-12-22 08:46:34,224 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 424 transitions.
[2020-12-22 08:46:34,225 INFO  L78                 Accepts]: Start accepts. Automaton has 336 states and 424 transitions. Word has length 67
[2020-12-22 08:46:34,225 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:46:34,225 INFO  L481      AbstractCegarLoop]: Abstraction has 336 states and 424 transitions.
[2020-12-22 08:46:34,225 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-12-22 08:46:34,225 INFO  L276                IsEmpty]: Start isEmpty. Operand 336 states and 424 transitions.
[2020-12-22 08:46:34,226 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:46:34,226 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:46:34,226 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:46:34,226 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28
[2020-12-22 08:46:34,227 INFO  L429      AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:46:34,227 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:46:34,227 INFO  L82        PathProgramCache]: Analyzing trace with hash -444481636, now seen corresponding path program 1 times
[2020-12-22 08:46:34,227 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:46:34,228 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754120392]
[2020-12-22 08:46:34,228 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:46:34,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:46:34,651 WARN  L197               SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22
[2020-12-22 08:46:35,081 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:46:35,082 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754120392]
[2020-12-22 08:46:35,082 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:46:35,082 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-12-22 08:46:35,082 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776887973]
[2020-12-22 08:46:35,082 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-12-22 08:46:35,082 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:46:35,083 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-12-22 08:46:35,083 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156
[2020-12-22 08:46:35,083 INFO  L87              Difference]: Start difference. First operand 336 states and 424 transitions. Second operand 13 states.
[2020-12-22 08:46:35,340 WARN  L197               SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31
[2020-12-22 08:46:35,648 WARN  L197               SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28
[2020-12-22 08:46:35,855 WARN  L197               SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27
[2020-12-22 08:46:36,240 WARN  L197               SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31
[2020-12-22 08:46:36,759 WARN  L197               SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41
[2020-12-22 08:46:37,253 WARN  L197               SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41
[2020-12-22 08:46:37,714 WARN  L197               SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37
[2020-12-22 08:46:38,249 WARN  L197               SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34
[2020-12-22 08:46:39,658 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:46:39,658 INFO  L93              Difference]: Finished difference Result 999 states and 1367 transitions.
[2020-12-22 08:46:39,660 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-12-22 08:46:39,660 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 67
[2020-12-22 08:46:39,660 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:46:39,664 INFO  L225             Difference]: With dead ends: 999
[2020-12-22 08:46:39,664 INFO  L226             Difference]: Without dead ends: 983
[2020-12-22 08:46:39,665 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552
[2020-12-22 08:46:39,666 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 983 states.
[2020-12-22 08:46:39,777 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 320.
[2020-12-22 08:46:39,777 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 320 states.
[2020-12-22 08:46:39,778 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 407 transitions.
[2020-12-22 08:46:39,778 INFO  L78                 Accepts]: Start accepts. Automaton has 320 states and 407 transitions. Word has length 67
[2020-12-22 08:46:39,778 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:46:39,778 INFO  L481      AbstractCegarLoop]: Abstraction has 320 states and 407 transitions.
[2020-12-22 08:46:39,778 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-12-22 08:46:39,778 INFO  L276                IsEmpty]: Start isEmpty. Operand 320 states and 407 transitions.
[2020-12-22 08:46:39,778 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:46:39,778 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:46:39,779 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:46:39,779 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2020-12-22 08:46:39,779 INFO  L429      AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:46:39,779 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:46:39,779 INFO  L82        PathProgramCache]: Analyzing trace with hash -1074760314, now seen corresponding path program 1 times
[2020-12-22 08:46:39,779 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:46:39,779 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780272027]
[2020-12-22 08:46:39,779 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:46:39,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:46:40,091 WARN  L197               SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20
[2020-12-22 08:46:40,298 WARN  L197               SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14
[2020-12-22 08:46:40,573 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:46:40,573 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780272027]
[2020-12-22 08:46:40,573 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:46:40,573 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2020-12-22 08:46:40,573 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10021925]
[2020-12-22 08:46:40,574 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-12-22 08:46:40,574 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:46:40,574 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-12-22 08:46:40,574 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2020-12-22 08:46:40,574 INFO  L87              Difference]: Start difference. First operand 320 states and 407 transitions. Second operand 12 states.
[2020-12-22 08:46:40,740 WARN  L197               SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19
[2020-12-22 08:46:40,952 WARN  L197               SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 17
[2020-12-22 08:46:41,167 WARN  L197               SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21
[2020-12-22 08:46:41,438 WARN  L197               SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30
[2020-12-22 08:46:41,687 WARN  L197               SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30
[2020-12-22 08:46:42,035 WARN  L197               SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26
[2020-12-22 08:46:42,341 WARN  L197               SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24
[2020-12-22 08:46:43,066 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:46:43,066 INFO  L93              Difference]: Finished difference Result 616 states and 817 transitions.
[2020-12-22 08:46:43,068 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-12-22 08:46:43,068 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 67
[2020-12-22 08:46:43,068 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:46:43,071 INFO  L225             Difference]: With dead ends: 616
[2020-12-22 08:46:43,071 INFO  L226             Difference]: Without dead ends: 496
[2020-12-22 08:46:43,072 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380
[2020-12-22 08:46:43,073 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 496 states.
[2020-12-22 08:46:43,171 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 299.
[2020-12-22 08:46:43,171 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 299 states.
[2020-12-22 08:46:43,172 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 381 transitions.
[2020-12-22 08:46:43,172 INFO  L78                 Accepts]: Start accepts. Automaton has 299 states and 381 transitions. Word has length 67
[2020-12-22 08:46:43,172 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:46:43,172 INFO  L481      AbstractCegarLoop]: Abstraction has 299 states and 381 transitions.
[2020-12-22 08:46:43,172 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-12-22 08:46:43,172 INFO  L276                IsEmpty]: Start isEmpty. Operand 299 states and 381 transitions.
[2020-12-22 08:46:43,173 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:46:43,173 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:46:43,173 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:46:43,173 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30
[2020-12-22 08:46:43,173 INFO  L429      AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:46:43,174 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:46:43,174 INFO  L82        PathProgramCache]: Analyzing trace with hash -1673815221, now seen corresponding path program 1 times
[2020-12-22 08:46:43,174 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:46:43,174 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023220863]
[2020-12-22 08:46:43,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:46:43,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:46:43,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:46:43,968 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023220863]
[2020-12-22 08:46:43,969 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:46:43,969 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-12-22 08:46:43,969 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660255400]
[2020-12-22 08:46:43,969 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-12-22 08:46:43,969 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:46:43,970 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-12-22 08:46:43,970 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156
[2020-12-22 08:46:43,970 INFO  L87              Difference]: Start difference. First operand 299 states and 381 transitions. Second operand 13 states.
[2020-12-22 08:46:44,138 WARN  L197               SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25
[2020-12-22 08:46:44,468 WARN  L197               SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25
[2020-12-22 08:46:44,668 WARN  L197               SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27
[2020-12-22 08:46:44,909 WARN  L197               SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27
[2020-12-22 08:46:45,168 WARN  L197               SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36
[2020-12-22 08:46:45,429 WARN  L197               SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36
[2020-12-22 08:46:45,617 WARN  L197               SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27
[2020-12-22 08:46:46,007 WARN  L197               SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33
[2020-12-22 08:46:46,399 WARN  L197               SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30
[2020-12-22 08:46:47,246 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:46:47,246 INFO  L93              Difference]: Finished difference Result 692 states and 933 transitions.
[2020-12-22 08:46:47,248 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-12-22 08:46:47,248 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 67
[2020-12-22 08:46:47,248 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:46:47,251 INFO  L225             Difference]: With dead ends: 692
[2020-12-22 08:46:47,251 INFO  L226             Difference]: Without dead ends: 583
[2020-12-22 08:46:47,252 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506
[2020-12-22 08:46:47,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 583 states.
[2020-12-22 08:46:47,376 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 285.
[2020-12-22 08:46:47,376 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 285 states.
[2020-12-22 08:46:47,377 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 361 transitions.
[2020-12-22 08:46:47,377 INFO  L78                 Accepts]: Start accepts. Automaton has 285 states and 361 transitions. Word has length 67
[2020-12-22 08:46:47,378 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:46:47,378 INFO  L481      AbstractCegarLoop]: Abstraction has 285 states and 361 transitions.
[2020-12-22 08:46:47,378 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-12-22 08:46:47,378 INFO  L276                IsEmpty]: Start isEmpty. Operand 285 states and 361 transitions.
[2020-12-22 08:46:47,378 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:46:47,378 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:46:47,379 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:46:47,379 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31
[2020-12-22 08:46:47,379 INFO  L429      AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:46:47,379 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:46:47,379 INFO  L82        PathProgramCache]: Analyzing trace with hash 1241294901, now seen corresponding path program 1 times
[2020-12-22 08:46:47,379 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:46:47,380 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814623781]
[2020-12-22 08:46:47,380 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:46:47,407 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:46:47,779 WARN  L197               SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23
[2020-12-22 08:46:47,922 WARN  L197               SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23
[2020-12-22 08:46:48,080 WARN  L197               SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24
[2020-12-22 08:46:48,569 WARN  L197               SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18
[2020-12-22 08:46:48,755 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:46:48,755 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814623781]
[2020-12-22 08:46:48,755 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:46:48,756 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2020-12-22 08:46:48,756 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796321071]
[2020-12-22 08:46:48,756 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-12-22 08:46:48,756 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:46:48,756 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-12-22 08:46:48,757 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240
[2020-12-22 08:46:48,757 INFO  L87              Difference]: Start difference. First operand 285 states and 361 transitions. Second operand 16 states.
[2020-12-22 08:46:49,023 WARN  L197               SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26
[2020-12-22 08:46:49,564 WARN  L197               SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26
[2020-12-22 08:46:50,008 WARN  L197               SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29
[2020-12-22 08:46:50,395 WARN  L197               SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38
[2020-12-22 08:46:50,883 WARN  L197               SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45
[2020-12-22 08:46:51,262 WARN  L197               SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39
[2020-12-22 08:46:51,770 WARN  L197               SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39
[2020-12-22 08:46:52,170 WARN  L197               SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37
[2020-12-22 08:46:52,782 WARN  L197               SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46
[2020-12-22 08:46:53,116 WARN  L197               SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22
[2020-12-22 08:46:54,184 WARN  L197               SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35
[2020-12-22 08:46:55,175 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:46:55,176 INFO  L93              Difference]: Finished difference Result 632 states and 823 transitions.
[2020-12-22 08:46:55,177 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2020-12-22 08:46:55,177 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 67
[2020-12-22 08:46:55,177 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:46:55,180 INFO  L225             Difference]: With dead ends: 632
[2020-12-22 08:46:55,180 INFO  L226             Difference]: Without dead ends: 628
[2020-12-22 08:46:55,181 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870
[2020-12-22 08:46:55,181 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 628 states.
[2020-12-22 08:46:55,286 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 285.
[2020-12-22 08:46:55,286 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 285 states.
[2020-12-22 08:46:55,287 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 361 transitions.
[2020-12-22 08:46:55,287 INFO  L78                 Accepts]: Start accepts. Automaton has 285 states and 361 transitions. Word has length 67
[2020-12-22 08:46:55,287 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:46:55,287 INFO  L481      AbstractCegarLoop]: Abstraction has 285 states and 361 transitions.
[2020-12-22 08:46:55,287 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-12-22 08:46:55,287 INFO  L276                IsEmpty]: Start isEmpty. Operand 285 states and 361 transitions.
[2020-12-22 08:46:55,288 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:46:55,288 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:46:55,288 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:46:55,288 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32
[2020-12-22 08:46:55,289 INFO  L429      AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:46:55,289 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:46:55,289 INFO  L82        PathProgramCache]: Analyzing trace with hash -539222247, now seen corresponding path program 1 times
[2020-12-22 08:46:55,289 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:46:55,289 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139450044]
[2020-12-22 08:46:55,289 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:46:55,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:46:55,758 WARN  L197               SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26
[2020-12-22 08:46:55,893 WARN  L197               SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24
[2020-12-22 08:46:56,055 WARN  L197               SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26
[2020-12-22 08:46:56,251 WARN  L197               SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20
[2020-12-22 08:46:56,480 WARN  L197               SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27
[2020-12-22 08:46:56,650 WARN  L197               SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19
[2020-12-22 08:46:56,821 WARN  L197               SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19
[2020-12-22 08:46:56,996 WARN  L197               SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 17
[2020-12-22 08:46:57,346 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:46:57,346 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139450044]
[2020-12-22 08:46:57,346 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:46:57,346 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2020-12-22 08:46:57,346 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900288896]
[2020-12-22 08:46:57,347 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-12-22 08:46:57,347 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:46:57,347 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-12-22 08:46:57,348 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342
[2020-12-22 08:46:57,348 INFO  L87              Difference]: Start difference. First operand 285 states and 361 transitions. Second operand 19 states.
[2020-12-22 08:46:57,652 WARN  L197               SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34
[2020-12-22 08:46:57,889 WARN  L197               SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27
[2020-12-22 08:46:58,112 WARN  L197               SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29
[2020-12-22 08:46:58,397 WARN  L197               SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32
[2020-12-22 08:46:58,688 WARN  L197               SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34
[2020-12-22 08:46:59,026 WARN  L197               SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36
[2020-12-22 08:46:59,564 WARN  L197               SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46
[2020-12-22 08:47:00,066 WARN  L197               SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54
[2020-12-22 08:47:00,496 WARN  L197               SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50
[2020-12-22 08:47:00,913 WARN  L197               SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50
[2020-12-22 08:47:01,416 WARN  L197               SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53
[2020-12-22 08:47:01,970 WARN  L197               SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45
[2020-12-22 08:47:02,567 WARN  L197               SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43
[2020-12-22 08:47:02,932 WARN  L197               SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39
[2020-12-22 08:47:03,421 WARN  L197               SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39
[2020-12-22 08:47:06,544 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:47:06,544 INFO  L93              Difference]: Finished difference Result 866 states and 1165 transitions.
[2020-12-22 08:47:06,545 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2020-12-22 08:47:06,545 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states. Word has length 67
[2020-12-22 08:47:06,546 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:47:06,549 INFO  L225             Difference]: With dead ends: 866
[2020-12-22 08:47:06,549 INFO  L226             Difference]: Without dead ends: 754
[2020-12-22 08:47:06,550 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190
[2020-12-22 08:47:06,551 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 754 states.
[2020-12-22 08:47:06,676 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 270.
[2020-12-22 08:47:06,676 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 270 states.
[2020-12-22 08:47:06,677 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 340 transitions.
[2020-12-22 08:47:06,677 INFO  L78                 Accepts]: Start accepts. Automaton has 270 states and 340 transitions. Word has length 67
[2020-12-22 08:47:06,677 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:47:06,677 INFO  L481      AbstractCegarLoop]: Abstraction has 270 states and 340 transitions.
[2020-12-22 08:47:06,677 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-12-22 08:47:06,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 270 states and 340 transitions.
[2020-12-22 08:47:06,678 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:47:06,678 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:47:06,678 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:47:06,678 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33
[2020-12-22 08:47:06,678 INFO  L429      AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:47:06,679 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:47:06,679 INFO  L82        PathProgramCache]: Analyzing trace with hash 1128954968, now seen corresponding path program 1 times
[2020-12-22 08:47:06,679 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:47:06,679 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45884468]
[2020-12-22 08:47:06,679 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:47:06,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:47:06,879 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:47:06,879 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45884468]
[2020-12-22 08:47:06,879 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:47:06,880 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-12-22 08:47:06,880 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191839513]
[2020-12-22 08:47:06,880 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-12-22 08:47:06,880 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:47:06,880 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-12-22 08:47:06,881 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2020-12-22 08:47:06,881 INFO  L87              Difference]: Start difference. First operand 270 states and 340 transitions. Second operand 9 states.
[2020-12-22 08:47:08,602 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:47:08,602 INFO  L93              Difference]: Finished difference Result 430 states and 553 transitions.
[2020-12-22 08:47:08,604 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-12-22 08:47:08,604 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 67
[2020-12-22 08:47:08,604 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:47:08,606 INFO  L225             Difference]: With dead ends: 430
[2020-12-22 08:47:08,607 INFO  L226             Difference]: Without dead ends: 423
[2020-12-22 08:47:08,607 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342
[2020-12-22 08:47:08,608 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 423 states.
[2020-12-22 08:47:08,724 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 270.
[2020-12-22 08:47:08,724 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 270 states.
[2020-12-22 08:47:08,725 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 339 transitions.
[2020-12-22 08:47:08,725 INFO  L78                 Accepts]: Start accepts. Automaton has 270 states and 339 transitions. Word has length 67
[2020-12-22 08:47:08,725 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:47:08,725 INFO  L481      AbstractCegarLoop]: Abstraction has 270 states and 339 transitions.
[2020-12-22 08:47:08,725 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-12-22 08:47:08,725 INFO  L276                IsEmpty]: Start isEmpty. Operand 270 states and 339 transitions.
[2020-12-22 08:47:08,726 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:47:08,726 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:47:08,726 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:47:08,726 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34
[2020-12-22 08:47:08,726 INFO  L429      AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:47:08,726 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:47:08,727 INFO  L82        PathProgramCache]: Analyzing trace with hash -710008920, now seen corresponding path program 1 times
[2020-12-22 08:47:08,727 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:47:08,727 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258701201]
[2020-12-22 08:47:08,727 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:47:08,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:47:09,078 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:47:09,079 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258701201]
[2020-12-22 08:47:09,079 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:47:09,079 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-12-22 08:47:09,080 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911466124]
[2020-12-22 08:47:09,080 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-12-22 08:47:09,080 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:47:09,080 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-12-22 08:47:09,080 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-12-22 08:47:09,080 INFO  L87              Difference]: Start difference. First operand 270 states and 339 transitions. Second operand 11 states.
[2020-12-22 08:47:09,240 WARN  L197               SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27
[2020-12-22 08:47:09,612 WARN  L197               SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31
[2020-12-22 08:47:09,786 WARN  L197               SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27
[2020-12-22 08:47:10,119 WARN  L197               SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35
[2020-12-22 08:47:10,613 WARN  L197               SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24
[2020-12-22 08:47:10,967 WARN  L197               SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27
[2020-12-22 08:47:11,570 WARN  L197               SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31
[2020-12-22 08:47:11,777 WARN  L197               SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34
[2020-12-22 08:47:12,090 WARN  L197               SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34
[2020-12-22 08:47:12,568 WARN  L197               SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30
[2020-12-22 08:47:13,693 WARN  L197               SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30
[2020-12-22 08:47:14,069 WARN  L197               SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27
[2020-12-22 08:47:14,220 WARN  L197               SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23
[2020-12-22 08:47:15,877 WARN  L197               SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24
[2020-12-22 08:47:17,276 WARN  L197               SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27
[2020-12-22 08:47:17,467 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:47:17,467 INFO  L93              Difference]: Finished difference Result 1816 states and 2576 transitions.
[2020-12-22 08:47:17,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2020-12-22 08:47:17,469 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 67
[2020-12-22 08:47:17,469 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:47:17,472 INFO  L225             Difference]: With dead ends: 1816
[2020-12-22 08:47:17,472 INFO  L226             Difference]: Without dead ends: 1686
[2020-12-22 08:47:17,473 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560
[2020-12-22 08:47:17,474 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1686 states.
[2020-12-22 08:47:17,599 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 274.
[2020-12-22 08:47:17,600 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 274 states.
[2020-12-22 08:47:17,601 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 343 transitions.
[2020-12-22 08:47:17,601 INFO  L78                 Accepts]: Start accepts. Automaton has 274 states and 343 transitions. Word has length 67
[2020-12-22 08:47:17,601 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:47:17,601 INFO  L481      AbstractCegarLoop]: Abstraction has 274 states and 343 transitions.
[2020-12-22 08:47:17,601 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-12-22 08:47:17,601 INFO  L276                IsEmpty]: Start isEmpty. Operand 274 states and 343 transitions.
[2020-12-22 08:47:17,602 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:47:17,602 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:47:17,602 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:47:17,602 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35
[2020-12-22 08:47:17,602 INFO  L429      AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:47:17,603 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:47:17,603 INFO  L82        PathProgramCache]: Analyzing trace with hash 1303055616, now seen corresponding path program 1 times
[2020-12-22 08:47:17,603 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:47:17,603 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167377224]
[2020-12-22 08:47:17,603 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:47:17,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:47:17,986 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:47:17,986 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167377224]
[2020-12-22 08:47:17,986 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:47:17,986 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-12-22 08:47:17,987 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093126054]
[2020-12-22 08:47:17,987 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-12-22 08:47:17,987 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:47:17,988 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-12-22 08:47:17,988 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-12-22 08:47:17,988 INFO  L87              Difference]: Start difference. First operand 274 states and 343 transitions. Second operand 11 states.
[2020-12-22 08:47:18,128 WARN  L197               SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27
[2020-12-22 08:47:18,479 WARN  L197               SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31
[2020-12-22 08:47:18,646 WARN  L197               SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27
[2020-12-22 08:47:19,008 WARN  L197               SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35
[2020-12-22 08:47:19,525 WARN  L197               SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24
[2020-12-22 08:47:20,051 WARN  L197               SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27
[2020-12-22 08:47:20,527 WARN  L197               SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34
[2020-12-22 08:47:21,982 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:47:21,982 INFO  L93              Difference]: Finished difference Result 717 states and 968 transitions.
[2020-12-22 08:47:21,984 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-12-22 08:47:21,984 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 67
[2020-12-22 08:47:21,984 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:47:21,985 INFO  L225             Difference]: With dead ends: 717
[2020-12-22 08:47:21,985 INFO  L226             Difference]: Without dead ends: 710
[2020-12-22 08:47:21,986 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756
[2020-12-22 08:47:21,987 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 710 states.
[2020-12-22 08:47:22,110 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 274.
[2020-12-22 08:47:22,110 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 274 states.
[2020-12-22 08:47:22,111 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 342 transitions.
[2020-12-22 08:47:22,111 INFO  L78                 Accepts]: Start accepts. Automaton has 274 states and 342 transitions. Word has length 67
[2020-12-22 08:47:22,111 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:47:22,111 INFO  L481      AbstractCegarLoop]: Abstraction has 274 states and 342 transitions.
[2020-12-22 08:47:22,111 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-12-22 08:47:22,111 INFO  L276                IsEmpty]: Start isEmpty. Operand 274 states and 342 transitions.
[2020-12-22 08:47:22,112 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:47:22,112 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:47:22,112 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:47:22,112 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36
[2020-12-22 08:47:22,112 INFO  L429      AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:47:22,113 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:47:22,113 INFO  L82        PathProgramCache]: Analyzing trace with hash 926661436, now seen corresponding path program 1 times
[2020-12-22 08:47:22,113 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:47:22,113 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640755395]
[2020-12-22 08:47:22,113 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:47:22,138 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:47:22,601 WARN  L197               SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29
[2020-12-22 08:47:22,785 WARN  L197               SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30
[2020-12-22 08:47:24,048 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:47:24,048 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640755395]
[2020-12-22 08:47:24,048 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:47:24,048 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20
[2020-12-22 08:47:24,048 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404492532]
[2020-12-22 08:47:24,049 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-12-22 08:47:24,049 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:47:24,049 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-12-22 08:47:24,050 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380
[2020-12-22 08:47:24,050 INFO  L87              Difference]: Start difference. First operand 274 states and 342 transitions. Second operand 20 states.
[2020-12-22 08:47:24,422 WARN  L197               SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38
[2020-12-22 08:47:24,800 WARN  L197               SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21
[2020-12-22 08:47:25,065 WARN  L197               SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23
[2020-12-22 08:47:25,448 WARN  L197               SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38
[2020-12-22 08:47:25,853 WARN  L197               SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40
[2020-12-22 08:47:26,410 WARN  L197               SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40
[2020-12-22 08:47:26,839 WARN  L197               SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43
[2020-12-22 08:47:27,393 WARN  L197               SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56
[2020-12-22 08:47:27,937 WARN  L197               SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57
[2020-12-22 08:47:28,467 WARN  L197               SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57
[2020-12-22 08:47:29,086 WARN  L197               SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60
[2020-12-22 08:47:29,465 WARN  L197               SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30
[2020-12-22 08:47:30,091 WARN  L197               SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54
[2020-12-22 08:47:30,630 WARN  L197               SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44
[2020-12-22 08:47:31,176 WARN  L197               SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57
[2020-12-22 08:47:32,229 WARN  L197               SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46
[2020-12-22 08:47:32,887 WARN  L197               SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46
[2020-12-22 08:47:33,514 WARN  L197               SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30
[2020-12-22 08:47:33,889 WARN  L197               SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43
[2020-12-22 08:47:35,778 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:47:35,779 INFO  L93              Difference]: Finished difference Result 701 states and 909 transitions.
[2020-12-22 08:47:35,780 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-12-22 08:47:35,781 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states. Word has length 67
[2020-12-22 08:47:35,781 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:47:35,782 INFO  L225             Difference]: With dead ends: 701
[2020-12-22 08:47:35,782 INFO  L226             Difference]: Without dead ends: 697
[2020-12-22 08:47:35,783 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=334, Invalid=1226, Unknown=0, NotChecked=0, Total=1560
[2020-12-22 08:47:35,784 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 697 states.
[2020-12-22 08:47:35,916 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 288.
[2020-12-22 08:47:35,917 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 288 states.
[2020-12-22 08:47:35,917 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 361 transitions.
[2020-12-22 08:47:35,917 INFO  L78                 Accepts]: Start accepts. Automaton has 288 states and 361 transitions. Word has length 67
[2020-12-22 08:47:35,918 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:47:35,918 INFO  L481      AbstractCegarLoop]: Abstraction has 288 states and 361 transitions.
[2020-12-22 08:47:35,918 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-12-22 08:47:35,918 INFO  L276                IsEmpty]: Start isEmpty. Operand 288 states and 361 transitions.
[2020-12-22 08:47:35,918 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2020-12-22 08:47:35,918 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:47:35,918 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:47:35,918 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37
[2020-12-22 08:47:35,918 INFO  L429      AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:47:35,919 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:47:35,919 INFO  L82        PathProgramCache]: Analyzing trace with hash 763644804, now seen corresponding path program 1 times
[2020-12-22 08:47:35,919 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:47:35,919 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137234575]
[2020-12-22 08:47:35,919 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:47:35,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:47:36,224 WARN  L197               SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21
[2020-12-22 08:47:36,368 WARN  L197               SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20
[2020-12-22 08:47:36,525 WARN  L197               SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22
[2020-12-22 08:47:37,101 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:47:37,101 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137234575]
[2020-12-22 08:47:37,101 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:47:37,101 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2020-12-22 08:47:37,102 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862798384]
[2020-12-22 08:47:37,102 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-12-22 08:47:37,102 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:47:37,102 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-12-22 08:47:37,102 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182
[2020-12-22 08:47:37,103 INFO  L87              Difference]: Start difference. First operand 288 states and 361 transitions. Second operand 14 states.
[2020-12-22 08:47:37,299 WARN  L197               SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21
[2020-12-22 08:47:37,596 WARN  L197               SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23
[2020-12-22 08:47:37,781 WARN  L197               SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20
[2020-12-22 08:47:38,008 WARN  L197               SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23
[2020-12-22 08:47:38,391 WARN  L197               SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37
[2020-12-22 08:47:38,736 WARN  L197               SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36
[2020-12-22 08:47:39,050 WARN  L197               SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36
[2020-12-22 08:47:39,359 WARN  L197               SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35
[2020-12-22 08:47:39,791 WARN  L197               SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42
[2020-12-22 08:47:40,582 WARN  L197               SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29
[2020-12-22 08:47:42,006 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:47:42,007 INFO  L93              Difference]: Finished difference Result 989 states and 1341 transitions.
[2020-12-22 08:47:42,008 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-12-22 08:47:42,008 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 67
[2020-12-22 08:47:42,009 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:47:42,010 INFO  L225             Difference]: With dead ends: 989
[2020-12-22 08:47:42,010 INFO  L226             Difference]: Without dead ends: 957
[2020-12-22 08:47:42,011 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756
[2020-12-22 08:47:42,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 957 states.
[2020-12-22 08:47:42,142 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 280.
[2020-12-22 08:47:42,142 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 280 states.
[2020-12-22 08:47:42,142 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 349 transitions.
[2020-12-22 08:47:42,142 INFO  L78                 Accepts]: Start accepts. Automaton has 280 states and 349 transitions. Word has length 67
[2020-12-22 08:47:42,143 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:47:42,143 INFO  L481      AbstractCegarLoop]: Abstraction has 280 states and 349 transitions.
[2020-12-22 08:47:42,143 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-12-22 08:47:42,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 280 states and 349 transitions.
[2020-12-22 08:47:42,143 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2020-12-22 08:47:42,143 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:47:42,143 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:47:42,143 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38
[2020-12-22 08:47:42,144 INFO  L429      AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:47:42,144 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:47:42,144 INFO  L82        PathProgramCache]: Analyzing trace with hash -1661843325, now seen corresponding path program 1 times
[2020-12-22 08:47:42,144 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:47:42,144 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288623945]
[2020-12-22 08:47:42,144 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:47:42,161 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:47:42,376 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:47:42,376 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288623945]
[2020-12-22 08:47:42,376 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:47:42,376 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-12-22 08:47:42,377 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449193021]
[2020-12-22 08:47:42,377 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-12-22 08:47:42,377 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:47:42,377 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-12-22 08:47:42,378 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2020-12-22 08:47:42,378 INFO  L87              Difference]: Start difference. First operand 280 states and 349 transitions. Second operand 9 states.
[2020-12-22 08:47:44,248 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-12-22 08:47:44,249 INFO  L93              Difference]: Finished difference Result 440 states and 562 transitions.
[2020-12-22 08:47:44,250 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-12-22 08:47:44,250 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 68
[2020-12-22 08:47:44,251 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-12-22 08:47:44,251 INFO  L225             Difference]: With dead ends: 440
[2020-12-22 08:47:44,251 INFO  L226             Difference]: Without dead ends: 433
[2020-12-22 08:47:44,252 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380
[2020-12-22 08:47:44,252 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 433 states.
[2020-12-22 08:47:44,378 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 276.
[2020-12-22 08:47:44,378 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 276 states.
[2020-12-22 08:47:44,379 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 344 transitions.
[2020-12-22 08:47:44,379 INFO  L78                 Accepts]: Start accepts. Automaton has 276 states and 344 transitions. Word has length 68
[2020-12-22 08:47:44,379 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-12-22 08:47:44,379 INFO  L481      AbstractCegarLoop]: Abstraction has 276 states and 344 transitions.
[2020-12-22 08:47:44,379 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-12-22 08:47:44,379 INFO  L276                IsEmpty]: Start isEmpty. Operand 276 states and 344 transitions.
[2020-12-22 08:47:44,380 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2020-12-22 08:47:44,380 INFO  L414         BasicCegarLoop]: Found error trace
[2020-12-22 08:47:44,380 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-12-22 08:47:44,380 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39
[2020-12-22 08:47:44,380 INFO  L429      AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-12-22 08:47:44,380 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-12-22 08:47:44,380 INFO  L82        PathProgramCache]: Analyzing trace with hash 164552875, now seen corresponding path program 1 times
[2020-12-22 08:47:44,380 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-12-22 08:47:44,381 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88070754]
[2020-12-22 08:47:44,381 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-12-22 08:47:44,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-12-22 08:47:46,283 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-12-22 08:47:46,283 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88070754]
[2020-12-22 08:47:46,283 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-12-22 08:47:46,283 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2020-12-22 08:47:46,283 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970126255]
[2020-12-22 08:47:46,284 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-12-22 08:47:46,284 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-12-22 08:47:46,284 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-12-22 08:47:46,284 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506
[2020-12-22 08:47:46,284 INFO  L87              Difference]: Start difference. First operand 276 states and 344 transitions. Second operand 23 states.
[2020-12-22 08:47:46,962 WARN  L197               SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88
[2020-12-22 08:47:47,311 WARN  L197               SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25
[2020-12-22 08:47:47,628 WARN  L197               SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31