/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c


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


This is Ultimate 0.1.25-b09bf87
[2020-10-16 11:32:46,614 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-16 11:32:46,619 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-16 11:32:46,656 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-16 11:32:46,656 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-16 11:32:46,657 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-16 11:32:46,659 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-10-16 11:32:46,663 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-16 11:32:46,665 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2020-10-16 11:32:46,668 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-16 11:32:46,669 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-16 11:32:46,670 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-16 11:32:46,672 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-16 11:32:46,674 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-16 11:32:46,676 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-16 11:32:46,677 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-16 11:32:46,678 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-16 11:32:46,679 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-16 11:32:46,681 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-16 11:32:46,681 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-16 11:32:46,682 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-16 11:32:46,683 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-16 11:32:46,683 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-16 11:32:46,684 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-16 11:32:46,684 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-10-16 11:32:46,687 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2020-10-16 11:32:46,689 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-16 11:32:46,690 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-16 11:32:46,691 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-16 11:32:46,715 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-16 11:32:46,715 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-16 11:32:46,716 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-16 11:32:46,716 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-16 11:32:46,717 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-16 11:32:46,717 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-16 11:32:46,717 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-16 11:32:46,717 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-16 11:32:46,717 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-16 11:32:46,718 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-16 11:32:46,718 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-16 11:32:46,718 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-16 11:32:46,718 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-16 11:32:46,718 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-16 11:32:46,719 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-16 11:32:46,719 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-16 11:32:46,719 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-16 11:32:46,719 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-16 11:32:46,719 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-16 11:32:46,720 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-16 11:32:46,720 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-16 11:32:46,720 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-16 11:32:46,720 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-16 11:32:46,720 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-16 11:32:46,721 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-16 11:32:46,721 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-16 11:32:46,721 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-16 11:32:46,721 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-16 11:32:46,721 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-16 11:32:46,721 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2020-10-16 11:32:47,034 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-16 11:32:47,047 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-16 11:32:47,051 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-16 11:32:47,052 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-16 11:32:47,053 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-16 11:32:47,054 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c
[2020-10-16 11:32:47,118 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f09f6e83/4b48d25bdbb84f7b97f2c567547f6d8b/FLAG5af37ca05
[2020-10-16 11:32:47,568 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-16 11:32:47,569 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/concurrent/pthreads/forkMultipleTimes.c
[2020-10-16 11:32:47,569 WARN  L117   ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available.
[2020-10-16 11:32:47,570 WARN  L117   ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available.
[2020-10-16 11:32:47,610 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f09f6e83/4b48d25bdbb84f7b97f2c567547f6d8b/FLAG5af37ca05
[2020-10-16 11:32:47,961 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f09f6e83/4b48d25bdbb84f7b97f2c567547f6d8b
[2020-10-16 11:32:47,970 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-16 11:32:47,972 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2020-10-16 11:32:47,973 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-16 11:32:47,973 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-16 11:32:47,977 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-16 11:32:47,978 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:32:47" (1/1) ...
[2020-10-16 11:32:47,981 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d1de5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:47, skipping insertion in model container
[2020-10-16 11:32:47,981 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:32:47" (1/1) ...
[2020-10-16 11:32:47,989 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-16 11:32:48,007 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-16 11:32:48,175 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-16 11:32:48,188 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-16 11:32:48,292 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-16 11:32:48,311 INFO  L208         MainTranslator]: Completed translation
[2020-10-16 11:32:48,313 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48 WrapperNode
[2020-10-16 11:32:48,313 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-16 11:32:48,315 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2020-10-16 11:32:48,315 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2020-10-16 11:32:48,315 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2020-10-16 11:32:48,324 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ...
[2020-10-16 11:32:48,334 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ...
[2020-10-16 11:32:48,353 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2020-10-16 11:32:48,353 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-16 11:32:48,353 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-16 11:32:48,353 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-16 11:32:48,361 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ...
[2020-10-16 11:32:48,361 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ...
[2020-10-16 11:32:48,363 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ...
[2020-10-16 11:32:48,363 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ...
[2020-10-16 11:32:48,368 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ...
[2020-10-16 11:32:48,369 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ...
[2020-10-16 11:32:48,371 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ...
[2020-10-16 11:32:48,373 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-16 11:32:48,373 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-16 11:32:48,373 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-16 11:32:48,374 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-16 11:32:48,375 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-10-16 11:32:48,438 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-16 11:32:48,438 INFO  L130     BoogieDeclarations]: Found specification of procedure foo
[2020-10-16 11:32:48,438 INFO  L138     BoogieDeclarations]: Found implementation of procedure foo
[2020-10-16 11:32:48,438 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-16 11:32:48,438 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-16 11:32:48,439 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-16 11:32:48,439 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-16 11:32:48,439 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-16 11:32:48,439 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-16 11:32:48,441 WARN  L208             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2020-10-16 11:32:48,694 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-16 11:32:48,695 INFO  L298             CfgBuilder]: Removed 4 assume(true) statements.
[2020-10-16 11:32:48,697 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:32:48 BoogieIcfgContainer
[2020-10-16 11:32:48,698 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-16 11:32:48,699 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-16 11:32:48,699 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-16 11:32:48,704 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-16 11:32:48,704 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:32:47" (1/3) ...
[2020-10-16 11:32:48,706 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466073fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:32:48, skipping insertion in model container
[2020-10-16 11:32:48,709 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:32:48" (2/3) ...
[2020-10-16 11:32:48,710 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466073fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:32:48, skipping insertion in model container
[2020-10-16 11:32:48,710 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:32:48" (3/3) ...
[2020-10-16 11:32:48,716 INFO  L111   eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c
[2020-10-16 11:32:48,746 WARN  L153   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2020-10-16 11:32:48,748 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-10-16 11:32:48,767 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-16 11:32:48,770 INFO  L348   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2020-10-16 11:32:48,819 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,819 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,820 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,820 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,820 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,820 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,821 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,821 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,821 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,822 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,822 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,822 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,822 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,823 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,823 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,823 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,823 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,824 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,824 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,824 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,824 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,825 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,825 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,825 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,826 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,826 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,826 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,826 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,827 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,827 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,827 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,827 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,828 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,828 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,828 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,828 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,829 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,829 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,829 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,830 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,830 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,830 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,830 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,831 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,831 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,835 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,836 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,836 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,836 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,836 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,837 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,837 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,843 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,843 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,843 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,843 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,844 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,844 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,844 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,847 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,848 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,848 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,848 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,848 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,848 WARN  L313   ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,849 WARN  L313   ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2020-10-16 11:32:48,867 INFO  L149    ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions.
[2020-10-16 11:32:48,882 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2020-10-16 11:32:48,904 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-16 11:32:48,904 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-16 11:32:48,904 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-10-16 11:32:48,904 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-16 11:32:48,905 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-16 11:32:48,905 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-16 11:32:48,905 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-16 11:32:48,905 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-16 11:32:48,924 INFO  L129   etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation.
[2020-10-16 11:32:48,928 INFO  L144   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow
[2020-10-16 11:32:48,931 INFO  L111        LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 77 transitions, 196 flow
[2020-10-16 11:32:48,933 INFO  L71            FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow
[2020-10-16 11:32:48,998 INFO  L129       PetriNetUnfolder]: 5/85 cut-off events.
[2020-10-16 11:32:48,999 INFO  L130       PetriNetUnfolder]: For 12/12 co-relation queries the response was YES.
[2020-10-16 11:32:49,005 INFO  L80            FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. 
[2020-10-16 11:32:49,013 INFO  L117        LiptonReduction]: Number of co-enabled transitions 1008
[2020-10-16 11:32:50,365 WARN  L193               SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64
[2020-10-16 11:32:50,510 INFO  L132        LiptonReduction]: Checked pairs total: 4010
[2020-10-16 11:32:50,510 INFO  L134        LiptonReduction]: Total number of compositions: 43
[2020-10-16 11:32:50,518 INFO  L100   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow
[2020-10-16 11:32:50,548 INFO  L122   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states.
[2020-10-16 11:32:50,550 INFO  L276                IsEmpty]: Start isEmpty. Operand 354 states.
[2020-10-16 11:32:50,567 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 11:32:50,568 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:32:50,569 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]
[2020-10-16 11:32:50,569 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2020-10-16 11:32:50,575 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:32:50,576 INFO  L82        PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times
[2020-10-16 11:32:50,586 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:32:50,587 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938115456]
[2020-10-16 11:32:50,588 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:32:50,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:32:51,335 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:32:51,336 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938115456]
[2020-10-16 11:32:51,337 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:32:51,337 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-10-16 11:32:51,338 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256508006]
[2020-10-16 11:32:51,343 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-16 11:32:51,344 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:32:51,359 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-16 11:32:51,360 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2020-10-16 11:32:51,362 INFO  L87              Difference]: Start difference. First operand 354 states. Second operand 12 states.
[2020-10-16 11:32:52,360 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:32:52,361 INFO  L93              Difference]: Finished difference Result 748 states and 1901 transitions.
[2020-10-16 11:32:52,361 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2020-10-16 11:32:52,363 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 25
[2020-10-16 11:32:52,364 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:32:52,389 INFO  L225             Difference]: With dead ends: 748
[2020-10-16 11:32:52,390 INFO  L226             Difference]: Without dead ends: 740
[2020-10-16 11:32:52,392 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506
[2020-10-16 11:32:52,421 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 740 states.
[2020-10-16 11:32:52,508 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 487.
[2020-10-16 11:32:52,510 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 487 states.
[2020-10-16 11:32:52,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1246 transitions.
[2020-10-16 11:32:52,515 INFO  L78                 Accepts]: Start accepts. Automaton has 487 states and 1246 transitions. Word has length 25
[2020-10-16 11:32:52,516 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:32:52,517 INFO  L481      AbstractCegarLoop]: Abstraction has 487 states and 1246 transitions.
[2020-10-16 11:32:52,517 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-16 11:32:52,517 INFO  L276                IsEmpty]: Start isEmpty. Operand 487 states and 1246 transitions.
[2020-10-16 11:32:52,522 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 11:32:52,522 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:32:52,522 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]
[2020-10-16 11:32:52,523 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-16 11:32:52,523 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2020-10-16 11:32:52,523 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:32:52,523 INFO  L82        PathProgramCache]: Analyzing trace with hash -63589262, now seen corresponding path program 2 times
[2020-10-16 11:32:52,524 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:32:52,524 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139432716]
[2020-10-16 11:32:52,524 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:32:52,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:32:53,033 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:32:53,033 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139432716]
[2020-10-16 11:32:53,034 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:32:53,034 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2020-10-16 11:32:53,034 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990423264]
[2020-10-16 11:32:53,036 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-16 11:32:53,036 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:32:53,036 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-16 11:32:53,037 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240
[2020-10-16 11:32:53,037 INFO  L87              Difference]: Start difference. First operand 487 states and 1246 transitions. Second operand 16 states.
[2020-10-16 11:32:55,912 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:32:55,912 INFO  L93              Difference]: Finished difference Result 1252 states and 3200 transitions.
[2020-10-16 11:32:55,913 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. 
[2020-10-16 11:32:55,913 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 25
[2020-10-16 11:32:55,913 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:32:55,927 INFO  L225             Difference]: With dead ends: 1252
[2020-10-16 11:32:55,928 INFO  L226             Difference]: Without dead ends: 1243
[2020-10-16 11:32:55,937 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=322, Invalid=1570, Unknown=0, NotChecked=0, Total=1892
[2020-10-16 11:32:55,951 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1243 states.
[2020-10-16 11:32:55,985 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 560.
[2020-10-16 11:32:55,986 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 560 states.
[2020-10-16 11:32:55,989 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1408 transitions.
[2020-10-16 11:32:55,989 INFO  L78                 Accepts]: Start accepts. Automaton has 560 states and 1408 transitions. Word has length 25
[2020-10-16 11:32:55,989 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:32:55,989 INFO  L481      AbstractCegarLoop]: Abstraction has 560 states and 1408 transitions.
[2020-10-16 11:32:55,990 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-16 11:32:55,990 INFO  L276                IsEmpty]: Start isEmpty. Operand 560 states and 1408 transitions.
[2020-10-16 11:32:55,992 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 11:32:55,992 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:32:55,992 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]
[2020-10-16 11:32:55,992 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-16 11:32:55,993 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2020-10-16 11:32:55,993 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:32:55,993 INFO  L82        PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times
[2020-10-16 11:32:55,993 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:32:55,994 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12882050]
[2020-10-16 11:32:55,994 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:32:56,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:32:56,519 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:32:56,520 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12882050]
[2020-10-16 11:32:56,520 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:32:56,520 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2020-10-16 11:32:56,521 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634074229]
[2020-10-16 11:32:56,521 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-16 11:32:56,522 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:32:56,522 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-16 11:32:56,522 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156
[2020-10-16 11:32:56,523 INFO  L87              Difference]: Start difference. First operand 560 states and 1408 transitions. Second operand 13 states.
[2020-10-16 11:32:57,354 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:32:57,354 INFO  L93              Difference]: Finished difference Result 683 states and 1739 transitions.
[2020-10-16 11:32:57,354 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-10-16 11:32:57,355 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 25
[2020-10-16 11:32:57,355 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:32:57,361 INFO  L225             Difference]: With dead ends: 683
[2020-10-16 11:32:57,362 INFO  L226             Difference]: Without dead ends: 675
[2020-10-16 11:32:57,363 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462
[2020-10-16 11:32:57,366 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 675 states.
[2020-10-16 11:32:57,387 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 639.
[2020-10-16 11:32:57,387 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 639 states.
[2020-10-16 11:32:57,391 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1623 transitions.
[2020-10-16 11:32:57,391 INFO  L78                 Accepts]: Start accepts. Automaton has 639 states and 1623 transitions. Word has length 25
[2020-10-16 11:32:57,392 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:32:57,392 INFO  L481      AbstractCegarLoop]: Abstraction has 639 states and 1623 transitions.
[2020-10-16 11:32:57,393 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-16 11:32:57,393 INFO  L276                IsEmpty]: Start isEmpty. Operand 639 states and 1623 transitions.
[2020-10-16 11:32:57,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 11:32:57,395 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:32:57,395 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]
[2020-10-16 11:32:57,396 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-16 11:32:57,396 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2020-10-16 11:32:57,396 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:32:57,396 INFO  L82        PathProgramCache]: Analyzing trace with hash 374980096, now seen corresponding path program 2 times
[2020-10-16 11:32:57,397 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:32:57,400 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470193701]
[2020-10-16 11:32:57,400 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:32:57,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:32:57,956 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:32:57,956 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470193701]
[2020-10-16 11:32:57,957 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:32:57,957 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2020-10-16 11:32:57,957 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818481637]
[2020-10-16 11:32:57,958 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:32:57,958 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:32:57,958 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:32:57,959 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:32:57,959 INFO  L87              Difference]: Start difference. First operand 639 states and 1623 transitions. Second operand 17 states.
[2020-10-16 11:33:01,231 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:33:01,231 INFO  L93              Difference]: Finished difference Result 1378 states and 3442 transitions.
[2020-10-16 11:33:01,232 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. 
[2020-10-16 11:33:01,232 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 25
[2020-10-16 11:33:01,232 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:33:01,240 INFO  L225             Difference]: With dead ends: 1378
[2020-10-16 11:33:01,240 INFO  L226             Difference]: Without dead ends: 1360
[2020-10-16 11:33:01,241 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=372, Invalid=1980, Unknown=0, NotChecked=0, Total=2352
[2020-10-16 11:33:01,245 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1360 states.
[2020-10-16 11:33:01,270 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 727.
[2020-10-16 11:33:01,270 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 727 states.
[2020-10-16 11:33:01,272 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1860 transitions.
[2020-10-16 11:33:01,273 INFO  L78                 Accepts]: Start accepts. Automaton has 727 states and 1860 transitions. Word has length 25
[2020-10-16 11:33:01,273 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:33:01,273 INFO  L481      AbstractCegarLoop]: Abstraction has 727 states and 1860 transitions.
[2020-10-16 11:33:01,273 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:33:01,273 INFO  L276                IsEmpty]: Start isEmpty. Operand 727 states and 1860 transitions.
[2020-10-16 11:33:01,276 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 11:33:01,276 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:33:01,276 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]
[2020-10-16 11:33:01,276 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-16 11:33:01,277 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2020-10-16 11:33:01,277 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:33:01,277 INFO  L82        PathProgramCache]: Analyzing trace with hash 284319048, now seen corresponding path program 1 times
[2020-10-16 11:33:01,277 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:33:01,278 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179447511]
[2020-10-16 11:33:01,278 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:33:01,295 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:33:01,386 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:33:01,387 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179447511]
[2020-10-16 11:33:01,387 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:33:01,387 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-16 11:33:01,387 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579257131]
[2020-10-16 11:33:01,388 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-16 11:33:01,388 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:33:01,388 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-16 11:33:01,389 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-10-16 11:33:01,389 INFO  L87              Difference]: Start difference. First operand 727 states and 1860 transitions. Second operand 8 states.
[2020-10-16 11:33:01,568 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:33:01,569 INFO  L93              Difference]: Finished difference Result 912 states and 2286 transitions.
[2020-10-16 11:33:01,569 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-16 11:33:01,569 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 25
[2020-10-16 11:33:01,570 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:33:01,575 INFO  L225             Difference]: With dead ends: 912
[2020-10-16 11:33:01,575 INFO  L226             Difference]: Without dead ends: 773
[2020-10-16 11:33:01,575 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2020-10-16 11:33:01,578 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 773 states.
[2020-10-16 11:33:01,592 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 704.
[2020-10-16 11:33:01,593 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 704 states.
[2020-10-16 11:33:01,595 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1796 transitions.
[2020-10-16 11:33:01,595 INFO  L78                 Accepts]: Start accepts. Automaton has 704 states and 1796 transitions. Word has length 25
[2020-10-16 11:33:01,595 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:33:01,595 INFO  L481      AbstractCegarLoop]: Abstraction has 704 states and 1796 transitions.
[2020-10-16 11:33:01,596 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-16 11:33:01,596 INFO  L276                IsEmpty]: Start isEmpty. Operand 704 states and 1796 transitions.
[2020-10-16 11:33:01,598 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 11:33:01,598 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:33:01,598 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]
[2020-10-16 11:33:01,598 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-16 11:33:01,599 INFO  L429      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2020-10-16 11:33:01,599 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:33:01,599 INFO  L82        PathProgramCache]: Analyzing trace with hash -1342328380, now seen corresponding path program 1 times
[2020-10-16 11:33:01,599 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:33:01,599 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815773302]
[2020-10-16 11:33:01,600 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:33:01,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:33:02,094 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:33:02,096 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815773302]
[2020-10-16 11:33:02,097 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:33:02,097 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-10-16 11:33:02,097 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11925863]
[2020-10-16 11:33:02,098 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-16 11:33:02,098 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:33:02,098 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-16 11:33:02,099 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182
[2020-10-16 11:33:02,100 INFO  L87              Difference]: Start difference. First operand 704 states and 1796 transitions. Second operand 14 states.
[2020-10-16 11:33:03,988 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:33:03,989 INFO  L93              Difference]: Finished difference Result 1088 states and 2765 transitions.
[2020-10-16 11:33:03,989 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2020-10-16 11:33:03,989 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 25
[2020-10-16 11:33:03,990 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:33:03,997 INFO  L225             Difference]: With dead ends: 1088
[2020-10-16 11:33:03,997 INFO  L226             Difference]: Without dead ends: 1082
[2020-10-16 11:33:03,998 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 11:33:04,001 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1082 states.
[2020-10-16 11:33:04,019 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 771.
[2020-10-16 11:33:04,020 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 771 states.
[2020-10-16 11:33:04,022 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1992 transitions.
[2020-10-16 11:33:04,023 INFO  L78                 Accepts]: Start accepts. Automaton has 771 states and 1992 transitions. Word has length 25
[2020-10-16 11:33:04,023 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:33:04,023 INFO  L481      AbstractCegarLoop]: Abstraction has 771 states and 1992 transitions.
[2020-10-16 11:33:04,023 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-16 11:33:04,023 INFO  L276                IsEmpty]: Start isEmpty. Operand 771 states and 1992 transitions.
[2020-10-16 11:33:04,026 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 11:33:04,026 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:33:04,026 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]
[2020-10-16 11:33:04,026 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-10-16 11:33:04,027 INFO  L429      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2020-10-16 11:33:04,027 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:33:04,027 INFO  L82        PathProgramCache]: Analyzing trace with hash -1285072000, now seen corresponding path program 1 times
[2020-10-16 11:33:04,027 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:33:04,027 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376917742]
[2020-10-16 11:33:04,028 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:33:04,040 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:33:04,370 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:33:04,370 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376917742]
[2020-10-16 11:33:04,370 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:33:04,371 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2020-10-16 11:33:04,371 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643320518]
[2020-10-16 11:33:04,371 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:33:04,371 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:33:04,372 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:33:04,372 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:33:04,372 INFO  L87              Difference]: Start difference. First operand 771 states and 1992 transitions. Second operand 17 states.
[2020-10-16 11:33:05,130 WARN  L193               SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40
[2020-10-16 11:33:05,252 WARN  L193               SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36
[2020-10-16 11:33:05,607 WARN  L193               SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44
[2020-10-16 11:33:06,409 WARN  L193               SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40
[2020-10-16 11:33:06,701 WARN  L193               SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47
[2020-10-16 11:33:06,890 WARN  L193               SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43
[2020-10-16 11:33:07,502 WARN  L193               SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47
[2020-10-16 11:33:07,775 WARN  L193               SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43
[2020-10-16 11:33:07,907 WARN  L193               SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40
[2020-10-16 11:33:08,414 WARN  L193               SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51
[2020-10-16 11:33:08,610 WARN  L193               SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47
[2020-10-16 11:33:08,792 WARN  L193               SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44
[2020-10-16 11:33:09,753 WARN  L193               SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42
[2020-10-16 11:33:10,114 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:33:10,114 INFO  L93              Difference]: Finished difference Result 1437 states and 3539 transitions.
[2020-10-16 11:33:10,115 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. 
[2020-10-16 11:33:10,115 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 25
[2020-10-16 11:33:10,115 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:33:10,123 INFO  L225             Difference]: With dead ends: 1437
[2020-10-16 11:33:10,123 INFO  L226             Difference]: Without dead ends: 1424
[2020-10-16 11:33:10,125 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=898, Invalid=3524, Unknown=0, NotChecked=0, Total=4422
[2020-10-16 11:33:10,129 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1424 states.
[2020-10-16 11:33:10,151 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 872.
[2020-10-16 11:33:10,151 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 872 states.
[2020-10-16 11:33:10,153 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2245 transitions.
[2020-10-16 11:33:10,153 INFO  L78                 Accepts]: Start accepts. Automaton has 872 states and 2245 transitions. Word has length 25
[2020-10-16 11:33:10,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:33:10,154 INFO  L481      AbstractCegarLoop]: Abstraction has 872 states and 2245 transitions.
[2020-10-16 11:33:10,154 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:33:10,154 INFO  L276                IsEmpty]: Start isEmpty. Operand 872 states and 2245 transitions.
[2020-10-16 11:33:10,157 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 11:33:10,157 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:33:10,157 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]
[2020-10-16 11:33:10,157 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-10-16 11:33:10,158 INFO  L429      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2020-10-16 11:33:10,158 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:33:10,158 INFO  L82        PathProgramCache]: Analyzing trace with hash -421440302, now seen corresponding path program 2 times
[2020-10-16 11:33:10,158 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:33:10,159 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998609051]
[2020-10-16 11:33:10,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:33:10,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:33:10,529 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:33:10,530 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998609051]
[2020-10-16 11:33:10,530 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:33:10,530 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2020-10-16 11:33:10,531 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390131537]
[2020-10-16 11:33:10,531 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:33:10,531 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:33:10,531 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:33:10,532 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:33:10,532 INFO  L87              Difference]: Start difference. First operand 872 states and 2245 transitions. Second operand 17 states.
[2020-10-16 11:33:11,297 WARN  L193               SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40
[2020-10-16 11:33:11,753 WARN  L193               SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44
[2020-10-16 11:33:12,568 WARN  L193               SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40
[2020-10-16 11:33:12,862 WARN  L193               SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47
[2020-10-16 11:33:13,057 WARN  L193               SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43
[2020-10-16 11:33:13,691 WARN  L193               SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47
[2020-10-16 11:33:13,972 WARN  L193               SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43
[2020-10-16 11:33:14,107 WARN  L193               SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40
[2020-10-16 11:33:14,344 WARN  L193               SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37
[2020-10-16 11:33:14,641 WARN  L193               SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51
[2020-10-16 11:33:14,831 WARN  L193               SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47
[2020-10-16 11:33:15,001 WARN  L193               SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44
[2020-10-16 11:33:16,090 WARN  L193               SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42
[2020-10-16 11:33:16,269 WARN  L193               SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48
[2020-10-16 11:33:16,410 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:33:16,410 INFO  L93              Difference]: Finished difference Result 1438 states and 3539 transitions.
[2020-10-16 11:33:16,411 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. 
[2020-10-16 11:33:16,411 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 25
[2020-10-16 11:33:16,411 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:33:16,420 INFO  L225             Difference]: With dead ends: 1438
[2020-10-16 11:33:16,420 INFO  L226             Difference]: Without dead ends: 1419
[2020-10-16 11:33:16,422 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556
[2020-10-16 11:33:16,425 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1419 states.
[2020-10-16 11:33:16,444 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 863.
[2020-10-16 11:33:16,444 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 863 states.
[2020-10-16 11:33:16,447 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2222 transitions.
[2020-10-16 11:33:16,447 INFO  L78                 Accepts]: Start accepts. Automaton has 863 states and 2222 transitions. Word has length 25
[2020-10-16 11:33:16,448 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:33:16,448 INFO  L481      AbstractCegarLoop]: Abstraction has 863 states and 2222 transitions.
[2020-10-16 11:33:16,448 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:33:16,448 INFO  L276                IsEmpty]: Start isEmpty. Operand 863 states and 2222 transitions.
[2020-10-16 11:33:16,450 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 11:33:16,451 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:33:16,451 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]
[2020-10-16 11:33:16,451 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-10-16 11:33:16,451 INFO  L429      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2020-10-16 11:33:16,451 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:33:16,452 INFO  L82        PathProgramCache]: Analyzing trace with hash -1646732586, now seen corresponding path program 3 times
[2020-10-16 11:33:16,452 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:33:16,452 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470742564]
[2020-10-16 11:33:16,452 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:33:16,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:33:16,860 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:33:16,861 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470742564]
[2020-10-16 11:33:16,861 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:33:16,861 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2020-10-16 11:33:16,862 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140013340]
[2020-10-16 11:33:16,863 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-16 11:33:16,863 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:33:16,863 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-16 11:33:16,863 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272
[2020-10-16 11:33:16,863 INFO  L87              Difference]: Start difference. First operand 863 states and 2222 transitions. Second operand 17 states.
[2020-10-16 11:33:17,603 WARN  L193               SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50
[2020-10-16 11:33:17,752 WARN  L193               SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51
[2020-10-16 11:33:17,929 WARN  L193               SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56
[2020-10-16 11:33:18,121 WARN  L193               SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58
[2020-10-16 11:33:18,366 WARN  L193               SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64
[2020-10-16 11:33:18,720 WARN  L193               SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54
[2020-10-16 11:33:18,987 WARN  L193               SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60
[2020-10-16 11:33:19,187 WARN  L193               SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62
[2020-10-16 11:33:19,377 WARN  L193               SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48
[2020-10-16 11:33:19,595 WARN  L193               SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68
[2020-10-16 11:33:19,877 WARN  L193               SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49
[2020-10-16 11:33:20,076 WARN  L193               SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56
[2020-10-16 11:33:20,303 WARN  L193               SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52
[2020-10-16 11:33:20,521 WARN  L193               SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59
[2020-10-16 11:33:20,752 WARN  L193               SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59
[2020-10-16 11:33:20,808 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:33:20,809 INFO  L93              Difference]: Finished difference Result 1720 states and 4208 transitions.
[2020-10-16 11:33:20,809 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. 
[2020-10-16 11:33:20,809 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 25
[2020-10-16 11:33:20,810 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:33:20,818 INFO  L225             Difference]: With dead ends: 1720
[2020-10-16 11:33:20,818 INFO  L226             Difference]: Without dead ends: 1702
[2020-10-16 11:33:20,819 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980
[2020-10-16 11:33:20,824 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1702 states.
[2020-10-16 11:33:20,846 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 940.
[2020-10-16 11:33:20,847 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 940 states.
[2020-10-16 11:33:20,849 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2409 transitions.
[2020-10-16 11:33:20,850 INFO  L78                 Accepts]: Start accepts. Automaton has 940 states and 2409 transitions. Word has length 25
[2020-10-16 11:33:20,850 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:33:20,850 INFO  L481      AbstractCegarLoop]: Abstraction has 940 states and 2409 transitions.
[2020-10-16 11:33:20,850 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-16 11:33:20,850 INFO  L276                IsEmpty]: Start isEmpty. Operand 940 states and 2409 transitions.
[2020-10-16 11:33:20,853 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 11:33:20,853 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:33:20,853 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]
[2020-10-16 11:33:20,854 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-10-16 11:33:20,854 INFO  L429      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2020-10-16 11:33:20,854 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:33:20,854 INFO  L82        PathProgramCache]: Analyzing trace with hash 1982583190, now seen corresponding path program 3 times
[2020-10-16 11:33:20,854 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:33:20,855 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514869868]
[2020-10-16 11:33:20,855 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:33:20,865 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-16 11:33:21,458 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-16 11:33:21,458 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514869868]
[2020-10-16 11:33:21,459 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-16 11:33:21,459 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2020-10-16 11:33:21,459 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307007406]
[2020-10-16 11:33:21,459 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-16 11:33:21,460 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-16 11:33:21,460 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-16 11:33:21,460 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210
[2020-10-16 11:33:21,461 INFO  L87              Difference]: Start difference. First operand 940 states and 2409 transitions. Second operand 15 states.
[2020-10-16 11:33:21,709 WARN  L193               SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33
[2020-10-16 11:33:21,885 WARN  L193               SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44
[2020-10-16 11:33:22,175 WARN  L193               SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48
[2020-10-16 11:33:22,389 WARN  L193               SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48
[2020-10-16 11:33:22,735 WARN  L193               SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52
[2020-10-16 11:33:23,018 WARN  L193               SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52
[2020-10-16 11:33:23,472 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56
[2020-10-16 11:33:24,363 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-16 11:33:24,363 INFO  L93              Difference]: Finished difference Result 1246 states and 3165 transitions.
[2020-10-16 11:33:24,363 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-10-16 11:33:24,364 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 25
[2020-10-16 11:33:24,364 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-16 11:33:24,370 INFO  L225             Difference]: With dead ends: 1246
[2020-10-16 11:33:24,370 INFO  L226             Difference]: Without dead ends: 1230
[2020-10-16 11:33:24,371 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122
[2020-10-16 11:33:24,374 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1230 states.
[2020-10-16 11:33:24,396 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1050.
[2020-10-16 11:33:24,396 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1050 states.
[2020-10-16 11:33:24,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2751 transitions.
[2020-10-16 11:33:24,399 INFO  L78                 Accepts]: Start accepts. Automaton has 1050 states and 2751 transitions. Word has length 25
[2020-10-16 11:33:24,400 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-16 11:33:24,400 INFO  L481      AbstractCegarLoop]: Abstraction has 1050 states and 2751 transitions.
[2020-10-16 11:33:24,400 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-16 11:33:24,400 INFO  L276                IsEmpty]: Start isEmpty. Operand 1050 states and 2751 transitions.
[2020-10-16 11:33:24,403 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-16 11:33:24,403 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-16 11:33:24,403 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]
[2020-10-16 11:33:24,404 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-10-16 11:33:24,404 INFO  L429      AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2020-10-16 11:33:24,404 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-16 11:33:24,404 INFO  L82        PathProgramCache]: Analyzing trace with hash -1689584038, now seen corresponding path program 2 times
[2020-10-16 11:33:24,404 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-16 11:33:24,405 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941097019]
[2020-10-16 11:33:24,405 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-16 11:33:24,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-16 11:33:24,421 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-16 11:33:24,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-16 11:33:24,434 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-16 11:33:24,464 INFO  L173   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-10-16 11:33:24,465 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2020-10-16 11:33:24,465 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-10-16 11:33:24,518 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:33:24 BasicIcfg
[2020-10-16 11:33:24,518 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-16 11:33:24,520 INFO  L168              Benchmark]: Toolchain (without parser) took 36548.49 ms. Allocated memory was 144.7 MB in the beginning and 483.9 MB in the end (delta: 339.2 MB). Free memory was 98.8 MB in the beginning and 137.2 MB in the end (delta: -38.4 MB). Peak memory consumption was 300.8 MB. Max. memory is 7.1 GB.
[2020-10-16 11:33:24,521 INFO  L168              Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-10-16 11:33:24,521 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 340.27 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 98.4 MB in the beginning and 179.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB.
[2020-10-16 11:33:24,522 INFO  L168              Benchmark]: Boogie Procedure Inliner took 38.14 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 177.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
[2020-10-16 11:33:24,523 INFO  L168              Benchmark]: Boogie Preprocessor took 19.79 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 175.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB.
[2020-10-16 11:33:24,523 INFO  L168              Benchmark]: RCFGBuilder took 324.59 ms. Allocated memory is still 201.3 MB. Free memory was 175.2 MB in the beginning and 157.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB.
[2020-10-16 11:33:24,524 INFO  L168              Benchmark]: TraceAbstraction took 35819.46 ms. Allocated memory was 201.3 MB in the beginning and 483.9 MB in the end (delta: 282.6 MB). Free memory was 157.2 MB in the beginning and 137.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 302.6 MB. Max. memory is 7.1 GB.
[2020-10-16 11:33:24,528 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 340.27 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 98.4 MB in the beginning and 179.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 38.14 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 177.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 19.79 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 175.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 324.59 ms. Allocated memory is still 201.3 MB. Free memory was 175.2 MB in the beginning and 157.2 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 35819.46 ms. Allocated memory was 201.3 MB in the beginning and 483.9 MB in the end (delta: 282.6 MB). Free memory was 157.2 MB in the beginning and 137.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 302.6 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: PetriNetLargeBlockEncoding benchmarks
    719 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 41 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 188 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 81 PlacesBefore, 39 PlacesAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 4010 MoverChecksTotal
  - CounterExampleResult [Line: 37]: assertion can be violated
    assertion can be violated
We found a FailurePath: 
[L13]               0  int counter = 0;
[L23]               0  int val = 0;
[L25]               0  pthread_t first_thread_id;
[L26]               0  pthread_t second_thread_id;
[L27]               0  pthread_t third_thread_id;
[L29]  FCALL, FORK  0  pthread_create(&first_thread_id, NULL, foo, &val)
       VAL             [counter=0, n={8:0}]
[L30]  FCALL, FORK  0  pthread_create(&second_thread_id, NULL, foo, &val)
       VAL             [counter=0, n={8:0}]
[L16]               2  int *x = (int *)n;
[L17]               2  ++counter
       VAL             [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}]
[L31]  FCALL, FORK  0  pthread_create(&third_thread_id, NULL, foo, &val)
       VAL             [++counter=1, counter=0, n={8:0}, n={8:0}, x={8:0}]
[L16]               3  int *x = (int *)n;
[L17]  EXPR         3  ++counter
       VAL             [++counter=1, counter=1, n={8:0}, n={8:0}, x={8:0}]
[L17]               3  *x = ++counter
[L18]               3  return 0;
[L17]               2  ++counter
       VAL             [++counter=1, \result={0:0}, counter=2, n={8:0}, n={8:0}, x={8:0}]
[L16]               1  int *x = (int *)n;
[L17]  EXPR         1  ++counter
       VAL             [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}]
[L33]               0  \read(first_thread_id)
       VAL             [++counter=3, \result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}]
[L17]               1  *x = ++counter
[L18]               1  return 0;
[L17]               2  *x = ++counter
[L18]               2  return 0;
[L33]  FCALL, JOIN  1  pthread_join(first_thread_id, NULL)
       VAL             [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}]
[L34]               0  \read(second_thread_id)
       VAL             [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}]
[L34]  FCALL, JOIN  2  pthread_join(second_thread_id, NULL)
       VAL             [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}]
[L35]               0  \read(third_thread_id)
       VAL             [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}]
[L35]  FCALL, JOIN  3  pthread_join(third_thread_id, NULL)
       VAL             [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}]
[L37]  FCALL        0  IdentifierExpression[val]
[L37]               0  CodeAnnotStmt[Assertion]
       VAL             [\result={0:0}, counter=3, n={8:0}, n={8:0}, x={8:0}]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 28.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 458 SDtfs, 2639 SDslu, 2851 SDs, 0 SdLazy, 8096 SolverSat, 534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3983 ImplicationChecksByTransitivity, 24.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1050occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 4035 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 275 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 119808 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...