java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem07_label06.c


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This is Ultimate 0.1.24-112bae1
[2019-09-07 15:35:39,930 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-09-07 15:35:39,933 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-09-07 15:35:39,951 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-09-07 15:35:39,951 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-09-07 15:35:39,953 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-09-07 15:35:39,955 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-09-07 15:35:39,968 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-09-07 15:35:39,971 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2019-09-07 15:35:39,976 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-09-07 15:35:39,976 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-09-07 15:35:39,978 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-09-07 15:35:39,980 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-09-07 15:35:39,981 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-09-07 15:35:39,983 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-09-07 15:35:39,984 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-09-07 15:35:39,986 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-09-07 15:35:39,991 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-09-07 15:35:39,995 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-09-07 15:35:39,997 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-09-07 15:35:40,000 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-09-07 15:35:40,001 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-09-07 15:35:40,003 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-09-07 15:35:40,003 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-09-07 15:35:40,005 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-09-07 15:35:40,007 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-09-07 15:35:40,008 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-09-07 15:35:40,008 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2019-09-07 15:35:40,010 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-09-07 15:35:40,011 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-09-07 15:35:40,013 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-09-07 15:35:40,013 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2019-09-07 15:35:40,014 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-09-07 15:35:40,016 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-09-07 15:35:40,017 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-09-07 15:35:40,053 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-09-07 15:35:40,053 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-09-07 15:35:40,055 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-09-07 15:35:40,055 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-09-07 15:35:40,055 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-09-07 15:35:40,055 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-09-07 15:35:40,056 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-09-07 15:35:40,056 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-09-07 15:35:40,056 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-09-07 15:35:40,058 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-09-07 15:35:40,058 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-09-07 15:35:40,059 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-09-07 15:35:40,059 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-09-07 15:35:40,059 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-09-07 15:35:40,059 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-09-07 15:35:40,059 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-09-07 15:35:40,060 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-09-07 15:35:40,060 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-09-07 15:35:40,060 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-09-07 15:35:40,060 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-09-07 15:35:40,060 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-09-07 15:35:40,061 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-09-07 15:35:40,061 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-09-07 15:35:40,063 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-09-07 15:35:40,063 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-09-07 15:35:40,064 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-09-07 15:35:40,064 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-09-07 15:35:40,064 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-09-07 15:35:40,065 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-09-07 15:35:40,112 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-09-07 15:35:40,127 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-09-07 15:35:40,130 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-09-07 15:35:40,132 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-09-07 15:35:40,132 INFO  L275        PluginConnector]: CDTParser initialized
[2019-09-07 15:35:40,133 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem07_label06.c
[2019-09-07 15:35:40,194 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445d019b6/8dc634f8c5d047898d7368f482ae1d1b/FLAG41659e978
[2019-09-07 15:35:42,374 INFO  L306              CDTParser]: Found 1 translation units.
[2019-09-07 15:35:42,375 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem07_label06.c
[2019-09-07 15:35:42,512 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445d019b6/8dc634f8c5d047898d7368f482ae1d1b/FLAG41659e978
[2019-09-07 15:35:43,031 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445d019b6/8dc634f8c5d047898d7368f482ae1d1b
[2019-09-07 15:35:43,045 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-09-07 15:35:43,047 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-09-07 15:35:43,049 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-09-07 15:35:43,049 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-09-07 15:35:43,053 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-09-07 15:35:43,054 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:35:43" (1/1) ...
[2019-09-07 15:35:43,057 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772df1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:35:43, skipping insertion in model container
[2019-09-07 15:35:43,058 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:35:43" (1/1) ...
[2019-09-07 15:35:43,066 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-09-07 15:35:44,102 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-09-07 15:35:56,154 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-09-07 15:35:56,160 INFO  L188         MainTranslator]: Completed pre-run
[2019-09-07 15:36:04,857 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-09-07 15:36:05,971 INFO  L192         MainTranslator]: Completed translation
[2019-09-07 15:36:05,971 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:36:05 WrapperNode
[2019-09-07 15:36:05,971 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-09-07 15:36:05,972 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-09-07 15:36:05,972 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-09-07 15:36:05,973 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-09-07 15:36:05,983 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:36:05" (1/1) ...
[2019-09-07 15:36:05,983 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:36:05" (1/1) ...
[2019-09-07 15:36:06,369 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:36:05" (1/1) ...
[2019-09-07 15:36:06,369 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:36:05" (1/1) ...
[2019-09-07 15:36:07,415 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:36:05" (1/1) ...
[2019-09-07 15:36:07,595 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:36:05" (1/1) ...
[2019-09-07 15:36:07,951 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:36:05" (1/1) ...
[2019-09-07 15:36:08,410 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-09-07 15:36:08,411 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-09-07 15:36:08,411 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-09-07 15:36:08,411 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-09-07 15:36:08,412 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:36:05" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-09-07 15:36:08,472 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-09-07 15:36:08,472 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-09-07 15:36:08,473 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-09-07 15:36:08,473 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-09-07 15:36:08,473 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-09-07 15:36:08,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-09-07 15:36:08,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2019-09-07 15:36:08,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2019-09-07 15:36:08,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2019-09-07 15:36:08,474 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2019-09-07 15:36:08,475 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output9
[2019-09-07 15:36:08,475 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output10
[2019-09-07 15:36:08,475 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output11
[2019-09-07 15:36:08,475 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output12
[2019-09-07 15:36:08,475 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output13
[2019-09-07 15:36:08,476 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output14
[2019-09-07 15:36:08,476 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output15
[2019-09-07 15:36:08,476 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output16
[2019-09-07 15:36:08,476 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output17
[2019-09-07 15:36:08,476 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output18
[2019-09-07 15:36:08,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output19
[2019-09-07 15:36:08,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output20
[2019-09-07 15:36:08,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output21
[2019-09-07 15:36:08,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output22
[2019-09-07 15:36:08,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output23
[2019-09-07 15:36:08,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output24
[2019-09-07 15:36:08,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output25
[2019-09-07 15:36:08,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output26
[2019-09-07 15:36:08,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output27
[2019-09-07 15:36:08,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output28
[2019-09-07 15:36:08,479 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output29
[2019-09-07 15:36:08,479 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output30
[2019-09-07 15:36:08,479 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output31
[2019-09-07 15:36:08,479 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output32
[2019-09-07 15:36:08,479 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output33
[2019-09-07 15:36:08,479 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output34
[2019-09-07 15:36:08,480 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output35
[2019-09-07 15:36:08,480 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output36
[2019-09-07 15:36:08,480 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output37
[2019-09-07 15:36:08,480 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output38
[2019-09-07 15:36:08,480 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output39
[2019-09-07 15:36:08,480 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output40
[2019-09-07 15:36:08,481 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output41
[2019-09-07 15:36:08,481 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output42
[2019-09-07 15:36:08,481 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output43
[2019-09-07 15:36:08,481 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output44
[2019-09-07 15:36:08,481 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output45
[2019-09-07 15:36:08,482 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output46
[2019-09-07 15:36:08,482 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-09-07 15:36:08,482 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-09-07 15:36:08,482 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-09-07 15:36:08,482 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-09-07 15:36:08,482 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-09-07 15:36:08,483 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2019-09-07 15:36:08,483 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2019-09-07 15:36:08,483 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2019-09-07 15:36:08,483 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2019-09-07 15:36:08,483 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output9
[2019-09-07 15:36:08,483 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output10
[2019-09-07 15:36:08,484 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output11
[2019-09-07 15:36:08,484 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output12
[2019-09-07 15:36:08,484 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output13
[2019-09-07 15:36:08,484 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output14
[2019-09-07 15:36:08,484 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output15
[2019-09-07 15:36:08,484 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output16
[2019-09-07 15:36:08,485 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output17
[2019-09-07 15:36:08,485 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output18
[2019-09-07 15:36:08,485 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output19
[2019-09-07 15:36:08,485 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output20
[2019-09-07 15:36:08,485 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output21
[2019-09-07 15:36:08,486 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output22
[2019-09-07 15:36:08,486 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output23
[2019-09-07 15:36:08,486 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output24
[2019-09-07 15:36:08,486 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output25
[2019-09-07 15:36:08,486 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output26
[2019-09-07 15:36:08,487 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output27
[2019-09-07 15:36:08,487 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output28
[2019-09-07 15:36:08,487 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output29
[2019-09-07 15:36:08,487 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output30
[2019-09-07 15:36:08,487 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output31
[2019-09-07 15:36:08,487 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output32
[2019-09-07 15:36:08,488 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output33
[2019-09-07 15:36:08,488 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output34
[2019-09-07 15:36:08,488 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output35
[2019-09-07 15:36:08,488 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output36
[2019-09-07 15:36:08,488 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output37
[2019-09-07 15:36:08,489 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output38
[2019-09-07 15:36:08,489 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output39
[2019-09-07 15:36:08,489 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output40
[2019-09-07 15:36:08,489 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output41
[2019-09-07 15:36:08,489 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output42
[2019-09-07 15:36:08,489 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output43
[2019-09-07 15:36:08,490 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output44
[2019-09-07 15:36:08,490 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output45
[2019-09-07 15:36:08,490 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output46
[2019-09-07 15:36:08,490 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-09-07 15:36:08,490 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-09-07 15:36:08,491 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-09-07 15:36:08,491 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-09-07 15:36:08,491 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-09-07 15:36:08,491 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-09-07 15:36:57,269 INFO  L278             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-09-07 15:36:57,269 INFO  L283             CfgBuilder]: Removed 1 assume(true) statements.
[2019-09-07 15:36:57,276 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:36:57 BoogieIcfgContainer
[2019-09-07 15:36:57,276 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-09-07 15:36:57,277 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-09-07 15:36:57,277 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-09-07 15:36:57,280 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-09-07 15:36:57,280 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 03:35:43" (1/3) ...
[2019-09-07 15:36:57,281 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383edb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:36:57, skipping insertion in model container
[2019-09-07 15:36:57,282 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:36:05" (2/3) ...
[2019-09-07 15:36:57,282 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383edb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:36:57, skipping insertion in model container
[2019-09-07 15:36:57,282 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:36:57" (3/3) ...
[2019-09-07 15:36:57,284 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem07_label06.c
[2019-09-07 15:36:57,294 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-09-07 15:36:57,306 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-09-07 15:36:57,322 INFO  L252      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-09-07 15:36:57,395 INFO  L128   ementStrategyFactory]: Using default assertion order modulation
[2019-09-07 15:36:57,396 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2019-09-07 15:36:57,396 INFO  L378      AbstractCegarLoop]: Hoare is true
[2019-09-07 15:36:57,397 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-09-07 15:36:57,397 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-09-07 15:36:57,397 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-09-07 15:36:57,397 INFO  L382      AbstractCegarLoop]: Difference is false
[2019-09-07 15:36:57,397 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-09-07 15:36:57,397 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-09-07 15:36:57,542 INFO  L276                IsEmpty]: Start isEmpty. Operand 10446 states.
[2019-09-07 15:36:58,745 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10202
[2019-09-07 15:36:58,746 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:36:58,754 INFO  L399         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2019-09-07 15:36:58,757 INFO  L418      AbstractCegarLoop]: === Iteration 1 === [calculate_output46Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:36:58,769 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:36:58,778 INFO  L82        PathProgramCache]: Analyzing trace with hash -788260187, now seen corresponding path program 1 times
[2019-09-07 15:36:58,780 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:36:58,781 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:36:58,839 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:36:58,840 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:36:58,841 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:37:01,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:38:31,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:38:31,671 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-07 15:38:31,673 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-09-07 15:38:31,696 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-09-07 15:38:31,709 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-09-07 15:38:31,710 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-09-07 15:38:31,713 INFO  L87              Difference]: Start difference. First operand 10446 states. Second operand 3 states.
[2019-09-07 15:39:28,184 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:39:28,184 INFO  L93              Difference]: Finished difference Result 31264 states and 61877 transitions.
[2019-09-07 15:39:28,185 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-09-07 15:39:28,186 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 10201
[2019-09-07 15:39:28,217 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:39:28,348 INFO  L225             Difference]: With dead ends: 31264
[2019-09-07 15:39:28,348 INFO  L226             Difference]: Without dead ends: 20756
[2019-09-07 15:39:28,377 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 47 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-09-07 15:39:28,431 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20756 states.
[2019-09-07 15:39:28,988 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20756 to 20756.
[2019-09-07 15:39:28,990 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20756 states.
[2019-09-07 15:39:29,061 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20756 states to 20756 states and 40378 transitions.
[2019-09-07 15:39:29,063 INFO  L78                 Accepts]: Start accepts. Automaton has 20756 states and 40378 transitions. Word has length 10201
[2019-09-07 15:39:29,084 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:39:29,085 INFO  L475      AbstractCegarLoop]: Abstraction has 20756 states and 40378 transitions.
[2019-09-07 15:39:29,085 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-09-07 15:39:29,085 INFO  L276                IsEmpty]: Start isEmpty. Operand 20756 states and 40378 transitions.
[2019-09-07 15:39:30,073 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10210
[2019-09-07 15:39:30,073 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:39:30,078 INFO  L399         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2019-09-07 15:39:30,079 INFO  L418      AbstractCegarLoop]: === Iteration 2 === [calculate_output46Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:39:30,079 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:39:30,084 INFO  L82        PathProgramCache]: Analyzing trace with hash 926509681, now seen corresponding path program 1 times
[2019-09-07 15:39:30,084 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:39:30,085 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:39:30,089 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:39:30,090 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:39:30,090 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:39:31,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:41:03,369 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:41:03,370 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:41:03,370 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-07 15:41:03,396 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:41:06,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:41:06,406 INFO  L256         TraceCheckSpWp]: Trace formula consists of 12233 conjuncts, 94 conjunts are in the unsatisfiable core
[2019-09-07 15:41:06,623 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:42:04,246 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe
[2019-09-07 15:42:04,269 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-09-07 15:42:04,272 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-09-07 15:42:04,294 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-09-07 15:42:04,295 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-09-07 15:42:04,295 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-09-07 15:42:04,295 INFO  L87              Difference]: Start difference. First operand 20756 states and 40378 transitions. Second operand 7 states.
[2019-09-07 15:43:44,707 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:43:44,708 INFO  L93              Difference]: Finished difference Result 63092 states and 122631 transitions.
[2019-09-07 15:43:44,714 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-09-07 15:43:44,715 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 10209
[2019-09-07 15:43:44,744 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:43:44,892 INFO  L225             Difference]: With dead ends: 63092
[2019-09-07 15:43:44,892 INFO  L226             Difference]: Without dead ends: 42342
[2019-09-07 15:43:44,938 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 10265 GetRequests, 10258 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2019-09-07 15:43:44,994 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42342 states.
[2019-09-07 15:43:45,784 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42342 to 42052.
[2019-09-07 15:43:45,784 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 42052 states.
[2019-09-07 15:43:45,859 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42052 states to 42052 states and 61950 transitions.
[2019-09-07 15:43:45,859 INFO  L78                 Accepts]: Start accepts. Automaton has 42052 states and 61950 transitions. Word has length 10209
[2019-09-07 15:43:45,869 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:43:45,869 INFO  L475      AbstractCegarLoop]: Abstraction has 42052 states and 61950 transitions.
[2019-09-07 15:43:45,870 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-09-07 15:43:45,870 INFO  L276                IsEmpty]: Start isEmpty. Operand 42052 states and 61950 transitions.
[2019-09-07 15:43:46,985 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10220
[2019-09-07 15:43:46,985 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:43:46,992 INFO  L399         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2019-09-07 15:43:46,994 INFO  L418      AbstractCegarLoop]: === Iteration 3 === [calculate_output46Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:43:46,994 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:43:46,999 INFO  L82        PathProgramCache]: Analyzing trace with hash 741659137, now seen corresponding path program 1 times
[2019-09-07 15:43:46,999 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:43:46,999 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:43:47,004 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:43:47,005 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:43:47,005 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:43:47,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:44:19,119 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:44:19,119 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:44:19,120 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-07 15:44:19,144 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:44:22,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:44:22,152 INFO  L256         TraceCheckSpWp]: Trace formula consists of 12320 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-09-07 15:44:22,316 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:44:56,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:44:56,263 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-09-07 15:44:56,265 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9
[2019-09-07 15:44:56,282 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-09-07 15:44:56,282 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-09-07 15:44:56,283 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2019-09-07 15:44:56,283 INFO  L87              Difference]: Start difference. First operand 42052 states and 61950 transitions. Second operand 9 states.