/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 21:15:15,045 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-18 21:15:15,047 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 21:15:15,090 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 21:15:15,090 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 21:15:15,091 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 21:15:15,092 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 21:15:15,094 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 21:15:15,096 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 21:15:15,097 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 21:15:15,098 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 21:15:15,099 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 21:15:15,099 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 21:15:15,100 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 21:15:15,101 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 21:15:15,102 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 21:15:15,103 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 21:15:15,104 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 21:15:15,106 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 21:15:15,108 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 21:15:15,110 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 21:15:15,111 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 21:15:15,112 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 21:15:15,113 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 21:15:15,116 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 21:15:15,116 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 21:15:15,116 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 21:15:15,117 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 21:15:15,117 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 21:15:15,118 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 21:15:15,118 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 21:15:15,119 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 21:15:15,120 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 21:15:15,121 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 21:15:15,122 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 21:15:15,122 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 21:15:15,123 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 21:15:15,123 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 21:15:15,123 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 21:15:15,124 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 21:15:15,125 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 21:15:15,125 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
[2020-08-18 21:15:15,148 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-18 21:15:15,148 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 21:15:15,149 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 21:15:15,149 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-18 21:15:15,149 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-18 21:15:15,150 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 21:15:15,150 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-18 21:15:15,150 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-18 21:15:15,150 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-18 21:15:15,150 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-18 21:15:15,151 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 21:15:15,151 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 21:15:15,151 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 21:15:15,151 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-18 21:15:15,151 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-18 21:15:15,152 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-18 21:15:15,152 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-18 21:15:15,152 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 21:15:15,152 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-18 21:15:15,152 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-18 21:15:15,153 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-18 21:15:15,153 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 21:15:15,153 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 21:15:15,153 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 21:15:15,153 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 21:15:15,154 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-18 21:15:15,154 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 21:15:15,154 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 21:15:15,154 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-18 21:15:15,154 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST;
[2020-08-18 21:15:15,429 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 21:15:15,449 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 21:15:15,456 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 21:15:15,457 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-18 21:15:15,458 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-18 21:15:15,460 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c
[2020-08-18 21:15:15,523 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/799cbbd06/2fb360a4c3af4d359f1c4ed282307c97/FLAGe930d524c
[2020-08-18 21:15:16,076 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-18 21:15:16,077 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c
[2020-08-18 21:15:16,087 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/799cbbd06/2fb360a4c3af4d359f1c4ed282307c97/FLAGe930d524c
[2020-08-18 21:15:16,370 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/799cbbd06/2fb360a4c3af4d359f1c4ed282307c97
[2020-08-18 21:15:16,379 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 21:15:16,380 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 21:15:16,381 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 21:15:16,382 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 21:15:16,385 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 21:15:16,386 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:15:16" (1/1) ...
[2020-08-18 21:15:16,389 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d228d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:16, skipping insertion in model container
[2020-08-18 21:15:16,390 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:15:16" (1/1) ...
[2020-08-18 21:15:16,398 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-18 21:15:16,438 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-18 21:15:16,826 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 21:15:16,838 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-18 21:15:16,912 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 21:15:16,936 INFO  L208         MainTranslator]: Completed translation
[2020-08-18 21:15:16,937 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:16 WrapperNode
[2020-08-18 21:15:16,937 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 21:15:16,937 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 21:15:16,938 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 21:15:16,938 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 21:15:16,951 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:16" (1/1) ...
[2020-08-18 21:15:16,951 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:16" (1/1) ...
[2020-08-18 21:15:16,971 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:16" (1/1) ...
[2020-08-18 21:15:16,971 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:16" (1/1) ...
[2020-08-18 21:15:17,004 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:16" (1/1) ...
[2020-08-18 21:15:17,016 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:16" (1/1) ...
[2020-08-18 21:15:17,020 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:16" (1/1) ...
[2020-08-18 21:15:17,027 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 21:15:17,028 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 21:15:17,028 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 21:15:17,028 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-18 21:15:17,029 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:16" (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
[2020-08-18 21:15:17,096 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 21:15:17,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 21:15:17,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-08-18 21:15:17,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure avoid_zero
[2020-08-18 21:15:17,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_89
[2020-08-18 21:15:17,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_92
[2020-08-18 21:15:17,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_95
[2020-08-18 21:15:17,098 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_96
[2020-08-18 21:15:17,098 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_97
[2020-08-18 21:15:17,098 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_99
[2020-08-18 21:15:17,098 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_100
[2020-08-18 21:15:17,098 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 21:15:17,098 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-08-18 21:15:17,099 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 21:15:17,099 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-08-18 21:15:17,100 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-08-18 21:15:17,100 INFO  L130     BoogieDeclarations]: Found specification of procedure avoid_zero
[2020-08-18 21:15:17,100 INFO  L130     BoogieDeclarations]: Found specification of procedure strcmp
[2020-08-18 21:15:17,100 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_89
[2020-08-18 21:15:17,100 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_92
[2020-08-18 21:15:17,101 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_95
[2020-08-18 21:15:17,101 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_96
[2020-08-18 21:15:17,101 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_97
[2020-08-18 21:15:17,101 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-18 21:15:17,101 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_99
[2020-08-18 21:15:17,102 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_100
[2020-08-18 21:15:17,102 INFO  L130     BoogieDeclarations]: Found specification of procedure fopen
[2020-08-18 21:15:17,103 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-18 21:15:17,103 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-08-18 21:15:17,103 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-18 21:15:17,103 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-18 21:15:17,104 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-18 21:15:17,104 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-18 21:15:17,104 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-18 21:15:17,104 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-18 21:15:17,104 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-18 21:15:17,104 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-18 21:15:17,104 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 21:15:17,105 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2020-08-18 21:15:17,105 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 21:15:18,213 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 21:15:18,214 INFO  L295             CfgBuilder]: Removed 7 assume(true) statements.
[2020-08-18 21:15:18,219 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:15:18 BoogieIcfgContainer
[2020-08-18 21:15:18,219 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 21:15:18,221 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 21:15:18,221 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 21:15:18,224 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-18 21:15:18,225 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:15:16" (1/3) ...
[2020-08-18 21:15:18,225 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599d641b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:15:18, skipping insertion in model container
[2020-08-18 21:15:18,226 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:15:16" (2/3) ...
[2020-08-18 21:15:18,226 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599d641b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:15:18, skipping insertion in model container
[2020-08-18 21:15:18,226 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:15:18" (3/3) ...
[2020-08-18 21:15:18,228 INFO  L109   eAbstractionObserver]: Analyzing ICFG ofuf_5.c
[2020-08-18 21:15:18,239 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 21:15:18,247 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 21:15:18,261 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 21:15:18,283 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-18 21:15:18,283 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-18 21:15:18,283 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 21:15:18,283 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 21:15:18,284 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 21:15:18,284 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-18 21:15:18,284 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 21:15:18,284 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 21:15:18,307 INFO  L276                IsEmpty]: Start isEmpty. Operand 129 states.
[2020-08-18 21:15:18,318 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-08-18 21:15:18,319 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:15:18,320 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:15:18,321 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:15:18,326 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:15:18,327 INFO  L82        PathProgramCache]: Analyzing trace with hash 1328586124, now seen corresponding path program 1 times
[2020-08-18 21:15:18,336 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:15:18,337 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045129094]
[2020-08-18 21:15:18,337 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:15:18,569 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:18,818 WARN  L193               SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2020-08-18 21:15:18,820 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:15:18,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:18,891 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-08-18 21:15:18,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:18,952 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-08-18 21:15:18,956 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:18,961 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-18 21:15:18,962 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:18,973 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:15:18,974 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045129094]
[2020-08-18 21:15:18,977 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 21:15:18,977 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-18 21:15:18,978 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246521166]
[2020-08-18 21:15:18,984 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-18 21:15:18,985 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:15:19,002 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-18 21:15:19,004 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-08-18 21:15:19,007 INFO  L87              Difference]: Start difference. First operand 129 states. Second operand 5 states.
[2020-08-18 21:15:19,167 WARN  L193               SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-08-18 21:15:20,086 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:15:20,087 INFO  L93              Difference]: Finished difference Result 266 states and 409 transitions.
[2020-08-18 21:15:20,088 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-08-18 21:15:20,090 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 43
[2020-08-18 21:15:20,090 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:15:20,110 INFO  L225             Difference]: With dead ends: 266
[2020-08-18 21:15:20,110 INFO  L226             Difference]: Without dead ends: 141
[2020-08-18 21:15:20,120 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-18 21:15:20,141 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2020-08-18 21:15:20,227 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121.
[2020-08-18 21:15:20,228 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 121 states.
[2020-08-18 21:15:20,237 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 168 transitions.
[2020-08-18 21:15:20,239 INFO  L78                 Accepts]: Start accepts. Automaton has 121 states and 168 transitions. Word has length 43
[2020-08-18 21:15:20,240 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:15:20,240 INFO  L479      AbstractCegarLoop]: Abstraction has 121 states and 168 transitions.
[2020-08-18 21:15:20,240 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-18 21:15:20,241 INFO  L276                IsEmpty]: Start isEmpty. Operand 121 states and 168 transitions.
[2020-08-18 21:15:20,252 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-08-18 21:15:20,252 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:15:20,253 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:15:20,253 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 21:15:20,254 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:15:20,254 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:15:20,255 INFO  L82        PathProgramCache]: Analyzing trace with hash -294008176, now seen corresponding path program 1 times
[2020-08-18 21:15:20,255 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:15:20,256 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593562801]
[2020-08-18 21:15:20,256 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:15:20,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:20,512 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:15:20,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:20,569 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-08-18 21:15:20,576 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:20,627 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2020-08-18 21:15:20,629 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:20,633 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-08-18 21:15:20,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:20,643 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:15:20,643 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593562801]
[2020-08-18 21:15:20,644 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:15:20,644 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-08-18 21:15:20,644 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600165276]
[2020-08-18 21:15:20,646 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-18 21:15:20,646 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:15:20,647 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-18 21:15:20,647 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-08-18 21:15:20,647 INFO  L87              Difference]: Start difference. First operand 121 states and 168 transitions. Second operand 6 states.
[2020-08-18 21:15:20,763 WARN  L193               SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-08-18 21:15:21,803 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:15:21,803 INFO  L93              Difference]: Finished difference Result 267 states and 385 transitions.
[2020-08-18 21:15:21,804 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-18 21:15:21,804 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 45
[2020-08-18 21:15:21,804 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:15:21,808 INFO  L225             Difference]: With dead ends: 267
[2020-08-18 21:15:21,808 INFO  L226             Difference]: Without dead ends: 162
[2020-08-18 21:15:21,810 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-08-18 21:15:21,810 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 162 states.
[2020-08-18 21:15:21,831 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 123.
[2020-08-18 21:15:21,832 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 123 states.
[2020-08-18 21:15:21,833 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions.
[2020-08-18 21:15:21,833 INFO  L78                 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 45
[2020-08-18 21:15:21,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:15:21,834 INFO  L479      AbstractCegarLoop]: Abstraction has 123 states and 170 transitions.
[2020-08-18 21:15:21,834 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-18 21:15:21,834 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions.
[2020-08-18 21:15:21,836 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-08-18 21:15:21,836 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:15:21,836 INFO  L422         BasicCegarLoop]: trace histogram [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]
[2020-08-18 21:15:21,836 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 21:15:21,837 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:15:21,837 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:15:21,837 INFO  L82        PathProgramCache]: Analyzing trace with hash -1235066606, now seen corresponding path program 2 times
[2020-08-18 21:15:21,837 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:15:21,838 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307998542]
[2020-08-18 21:15:21,838 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:15:21,865 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:21,967 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:15:21,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:21,990 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-08-18 21:15:21,998 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:22,046 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-08-18 21:15:22,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:22,051 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-18 21:15:22,052 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:22,058 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:15:22,059 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307998542]
[2020-08-18 21:15:22,059 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:15:22,059 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-08-18 21:15:22,060 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610415416]
[2020-08-18 21:15:22,060 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-18 21:15:22,060 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:15:22,061 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-18 21:15:22,061 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-08-18 21:15:22,061 INFO  L87              Difference]: Start difference. First operand 123 states and 170 transitions. Second operand 7 states.
[2020-08-18 21:15:22,189 WARN  L193               SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-08-18 21:15:25,815 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:15:25,815 INFO  L93              Difference]: Finished difference Result 289 states and 419 transitions.
[2020-08-18 21:15:25,816 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-08-18 21:15:25,816 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 47
[2020-08-18 21:15:25,816 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:15:25,820 INFO  L225             Difference]: With dead ends: 289
[2020-08-18 21:15:25,820 INFO  L226             Difference]: Without dead ends: 184
[2020-08-18 21:15:25,821 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-08-18 21:15:25,822 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 184 states.
[2020-08-18 21:15:25,841 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 125.
[2020-08-18 21:15:25,842 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 125 states.
[2020-08-18 21:15:25,843 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 172 transitions.
[2020-08-18 21:15:25,843 INFO  L78                 Accepts]: Start accepts. Automaton has 125 states and 172 transitions. Word has length 47
[2020-08-18 21:15:25,844 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:15:25,844 INFO  L479      AbstractCegarLoop]: Abstraction has 125 states and 172 transitions.
[2020-08-18 21:15:25,844 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-18 21:15:25,844 INFO  L276                IsEmpty]: Start isEmpty. Operand 125 states and 172 transitions.
[2020-08-18 21:15:25,845 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2020-08-18 21:15:25,846 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:15:25,846 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:15:25,846 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 21:15:25,846 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:15:25,846 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:15:25,847 INFO  L82        PathProgramCache]: Analyzing trace with hash 645881620, now seen corresponding path program 3 times
[2020-08-18 21:15:25,847 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:15:25,847 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773684901]
[2020-08-18 21:15:25,847 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:15:25,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:26,013 WARN  L193               SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2020-08-18 21:15:26,014 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 21:15:26,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:26,047 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-08-18 21:15:26,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:26,131 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2020-08-18 21:15:26,133 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:26,136 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 21:15:26,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 21:15:26,145 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 21:15:26,145 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773684901]
[2020-08-18 21:15:26,146 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 21:15:26,146 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-08-18 21:15:26,146 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868061679]
[2020-08-18 21:15:26,146 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 21:15:26,147 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 21:15:26,147 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 21:15:26,147 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-08-18 21:15:26,148 INFO  L87              Difference]: Start difference. First operand 125 states and 172 transitions. Second operand 8 states.
[2020-08-18 21:15:27,658 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 21:15:27,658 INFO  L93              Difference]: Finished difference Result 309 states and 451 transitions.
[2020-08-18 21:15:27,659 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-18 21:15:27,659 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 49
[2020-08-18 21:15:27,659 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 21:15:27,662 INFO  L225             Difference]: With dead ends: 309
[2020-08-18 21:15:27,662 INFO  L226             Difference]: Without dead ends: 204
[2020-08-18 21:15:27,663 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2020-08-18 21:15:27,664 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 204 states.
[2020-08-18 21:15:27,684 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 127.
[2020-08-18 21:15:27,685 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 127 states.
[2020-08-18 21:15:27,686 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions.
[2020-08-18 21:15:27,686 INFO  L78                 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 49
[2020-08-18 21:15:27,687 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 21:15:27,687 INFO  L479      AbstractCegarLoop]: Abstraction has 127 states and 174 transitions.
[2020-08-18 21:15:27,687 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 21:15:27,687 INFO  L276                IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions.
[2020-08-18 21:15:27,689 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2020-08-18 21:15:27,689 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 21:15:27,689 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 21:15:27,689 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 21:15:27,689 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 21:15:27,690 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 21:15:27,690 INFO  L82        PathProgramCache]: Analyzing trace with hash 55895190, now seen corresponding path program 4 times
[2020-08-18 21:15:27,690 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 21:15:27,690 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82959617]
[2020-08-18 21:15:27,691 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 21:15:27,725 ERROR L271   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2020-08-18 21:15:27,725 WARN  L168   FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2020-08-18 21:15:27,726 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-18 21:15:27,730 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 21:15:27,753 WARN  L231   ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2020-08-18 21:15:27,754 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:15:27 BoogieIcfgContainer
[2020-08-18 21:15:27,754 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-18 21:15:27,756 INFO  L168              Benchmark]: Toolchain (without parser) took 11375.56 ms. Allocated memory was 140.5 MB in the beginning and 315.1 MB in the end (delta: 174.6 MB). Free memory was 102.4 MB in the beginning and 186.0 MB in the end (delta: -83.6 MB). Peak memory consumption was 91.0 MB. Max. memory is 7.1 GB.
[2020-08-18 21:15:27,765 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-08-18 21:15:27,766 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 555.73 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 173.6 MB in the end (delta: -71.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB.
[2020-08-18 21:15:27,767 INFO  L168              Benchmark]: Boogie Preprocessor took 90.06 ms. Allocated memory is still 203.4 MB. Free memory was 173.6 MB in the beginning and 168.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB.
[2020-08-18 21:15:27,767 INFO  L168              Benchmark]: RCFGBuilder took 1191.27 ms. Allocated memory is still 203.4 MB. Free memory was 168.8 MB in the beginning and 106.5 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB.
[2020-08-18 21:15:27,771 INFO  L168              Benchmark]: TraceAbstraction took 9533.42 ms. Allocated memory was 203.4 MB in the beginning and 315.1 MB in the end (delta: 111.7 MB). Free memory was 105.9 MB in the beginning and 186.0 MB in the end (delta: -80.1 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB.
[2020-08-18 21:15:27,777 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 555.73 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 173.6 MB in the end (delta: -71.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 90.06 ms. Allocated memory is still 203.4 MB. Free memory was 173.6 MB in the beginning and 168.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1191.27 ms. Allocated memory is still 203.4 MB. Free memory was 168.8 MB in the beginning and 106.5 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 9533.42 ms. Allocated memory was 203.4 MB in the beginning and 315.1 MB in the end (delta: 111.7 MB). Free memory was 105.9 MB in the beginning and 186.0 MB in the end (delta: -80.1 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - UnprovableResult [Line: 461]: Unable to prove that call of __VERIFIER_error() unreachable
    Unable to prove that call of __VERIFIER_error() unreachable
 Reason: unable to decide satisfiability of path constraint. 
Possible FailurePath: 
[L179]              unsigned int  Id_MCDC_104;
[L180]              UINT16 Id_MCDC_105;
[L181]              UINT16 Id_MCDC_106;
[L182]              Od_IndexTable* Id_MCDC_107;
[L183]              Od_IndexTable* Id_MCDC_108;
[L184]              Od_IndexTable* Id_MCDC_109;
[L185]              Od_IndexTable* Id_MCDC_110;
[L186]              Od_IndexTable* Id_MCDC_111;
[L187]              UINT32 Id_MCDC_112 [4];
[L188]              CanOpenNode Id_MCDC_113;
[L189]              UINT32 Id_MCDC_114=0;
[L427]              void * Id_MCDC_143;
[L428]              void * Id_MCDC_144;
[L429]              void * Id_MCDC_145;
[L430]              void * Id_MCDC_146;
[L431]              void * Id_MCDC_147;
[L432]              void * Id_MCDC_148;
[L433]              int  Id_MCDC_149;
[L434]              int  Id_MCDC_150;
[L435]              int  Id_MCDC_151;
[L436]              int  Id_MCDC_152;
[L437]              int  Id_MCDC_153;
[L438]              int  Id_MCDC_154;
[L439]              int  Id_MCDC_155;
[L440]              short  Id_MCDC_156;
[L441]              short  Id_MCDC_157;
[L442]              FILE* Id_MCDC_158;
[L443]              unsigned short  Id_MCDC_159;
[L444]              unsigned short  Id_MCDC_160;
[L445]              unsigned short  Id_MCDC_161=0;
[L446]              unsigned short  Id_MCDC_162=0;
[L447]              char  Id_MCDC_163;
[L448]              char  Id_MCDC_164;
[L449]              Id_MCDC_158 = fopen("in.eds", "r")
[L450]  COND FALSE  !(Id_MCDC_158 == (( void * ) 0))
[L455]  CALL        Id_MCDC_100()
[L420]              int  Id_MCDC_141;
[L421]              void * Id_MCDC_142;
[L422]  CALL        Id_MCDC_99()
[L400]              CHAR Id_MCDC_139 [4]={0, 0, 0, 0};
[L401]              UINT32 Id_MCDC_140=0;
[L402]              Id_MCDC_113.Id_MCDC_66 = ( PDO_Buffer* ) malloc(372)
[L403]  CALL        Id_MCDC_97()
[L331]              UINT32 Id_MCDC_123;
[L332]              UINT32 Id_MCDC_124;
[L333]              UINT32 Id_MCDC_125;
[L334]              UINT32 Id_MCDC_126;
[L335]              UINT32 Id_MCDC_127;
[L336]              UINT32 Id_MCDC_128=0x00;
[L337]              UINT16 Id_MCDC_129;
[L338]              UINT32 Id_MCDC_130=0x00;
[L339]              UINT32 Id_MCDC_131=0x00;
[L340]              UINT8 Id_MCDC_35=0;
[L341]              UINT8 Id_MCDC_132=0;
[L342]              UINT8 Id_MCDC_36=0;
[L343]              UINT8 Id_MCDC_133=0;
[L344]              UINT8 Id_MCDC_134=0x00;
[L345]              INT32 Id_MCDC_135;
[L346]              void * Id_MCDC_136;
[L347]              UINT32* Id_MCDC_137;
[L348]              UINT16 Id_MCDC_138;
[L349]              Id_MCDC_123 = 0x1800
[L350]              Id_MCDC_132 = 0
[L350]  COND TRUE   Id_MCDC_132 < 4
[L352]              Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132
[L350]              Id_MCDC_132++
[L350]  COND TRUE   Id_MCDC_132 < 4
[L352]              Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132
[L350]              Id_MCDC_132++
[L350]  COND TRUE   Id_MCDC_132 < 4
[L352]              Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132
[L350]              Id_MCDC_132++
[L350]  COND TRUE   Id_MCDC_132 < 4
[L352]              Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132
[L350]              Id_MCDC_132++
[L350]  COND FALSE  !(Id_MCDC_132 < 4)
[L354]  COND FALSE  !(Id_MCDC_123 <= 0x1803)
[L396]              return 0x00;
[L336]              UINT32 Id_MCDC_128=0x00;
[L396]              return 0x00;
[L338]              UINT32 Id_MCDC_130=0x00;
[L396]              return 0x00;
[L339]              UINT32 Id_MCDC_131=0x00;
[L396]              return 0x00;
[L396]              return 0x00;
[L396]              return 0x00;
[L403]  RET         Id_MCDC_97()
[L404]              Id_MCDC_140 = 0
[L404]  COND FALSE  !(Id_MCDC_140 < 4)
[L415]  CALL        Id_MCDC_95(4, Id_MCDC_139)
[L280]              UINT32 Id_MCDC_121=0;
[L281]              UINT32 Id_MCDC_122=0;
[L282]  COND FALSE  !(Id_MCDC_93 < 2)
[L286]  COND FALSE  !(Id_MCDC_93 != 2)
[L292]  EXPR        Id_MCDC_94[1]
[L292]              Id_MCDC_122 = Id_MCDC_94[1]
[L294]  EXPR        Id_MCDC_94[0]
[L294]  CALL, EXPR  Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122)
[L249]              UINT32 Id_MCDC_117=0;
[L250]              UINT32 Id_MCDC_118=0;
[L251]              UINT32 Id_MCDC_119=1;
[L252]              UINT32 Id_MCDC_120=0;
[L253]  COND FALSE  !(Id_MCDC_90 > Id_MCDC_91)
[L259]  COND FALSE  !(Id_MCDC_90 < Id_MCDC_91)
[L266]              return Id_MCDC_90;
[L294]  RET, EXPR   Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122)
[L294]              Id_MCDC_121 = Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122)
[L295]  CALL        avoid_zero(Id_MCDC_121 != 0)
[L9]    COND FALSE  !(!y)
[L295]  RET         avoid_zero(Id_MCDC_121 != 0)
[L296]  EXPR        Id_MCDC_94[0]
[L296]  EXPR        ( long long  ) (Id_MCDC_94[0] * Id_MCDC_122) >= 0 && ( long long  ) (Id_MCDC_94[0] * Id_MCDC_122) <= 4294967295
[L296]  EXPR        Id_MCDC_94[0]
[L296]  EXPR        ( long long  ) (Id_MCDC_94[0] * Id_MCDC_122) >= 0 && ( long long  ) (Id_MCDC_94[0] * Id_MCDC_122) <= 4294967295
[L296]  CALL        __VERIFIER_assert(( long long  ) (Id_MCDC_94[0] * Id_MCDC_122) >= 0 && ( long long  ) (Id_MCDC_94[0] * Id_MCDC_122) <= 4294967295)
[L459]  COND TRUE   ! (Id_MCDC_103)
[L461]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 13 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 9.4s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 705 SDtfs, 1026 SDslu, 802 SDs, 0 SdLazy, 1862 SolverSat, 224 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 195 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 33980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/14 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 could not prove your program: unable to determine feasibility of some traces
Received shutdown request...