/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 produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c


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


This is Ultimate 0.1.25-eb0fd7c
[2020-09-21 11:32:29,643 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-21 11:32:29,647 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-21 11:32:29,674 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-21 11:32:29,675 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-21 11:32:29,683 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-21 11:32:29,686 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-21 11:32:29,688 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-21 11:32:29,691 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-21 11:32:29,693 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-21 11:32:29,694 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-21 11:32:29,697 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-21 11:32:29,698 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-21 11:32:29,702 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-21 11:32:29,704 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-21 11:32:29,706 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-21 11:32:29,707 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-21 11:32:29,708 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-21 11:32:29,710 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-21 11:32:29,718 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-21 11:32:29,721 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-21 11:32:29,722 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-21 11:32:29,723 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-21 11:32:29,724 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-21 11:32:29,736 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-21 11:32:29,736 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-21 11:32:29,736 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-21 11:32:29,743 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-21 11:32:29,743 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-21 11:32:29,746 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-21 11:32:29,747 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-21 11:32:29,747 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-21 11:32:29,748 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-21 11:32:29,753 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-21 11:32:29,754 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-21 11:32:29,755 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-21 11:32:29,755 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-21 11:32:29,756 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-21 11:32:29,756 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-21 11:32:29,757 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-21 11:32:29,758 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-21 11:32:29,759 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
[2020-09-21 11:32:29,813 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-21 11:32:29,813 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-21 11:32:29,816 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-21 11:32:29,816 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-21 11:32:29,816 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-21 11:32:29,816 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-21 11:32:29,817 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-21 11:32:29,817 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-21 11:32:29,817 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-21 11:32:29,817 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-21 11:32:29,818 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-21 11:32:29,819 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-21 11:32:29,819 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-21 11:32:29,819 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-21 11:32:29,820 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-21 11:32:29,820 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-21 11:32:29,820 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-21 11:32:29,820 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-21 11:32:29,820 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-21 11:32:29,821 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-21 11:32:29,821 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-21 11:32:29,821 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-21 11:32:29,821 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-21 11:32:29,821 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-21 11:32:29,822 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-21 11:32:29,822 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-21 11:32:29,822 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-21 11:32:29,822 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-21 11:32:29,822 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-21 11:32:29,823 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 -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true;
[2020-09-21 11:32:30,314 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-21 11:32:30,338 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-21 11:32:30,342 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-21 11:32:30,344 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-21 11:32:30,344 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-21 11:32:30,346 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c
[2020-09-21 11:32:30,439 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78e0c6974/8d86fe1d2d024d519caf8440897dc42a/FLAG8b8ed786a
[2020-09-21 11:32:31,041 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-21 11:32:31,044 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c
[2020-09-21 11:32:31,058 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78e0c6974/8d86fe1d2d024d519caf8440897dc42a/FLAG8b8ed786a
[2020-09-21 11:32:31,316 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78e0c6974/8d86fe1d2d024d519caf8440897dc42a
[2020-09-21 11:32:31,330 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-21 11:32:31,336 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-21 11:32:31,337 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-21 11:32:31,337 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-21 11:32:31,341 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-21 11:32:31,342 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:31" (1/1) ...
[2020-09-21 11:32:31,347 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ccd168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31, skipping insertion in model container
[2020-09-21 11:32:31,347 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:31" (1/1) ...
[2020-09-21 11:32:31,356 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-21 11:32:31,408 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-21 11:32:31,838 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-21 11:32:31,853 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-21 11:32:31,930 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-21 11:32:31,959 INFO  L208         MainTranslator]: Completed translation
[2020-09-21 11:32:31,960 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31 WrapperNode
[2020-09-21 11:32:31,960 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-21 11:32:31,961 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-21 11:32:31,961 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-21 11:32:31,961 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-21 11:32:31,977 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31" (1/1) ...
[2020-09-21 11:32:31,978 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31" (1/1) ...
[2020-09-21 11:32:32,016 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31" (1/1) ...
[2020-09-21 11:32:32,017 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31" (1/1) ...
[2020-09-21 11:32:32,051 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31" (1/1) ...
[2020-09-21 11:32:32,063 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31" (1/1) ...
[2020-09-21 11:32:32,068 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31" (1/1) ...
[2020-09-21 11:32:32,075 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-21 11:32:32,076 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-21 11:32:32,076 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-21 11:32:32,077 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-21 11:32:32,083 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31" (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
[2020-09-21 11:32:32,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-21 11:32:32,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-21 11:32:32,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-21 11:32:32,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure avoid_zero
[2020-09-21 11:32:32,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_89
[2020-09-21 11:32:32,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_92
[2020-09-21 11:32:32,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_95
[2020-09-21 11:32:32,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_96
[2020-09-21 11:32:32,206 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_97
[2020-09-21 11:32:32,207 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_99
[2020-09-21 11:32:32,207 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_100
[2020-09-21 11:32:32,208 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-21 11:32:32,208 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-21 11:32:32,208 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-21 11:32:32,208 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-21 11:32:32,208 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-21 11:32:32,209 INFO  L130     BoogieDeclarations]: Found specification of procedure avoid_zero
[2020-09-21 11:32:32,209 INFO  L130     BoogieDeclarations]: Found specification of procedure strcmp
[2020-09-21 11:32:32,209 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_89
[2020-09-21 11:32:32,211 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_92
[2020-09-21 11:32:32,211 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_95
[2020-09-21 11:32:32,211 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_96
[2020-09-21 11:32:32,211 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_97
[2020-09-21 11:32:32,211 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-21 11:32:32,211 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_99
[2020-09-21 11:32:32,212 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_100
[2020-09-21 11:32:32,212 INFO  L130     BoogieDeclarations]: Found specification of procedure fopen
[2020-09-21 11:32:32,212 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-21 11:32:32,212 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-21 11:32:32,212 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-21 11:32:32,212 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-21 11:32:32,212 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-21 11:32:32,213 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-21 11:32:32,213 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-21 11:32:32,213 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-21 11:32:32,213 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-21 11:32:32,213 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-21 11:32:32,213 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-21 11:32:32,213 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2020-09-21 11:32:32,213 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-21 11:32:33,277 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-21 11:32:33,278 INFO  L295             CfgBuilder]: Removed 7 assume(true) statements.
[2020-09-21 11:32:33,286 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:33 BoogieIcfgContainer
[2020-09-21 11:32:33,286 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-21 11:32:33,289 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-21 11:32:33,289 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-21 11:32:33,293 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-21 11:32:33,293 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:32:31" (1/3) ...
[2020-09-21 11:32:33,294 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa6396c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:33, skipping insertion in model container
[2020-09-21 11:32:33,295 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31" (2/3) ...
[2020-09-21 11:32:33,295 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa6396c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:33, skipping insertion in model container
[2020-09-21 11:32:33,296 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:33" (3/3) ...
[2020-09-21 11:32:33,298 INFO  L109   eAbstractionObserver]: Analyzing ICFG ofuf_2.c
[2020-09-21 11:32:33,311 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-21 11:32:33,322 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-21 11:32:33,343 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-21 11:32:33,374 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-21 11:32:33,375 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-21 11:32:33,375 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-21 11:32:33,375 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-21 11:32:33,375 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-21 11:32:33,375 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-21 11:32:33,375 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-21 11:32:33,376 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-21 11:32:33,403 INFO  L276                IsEmpty]: Start isEmpty. Operand 128 states.
[2020-09-21 11:32:33,414 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-09-21 11:32:33,415 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-21 11:32:33,416 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]
[2020-09-21 11:32:33,416 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-21 11:32:33,424 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-21 11:32:33,425 INFO  L82        PathProgramCache]: Analyzing trace with hash 1652927245, now seen corresponding path program 1 times
[2020-09-21 11:32:33,436 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-21 11:32:33,437 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546099358]
[2020-09-21 11:32:33,437 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-21 11:32:33,767 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:33,809 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:33,809 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:33,809 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:33,809 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:33,810 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 60
[2020-09-21 11:32:33,810 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:33,810 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 36
[2020-09-21 11:32:33,810 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:33,811 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-21 11:32:33,811 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 25
[2020-09-21 11:32:33,811 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-09-21 11:32:33,811 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-21 11:32:34,077 WARN  L193               SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2020-09-21 11:32:34,079 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-21 11:32:34,088 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:34,089 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:34,090 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:34,090 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:34,090 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:34,090 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-21 11:32:34,091 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:34,091 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:34,091 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:34,091 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:34,092 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-21 11:32:34,093 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:34,093 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-21 11:32:34,187 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-21 11:32:34,207 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:34,239 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:34,239 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:34,240 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:34,240 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:34,240 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-21 11:32:34,240 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:34,241 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-09-21 11:32:34,241 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:34,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-21 11:32:34,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-21 11:32:34,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-09-21 11:32:34,242 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:34,303 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-09-21 11:32:34,305 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:34,306 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:34,306 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:34,306 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:34,307 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:34,307 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-21 11:32:34,307 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:34,307 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:34,308 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:34,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:34,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 4
[2020-09-21 11:32:34,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:34,309 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:34,318 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-21 11:32:34,319 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546099358]
[2020-09-21 11:32:34,321 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-21 11:32:34,322 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-21 11:32:34,323 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977842499]
[2020-09-21 11:32:34,329 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-21 11:32:34,330 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-21 11:32:34,348 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-21 11:32:34,349 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-21 11:32:34,352 INFO  L87              Difference]: Start difference. First operand 128 states. Second operand 5 states.
[2020-09-21 11:32:34,522 WARN  L193               SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-09-21 11:32:35,610 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-21 11:32:35,611 INFO  L93              Difference]: Finished difference Result 264 states and 405 transitions.
[2020-09-21 11:32:35,612 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-21 11:32:35,614 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 39
[2020-09-21 11:32:35,614 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-21 11:32:35,632 INFO  L225             Difference]: With dead ends: 264
[2020-09-21 11:32:35,633 INFO  L226             Difference]: Without dead ends: 140
[2020-09-21 11:32:35,639 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-21 11:32:35,657 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2020-09-21 11:32:35,707 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120.
[2020-09-21 11:32:35,708 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 120 states.
[2020-09-21 11:32:35,711 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions.
[2020-09-21 11:32:35,713 INFO  L78                 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 39
[2020-09-21 11:32:35,714 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-21 11:32:35,714 INFO  L479      AbstractCegarLoop]: Abstraction has 120 states and 166 transitions.
[2020-09-21 11:32:35,714 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-21 11:32:35,714 INFO  L276                IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions.
[2020-09-21 11:32:35,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-09-21 11:32:35,718 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-21 11:32:35,718 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]
[2020-09-21 11:32:35,719 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-21 11:32:35,719 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-21 11:32:35,719 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-21 11:32:35,720 INFO  L82        PathProgramCache]: Analyzing trace with hash -296822387, now seen corresponding path program 1 times
[2020-09-21 11:32:35,720 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-21 11:32:35,720 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263174751]
[2020-09-21 11:32:35,720 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-21 11:32:35,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:35,810 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:35,811 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:35,811 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:35,811 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:35,812 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 62
[2020-09-21 11:32:35,812 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:35,812 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-09-21 11:32:35,812 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:35,813 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-21 11:32:35,813 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 25
[2020-09-21 11:32:35,813 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-21 11:32:35,813 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-21 11:32:36,044 WARN  L193               SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2020-09-21 11:32:36,045 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-21 11:32:36,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:36,053 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:36,053 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:36,053 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:36,054 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:36,054 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-21 11:32:36,054 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:36,054 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-21 11:32:36,054 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:36,055 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:36,055 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-21 11:32:36,055 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:36,055 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:36,103 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-21 11:32:36,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:36,150 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:36,150 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:36,151 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:36,151 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:36,151 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 14
[2020-09-21 11:32:36,151 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:36,152 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-09-21 11:32:36,152 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:36,152 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-21 11:32:36,153 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-21 11:32:36,153 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-21 11:32:36,153 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-21 11:32:36,214 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2020-09-21 11:32:36,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:36,217 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:36,217 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:36,217 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:36,218 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:36,219 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-21 11:32:36,219 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:36,219 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:36,219 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:36,220 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:36,220 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 7
[2020-09-21 11:32:36,220 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:36,220 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:36,236 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-21 11:32:36,237 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263174751]
[2020-09-21 11:32:36,237 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-21 11:32:36,237 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-09-21 11:32:36,238 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015587268]
[2020-09-21 11:32:36,240 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-21 11:32:36,240 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-21 11:32:36,240 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-21 11:32:36,241 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-09-21 11:32:36,241 INFO  L87              Difference]: Start difference. First operand 120 states and 166 transitions. Second operand 6 states.
[2020-09-21 11:32:36,359 WARN  L193               SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-09-21 11:32:37,371 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-21 11:32:37,372 INFO  L93              Difference]: Finished difference Result 265 states and 381 transitions.
[2020-09-21 11:32:37,373 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-21 11:32:37,373 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 41
[2020-09-21 11:32:37,373 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-21 11:32:37,376 INFO  L225             Difference]: With dead ends: 265
[2020-09-21 11:32:37,377 INFO  L226             Difference]: Without dead ends: 161
[2020-09-21 11:32:37,379 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-21 11:32:37,380 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 161 states.
[2020-09-21 11:32:37,402 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 122.
[2020-09-21 11:32:37,402 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 122 states.
[2020-09-21 11:32:37,404 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions.
[2020-09-21 11:32:37,404 INFO  L78                 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 41
[2020-09-21 11:32:37,404 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-21 11:32:37,405 INFO  L479      AbstractCegarLoop]: Abstraction has 122 states and 168 transitions.
[2020-09-21 11:32:37,405 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-21 11:32:37,405 INFO  L276                IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions.
[2020-09-21 11:32:37,407 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-09-21 11:32:37,407 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-21 11:32:37,407 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]
[2020-09-21 11:32:37,408 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-21 11:32:37,408 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-21 11:32:37,408 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-21 11:32:37,408 INFO  L82        PathProgramCache]: Analyzing trace with hash -1007450673, now seen corresponding path program 2 times
[2020-09-21 11:32:37,409 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-21 11:32:37,409 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354919815]
[2020-09-21 11:32:37,409 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-21 11:32:37,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:37,478 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:37,478 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:37,479 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:37,479 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:37,479 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 64
[2020-09-21 11:32:37,479 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:37,479 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-09-21 11:32:37,480 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:37,480 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-21 11:32:37,480 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 25
[2020-09-21 11:32:37,480 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-21 11:32:37,480 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:37,614 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-21 11:32:37,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:37,620 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:37,620 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:37,621 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:37,621 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:37,621 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-21 11:32:37,621 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:37,622 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:37,622 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:37,622 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:37,622 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-21 11:32:37,622 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:37,623 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:37,656 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-21 11:32:37,668 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:37,692 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:37,693 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:37,693 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:37,693 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:37,693 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-09-21 11:32:37,694 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:37,694 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-21 11:32:37,694 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:37,694 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-21 11:32:37,694 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-21 11:32:37,695 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-21 11:32:37,695 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:37,764 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-09-21 11:32:37,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:37,766 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:37,766 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:37,767 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:37,767 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:37,767 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-21 11:32:37,767 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:37,768 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:37,768 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:37,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:37,768 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 7
[2020-09-21 11:32:37,769 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:37,769 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:37,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-21 11:32:37,776 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354919815]
[2020-09-21 11:32:37,777 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-21 11:32:37,777 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-21 11:32:37,777 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370539830]
[2020-09-21 11:32:37,778 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-21 11:32:37,778 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-21 11:32:37,778 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-21 11:32:37,779 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-21 11:32:37,779 INFO  L87              Difference]: Start difference. First operand 122 states and 168 transitions. Second operand 7 states.
[2020-09-21 11:32:37,894 WARN  L193               SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-09-21 11:32:39,628 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-21 11:32:39,629 INFO  L93              Difference]: Finished difference Result 286 states and 414 transitions.
[2020-09-21 11:32:39,630 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-21 11:32:39,630 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 43
[2020-09-21 11:32:39,630 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-21 11:32:39,633 INFO  L225             Difference]: With dead ends: 286
[2020-09-21 11:32:39,633 INFO  L226             Difference]: Without dead ends: 182
[2020-09-21 11:32:39,635 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-21 11:32:39,635 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 182 states.
[2020-09-21 11:32:39,655 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 124.
[2020-09-21 11:32:39,655 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 124 states.
[2020-09-21 11:32:39,656 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions.
[2020-09-21 11:32:39,657 INFO  L78                 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 43
[2020-09-21 11:32:39,675 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-21 11:32:39,675 INFO  L479      AbstractCegarLoop]: Abstraction has 124 states and 170 transitions.
[2020-09-21 11:32:39,675 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-21 11:32:39,675 INFO  L276                IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions.
[2020-09-21 11:32:39,677 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-09-21 11:32:39,678 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-21 11:32:39,678 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]
[2020-09-21 11:32:39,678 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-21 11:32:39,678 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-21 11:32:39,679 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-21 11:32:39,679 INFO  L82        PathProgramCache]: Analyzing trace with hash -1021433455, now seen corresponding path program 3 times
[2020-09-21 11:32:39,679 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-21 11:32:39,679 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689411991]
[2020-09-21 11:32:39,680 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-21 11:32:39,722 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:39,746 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:39,747 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:39,747 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:39,747 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:39,747 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 66
[2020-09-21 11:32:39,748 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:39,748 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-21 11:32:39,748 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:39,748 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-21 11:32:39,748 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 25
[2020-09-21 11:32:39,749 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-21 11:32:39,749 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:39,895 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-21 11:32:39,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:39,901 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:39,901 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:39,902 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:39,902 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:39,902 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-21 11:32:39,902 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:39,903 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:39,903 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:39,903 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:39,903 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-21 11:32:39,903 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:39,904 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:39,938 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-21 11:32:39,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:39,971 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:39,971 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:39,971 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:39,971 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:39,972 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-21 11:32:39,972 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:39,972 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-09-21 11:32:39,972 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:39,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-21 11:32:39,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-21 11:32:39,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-21 11:32:39,973 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:40,047 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-09-21 11:32:40,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:40,050 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:40,050 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:40,050 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:40,050 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:40,051 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-21 11:32:40,051 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:40,051 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:40,051 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:40,052 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:40,052 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 7
[2020-09-21 11:32:40,052 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:40,052 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:40,058 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-21 11:32:40,059 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689411991]
[2020-09-21 11:32:40,059 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-21 11:32:40,059 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-21 11:32:40,059 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513081785]
[2020-09-21 11:32:40,060 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-21 11:32:40,060 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-21 11:32:40,060 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-21 11:32:40,061 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-09-21 11:32:40,061 INFO  L87              Difference]: Start difference. First operand 124 states and 170 transitions. Second operand 8 states.
[2020-09-21 11:32:40,187 WARN  L193               SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-09-21 11:32:41,816 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-21 11:32:41,816 INFO  L93              Difference]: Finished difference Result 307 states and 447 transitions.
[2020-09-21 11:32:41,817 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-21 11:32:41,817 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 45
[2020-09-21 11:32:41,818 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-21 11:32:41,820 INFO  L225             Difference]: With dead ends: 307
[2020-09-21 11:32:41,820 INFO  L226             Difference]: Without dead ends: 203
[2020-09-21 11:32:41,821 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2020-09-21 11:32:41,822 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 203 states.
[2020-09-21 11:32:41,841 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 126.
[2020-09-21 11:32:41,841 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 126 states.
[2020-09-21 11:32:41,842 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 172 transitions.
[2020-09-21 11:32:41,843 INFO  L78                 Accepts]: Start accepts. Automaton has 126 states and 172 transitions. Word has length 45
[2020-09-21 11:32:41,843 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-21 11:32:41,843 INFO  L479      AbstractCegarLoop]: Abstraction has 126 states and 172 transitions.
[2020-09-21 11:32:41,843 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-21 11:32:41,843 INFO  L276                IsEmpty]: Start isEmpty. Operand 126 states and 172 transitions.
[2020-09-21 11:32:41,845 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-09-21 11:32:41,845 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-21 11:32:41,845 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]
[2020-09-21 11:32:41,845 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-21 11:32:41,846 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-21 11:32:41,846 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-21 11:32:41,846 INFO  L82        PathProgramCache]: Analyzing trace with hash -1573985069, now seen corresponding path program 4 times
[2020-09-21 11:32:41,846 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-21 11:32:41,847 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866132173]
[2020-09-21 11:32:41,847 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-21 11:32:41,890 ERROR L271   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2020-09-21 11:32:41,890 WARN  L168   FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2020-09-21 11:32:41,891 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-21 11:32:41,896 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-21 11:32:41,920 WARN  L231   ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2020-09-21 11:32:41,921 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:32:41 BoogieIcfgContainer
[2020-09-21 11:32:41,921 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-21 11:32:41,923 INFO  L168              Benchmark]: Toolchain (without parser) took 10591.67 ms. Allocated memory was 140.5 MB in the beginning and 323.5 MB in the end (delta: 183.0 MB). Free memory was 100.9 MB in the beginning and 175.3 MB in the end (delta: -74.5 MB). Peak memory consumption was 108.5 MB. Max. memory is 7.1 GB.
[2020-09-21 11:32:41,924 INFO  L168              Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-21 11:32:41,925 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 624.03 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 100.2 MB in the beginning and 172.2 MB in the end (delta: -71.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB.
[2020-09-21 11:32:41,925 INFO  L168              Benchmark]: Boogie Preprocessor took 114.80 ms. Allocated memory is still 201.9 MB. Free memory was 172.2 MB in the beginning and 168.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
[2020-09-21 11:32:41,926 INFO  L168              Benchmark]: RCFGBuilder took 1210.08 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 106.3 MB in the end (delta: 61.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB.
[2020-09-21 11:32:41,927 INFO  L168              Benchmark]: TraceAbstraction took 8632.40 ms. Allocated memory was 201.9 MB in the beginning and 323.5 MB in the end (delta: 121.6 MB). Free memory was 105.7 MB in the beginning and 175.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB.
[2020-09-21 11:32:41,931 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.76 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 624.03 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 100.2 MB in the beginning and 172.2 MB in the end (delta: -71.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 114.80 ms. Allocated memory is still 201.9 MB. Free memory was 172.2 MB in the beginning and 168.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1210.08 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 106.3 MB in the end (delta: 61.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 8632.40 ms. Allocated memory was 201.9 MB in the beginning and 323.5 MB in the end (delta: 121.6 MB). Free memory was 105.7 MB in the beginning and 175.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 52.0 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        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 TRUE   Id_MCDC_90 > Id_MCDC_91
[L255]              Id_MCDC_117 = Id_MCDC_90
[L256]              Id_MCDC_118 = Id_MCDC_91
[L268]  COND TRUE   Id_MCDC_119 != 0
[L270]  CALL        avoid_zero(Id_MCDC_118 != 0)
[L9]    COND FALSE  !(!y)
[L270]  RET         avoid_zero(Id_MCDC_118 != 0)
[L271]              Id_MCDC_120 = ( UINT32 ) (Id_MCDC_117 / Id_MCDC_118)
[L272]  CALL        __VERIFIER_assert(( long long  ) (Id_MCDC_117 - (Id_MCDC_120 * Id_MCDC_118)) >= 0 && ( long long  ) (Id_MCDC_117 - (Id_MCDC_120 * Id_MCDC_118)) <= 4294967295)
[L459]  COND TRUE   ! (Id_MCDC_103)
[L461]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 13 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 8.5s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 705 SDtfs, 1012 SDslu, 808 SDs, 0 SdLazy, 1839 SolverSat, 222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred 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, 194 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 31276 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...