/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_1.c


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


This is Ultimate 0.1.25-eb0fd7c
[2020-09-21 11:32:29,159 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-21 11:32:29,165 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-21 11:32:29,214 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-21 11:32:29,216 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-21 11:32:29,229 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-21 11:32:29,230 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-21 11:32:29,234 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-21 11:32:29,235 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-21 11:32:29,238 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-21 11:32:29,241 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-21 11:32:29,242 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-21 11:32:29,242 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-21 11:32:29,244 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-21 11:32:29,247 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-21 11:32:29,249 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-21 11:32:29,251 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-21 11:32:29,253 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-21 11:32:29,256 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-21 11:32:29,263 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-21 11:32:29,265 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-21 11:32:29,266 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-21 11:32:29,270 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-21 11:32:29,271 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-21 11:32:29,274 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-21 11:32:29,274 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-21 11:32:29,274 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-21 11:32:29,278 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-21 11:32:29,279 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-21 11:32:29,280 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-21 11:32:29,280 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-21 11:32:29,281 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-21 11:32:29,282 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-21 11:32:29,283 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-21 11:32:29,284 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-21 11:32:29,284 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-21 11:32:29,285 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-21 11:32:29,286 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-21 11:32:29,286 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-21 11:32:29,287 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-21 11:32:29,289 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-21 11:32:29,290 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 11:32:29,338 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-21 11:32:29,338 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-21 11:32:29,341 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-21 11:32:29,341 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-21 11:32:29,341 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-21 11:32:29,341 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-21 11:32:29,342 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-21 11:32:29,342 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-21 11:32:29,342 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-21 11:32:29,343 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-21 11:32:29,344 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-21 11:32:29,344 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-21 11:32:29,344 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-21 11:32:29,345 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-21 11:32:29,345 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-21 11:32:29,345 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-21 11:32:29,345 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-21 11:32:29,346 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-21 11:32:29,346 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-21 11:32:29,346 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-21 11:32:29,346 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-21 11:32:29,347 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-21 11:32:29,347 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-21 11:32:29,347 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-21 11:32:29,347 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-21 11:32:29,348 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-21 11:32:29,348 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-21 11:32:29,348 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-21 11:32:29,348 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-21 11:32:29,348 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 11:32:29,818 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-21 11:32:29,844 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-21 11:32:29,851 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-21 11:32:29,853 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-21 11:32:29,853 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-21 11:32:29,855 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c
[2020-09-21 11:32:29,938 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c09c0f11/29ce4871474f499383f5d80eb941b28c/FLAG0beaad424
[2020-09-21 11:32:30,577 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-21 11:32:30,578 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c
[2020-09-21 11:32:30,590 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c09c0f11/29ce4871474f499383f5d80eb941b28c/FLAG0beaad424
[2020-09-21 11:32:30,844 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c09c0f11/29ce4871474f499383f5d80eb941b28c
[2020-09-21 11:32:30,856 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-21 11:32:30,861 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-21 11:32:30,862 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-21 11:32:30,863 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-21 11:32:30,867 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-21 11:32:30,868 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:30" (1/1) ...
[2020-09-21 11:32:30,872 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1d4b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:30, skipping insertion in model container
[2020-09-21 11:32:30,873 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:32:30" (1/1) ...
[2020-09-21 11:32:30,881 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-21 11:32:30,933 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-21 11:32:31,356 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-21 11:32:31,370 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-21 11:32:31,458 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-21 11:32:31,491 INFO  L208         MainTranslator]: Completed translation
[2020-09-21 11:32:31,491 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:32:31 WrapperNode
[2020-09-21 11:32:31,491 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-21 11:32:31,492 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-21 11:32:31,493 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-21 11:32:31,493 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-21 11:32:31,506 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 11:32:31,507 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 11:32:31,529 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 11:32:31,530 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 11:32:31,564 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 11:32:31,586 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 11:32:31,591 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 11:32:31,599 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-21 11:32:31,599 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-21 11:32:31,600 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-21 11:32:31,600 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-21 11:32:31,601 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 11:32:31,688 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-21 11:32:31,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-21 11:32:31,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-21 11:32:31,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure avoid_zero
[2020-09-21 11:32:31,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_107
[2020-09-21 11:32:31,689 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_110
[2020-09-21 11:32:31,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_113
[2020-09-21 11:32:31,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_114
[2020-09-21 11:32:31,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_115
[2020-09-21 11:32:31,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_117
[2020-09-21 11:32:31,690 INFO  L138     BoogieDeclarations]: Found implementation of procedure Id_MCDC_118
[2020-09-21 11:32:31,691 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-21 11:32:31,691 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-21 11:32:31,691 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-21 11:32:31,691 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-21 11:32:31,691 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-21 11:32:31,692 INFO  L130     BoogieDeclarations]: Found specification of procedure avoid_zero
[2020-09-21 11:32:31,692 INFO  L130     BoogieDeclarations]: Found specification of procedure strcmp
[2020-09-21 11:32:31,692 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_107
[2020-09-21 11:32:31,692 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_110
[2020-09-21 11:32:31,693 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_113
[2020-09-21 11:32:31,693 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_114
[2020-09-21 11:32:31,693 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_115
[2020-09-21 11:32:31,693 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-21 11:32:31,693 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_117
[2020-09-21 11:32:31,694 INFO  L130     BoogieDeclarations]: Found specification of procedure Id_MCDC_118
[2020-09-21 11:32:31,694 INFO  L130     BoogieDeclarations]: Found specification of procedure fopen
[2020-09-21 11:32:31,694 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-21 11:32:31,694 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-21 11:32:31,694 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-21 11:32:31,694 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-21 11:32:31,695 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-21 11:32:31,695 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-21 11:32:31,695 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-21 11:32:31,695 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-21 11:32:31,695 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-21 11:32:31,695 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-21 11:32:31,696 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-21 11:32:31,696 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2020-09-21 11:32:31,696 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-21 11:32:32,659 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-21 11:32:32,660 INFO  L295             CfgBuilder]: Removed 7 assume(true) statements.
[2020-09-21 11:32:32,666 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:32 BoogieIcfgContainer
[2020-09-21 11:32:32,667 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-21 11:32:32,668 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-21 11:32:32,669 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-21 11:32:32,673 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-21 11:32:32,673 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:32:30" (1/3) ...
[2020-09-21 11:32:32,674 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32377d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:32, skipping insertion in model container
[2020-09-21 11:32:32,674 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 11:32:32,675 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32377d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:32:32, skipping insertion in model container
[2020-09-21 11:32:32,675 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:32:32" (3/3) ...
[2020-09-21 11:32:32,678 INFO  L109   eAbstractionObserver]: Analyzing ICFG ofuf_1.c
[2020-09-21 11:32:32,691 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-21 11:32:32,702 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-21 11:32:32,738 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-21 11:32:32,778 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-21 11:32:32,778 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-21 11:32:32,778 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-21 11:32:32,778 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-21 11:32:32,778 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-21 11:32:32,779 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-21 11:32:32,779 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-21 11:32:32,779 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-21 11:32:32,807 INFO  L276                IsEmpty]: Start isEmpty. Operand 127 states.
[2020-09-21 11:32:32,819 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-09-21 11:32:32,820 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-21 11:32:32,821 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]
[2020-09-21 11:32:32,822 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-21 11:32:32,830 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-21 11:32:32,830 INFO  L82        PathProgramCache]: Analyzing trace with hash 1921771477, now seen corresponding path program 1 times
[2020-09-21 11:32:32,841 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-21 11:32:32,841 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807711032]
[2020-09-21 11:32:32,842 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-21 11:32:33,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:33,153 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:33,153 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:33,153 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:33,154 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:33,154 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-09-21 11:32:33,154 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:33,154 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 33
[2020-09-21 11:32:33,155 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:33,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-21 11:32:33,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 25
[2020-09-21 11:32:33,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-09-21 11:32:33,156 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:33,434 WARN  L193               SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2020-09-21 11:32:33,441 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-21 11:32:33,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:33,457 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:33,458 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:33,458 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:33,458 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:33,459 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-21 11:32:33,459 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:33,459 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:33,459 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:33,459 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:33,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-21 11:32:33,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:33,460 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:33,540 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-21 11:32:33,566 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:33,595 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:33,595 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:33,596 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:33,596 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:33,596 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-21 11:32:33,596 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:33,597 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 28
[2020-09-21 11:32:33,597 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:33,597 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-21 11:32:33,597 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-21 11:32:33,598 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-09-21 11:32:33,598 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:33,658 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-09-21 11:32:33,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:33,663 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:33,663 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:33,664 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:33,664 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:33,664 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-21 11:32:33,664 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:33,666 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-21 11:32:33,667 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:33,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:33,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 4
[2020-09-21 11:32:33,668 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:33,668 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-21 11:32:33,683 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 11:32:33,684 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807711032]
[2020-09-21 11:32:33,686 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-21 11:32:33,687 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-21 11:32:33,688 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993197644]
[2020-09-21 11:32:33,694 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-21 11:32:33,694 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-21 11:32:33,712 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-21 11:32:33,714 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-21 11:32:33,717 INFO  L87              Difference]: Start difference. First operand 127 states. Second operand 5 states.
[2020-09-21 11:32:33,893 WARN  L193               SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-09-21 11:32:34,868 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-21 11:32:34,869 INFO  L93              Difference]: Finished difference Result 262 states and 403 transitions.
[2020-09-21 11:32:34,869 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-21 11:32:34,871 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 38
[2020-09-21 11:32:34,872 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-21 11:32:34,889 INFO  L225             Difference]: With dead ends: 262
[2020-09-21 11:32:34,889 INFO  L226             Difference]: Without dead ends: 139
[2020-09-21 11:32:34,896 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 11:32:34,919 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 139 states.
[2020-09-21 11:32:34,971 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119.
[2020-09-21 11:32:34,973 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 119 states.
[2020-09-21 11:32:34,975 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions.
[2020-09-21 11:32:34,977 INFO  L78                 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 38
[2020-09-21 11:32:34,978 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-21 11:32:34,978 INFO  L479      AbstractCegarLoop]: Abstraction has 119 states and 165 transitions.
[2020-09-21 11:32:34,978 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-21 11:32:34,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions.
[2020-09-21 11:32:34,981 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2020-09-21 11:32:34,982 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-21 11:32:34,982 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-21 11:32:34,982 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-21 11:32:34,983 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-21 11:32:34,983 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-21 11:32:34,983 INFO  L82        PathProgramCache]: Analyzing trace with hash -503826635, now seen corresponding path program 1 times
[2020-09-21 11:32:34,983 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-21 11:32:34,984 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236120886]
[2020-09-21 11:32:34,984 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-21 11:32:35,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:35,051 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:35,052 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:35,052 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:35,052 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:35,052 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 61
[2020-09-21 11:32:35,053 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:35,053 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-09-21 11:32:35,053 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:35,053 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-21 11:32:35,053 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 25
[2020-09-21 11:32:35,054 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-21 11:32:35,054 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:35,228 WARN  L193               SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2020-09-21 11:32:35,229 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-21 11:32:35,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:35,235 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:35,236 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:35,236 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:35,236 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:35,237 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-21 11:32:35,237 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:35,237 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:35,237 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:35,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:35,238 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-21 11:32:35,238 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:35,238 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:35,273 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-21 11:32:35,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:35,302 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:35,302 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:35,303 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:35,303 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:35,303 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 14
[2020-09-21 11:32:35,303 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:35,304 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-09-21 11:32:35,304 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:35,304 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-21 11:32:35,304 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-21 11:32:35,305 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-21 11:32:35,305 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:35,363 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2020-09-21 11:32:35,364 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:35,365 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:35,366 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:35,366 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:35,366 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:35,366 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-21 11:32:35,367 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:35,368 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:35,368 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:35,369 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:35,369 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 7
[2020-09-21 11:32:35,370 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:35,370 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-21 11:32:35,386 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 11:32:35,387 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236120886]
[2020-09-21 11:32:35,387 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-21 11:32:35,387 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-09-21 11:32:35,388 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458858397]
[2020-09-21 11:32:35,390 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-21 11:32:35,391 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-21 11:32:35,391 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-21 11:32:35,391 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-09-21 11:32:35,392 INFO  L87              Difference]: Start difference. First operand 119 states and 165 transitions. Second operand 6 states.
[2020-09-21 11:32:35,509 WARN  L193               SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-09-21 11:32:36,703 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-21 11:32:36,704 INFO  L93              Difference]: Finished difference Result 263 states and 379 transitions.
[2020-09-21 11:32:36,705 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-21 11:32:36,705 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 40
[2020-09-21 11:32:36,706 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-21 11:32:36,709 INFO  L225             Difference]: With dead ends: 263
[2020-09-21 11:32:36,709 INFO  L226             Difference]: Without dead ends: 160
[2020-09-21 11:32:36,711 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 11:32:36,712 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 160 states.
[2020-09-21 11:32:36,732 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 121.
[2020-09-21 11:32:36,733 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 121 states.
[2020-09-21 11:32:36,734 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 167 transitions.
[2020-09-21 11:32:36,734 INFO  L78                 Accepts]: Start accepts. Automaton has 121 states and 167 transitions. Word has length 40
[2020-09-21 11:32:36,735 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-21 11:32:36,735 INFO  L479      AbstractCegarLoop]: Abstraction has 121 states and 167 transitions.
[2020-09-21 11:32:36,735 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-21 11:32:36,735 INFO  L276                IsEmpty]: Start isEmpty. Operand 121 states and 167 transitions.
[2020-09-21 11:32:36,737 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2020-09-21 11:32:36,737 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-21 11:32:36,738 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]
[2020-09-21 11:32:36,738 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-21 11:32:36,738 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-21 11:32:36,738 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-21 11:32:36,739 INFO  L82        PathProgramCache]: Analyzing trace with hash -16428909, now seen corresponding path program 2 times
[2020-09-21 11:32:36,739 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-21 11:32:36,739 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855231751]
[2020-09-21 11:32:36,739 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-21 11:32:36,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:36,807 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:36,808 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:36,808 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:36,808 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:36,808 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 63
[2020-09-21 11:32:36,809 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:36,809 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-21 11:32:36,809 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:36,812 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-21 11:32:36,812 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 25
[2020-09-21 11:32:36,812 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-21 11:32:36,813 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-21 11:32:37,022 WARN  L193               SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2020-09-21 11:32:37,023 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-21 11:32:37,028 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:37,029 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:37,030 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:37,030 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:37,030 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:37,030 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-21 11:32:37,031 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:37,031 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:37,031 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:37,031 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:37,031 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-21 11:32:37,032 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:37,032 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:37,061 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-21 11:32:37,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:37,095 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:37,095 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:37,096 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:37,096 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:37,096 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 16
[2020-09-21 11:32:37,096 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:37,096 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-09-21 11:32:37,097 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:37,097 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-21 11:32:37,097 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-21 11:32:37,097 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-21 11:32:37,097 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:37,201 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-09-21 11:32:37,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:37,204 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:37,205 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:37,205 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:37,206 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:37,206 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-21 11:32:37,206 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:37,206 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-21 11:32:37,207 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:37,207 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:37,207 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 7
[2020-09-21 11:32:37,207 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:37,207 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:37,225 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 11:32:37,225 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855231751]
[2020-09-21 11:32:37,225 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-21 11:32:37,226 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-21 11:32:37,226 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336915637]
[2020-09-21 11:32:37,226 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-21 11:32:37,227 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-21 11:32:37,228 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-21 11:32:37,229 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-21 11:32:37,229 INFO  L87              Difference]: Start difference. First operand 121 states and 167 transitions. Second operand 7 states.
[2020-09-21 11:32:37,411 WARN  L193               SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-09-21 11:32:39,844 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-21 11:32:39,844 INFO  L93              Difference]: Finished difference Result 284 states and 412 transitions.
[2020-09-21 11:32:39,846 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-21 11:32:39,847 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 42
[2020-09-21 11:32:39,847 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-21 11:32:39,849 INFO  L225             Difference]: With dead ends: 284
[2020-09-21 11:32:39,850 INFO  L226             Difference]: Without dead ends: 181
[2020-09-21 11:32:39,851 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-21 11:32:39,852 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 181 states.
[2020-09-21 11:32:39,871 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 123.
[2020-09-21 11:32:39,872 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 123 states.
[2020-09-21 11:32:39,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions.
[2020-09-21 11:32:39,873 INFO  L78                 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 42
[2020-09-21 11:32:39,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-21 11:32:39,874 INFO  L479      AbstractCegarLoop]: Abstraction has 123 states and 169 transitions.
[2020-09-21 11:32:39,874 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-21 11:32:39,874 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions.
[2020-09-21 11:32:39,876 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-09-21 11:32:39,876 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-21 11:32:39,876 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]
[2020-09-21 11:32:39,876 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-21 11:32:39,877 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-21 11:32:39,877 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-21 11:32:39,877 INFO  L82        PathProgramCache]: Analyzing trace with hash 221350513, now seen corresponding path program 3 times
[2020-09-21 11:32:39,877 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-21 11:32:39,877 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291673036]
[2020-09-21 11:32:39,878 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-21 11:32:39,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:39,942 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:39,943 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:39,943 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:39,943 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:39,943 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 65
[2020-09-21 11:32:39,944 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:39,944 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-09-21 11:32:39,944 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:39,944 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-21 11:32:39,944 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 25
[2020-09-21 11:32:39,945 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-21 11:32:39,945 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:40,085 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-21 11:32:40,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:40,090 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:40,090 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:40,091 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:40,091 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:40,091 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-21 11:32:40,091 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:40,091 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:40,092 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:40,092 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:40,092 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-21 11:32:40,092 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:40,092 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:40,122 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-21 11:32:40,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:40,154 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:40,155 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:40,155 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:40,155 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:40,155 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-21 11:32:40,155 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:40,156 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-21 11:32:40,156 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:40,156 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-21 11:32:40,156 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-21 11:32:40,156 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-21 11:32:40,157 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:40,236 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-09-21 11:32:40,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-21 11:32:40,238 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-21 11:32:40,238 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-21 11:32:40,238 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-21 11:32:40,239 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-21 11:32:40,239 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-21 11:32:40,239 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-21 11:32:40,239 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-21 11:32:40,240 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-21 11:32:40,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-21 11:32:40,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 7
[2020-09-21 11:32:40,240 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-21 11:32:40,240 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-21 11:32:40,247 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 11:32:40,248 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291673036]
[2020-09-21 11:32:40,248 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-21 11:32:40,248 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-21 11:32:40,248 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114412586]
[2020-09-21 11:32:40,249 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-21 11:32:40,249 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-21 11:32:40,249 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-21 11:32:40,250 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-09-21 11:32:40,250 INFO  L87              Difference]: Start difference. First operand 123 states and 169 transitions. Second operand 8 states.
[2020-09-21 11:32:40,371 WARN  L193               SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-09-21 11:32:43,990 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-21 11:32:43,990 INFO  L93              Difference]: Finished difference Result 306 states and 446 transitions.
[2020-09-21 11:32:43,991 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-21 11:32:43,991 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 44
[2020-09-21 11:32:43,992 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-21 11:32:43,994 INFO  L225             Difference]: With dead ends: 306
[2020-09-21 11:32:43,995 INFO  L226             Difference]: Without dead ends: 203
[2020-09-21 11:32:43,996 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2020-09-21 11:32:43,997 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 203 states.
[2020-09-21 11:32:44,018 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 125.
[2020-09-21 11:32:44,019 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 125 states.
[2020-09-21 11:32:44,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 171 transitions.
[2020-09-21 11:32:44,020 INFO  L78                 Accepts]: Start accepts. Automaton has 125 states and 171 transitions. Word has length 44
[2020-09-21 11:32:44,020 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-21 11:32:44,021 INFO  L479      AbstractCegarLoop]: Abstraction has 125 states and 171 transitions.
[2020-09-21 11:32:44,021 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-21 11:32:44,021 INFO  L276                IsEmpty]: Start isEmpty. Operand 125 states and 171 transitions.
[2020-09-21 11:32:44,023 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-09-21 11:32:44,023 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-21 11:32:44,023 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]
[2020-09-21 11:32:44,023 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-21 11:32:44,024 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-21 11:32:44,024 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-21 11:32:44,024 INFO  L82        PathProgramCache]: Analyzing trace with hash 1094108367, now seen corresponding path program 4 times
[2020-09-21 11:32:44,024 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-21 11:32:44,025 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712647824]
[2020-09-21 11:32:44,025 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-21 11:32:44,072 ERROR L271   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2020-09-21 11:32:44,072 WARN  L168   FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2020-09-21 11:32:44,073 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-21 11:32:44,078 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-21 11:32:44,104 WARN  L231   ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2020-09-21 11:32:44,104 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:32:44 BoogieIcfgContainer
[2020-09-21 11:32:44,104 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-21 11:32:44,107 INFO  L168              Benchmark]: Toolchain (without parser) took 13248.28 ms. Allocated memory was 147.3 MB in the beginning and 325.6 MB in the end (delta: 178.3 MB). Free memory was 102.2 MB in the beginning and 168.5 MB in the end (delta: -66.3 MB). Peak memory consumption was 111.9 MB. Max. memory is 7.1 GB.
[2020-09-21 11:32:44,107 INFO  L168              Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-21 11:32:44,108 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 629.66 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 101.5 MB in the beginning and 172.9 MB in the end (delta: -71.3 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB.
[2020-09-21 11:32:44,109 INFO  L168              Benchmark]: Boogie Preprocessor took 106.77 ms. Allocated memory is still 202.9 MB. Free memory was 172.9 MB in the beginning and 168.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB.
[2020-09-21 11:32:44,110 INFO  L168              Benchmark]: RCFGBuilder took 1067.35 ms. Allocated memory is still 202.9 MB. Free memory was 168.3 MB in the beginning and 105.7 MB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB.
[2020-09-21 11:32:44,111 INFO  L168              Benchmark]: TraceAbstraction took 11435.96 ms. Allocated memory was 202.9 MB in the beginning and 325.6 MB in the end (delta: 122.7 MB). Free memory was 105.0 MB in the beginning and 168.5 MB in the end (delta: -63.5 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB.
[2020-09-21 11:32:44,115 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.79 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 629.66 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 101.5 MB in the beginning and 172.9 MB in the end (delta: -71.3 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 106.77 ms. Allocated memory is still 202.9 MB. Free memory was 172.9 MB in the beginning and 168.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1067.35 ms. Allocated memory is still 202.9 MB. Free memory was 168.3 MB in the beginning and 105.7 MB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 11435.96 ms. Allocated memory was 202.9 MB in the beginning and 325.6 MB in the end (delta: 122.7 MB). Free memory was 105.0 MB in the beginning and 168.5 MB in the end (delta: -63.5 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - UnprovableResult [Line: 487]: 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: 
[L204]              unsigned int  Id_MCDC_122;
[L205]              UINT16 Id_MCDC_123;
[L206]              UINT16 Id_MCDC_124;
[L207]              Od_IndexTable* Id_MCDC_125;
[L208]              Od_IndexTable* Id_MCDC_126;
[L209]              Od_IndexTable* Id_MCDC_127;
[L210]              Od_IndexTable* Id_MCDC_128;
[L211]              Od_IndexTable* Id_MCDC_129;
[L212]              UINT32 Id_MCDC_130 [4];
[L213]              CanOpenNode Id_MCDC_131;
[L214]              UINT32 Id_MCDC_132=0;
[L452]              void * Id_MCDC_161;
[L453]              void * Id_MCDC_162;
[L454]              void * Id_MCDC_163;
[L455]              void * Id_MCDC_164;
[L456]              void * Id_MCDC_165;
[L457]              void * Id_MCDC_166;
[L458]              int  Id_MCDC_167;
[L459]              int  Id_MCDC_168;
[L460]              int  Id_MCDC_169;
[L461]              int  Id_MCDC_170;
[L462]              int  Id_MCDC_171;
[L463]              int  Id_MCDC_172;
[L464]              int  Id_MCDC_173;
[L465]              short  Id_MCDC_174;
[L466]              short  Id_MCDC_175;
[L467]              FILE* Id_MCDC_176;
[L468]              unsigned short  Id_MCDC_177;
[L469]              unsigned short  Id_MCDC_178;
[L470]              unsigned short  Id_MCDC_179=0;
[L471]              unsigned short  Id_MCDC_180=0;
[L472]              char  Id_MCDC_181;
[L473]              char  Id_MCDC_182;
[L474]              POS_CTRL_MODE Id_MCDC_183;
[L475]              Id_MCDC_176 = fopen("in.eds", "r")
[L476]  COND FALSE  !(Id_MCDC_176 == (( void * ) 0))
[L481]  CALL        Id_MCDC_118()
[L445]              int  Id_MCDC_159;
[L446]              void * Id_MCDC_160;
[L447]  CALL        Id_MCDC_117()
[L425]              CHAR Id_MCDC_157 [4]={0, 0, 0, 0};
[L426]              UINT32 Id_MCDC_158=0;
[L427]              Id_MCDC_131.Id_MCDC_66 = ( PDO_Buffer* ) malloc(372)
[L428]  CALL        Id_MCDC_115()
[L356]              UINT32 Id_MCDC_141;
[L357]              UINT32 Id_MCDC_142;
[L358]              UINT32 Id_MCDC_143;
[L359]              UINT32 Id_MCDC_144;
[L360]              UINT32 Id_MCDC_145;
[L361]              UINT32 Id_MCDC_146=0x00;
[L362]              UINT16 Id_MCDC_147;
[L363]              UINT32 Id_MCDC_148=0x00;
[L364]              UINT32 Id_MCDC_149=0x00;
[L365]              UINT8 Id_MCDC_35=0;
[L366]              UINT8 Id_MCDC_150=0;
[L367]              UINT8 Id_MCDC_36=0;
[L368]              UINT8 Id_MCDC_151=0;
[L369]              UINT8 Id_MCDC_152=0x00;
[L370]              INT32 Id_MCDC_153;
[L371]              void * Id_MCDC_154;
[L372]              UINT32* Id_MCDC_155;
[L373]              UINT16 Id_MCDC_156;
[L374]              Id_MCDC_141 = 0x1800
[L375]              Id_MCDC_150 = 0
[L375]  COND TRUE   Id_MCDC_150 < 4
[L377]              Id_MCDC_130[Id_MCDC_150] = 0x1A00 + Id_MCDC_150
[L375]              Id_MCDC_150++
[L375]  COND TRUE   Id_MCDC_150 < 4
[L377]              Id_MCDC_130[Id_MCDC_150] = 0x1A00 + Id_MCDC_150
[L375]              Id_MCDC_150++
[L375]  COND TRUE   Id_MCDC_150 < 4
[L377]              Id_MCDC_130[Id_MCDC_150] = 0x1A00 + Id_MCDC_150
[L375]              Id_MCDC_150++
[L375]  COND TRUE   Id_MCDC_150 < 4
[L377]              Id_MCDC_130[Id_MCDC_150] = 0x1A00 + Id_MCDC_150
[L375]              Id_MCDC_150++
[L375]  COND FALSE  !(Id_MCDC_150 < 4)
[L379]  COND FALSE  !(Id_MCDC_141 <= 0x1803)
[L421]              return 0x00;
[L361]              UINT32 Id_MCDC_146=0x00;
[L421]              return 0x00;
[L363]              UINT32 Id_MCDC_148=0x00;
[L421]              return 0x00;
[L364]              UINT32 Id_MCDC_149=0x00;
[L421]              return 0x00;
[L421]              return 0x00;
[L421]              return 0x00;
[L428]  RET         Id_MCDC_115()
[L429]              Id_MCDC_158 = 0
[L429]  COND FALSE  !(Id_MCDC_158 < 4)
[L440]  CALL        Id_MCDC_113(4, Id_MCDC_157)
[L305]              UINT32 Id_MCDC_139=0;
[L306]              UINT32 Id_MCDC_140=0;
[L307]  COND FALSE  !(Id_MCDC_111 < 2)
[L311]  COND FALSE  !(Id_MCDC_111 != 2)
[L317]  EXPR        Id_MCDC_112[1]
[L317]              Id_MCDC_140 = Id_MCDC_112[1]
[L319]  EXPR        Id_MCDC_112[0]
[L319]  CALL        Id_MCDC_110(Id_MCDC_112[0], Id_MCDC_140)
[L274]              UINT32 Id_MCDC_135=0;
[L275]              UINT32 Id_MCDC_136=0;
[L276]              UINT32 Id_MCDC_137=1;
[L277]              UINT32 Id_MCDC_138=0;
[L278]  COND TRUE   Id_MCDC_108 > Id_MCDC_109
[L280]              Id_MCDC_135 = Id_MCDC_108
[L281]              Id_MCDC_136 = Id_MCDC_109
[L293]  COND TRUE   Id_MCDC_137 != 0
[L295]  CALL        avoid_zero(Id_MCDC_136 != 0)
[L9]    COND FALSE  !(!y)
[L295]  RET         avoid_zero(Id_MCDC_136 != 0)
[L296]  CALL        __VERIFIER_assert(( long long  ) (Id_MCDC_135 / Id_MCDC_136) >= 0 && ( long long  ) (Id_MCDC_135 / Id_MCDC_136) <= 4294967295)
[L485]  COND TRUE   ! (Id_MCDC_121)
[L487]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 13 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 11.3s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 701 SDtfs, 984 SDslu, 855 SDs, 0 SdLazy, 1932 SolverSat, 218 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred 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, 1.6s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 30356 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...