/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 17:12:34,097 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 17:12:34,101 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 17:12:34,147 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 17:12:34,149 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 17:12:34,160 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 17:12:34,162 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 17:12:34,166 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 17:12:34,168 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 17:12:34,172 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 17:12:34,173 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 17:12:34,175 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 17:12:34,176 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 17:12:34,179 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 17:12:34,181 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 17:12:34,183 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 17:12:34,185 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 17:12:34,186 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 17:12:34,188 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 17:12:34,196 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 17:12:34,198 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 17:12:34,200 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 17:12:34,202 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 17:12:34,203 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 17:12:34,206 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 17:12:34,206 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 17:12:34,206 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 17:12:34,209 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 17:12:34,209 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 17:12:34,211 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 17:12:34,211 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 17:12:34,212 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 17:12:34,213 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 17:12:34,214 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 17:12:34,215 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 17:12:34,215 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 17:12:34,216 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 17:12:34,216 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 17:12:34,217 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 17:12:34,218 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 17:12:34,219 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 17:12:34,220 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
[2020-09-24 17:12:34,266 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 17:12:34,267 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 17:12:34,269 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 17:12:34,269 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 17:12:34,269 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 17:12:34,270 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 17:12:34,270 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 17:12:34,270 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 17:12:34,270 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 17:12:34,270 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 17:12:34,271 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 17:12:34,271 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 17:12:34,271 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 17:12:34,271 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 17:12:34,271 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 17:12:34,272 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 17:12:34,272 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 17:12:34,272 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 17:12:34,272 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 17:12:34,272 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 17:12:34,273 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 17:12:34,273 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 17:12:34,273 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 17:12:34,273 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 17:12:34,274 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 17:12:34,274 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 17:12:34,274 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 17:12:34,274 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 17:12:34,274 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 17:12:34,274 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.rcfgbuilder: Size of a code block -> SingleStatement
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;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;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;log-additional-information=true;
[2020-09-24 17:12:34,696 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 17:12:34,722 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 17:12:34,728 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 17:12:34,730 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 17:12:34,730 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 17:12:34,732 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c
[2020-09-24 17:12:34,819 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85775c428/2445845446344355a1b22a62bf8d6e49/FLAG6676a33ca
[2020-09-24 17:12:35,461 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 17:12:35,462 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label25.c
[2020-09-24 17:12:35,478 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85775c428/2445845446344355a1b22a62bf8d6e49/FLAG6676a33ca
[2020-09-24 17:12:35,686 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85775c428/2445845446344355a1b22a62bf8d6e49
[2020-09-24 17:12:35,701 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 17:12:35,710 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 17:12:35,713 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 17:12:35,713 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 17:12:35,718 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 17:12:35,719 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:12:35" (1/1) ...
[2020-09-24 17:12:35,723 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab12f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:35, skipping insertion in model container
[2020-09-24 17:12:35,724 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:12:35" (1/1) ...
[2020-09-24 17:12:35,733 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 17:12:35,803 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 17:12:36,233 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:12:36,240 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 17:12:36,539 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:12:36,571 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 17:12:36,572 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36 WrapperNode
[2020-09-24 17:12:36,572 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 17:12:36,573 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 17:12:36,573 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 17:12:36,573 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 17:12:36,591 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ...
[2020-09-24 17:12:36,591 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ...
[2020-09-24 17:12:36,612 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ...
[2020-09-24 17:12:36,612 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ...
[2020-09-24 17:12:36,652 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ...
[2020-09-24 17:12:36,675 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ...
[2020-09-24 17:12:36,684 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ...
[2020-09-24 17:12:36,692 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 17:12:36,692 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 17:12:36,692 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 17:12:36,693 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 17:12:36,694 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (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
[2020-09-24 17:12:36,808 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 17:12:36,809 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 17:12:36,810 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 17:12:36,810 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 17:12:36,811 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 17:12:36,811 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 17:12:36,811 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 17:12:36,811 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 17:12:36,812 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 17:12:36,813 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 17:12:36,813 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 17:12:38,421 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 17:12:38,421 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 17:12:38,430 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:12:38 BoogieIcfgContainer
[2020-09-24 17:12:38,430 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 17:12:38,431 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 17:12:38,432 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 17:12:38,435 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 17:12:38,436 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:12:35" (1/3) ...
[2020-09-24 17:12:38,437 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fd38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:12:38, skipping insertion in model container
[2020-09-24 17:12:38,437 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (2/3) ...
[2020-09-24 17:12:38,437 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fd38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:12:38, skipping insertion in model container
[2020-09-24 17:12:38,438 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:12:38" (3/3) ...
[2020-09-24 17:12:38,440 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem02_label25.c
[2020-09-24 17:12:38,451 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 17:12:38,463 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 17:12:38,487 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 17:12:38,521 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 17:12:38,521 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 17:12:38,521 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 17:12:38,521 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 17:12:38,521 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 17:12:38,522 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 17:12:38,522 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 17:12:38,522 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 17:12:38,553 INFO  L276                IsEmpty]: Start isEmpty. Operand 527 states.
[2020-09-24 17:12:38,575 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2020-09-24 17:12:38,575 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:12:38,577 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:12:38,577 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:12:38,585 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:12:38,585 INFO  L82        PathProgramCache]: Analyzing trace with hash 1730766665, now seen corresponding path program 1 times
[2020-09-24 17:12:38,597 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:12:38,597 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299682537]
[2020-09-24 17:12:38,598 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:12:38,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:12:38,985 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:39,436 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:39,519 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:39,830 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:39,982 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:42,377 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:42,654 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:43,648 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:43,889 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:45,202 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:47,742 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:50,443 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:12:50,443 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 169
[2020-09-24 17:12:50,444 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 11
[2020-09-24 17:12:50,444 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11553
[2020-09-24 17:12:50,445 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:12:50,446 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 17:12:50,446 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-24 17:12:50,446 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 151
[2020-09-24 17:12:50,446 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 17:12:50,658 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:12:50,667 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:12:50,671 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:50,693 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:12:50,693 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 17:12:50,694 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:12:50,694 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-09-24 17:12:50,694 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:12:50,694 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 17:12:50,694 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:12:50,695 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-09-24 17:12:50,695 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:12:50,783 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:12:50,784 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299682537]
[2020-09-24 17:12:50,786 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:12:50,787 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 17:12:50,788 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400224702]
[2020-09-24 17:12:50,794 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 17:12:50,795 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:12:50,812 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 17:12:50,813 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 17:12:50,816 INFO  L87              Difference]: Start difference. First operand 527 states. Second operand 4 states.
[2020-09-24 17:12:52,982 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:12:52,986 INFO  L93              Difference]: Finished difference Result 1396 states and 1850 transitions.
[2020-09-24 17:12:52,986 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 17:12:52,988 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 160
[2020-09-24 17:12:52,989 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:12:53,026 INFO  L225             Difference]: With dead ends: 1396
[2020-09-24 17:12:53,026 INFO  L226             Difference]: Without dead ends: 788
[2020-09-24 17:12:53,036 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 17:12:53,057 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 788 states.
[2020-09-24 17:12:53,149 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665.
[2020-09-24 17:12:53,151 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 665 states.
[2020-09-24 17:12:53,155 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions.
[2020-09-24 17:12:53,157 INFO  L78                 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 160
[2020-09-24 17:12:53,158 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:12:53,158 INFO  L479      AbstractCegarLoop]: Abstraction has 665 states and 813 transitions.
[2020-09-24 17:12:53,158 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 17:12:53,159 INFO  L276                IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions.
[2020-09-24 17:12:53,165 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 179
[2020-09-24 17:12:53,165 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 17:12:53,166 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:12:53,166 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 17:12:53,166 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:12:53,167 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:12:53,167 INFO  L82        PathProgramCache]: Analyzing trace with hash -859680355, now seen corresponding path program 1 times
[2020-09-24 17:12:53,167 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:12:53,168 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231615683]
[2020-09-24 17:12:53,168 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:12:53,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:12:53,272 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:53,401 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:53,493 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:53,571 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:53,919 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:55,778 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:12:58,117 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:13:00,951 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:13:01,122 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:13:01,670 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:13:10,544 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:13:10,637 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:13:10,971 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:13:26,602 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:13:26,603 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 189
[2020-09-24 17:13:26,603 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 13
[2020-09-24 17:13:26,603 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 33377
[2020-09-24 17:13:26,603 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:13:26,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-09-24 17:13:26,604 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-24 17:13:26,604 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 122
[2020-09-24 17:13:26,604 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:13:26,784 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:13:26,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:13:26,800 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:13:26,827 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:13:26,827 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 17:13:26,836 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:13:26,836 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-09-24 17:13:26,836 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:13:26,837 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 17:13:26,837 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:13:26,838 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-24 17:13:26,838 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:13:26,889 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-09-24 17:13:26,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:13:26,898 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:13:26,922 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:13:26,931 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:13:26,931 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 14
[2020-09-24 17:13:26,931 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 17:13:26,931 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 36
[2020-09-24 17:13:26,931 FATAL L256   erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:13:26,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 17:13:26,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 17:13:26,932 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-09-24 17:13:26,932 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:13:27,107 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:13:27,108 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231615683]
[2020-09-24 17:13:27,108 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 17:13:27,108 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-09-24 17:13:27,109 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626209509]
[2020-09-24 17:13:27,111 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-09-24 17:13:27,111 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:13:27,111 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-09-24 17:13:27,112 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132
[2020-09-24 17:13:27,112 INFO  L87              Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 12 states.
[2020-09-24 17:13:27,943 WARN  L193               SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59
[2020-09-24 17:13:28,303 WARN  L193               SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58