/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/Problem10_label07.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 18:24:11,535 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 18:24:11,540 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 18:24:11,572 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 18:24:11,572 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 18:24:11,574 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 18:24:11,575 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 18:24:11,577 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 18:24:11,579 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 18:24:11,580 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 18:24:11,582 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 18:24:11,583 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 18:24:11,584 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 18:24:11,585 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 18:24:11,586 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 18:24:11,587 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 18:24:11,588 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 18:24:11,590 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 18:24:11,592 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 18:24:11,594 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 18:24:11,595 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 18:24:11,596 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 18:24:11,597 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 18:24:11,600 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 18:24:11,600 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 18:24:11,600 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 18:24:11,601 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 18:24:11,602 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 18:24:11,603 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 18:24:11,603 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 18:24:11,604 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 18:24:11,605 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 18:24:11,606 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 18:24:11,607 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 18:24:11,607 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 18:24:11,608 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 18:24:11,609 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 18:24:11,609 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 18:24:11,610 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 18:24:11,611 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 18:24:11,612 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 18:24:11,647 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 18:24:11,648 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 18:24:11,651 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 18:24:11,652 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 18:24:11,653 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 18:24:11,653 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 18:24:11,653 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 18:24:11,653 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 18:24:11,653 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 18:24:11,654 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 18:24:11,654 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 18:24:11,654 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 18:24:11,654 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 18:24:11,654 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 18:24:11,654 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 18:24:11,656 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 18:24:11,656 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 18:24:11,656 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 18:24:11,656 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 18:24:11,656 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 18:24:11,657 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 18:24:11,657 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 18:24:11,657 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 18:24:11,657 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 18:24:11,658 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 18:24:11,658 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 18:24:11,658 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 18:24:11,658 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 18:24:11,658 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 18:24:11,658 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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;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;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-09-24 18:24:12,140 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 18:24:12,159 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 18:24:12,164 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 18:24:12,166 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 18:24:12,166 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 18:24:12,167 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c
[2020-09-24 18:24:12,256 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74deabf9e/4a1f012fa0f74dc29a3698e01fcea4d3/FLAG8ba82e5ba
[2020-09-24 18:24:12,939 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 18:24:12,940 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c
[2020-09-24 18:24:12,954 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74deabf9e/4a1f012fa0f74dc29a3698e01fcea4d3/FLAG8ba82e5ba
[2020-09-24 18:24:13,149 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74deabf9e/4a1f012fa0f74dc29a3698e01fcea4d3
[2020-09-24 18:24:13,164 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 18:24:13,171 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 18:24:13,172 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 18:24:13,172 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 18:24:13,177 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 18:24:13,178 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:13" (1/1) ...
[2020-09-24 18:24:13,182 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fe5b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:13, skipping insertion in model container
[2020-09-24 18:24:13,183 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:13" (1/1) ...
[2020-09-24 18:24:13,192 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 18:24:13,243 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 18:24:13,777 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:24:13,784 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 18:24:14,005 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:24:14,023 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 18:24:14,024 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:14 WrapperNode
[2020-09-24 18:24:14,024 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 18:24:14,025 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 18:24:14,025 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 18:24:14,025 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 18:24:14,039 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:14" (1/1) ...
[2020-09-24 18:24:14,040 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:14" (1/1) ...
[2020-09-24 18:24:14,066 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:14" (1/1) ...
[2020-09-24 18:24:14,066 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:14" (1/1) ...
[2020-09-24 18:24:14,104 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:14" (1/1) ...
[2020-09-24 18:24:14,127 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:14" (1/1) ...
[2020-09-24 18:24:14,142 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:14" (1/1) ...
[2020-09-24 18:24:14,153 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 18:24:14,153 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 18:24:14,153 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 18:24:14,154 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 18:24:14,160 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:14" (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 18:24:14,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 18:24:14,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 18:24:14,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 18:24:14,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 18:24:14,262 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 18:24:14,262 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 18:24:14,262 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 18:24:14,262 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 18:24:14,264 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 18:24:14,264 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 18:24:14,264 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 18:24:15,783 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 18:24:15,783 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 18:24:15,792 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:15 BoogieIcfgContainer
[2020-09-24 18:24:15,792 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 18:24:15,793 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 18:24:15,793 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 18:24:15,797 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 18:24:15,798 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:13" (1/3) ...
[2020-09-24 18:24:15,799 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56783f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:15, skipping insertion in model container
[2020-09-24 18:24:15,799 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:14" (2/3) ...
[2020-09-24 18:24:15,800 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56783f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:15, skipping insertion in model container
[2020-09-24 18:24:15,800 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:15" (3/3) ...
[2020-09-24 18:24:15,802 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem10_label07.c
[2020-09-24 18:24:15,815 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 18:24:15,826 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 18:24:15,853 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 18:24:15,888 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 18:24:15,888 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 18:24:15,888 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 18:24:15,888 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 18:24:15,889 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 18:24:15,889 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 18:24:15,889 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 18:24:15,889 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 18:24:15,922 INFO  L276                IsEmpty]: Start isEmpty. Operand 456 states.
[2020-09-24 18:24:15,934 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2020-09-24 18:24:15,934 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:15,935 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]
[2020-09-24 18:24:15,936 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:15,944 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:15,944 INFO  L82        PathProgramCache]: Analyzing trace with hash -843476993, now seen corresponding path program 1 times
[2020-09-24 18:24:15,956 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:15,956 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997235313]
[2020-09-24 18:24:15,957 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:16,134 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:16,199 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:16,588 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:16,641 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:17,204 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:17,205 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-09-24 18:24:17,205 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 18:24:17,205 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1064
[2020-09-24 18:24:17,209 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:17,209 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:24:17,210 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 18:24:17,210 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 61
[2020-09-24 18:24:17,210 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 18:24:17,367 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:17,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:17,380 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:17,404 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:17,404 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:17,404 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:17,405 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-09-24 18:24:17,405 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:17,405 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:17,405 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:17,406 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 18:24:17,406 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:17,434 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 18:24:17,436 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997235313]
[2020-09-24 18:24:17,439 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:24:17,439 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 18:24:17,440 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71043760]
[2020-09-24 18:24:17,448 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 18:24:17,449 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:17,467 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 18:24:17,469 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 18:24:17,472 INFO  L87              Difference]: Start difference. First operand 456 states. Second operand 4 states.
[2020-09-24 18:24:19,638 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:19,639 INFO  L93              Difference]: Finished difference Result 1163 states and 1589 transitions.
[2020-09-24 18:24:19,640 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 18:24:19,642 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 64
[2020-09-24 18:24:19,643 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:19,671 INFO  L225             Difference]: With dead ends: 1163
[2020-09-24 18:24:19,672 INFO  L226             Difference]: Without dead ends: 634
[2020-09-24 18:24:19,686 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:24:19,709 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 634 states.
[2020-09-24 18:24:19,783 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580.
[2020-09-24 18:24:19,784 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 580 states.
[2020-09-24 18:24:19,790 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions.
[2020-09-24 18:24:19,792 INFO  L78                 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 64
[2020-09-24 18:24:19,793 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:19,793 INFO  L479      AbstractCegarLoop]: Abstraction has 580 states and 732 transitions.
[2020-09-24 18:24:19,793 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 18:24:19,794 INFO  L276                IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions.
[2020-09-24 18:24:19,802 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2020-09-24 18:24:19,803 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:19,803 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-09-24 18:24:19,804 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 18:24:19,804 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:19,804 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:19,804 INFO  L82        PathProgramCache]: Analyzing trace with hash 1704622095, now seen corresponding path program 1 times
[2020-09-24 18:24:19,805 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:19,805 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007829854]
[2020-09-24 18:24:19,805 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:19,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:19,900 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:19,994 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:20,492 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:20,564 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:23,506 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:23,506 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 154
[2020-09-24 18:24:23,506 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 18:24:23,506 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3645
[2020-09-24 18:24:23,507 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:23,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:23,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 94
[2020-09-24 18:24:23,508 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 59
[2020-09-24 18:24:23,508 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:23,583 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:23,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:23,590 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:23,597 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:23,598 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:23,598 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:23,599 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:24:23,603 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:23,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:23,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:23,604 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:23,604 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:23,627 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:23,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:23,656 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:23,728 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:23,729 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-09-24 18:24:23,729 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:23,729 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 84
[2020-09-24 18:24:23,729 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:23,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:23,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:23,730 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 65
[2020-09-24 18:24:23,731 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:23,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:24:23,822 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007829854]
[2020-09-24 18:24:23,822 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:23,823 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 18:24:23,823 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104436258]
[2020-09-24 18:24:23,825 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:24:23,826 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:23,826 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:24:23,826 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:24:23,826 INFO  L87              Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states.
[2020-09-24 18:24:25,704 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:25,705 INFO  L93              Difference]: Finished difference Result 1461 states and 1941 transitions.
[2020-09-24 18:24:25,705 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 18:24:25,706 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 143
[2020-09-24 18:24:25,707 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:25,712 INFO  L225             Difference]: With dead ends: 1461
[2020-09-24 18:24:25,713 INFO  L226             Difference]: Without dead ends: 896
[2020-09-24 18:24:25,715 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-09-24 18:24:25,717 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 896 states.
[2020-09-24 18:24:25,757 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 884.
[2020-09-24 18:24:25,757 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 884 states.
[2020-09-24 18:24:25,762 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1146 transitions.
[2020-09-24 18:24:25,762 INFO  L78                 Accepts]: Start accepts. Automaton has 884 states and 1146 transitions. Word has length 143
[2020-09-24 18:24:25,765 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:25,766 INFO  L479      AbstractCegarLoop]: Abstraction has 884 states and 1146 transitions.
[2020-09-24 18:24:25,766 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:24:25,766 INFO  L276                IsEmpty]: Start isEmpty. Operand 884 states and 1146 transitions.
[2020-09-24 18:24:25,777 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2020-09-24 18:24:25,777 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:25,777 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-09-24 18:24:25,778 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 18:24:25,779 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:25,780 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:25,780 INFO  L82        PathProgramCache]: Analyzing trace with hash 1280909557, now seen corresponding path program 1 times
[2020-09-24 18:24:25,780 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:25,781 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004964675]
[2020-09-24 18:24:25,783 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:25,823 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:25,858 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:26,191 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:26,263 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:27,611 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:27,612 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 166
[2020-09-24 18:24:27,612 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 18:24:27,612 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1784
[2020-09-24 18:24:27,613 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:27,613 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:27,613 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 107
[2020-09-24 18:24:27,613 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 58
[2020-09-24 18:24:27,614 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:27,712 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:27,714 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:27,716 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:27,724 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:27,724 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:27,724 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:27,725 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:24:27,725 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:27,725 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:27,725 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:27,725 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:27,726 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:27,741 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:27,757 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:27,773 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:27,853 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:27,853 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 87
[2020-09-24 18:24:27,854 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:27,854 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 95
[2020-09-24 18:24:27,854 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:27,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:27,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:27,855 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 78
[2020-09-24 18:24:27,855 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:27,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:24:27,924 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004964675]
[2020-09-24 18:24:27,924 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:27,924 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-09-24 18:24:27,925 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89487719]
[2020-09-24 18:24:27,926 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 18:24:27,927 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:27,927 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 18:24:27,928 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 18:24:27,928 INFO  L87              Difference]: Start difference. First operand 884 states and 1146 transitions. Second operand 6 states.
[2020-09-24 18:24:30,116 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:30,116 INFO  L93              Difference]: Finished difference Result 3013 states and 4181 transitions.
[2020-09-24 18:24:30,121 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-09-24 18:24:30,121 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 155
[2020-09-24 18:24:30,122 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:30,139 INFO  L225             Difference]: With dead ends: 3013
[2020-09-24 18:24:30,140 INFO  L226             Difference]: Without dead ends: 2144
[2020-09-24 18:24:30,144 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2020-09-24 18:24:30,147 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2144 states.
[2020-09-24 18:24:30,228 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2102.
[2020-09-24 18:24:30,228 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2102 states.
[2020-09-24 18:24:30,244 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2759 transitions.
[2020-09-24 18:24:30,244 INFO  L78                 Accepts]: Start accepts. Automaton has 2102 states and 2759 transitions. Word has length 155
[2020-09-24 18:24:30,247 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:30,247 INFO  L479      AbstractCegarLoop]: Abstraction has 2102 states and 2759 transitions.
[2020-09-24 18:24:30,248 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 18:24:30,248 INFO  L276                IsEmpty]: Start isEmpty. Operand 2102 states and 2759 transitions.
[2020-09-24 18:24:30,258 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 237
[2020-09-24 18:24:30,258 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:30,259 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-09-24 18:24:30,259 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 18:24:30,260 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:30,260 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:30,260 INFO  L82        PathProgramCache]: Analyzing trace with hash 522738282, now seen corresponding path program 1 times
[2020-09-24 18:24:30,261 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:30,263 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863943031]
[2020-09-24 18:24:30,267 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:30,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:30,392 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:30,502 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:30,616 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:31,131 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:31,347 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:31,916 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:33,040 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:34,161 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:34,416 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:35,041 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:35,127 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:35,282 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:35,413 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:35,414 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 249
[2020-09-24 18:24:35,414 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 12
[2020-09-24 18:24:35,414 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5071
[2020-09-24 18:24:35,414 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:35,414 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:35,415 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 106
[2020-09-24 18:24:35,415 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 83
[2020-09-24 18:24:35,415 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:35,487 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:35,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:35,491 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:35,499 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:35,499 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:35,499 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:35,500 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:24:35,500 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:35,500 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:35,500 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:35,500 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:35,500 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:35,513 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:35,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:35,543 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:35,609 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:35,609 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 18:24:35,610 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:35,610 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 79
[2020-09-24 18:24:35,610 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:35,611 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:35,611 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:35,611 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-09-24 18:24:35,612 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:35,654 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2020-09-24 18:24:35,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:35,691 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:35,835 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:35,835 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 79
[2020-09-24 18:24:35,836 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:35,836 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 160
[2020-09-24 18:24:35,836 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:35,837 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:35,837 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:24:35,837 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 78
[2020-09-24 18:24:35,838 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:35,995 INFO  L134       CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 18:24:35,996 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863943031]
[2020-09-24 18:24:35,996 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:35,996 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 18:24:35,997 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591432025]
[2020-09-24 18:24:35,998 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 18:24:35,998 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:35,998 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 18:24:35,999 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-24 18:24:35,999 INFO  L87              Difference]: Start difference. First operand 2102 states and 2759 transitions. Second operand 8 states.
[2020-09-24 18:24:38,938 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:38,939 INFO  L93              Difference]: Finished difference Result 4735 states and 6345 transitions.
[2020-09-24 18:24:38,939 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-09-24 18:24:38,939 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 236
[2020-09-24 18:24:38,940 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:38,953 INFO  L225             Difference]: With dead ends: 4735
[2020-09-24 18:24:38,953 INFO  L226             Difference]: Without dead ends: 1830
[2020-09-24 18:24:38,964 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210
[2020-09-24 18:24:38,967 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1830 states.
[2020-09-24 18:24:39,019 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1756.
[2020-09-24 18:24:39,020 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1756 states.
[2020-09-24 18:24:39,027 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2135 transitions.
[2020-09-24 18:24:39,028 INFO  L78                 Accepts]: Start accepts. Automaton has 1756 states and 2135 transitions. Word has length 236
[2020-09-24 18:24:39,028 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:39,028 INFO  L479      AbstractCegarLoop]: Abstraction has 1756 states and 2135 transitions.
[2020-09-24 18:24:39,028 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 18:24:39,028 INFO  L276                IsEmpty]: Start isEmpty. Operand 1756 states and 2135 transitions.
[2020-09-24 18:24:39,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 290
[2020-09-24 18:24:39,036 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:39,037 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-09-24 18:24:39,037 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 18:24:39,037 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:39,037 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:39,038 INFO  L82        PathProgramCache]: Analyzing trace with hash 1039864954, now seen corresponding path program 1 times
[2020-09-24 18:24:39,038 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:39,038 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285987354]
[2020-09-24 18:24:39,038 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:39,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:39,145 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:39,430 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:39,593 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:40,600 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:41,966 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:42,079 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:42,496 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:44,136 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:44,137 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 302
[2020-09-24 18:24:44,137 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 7
[2020-09-24 18:24:44,137 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5039
[2020-09-24 18:24:44,137 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:44,137 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:44,138 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 96
[2020-09-24 18:24:44,138 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 146
[2020-09-24 18:24:44,138 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:44,215 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:44,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:44,220 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:44,227 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:44,228 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:44,228 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:44,228 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 18:24:44,228 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:44,228 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:44,229 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:44,229 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:44,229 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:44,242 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:44,254 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:44,266 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:44,333 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:44,333 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-09-24 18:24:44,333 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:44,334 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 78
[2020-09-24 18:24:44,334 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:44,334 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:44,335 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:44,335 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-09-24 18:24:44,335 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:44,374 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2020-09-24 18:24:44,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:44,445 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:44,674 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:44,675 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 142
[2020-09-24 18:24:44,675 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:44,675 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 262
[2020-09-24 18:24:44,678 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:44,679 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:44,679 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:24:44,679 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 141
[2020-09-24 18:24:44,679 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:45,039 INFO  L134       CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 18:24:45,039 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285987354]
[2020-09-24 18:24:45,040 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:45,041 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 18:24:45,041 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005428607]
[2020-09-24 18:24:45,042 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 18:24:45,043 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:45,043 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 18:24:45,043 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-24 18:24:45,044 INFO  L87              Difference]: Start difference. First operand 1756 states and 2135 transitions. Second operand 8 states.
[2020-09-24 18:24:47,859 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:47,860 INFO  L93              Difference]: Finished difference Result 3871 states and 4795 transitions.
[2020-09-24 18:24:47,860 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-09-24 18:24:47,860 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 289
[2020-09-24 18:24:47,861 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:47,874 INFO  L225             Difference]: With dead ends: 3871
[2020-09-24 18:24:47,875 INFO  L226             Difference]: Without dead ends: 2130
[2020-09-24 18:24:47,881 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-09-24 18:24:47,885 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2130 states.
[2020-09-24 18:24:47,947 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 2084.
[2020-09-24 18:24:47,948 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2084 states.
[2020-09-24 18:24:47,957 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2503 transitions.
[2020-09-24 18:24:47,957 INFO  L78                 Accepts]: Start accepts. Automaton has 2084 states and 2503 transitions. Word has length 289
[2020-09-24 18:24:47,958 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:47,958 INFO  L479      AbstractCegarLoop]: Abstraction has 2084 states and 2503 transitions.
[2020-09-24 18:24:47,958 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 18:24:47,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 2084 states and 2503 transitions.
[2020-09-24 18:24:47,965 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 296
[2020-09-24 18:24:47,966 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:47,966 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-09-24 18:24:47,966 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 18:24:47,967 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:47,967 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:47,967 INFO  L82        PathProgramCache]: Analyzing trace with hash -1530315794, now seen corresponding path program 1 times
[2020-09-24 18:24:47,967 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:47,968 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566171982]
[2020-09-24 18:24:47,968 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:48,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:48,079 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:48,178 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:48,740 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:48,974 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:50,611 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:53,036 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:53,036 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 308
[2020-09-24 18:24:53,037 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 18:24:53,037 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5005
[2020-09-24 18:24:53,037 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:53,037 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:53,037 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 96
[2020-09-24 18:24:53,037 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 152
[2020-09-24 18:24:53,037 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:53,124 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:53,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:53,128 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:53,136 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:53,137 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:53,137 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:53,137 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 18:24:53,137 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:53,138 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:53,138 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:53,138 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:53,138 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:53,160 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:53,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:53,182 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:53,244 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:53,245 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-09-24 18:24:53,245 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:53,245 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 73
[2020-09-24 18:24:53,246 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:53,246 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:53,246 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:53,247 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-09-24 18:24:53,247 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:53,289 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2020-09-24 18:24:53,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:53,356 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:53,602 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:53,602 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 148
[2020-09-24 18:24:53,603 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:53,603 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 278
[2020-09-24 18:24:53,603 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:53,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:53,603 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:24:53,604 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 147
[2020-09-24 18:24:53,604 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:53,883 INFO  L134       CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 18:24:53,884 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566171982]
[2020-09-24 18:24:53,884 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:53,884 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 18:24:53,884 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382145223]
[2020-09-24 18:24:53,885 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 18:24:53,886 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:53,886 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 18:24:53,886 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-24 18:24:53,887 INFO  L87              Difference]: Start difference. First operand 2084 states and 2503 transitions. Second operand 8 states.
[2020-09-24 18:24:56,460 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:56,460 INFO  L93              Difference]: Finished difference Result 4509 states and 5450 transitions.
[2020-09-24 18:24:56,461 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-09-24 18:24:56,461 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 295
[2020-09-24 18:24:56,462 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:56,474 INFO  L225             Difference]: With dead ends: 4509
[2020-09-24 18:24:56,475 INFO  L226             Difference]: Without dead ends: 2440
[2020-09-24 18:24:56,481 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-09-24 18:24:56,485 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2440 states.
[2020-09-24 18:24:56,538 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2396.
[2020-09-24 18:24:56,538 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2396 states.
[2020-09-24 18:24:56,543 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 2744 transitions.
[2020-09-24 18:24:56,543 INFO  L78                 Accepts]: Start accepts. Automaton has 2396 states and 2744 transitions. Word has length 295
[2020-09-24 18:24:56,544 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:56,544 INFO  L479      AbstractCegarLoop]: Abstraction has 2396 states and 2744 transitions.
[2020-09-24 18:24:56,544 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 18:24:56,544 INFO  L276                IsEmpty]: Start isEmpty. Operand 2396 states and 2744 transitions.
[2020-09-24 18:24:56,552 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 313
[2020-09-24 18:24:56,553 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:56,553 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2020-09-24 18:24:56,553 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 18:24:56,554 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:56,554 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:56,554 INFO  L82        PathProgramCache]: Analyzing trace with hash -562456677, now seen corresponding path program 1 times
[2020-09-24 18:24:56,554 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:56,555 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933069301]
[2020-09-24 18:24:56,555 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:56,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:56,621 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:56,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:56,981 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:57,585 FATAL L256   erpolLogProxyWrapper]: Now shrinking...