/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_label02.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 18:23:52,042 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 18:23:52,046 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 18:23:52,084 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 18:23:52,085 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 18:23:52,092 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 18:23:52,093 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 18:23:52,096 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 18:23:52,099 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 18:23:52,101 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 18:23:52,102 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 18:23:52,105 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 18:23:52,105 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 18:23:52,109 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 18:23:52,112 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 18:23:52,113 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 18:23:52,115 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 18:23:52,117 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 18:23:52,118 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 18:23:52,124 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 18:23:52,127 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 18:23:52,128 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 18:23:52,129 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 18:23:52,130 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 18:23:52,142 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 18:23:52,142 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 18:23:52,143 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 18:23:52,148 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 18:23:52,148 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 18:23:52,149 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 18:23:52,149 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 18:23:52,150 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 18:23:52,151 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 18:23:52,152 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 18:23:52,156 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 18:23:52,156 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 18:23:52,157 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 18:23:52,157 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 18:23:52,158 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 18:23:52,158 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 18:23:52,162 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 18:23:52,163 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 18:23:52,191 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 18:23:52,192 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 18:23:52,193 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 18:23:52,193 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 18:23:52,193 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 18:23:52,194 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 18:23:52,194 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 18:23:52,194 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 18:23:52,194 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 18:23:52,194 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 18:23:52,195 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 18:23:52,195 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 18:23:52,195 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 18:23:52,195 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 18:23:52,195 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 18:23:52,195 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 18:23:52,196 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 18:23:52,196 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 18:23:52,196 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 18:23:52,196 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 18:23:52,196 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 18:23:52,197 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 18:23:52,197 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 18:23:52,197 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 18:23:52,197 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 18:23:52,197 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 18:23:52,198 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 18:23:52,198 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 18:23:52,198 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 18:23:52,198 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 18:23:52,641 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 18:23:52,659 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 18:23:52,663 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 18:23:52,665 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 18:23:52,665 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 18:23:52,666 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c
[2020-09-24 18:23:52,748 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eeba275c/0364dd19df2e4e66b47f16a34b5c6c58/FLAG3e1e013b1
[2020-09-24 18:23:53,343 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 18:23:53,344 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c
[2020-09-24 18:23:53,364 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eeba275c/0364dd19df2e4e66b47f16a34b5c6c58/FLAG3e1e013b1
[2020-09-24 18:23:53,559 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eeba275c/0364dd19df2e4e66b47f16a34b5c6c58
[2020-09-24 18:23:53,574 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 18:23:53,581 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 18:23:53,583 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 18:23:53,583 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 18:23:53,587 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 18:23:53,589 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:53" (1/1) ...
[2020-09-24 18:23:53,593 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:53, skipping insertion in model container
[2020-09-24 18:23:53,593 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:23:53" (1/1) ...
[2020-09-24 18:23:53,602 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 18:23:53,660 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 18:23:54,140 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:23:54,151 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 18:23:54,372 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:23:54,395 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 18:23:54,396 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54 WrapperNode
[2020-09-24 18:23:54,396 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 18:23:54,397 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 18:23:54,397 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 18:23:54,397 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 18:23:54,411 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ...
[2020-09-24 18:23:54,411 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ...
[2020-09-24 18:23:54,432 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ...
[2020-09-24 18:23:54,432 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ...
[2020-09-24 18:23:54,470 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ...
[2020-09-24 18:23:54,492 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ...
[2020-09-24 18:23:54,503 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (1/1) ...
[2020-09-24 18:23:54,518 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 18:23:54,520 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 18:23:54,520 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 18:23:54,520 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 18:23:54,521 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (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 18:23:54,625 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 18:23:54,625 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 18:23:54,626 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-09-24 18:23:54,626 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 18:23:54,627 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-09-24 18:23:54,627 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 18:23:54,627 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 18:23:54,627 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-09-24 18:23:54,628 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 18:23:54,628 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 18:23:54,628 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 18:23:56,020 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 18:23:56,020 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 18:23:56,029 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:56 BoogieIcfgContainer
[2020-09-24 18:23:56,029 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 18:23:56,031 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 18:23:56,031 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 18:23:56,034 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 18:23:56,035 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:23:53" (1/3) ...
[2020-09-24 18:23:56,036 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:56, skipping insertion in model container
[2020-09-24 18:23:56,036 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:23:54" (2/3) ...
[2020-09-24 18:23:56,037 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:23:56, skipping insertion in model container
[2020-09-24 18:23:56,037 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:23:56" (3/3) ...
[2020-09-24 18:23:56,039 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem10_label02.c
[2020-09-24 18:23:56,050 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 18:23:56,062 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 18:23:56,084 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 18:23:56,122 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 18:23:56,123 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 18:23:56,123 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 18:23:56,123 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 18:23:56,123 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 18:23:56,123 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 18:23:56,124 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 18:23:56,124 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 18:23:56,157 INFO  L276                IsEmpty]: Start isEmpty. Operand 456 states.
[2020-09-24 18:23:56,170 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2020-09-24 18:23:56,171 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:23:56,172 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]
[2020-09-24 18:23:56,173 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:23:56,182 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:23:56,182 INFO  L82        PathProgramCache]: Analyzing trace with hash 613515831, now seen corresponding path program 1 times
[2020-09-24 18:23:56,196 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:23:56,196 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791069953]
[2020-09-24 18:23:56,197 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:23:56,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:23:56,471 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:23:56,634 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:23:57,309 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:23:57,310 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 87
[2020-09-24 18:23:57,310 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 18:23:57,310 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 900
[2020-09-24 18:23:57,313 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:23:57,314 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:23:57,314 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-24 18:23:57,314 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 74
[2020-09-24 18:23:57,314 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 18:23:57,459 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:23:57,465 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:23:57,469 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:23:57,487 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:23:57,487 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:23:57,488 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:23:57,488 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-09-24 18:23:57,488 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:23:57,488 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:23:57,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:23:57,489 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 18:23:57,489 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:23:57,524 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 18:23:57,525 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791069953]
[2020-09-24 18:23:57,527 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:23:57,527 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 18:23:57,529 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577200616]
[2020-09-24 18:23:57,535 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:23:57,536 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:23:57,556 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:23:57,557 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:23:57,562 INFO  L87              Difference]: Start difference. First operand 456 states. Second operand 5 states.
[2020-09-24 18:24:00,153 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:00,154 INFO  L93              Difference]: Finished difference Result 1226 states and 1797 transitions.
[2020-09-24 18:24:00,155 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 18:24:00,156 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 78
[2020-09-24 18:24:00,157 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:00,198 INFO  L225             Difference]: With dead ends: 1226
[2020-09-24 18:24:00,198 INFO  L226             Difference]: Without dead ends: 707
[2020-09-24 18:24:00,212 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-09-24 18:24:00,233 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 707 states.
[2020-09-24 18:24:00,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695.
[2020-09-24 18:24:00,339 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 695 states.
[2020-09-24 18:24:00,344 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions.
[2020-09-24 18:24:00,346 INFO  L78                 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 78
[2020-09-24 18:24:00,347 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:00,347 INFO  L479      AbstractCegarLoop]: Abstraction has 695 states and 926 transitions.
[2020-09-24 18:24:00,347 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:24:00,347 INFO  L276                IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions.
[2020-09-24 18:24:00,365 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 208
[2020-09-24 18:24:00,366 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:00,366 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, 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]
[2020-09-24 18:24:00,367 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 18:24:00,367 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:00,368 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:00,368 INFO  L82        PathProgramCache]: Analyzing trace with hash -2109548784, now seen corresponding path program 1 times
[2020-09-24 18:24:00,372 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:00,372 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574353448]
[2020-09-24 18:24:00,373 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:00,474 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:00,533 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:00,653 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:00,956 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:02,228 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:02,710 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:03,011 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:05,497 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:05,497 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 218
[2020-09-24 18:24:05,498 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-24 18:24:05,498 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5019
[2020-09-24 18:24:05,498 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:05,499 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:05,500 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 145
[2020-09-24 18:24:05,500 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 72
[2020-09-24 18:24:05,500 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 18:24:05,640 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:05,642 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:05,647 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:05,655 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:05,656 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:05,657 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:05,660 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-24 18:24:05,661 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:05,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:05,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:05,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:05,662 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:05,677 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:05,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:05,772 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:05,852 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:05,853 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 125
[2020-09-24 18:24:05,853 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:05,854 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 108
[2020-09-24 18:24:05,854 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:05,855 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:05,864 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:05,864 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 116
[2020-09-24 18:24:05,864 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 9
[2020-09-24 18:24:05,959 INFO  L134       CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:24:05,959 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574353448]
[2020-09-24 18:24:05,960 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:05,960 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-09-24 18:24:05,960 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098364911]
[2020-09-24 18:24:05,964 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 18:24:05,965 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:05,965 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 18:24:05,965 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 18:24:05,965 INFO  L87              Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 5 states.
[2020-09-24 18:24:07,955 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:07,955 INFO  L93              Difference]: Finished difference Result 1863 states and 2605 transitions.
[2020-09-24 18:24:07,956 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 18:24:07,956 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 207
[2020-09-24 18:24:07,957 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:07,965 INFO  L225             Difference]: With dead ends: 1863
[2020-09-24 18:24:07,965 INFO  L226             Difference]: Without dead ends: 1183
[2020-09-24 18:24:07,969 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 18:24:07,970 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1183 states.
[2020-09-24 18:24:08,009 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 999.
[2020-09-24 18:24:08,010 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 999 states.
[2020-09-24 18:24:08,015 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1294 transitions.
[2020-09-24 18:24:08,015 INFO  L78                 Accepts]: Start accepts. Automaton has 999 states and 1294 transitions. Word has length 207
[2020-09-24 18:24:08,017 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:08,017 INFO  L479      AbstractCegarLoop]: Abstraction has 999 states and 1294 transitions.
[2020-09-24 18:24:08,017 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 18:24:08,017 INFO  L276                IsEmpty]: Start isEmpty. Operand 999 states and 1294 transitions.
[2020-09-24 18:24:08,023 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 215
[2020-09-24 18:24:08,023 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:08,024 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, 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 18:24:08,024 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 18:24:08,024 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:08,024 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:08,025 INFO  L82        PathProgramCache]: Analyzing trace with hash -1579224162, now seen corresponding path program 1 times
[2020-09-24 18:24:08,025 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:08,025 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025655350]
[2020-09-24 18:24:08,025 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:08,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:08,119 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:08,210 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:08,833 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:09,818 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:10,352 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:13,077 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:13,078 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 225
[2020-09-24 18:24:13,078 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 18:24:13,078 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5000
[2020-09-24 18:24:13,078 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:13,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 18:24:13,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-24 18:24:13,079 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 138
[2020-09-24 18:24:13,079 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:13,127 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:13,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:13,132 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:13,142 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:13,142 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:13,142 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:13,143 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 18:24:13,143 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:13,143 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:13,145 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:13,145 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 18:24:13,145 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 18:24:13,159 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:13,183 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:13,211 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:13,415 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:13,415 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 132
[2020-09-24 18:24:13,416 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:13,416 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 231
[2020-09-24 18:24:13,416 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:13,416 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:13,417 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:24:13,417 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 131
[2020-09-24 18:24:13,417 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:13,645 INFO  L134       CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 18:24:13,646 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025655350]
[2020-09-24 18:24:13,646 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:24:13,647 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-24 18:24:13,647 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665608345]
[2020-09-24 18:24:13,648 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 18:24:13,648 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:13,649 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 18:24:13,649 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-24 18:24:13,649 INFO  L87              Difference]: Start difference. First operand 999 states and 1294 transitions. Second operand 7 states.
[2020-09-24 18:24:15,942 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:15,943 INFO  L93              Difference]: Finished difference Result 2365 states and 3188 transitions.
[2020-09-24 18:24:15,946 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 18:24:15,946 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 214
[2020-09-24 18:24:15,947 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:15,957 INFO  L225             Difference]: With dead ends: 2365
[2020-09-24 18:24:15,958 INFO  L226             Difference]: Without dead ends: 1381
[2020-09-24 18:24:15,963 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-09-24 18:24:15,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1381 states.
[2020-09-24 18:24:16,007 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1015.
[2020-09-24 18:24:16,007 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1015 states.
[2020-09-24 18:24:16,012 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1197 transitions.
[2020-09-24 18:24:16,013 INFO  L78                 Accepts]: Start accepts. Automaton has 1015 states and 1197 transitions. Word has length 214
[2020-09-24 18:24:16,014 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:16,014 INFO  L479      AbstractCegarLoop]: Abstraction has 1015 states and 1197 transitions.
[2020-09-24 18:24:16,014 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 18:24:16,015 INFO  L276                IsEmpty]: Start isEmpty. Operand 1015 states and 1197 transitions.
[2020-09-24 18:24:16,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 294
[2020-09-24 18:24:16,022 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:16,023 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:16,023 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 18:24:16,023 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:16,024 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:16,028 INFO  L82        PathProgramCache]: Analyzing trace with hash 180980878, now seen corresponding path program 1 times
[2020-09-24 18:24:16,029 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:16,029 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543137237]
[2020-09-24 18:24:16,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:16,077 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:16,129 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:16,264 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:16,599 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:16,950 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:18,461 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:21,094 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:21,095 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 306
[2020-09-24 18:24:21,102 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 18:24:21,102 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5012
[2020-09-24 18:24:21,102 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:21,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:21,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 96
[2020-09-24 18:24:21,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 136
[2020-09-24 18:24:21,103 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:21,186 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:21,188 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:21,191 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:21,198 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:21,198 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:21,198 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:21,199 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:24:21,199 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:21,199 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:21,199 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:21,200 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:21,200 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:21,212 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:21,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:21,238 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:21,303 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:21,303 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 75
[2020-09-24 18:24:21,303 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:21,304 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 79
[2020-09-24 18:24:21,304 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:21,304 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:21,305 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:21,305 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-09-24 18:24:21,306 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:21,335 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2020-09-24 18:24:21,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:21,401 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:21,613 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:21,614 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 132
[2020-09-24 18:24:21,614 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:21,614 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 242
[2020-09-24 18:24:21,614 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:21,614 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:21,615 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:24:21,615 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 131
[2020-09-24 18:24:21,615 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:21,790 INFO  L134       CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 18:24:21,791 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543137237]
[2020-09-24 18:24:21,791 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:21,791 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 18:24:21,792 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810752447]
[2020-09-24 18:24:21,792 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 18:24:21,793 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:21,793 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 18:24:21,793 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-24 18:24:21,793 INFO  L87              Difference]: Start difference. First operand 1015 states and 1197 transitions. Second operand 8 states.
[2020-09-24 18:24:24,356 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:24,356 INFO  L93              Difference]: Finished difference Result 2219 states and 2696 transitions.
[2020-09-24 18:24:24,358 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2020-09-24 18:24:24,358 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 293
[2020-09-24 18:24:24,359 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:24,367 INFO  L225             Difference]: With dead ends: 2219
[2020-09-24 18:24:24,368 INFO  L226             Difference]: Without dead ends: 1219
[2020-09-24 18:24:24,371 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-09-24 18:24:24,372 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1219 states.
[2020-09-24 18:24:24,407 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1173.
[2020-09-24 18:24:24,407 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1173 states.
[2020-09-24 18:24:24,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1397 transitions.
[2020-09-24 18:24:24,414 INFO  L78                 Accepts]: Start accepts. Automaton has 1173 states and 1397 transitions. Word has length 293
[2020-09-24 18:24:24,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:24,414 INFO  L479      AbstractCegarLoop]: Abstraction has 1173 states and 1397 transitions.
[2020-09-24 18:24:24,415 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 18:24:24,415 INFO  L276                IsEmpty]: Start isEmpty. Operand 1173 states and 1397 transitions.
[2020-09-24 18:24:24,421 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 304
[2020-09-24 18:24:24,422 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:24,422 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:24,423 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 18:24:24,423 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:24,424 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:24,424 INFO  L82        PathProgramCache]: Analyzing trace with hash -557016468, now seen corresponding path program 1 times
[2020-09-24 18:24:24,425 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:24,425 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069602192]
[2020-09-24 18:24:24,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:24,487 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:24,540 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:24,636 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:24,759 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:25,501 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:26,036 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:26,156 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:26,517 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:26,851 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:29,505 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:29,506 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 316
[2020-09-24 18:24:29,506 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 8
[2020-09-24 18:24:29,506 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5014
[2020-09-24 18:24:29,506 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:29,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:29,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 106
[2020-09-24 18:24:29,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 136
[2020-09-24 18:24:29,507 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:29,579 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:29,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:29,584 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:29,590 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:29,590 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:29,591 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:29,591 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 18:24:29,591 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:29,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:29,592 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:29,592 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:29,592 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:29,604 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:29,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:29,632 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:29,687 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:29,687 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 85
[2020-09-24 18:24:29,688 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:29,688 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 67
[2020-09-24 18:24:29,688 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:29,688 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:29,688 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:29,688 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 77
[2020-09-24 18:24:29,689 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:29,713 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110
[2020-09-24 18:24:29,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:29,761 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:29,960 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:29,960 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 132
[2020-09-24 18:24:29,961 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:29,961 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 223
[2020-09-24 18:24:29,961 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:29,961 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:29,961 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:24:29,962 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 131
[2020-09-24 18:24:29,962 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:30,078 INFO  L134       CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 18:24:30,078 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069602192]
[2020-09-24 18:24:30,078 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:30,078 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 18:24:30,079 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362353878]
[2020-09-24 18:24:30,079 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 18:24:30,080 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:30,080 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 18:24:30,080 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-24 18:24:30,080 INFO  L87              Difference]: Start difference. First operand 1173 states and 1397 transitions. Second operand 8 states.
[2020-09-24 18:24:32,951 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:32,951 INFO  L93              Difference]: Finished difference Result 3165 states and 3982 transitions.
[2020-09-24 18:24:32,951 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-09-24 18:24:32,952 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 303
[2020-09-24 18:24:32,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:32,959 INFO  L225             Difference]: With dead ends: 3165
[2020-09-24 18:24:32,959 INFO  L226             Difference]: Without dead ends: 1323
[2020-09-24 18:24:32,965 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 18:24:32,966 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1323 states.
[2020-09-24 18:24:32,995 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1267.
[2020-09-24 18:24:32,995 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1267 states.
[2020-09-24 18:24:32,999 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 1468 transitions.
[2020-09-24 18:24:32,999 INFO  L78                 Accepts]: Start accepts. Automaton has 1267 states and 1468 transitions. Word has length 303
[2020-09-24 18:24:33,000 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:33,000 INFO  L479      AbstractCegarLoop]: Abstraction has 1267 states and 1468 transitions.
[2020-09-24 18:24:33,000 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 18:24:33,000 INFO  L276                IsEmpty]: Start isEmpty. Operand 1267 states and 1468 transitions.
[2020-09-24 18:24:33,009 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 419
[2020-09-24 18:24:33,009 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:33,009 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:33,009 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 18:24:33,010 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:33,010 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:33,010 INFO  L82        PathProgramCache]: Analyzing trace with hash -131491676, now seen corresponding path program 1 times
[2020-09-24 18:24:33,010 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:33,011 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691687425]
[2020-09-24 18:24:33,011 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:33,088 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:33,170 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:33,310 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:33,478 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:33,695 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:34,326 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:38,121 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:38,122 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 433
[2020-09-24 18:24:38,122 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-24 18:24:38,122 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5025
[2020-09-24 18:24:38,122 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:38,122 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:38,122 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 222
[2020-09-24 18:24:38,123 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 137
[2020-09-24 18:24:38,123 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:38,194 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:24:38,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:38,197 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:38,201 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:38,201 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 18
[2020-09-24 18:24:38,201 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:38,201 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 18:24:38,201 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:38,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:38,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:38,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:38,202 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:38,213 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 18:24:38,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:38,225 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:38,251 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:38,251 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 120
[2020-09-24 18:24:38,251 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:38,252 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 31
[2020-09-24 18:24:38,252 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:38,252 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:24:38,252 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:38,252 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:24:38,253 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:38,283 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145
[2020-09-24 18:24:38,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:38,302 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:38,318 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:38,318 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 76
[2020-09-24 18:24:38,318 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:38,318 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-24 18:24:38,319 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:38,319 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:24:38,319 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:24:38,319 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 67
[2020-09-24 18:24:38,319 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:24:38,335 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2020-09-24 18:24:38,352 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:38,370 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:38,553 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:24:38,554 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 132
[2020-09-24 18:24:38,554 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:24:38,555 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 200
[2020-09-24 18:24:38,555 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:24:38,555 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 18:24:38,556 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-09-24 18:24:38,556 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 131
[2020-09-24 18:24:38,556 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:24:38,836 INFO  L134       CoverageAnalysis]: Checked inductivity of 463 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2020-09-24 18:24:38,836 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691687425]
[2020-09-24 18:24:38,836 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 18:24:38,837 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 18:24:38,837 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321821168]
[2020-09-24 18:24:38,838 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 18:24:38,838 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:24:38,838 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 18:24:38,839 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-24 18:24:38,839 INFO  L87              Difference]: Start difference. First operand 1267 states and 1468 transitions. Second operand 7 states.
[2020-09-24 18:24:40,947 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:24:40,948 INFO  L93              Difference]: Finished difference Result 3320 states and 3965 transitions.
[2020-09-24 18:24:40,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 18:24:40,948 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 418
[2020-09-24 18:24:40,949 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:24:40,959 INFO  L225             Difference]: With dead ends: 3320
[2020-09-24 18:24:40,959 INFO  L226             Difference]: Without dead ends: 2068
[2020-09-24 18:24:40,963 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-09-24 18:24:40,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2068 states.
[2020-09-24 18:24:41,013 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2036.
[2020-09-24 18:24:41,013 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2036 states.
[2020-09-24 18:24:41,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 2360 transitions.
[2020-09-24 18:24:41,021 INFO  L78                 Accepts]: Start accepts. Automaton has 2036 states and 2360 transitions. Word has length 418
[2020-09-24 18:24:41,021 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:24:41,022 INFO  L479      AbstractCegarLoop]: Abstraction has 2036 states and 2360 transitions.
[2020-09-24 18:24:41,022 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 18:24:41,022 INFO  L276                IsEmpty]: Start isEmpty. Operand 2036 states and 2360 transitions.
[2020-09-24 18:24:41,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 433
[2020-09-24 18:24:41,036 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 18:24:41,037 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:41,037 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 18:24:41,038 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:24:41,038 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:24:41,038 INFO  L82        PathProgramCache]: Analyzing trace with hash 2103834033, now seen corresponding path program 1 times
[2020-09-24 18:24:41,039 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:24:41,039 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525757162]
[2020-09-24 18:24:41,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:24:41,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:24:41,211 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:24:41,329 FATAL L256   erpolLogProxyWrapper]: Now shrinking...