/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-0f64333
[2020-10-27 04:07:04,424 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-27 04:07:04,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-27 04:07:04,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-27 04:07:04,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-27 04:07:04,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-27 04:07:04,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-27 04:07:04,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-27 04:07:04,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-27 04:07:04,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-27 04:07:04,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-10-27 04:07:04,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-27 04:07:04,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-27 04:07:04,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-27 04:07:04,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-27 04:07:04,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-27 04:07:04,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-27 04:07:04,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-27 04:07:04,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-27 04:07:04,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-27 04:07:04,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-27 04:07:04,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-27 04:07:04,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-10-27 04:07:04,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-27 04:07:04,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-27 04:07:04,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-27 04:07:04,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-27 04:07:04,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-27 04:07:04,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-27 04:07:04,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-27 04:07:04,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-27 04:07:04,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-27 04:07:04,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-27 04:07:04,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-27 04:07:04,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-27 04:07:04,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-27 04:07:04,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-27 04:07:04,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-27 04:07:04,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-27 04:07:04,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-27 04:07:04,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-10-27 04:07:04,604 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
[2020-10-27 04:07:04,652 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-27 04:07:04,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-27 04:07:04,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-27 04:07:04,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-10-27 04:07:04,657 INFO L138 SettingsManager]: * Use SBE=true
[2020-10-27 04:07:04,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-27 04:07:04,658 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-27 04:07:04,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-27 04:07:04,658 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-27 04:07:04,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-27 04:07:04,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-27 04:07:04,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-27 04:07:04,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-27 04:07:04,660 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-27 04:07:04,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-27 04:07:04,660 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-27 04:07:04,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-27 04:07:04,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-27 04:07:04,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-10-27 04:07:04,661 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-27 04:07:04,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-27 04:07:04,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-27 04:07:04,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-27 04:07:04,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-10-27 04:07:04,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-27 04:07:04,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-10-27 04:07:04,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-27 04:07:04,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-27 04:07:04,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-10-27 04:07:04,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true;
[2020-10-27 04:07:05,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-27 04:07:05,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-27 04:07:05,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-27 04:07:05,123 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-27 04:07:05,124 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-27 04:07:05,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c
[2020-10-27 04:07:05,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4a27d0d3/99ea74449e5041b19eaf350cba6d8e0e/FLAG2859f1546
[2020-10-27 04:07:05,828 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-27 04:07:05,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i15_o15-2.c
[2020-10-27 04:07:05,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4a27d0d3/99ea74449e5041b19eaf350cba6d8e0e/FLAG2859f1546
[2020-10-27 04:07:06,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4a27d0d3/99ea74449e5041b19eaf350cba6d8e0e
[2020-10-27 04:07:06,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-27 04:07:06,164 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-27 04:07:06,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-27 04:07:06,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-27 04:07:06,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-27 04:07:06,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:07:06" (1/1) ...
[2020-10-27 04:07:06,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558824d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:06, skipping insertion in model container
[2020-10-27 04:07:06,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:07:06" (1/1) ...
[2020-10-27 04:07:06,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-27 04:07:06,205 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-10-27 04:07:06,364 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-27 04:07:06,375 INFO L203 MainTranslator]: Completed pre-run
[2020-10-27 04:07:06,393 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-27 04:07:06,411 INFO L208 MainTranslator]: Completed translation
[2020-10-27 04:07:06,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:06 WrapperNode
[2020-10-27 04:07:06,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-27 04:07:06,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-27 04:07:06,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-27 04:07:06,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-27 04:07:06,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:06" (1/1) ...
[2020-10-27 04:07:06,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:06" (1/1) ...
[2020-10-27 04:07:06,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:06" (1/1) ...
[2020-10-27 04:07:06,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:06" (1/1) ...
[2020-10-27 04:07:06,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:06" (1/1) ...
[2020-10-27 04:07:06,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:06" (1/1) ...
[2020-10-27 04:07:06,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:06" (1/1) ...
[2020-10-27 04:07:06,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-27 04:07:06,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-27 04:07:06,450 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-27 04:07:06,450 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-27 04:07:06,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:06" (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
[2020-10-27 04:07:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-27 04:07:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-27 04:07:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-27 04:07:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure id
[2020-10-27 04:07:06,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-10-27 04:07:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-27 04:07:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-10-27 04:07:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-27 04:07:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-27 04:07:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-27 04:07:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure id
[2020-10-27 04:07:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-10-27 04:07:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-27 04:07:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-27 04:07:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-27 04:07:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-10-27 04:07:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-10-27 04:07:06,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-27 04:07:06,923 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-27 04:07:06,923 INFO L298 CfgBuilder]: Removed 0 assume(true) statements.
[2020-10-27 04:07:06,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:07:06 BoogieIcfgContainer
[2020-10-27 04:07:06,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-27 04:07:06,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-27 04:07:06,929 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-27 04:07:06,933 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-27 04:07:06,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:07:06" (1/3) ...
[2020-10-27 04:07:06,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734171a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:07:06, skipping insertion in model container
[2020-10-27 04:07:06,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:07:06" (2/3) ...
[2020-10-27 04:07:06,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734171a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:07:06, skipping insertion in model container
[2020-10-27 04:07:06,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:07:06" (3/3) ...
[2020-10-27 04:07:06,939 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i15_o15-2.c
[2020-10-27 04:07:06,953 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-27 04:07:06,959 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-27 04:07:06,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-27 04:07:07,021 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-27 04:07:07,021 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-27 04:07:07,022 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-27 04:07:07,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-27 04:07:07,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-27 04:07:07,022 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-27 04:07:07,023 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-27 04:07:07,023 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-27 04:07:07,048 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states.
[2020-10-27 04:07:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-27 04:07:07,057 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:07,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:07,058 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:07,068 INFO L82 PathProgramCache]: Analyzing trace with hash 560135365, now seen corresponding path program 1 times
[2020-10-27 04:07:07,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:07,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869697356]
[2020-10-27 04:07:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:07,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:07,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:07,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:07,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666
[2020-10-27 04:07:07,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:07,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 04:07:07,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:07,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-27 04:07:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-27 04:07:08,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:08,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:08,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:08,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:08,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-27 04:07:08,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:08,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:08,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:08,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:08,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:08,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-27 04:07:08,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:08,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 04:07:08,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:08,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-27 04:07:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-27 04:07:08,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869697356]
[2020-10-27 04:07:08,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-27 04:07:08,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-27 04:07:08,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075217708]
[2020-10-27 04:07:08,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-27 04:07:08,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:08,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-27 04:07:08,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-10-27 04:07:08,230 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states.
[2020-10-27 04:07:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:08,471 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions.
[2020-10-27 04:07:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-10-27 04:07:08,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15
[2020-10-27 04:07:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:08,484 INFO L225 Difference]: With dead ends: 36
[2020-10-27 04:07:08,484 INFO L226 Difference]: Without dead ends: 20
[2020-10-27 04:07:08,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2020-10-27 04:07:08,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2020-10-27 04:07:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2020-10-27 04:07:08,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2020-10-27 04:07:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions.
[2020-10-27 04:07:08,538 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15
[2020-10-27 04:07:08,538 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:08,538 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions.
[2020-10-27 04:07:08,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-27 04:07:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions.
[2020-10-27 04:07:08,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-10-27 04:07:08,541 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:08,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:08,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-27 04:07:08,542 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:08,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1295611761, now seen corresponding path program 1 times
[2020-10-27 04:07:08,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:08,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871727986]
[2020-10-27 04:07:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:08,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:09,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:09,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:09,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650
[2020-10-27 04:07:09,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-27 04:07:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-10-27 04:07:09,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:09,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:09,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:09,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:09,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:09,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:09,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-27 04:07:09,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:09,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:09,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-27 04:07:09,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:09,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:09,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:09,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:09,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49
[2020-10-27 04:07:09,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-27 04:07:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-10-27 04:07:09,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:09,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:09,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:09,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:09,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:09,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-27 04:07:09,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:09,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-27 04:07:09,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871727986]
[2020-10-27 04:07:09,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:09,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-27 04:07:09,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726583137]
[2020-10-27 04:07:09,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-27 04:07:09,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:09,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-27 04:07:09,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2020-10-27 04:07:09,526 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states.
[2020-10-27 04:07:09,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:09,811 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions.
[2020-10-27 04:07:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-10-27 04:07:09,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21
[2020-10-27 04:07:09,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:09,813 INFO L225 Difference]: With dead ends: 28
[2020-10-27 04:07:09,814 INFO L226 Difference]: Without dead ends: 23
[2020-10-27 04:07:09,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-27 04:07:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2020-10-27 04:07:09,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2020-10-27 04:07:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states.
[2020-10-27 04:07:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions.
[2020-10-27 04:07:09,823 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21
[2020-10-27 04:07:09,824 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:09,824 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions.
[2020-10-27 04:07:09,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-27 04:07:09,824 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions.
[2020-10-27 04:07:09,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-27 04:07:09,825 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:09,826 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:09,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-27 04:07:09,826 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:09,827 INFO L82 PathProgramCache]: Analyzing trace with hash -116387003, now seen corresponding path program 2 times
[2020-10-27 04:07:09,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:09,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258824937]
[2020-10-27 04:07:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:09,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:10,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:10,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:07:10,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819
[2020-10-27 04:07:10,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-27 04:07:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-10-27 04:07:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:10,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:10,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:10,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:10,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-27 04:07:10,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:10,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:10,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:10,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:10,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:10,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:10,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:10,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:10,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-10-27 04:07:10,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:10,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-27 04:07:10,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:10,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22
[2020-10-27 04:07:10,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:10,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:10,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:10,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:10,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:10,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-27 04:07:10,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:10,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:10,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:10,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:10,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:10,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-27 04:07:10,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:10,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2020-10-27 04:07:10,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258824937]
[2020-10-27 04:07:10,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:10,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-27 04:07:10,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209765511]
[2020-10-27 04:07:10,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-27 04:07:10,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:10,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-27 04:07:10,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-10-27 04:07:10,897 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 8 states.
[2020-10-27 04:07:11,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:11,161 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions.
[2020-10-27 04:07:11,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-10-27 04:07:11,162 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27
[2020-10-27 04:07:11,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:11,163 INFO L225 Difference]: With dead ends: 31
[2020-10-27 04:07:11,164 INFO L226 Difference]: Without dead ends: 26
[2020-10-27 04:07:11,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-10-27 04:07:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2020-10-27 04:07:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2020-10-27 04:07:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2020-10-27 04:07:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions.
[2020-10-27 04:07:11,172 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 27
[2020-10-27 04:07:11,172 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:11,173 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions.
[2020-10-27 04:07:11,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-27 04:07:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions.
[2020-10-27 04:07:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-10-27 04:07:11,174 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:11,174 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:11,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-27 04:07:11,175 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:11,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:11,175 INFO L82 PathProgramCache]: Analyzing trace with hash -738125937, now seen corresponding path program 3 times
[2020-10-27 04:07:11,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:11,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644156740]
[2020-10-27 04:07:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:11,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:11,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:12,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:12,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:07:12,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:12,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050
[2020-10-27 04:07:12,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-10-27 04:07:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21
[2020-10-27 04:07:12,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:12,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:12,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:12,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:12,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-27 04:07:12,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:12,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:12,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:12,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:12,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:12,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:12,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:12,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50
[2020-10-27 04:07:12,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-10-27 04:07:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30
[2020-10-27 04:07:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:12,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:12,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:12,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:12,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:12,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:12,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36
[2020-10-27 04:07:12,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:12,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:07:12,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:12,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:07:12,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:12,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:12,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:12,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:12,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-27 04:07:12,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:12,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:12,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:12,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:12,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:12,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:12,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:12,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-27 04:07:12,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:12,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:12,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:12,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:12,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2020-10-27 04:07:12,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644156740]
[2020-10-27 04:07:12,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:12,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-10-27 04:07:12,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973777284]
[2020-10-27 04:07:12,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-27 04:07:12,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:12,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-27 04:07:12,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2020-10-27 04:07:12,501 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 10 states.
[2020-10-27 04:07:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:12,772 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions.
[2020-10-27 04:07:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-10-27 04:07:12,773 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33
[2020-10-27 04:07:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:12,774 INFO L225 Difference]: With dead ends: 34
[2020-10-27 04:07:12,774 INFO L226 Difference]: Without dead ends: 29
[2020-10-27 04:07:12,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240
[2020-10-27 04:07:12,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2020-10-27 04:07:12,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2020-10-27 04:07:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2020-10-27 04:07:12,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions.
[2020-10-27 04:07:12,783 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 33
[2020-10-27 04:07:12,783 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:12,783 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions.
[2020-10-27 04:07:12,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-27 04:07:12,783 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions.
[2020-10-27 04:07:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-10-27 04:07:12,785 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:12,785 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:12,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-27 04:07:12,785 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:12,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:12,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1342585285, now seen corresponding path program 4 times
[2020-10-27 04:07:12,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:12,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343451732]
[2020-10-27 04:07:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:12,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:13,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:13,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 04:07:13,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:13,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918
[2020-10-27 04:07:13,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-10-27 04:07:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-10-27 04:07:13,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:13,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:13,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:13,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:13,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:13,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:07:13,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:13,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:13,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:13,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:07:13,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:13,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69
[2020-10-27 04:07:13,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-10-27 04:07:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:13,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-27 04:07:13,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:13,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:13,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:13,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:13,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57
[2020-10-27 04:07:13,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:07:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:07:13,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:13,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:13,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:13,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:13,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:13,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-10-27 04:07:13,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:07:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:07:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:14,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:14,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:14,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:14,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-10-27 04:07:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:14,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:14,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:14,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:14,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:14,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:14,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-27 04:07:14,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:14,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2020-10-27 04:07:14,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343451732]
[2020-10-27 04:07:14,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:14,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-10-27 04:07:14,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078721305]
[2020-10-27 04:07:14,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-27 04:07:14,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:14,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-27 04:07:14,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2020-10-27 04:07:14,089 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 10 states.
[2020-10-27 04:07:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:14,484 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions.
[2020-10-27 04:07:14,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-10-27 04:07:14,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39
[2020-10-27 04:07:14,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:14,486 INFO L225 Difference]: With dead ends: 37
[2020-10-27 04:07:14,486 INFO L226 Difference]: Without dead ends: 32
[2020-10-27 04:07:14,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272
[2020-10-27 04:07:14,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2020-10-27 04:07:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2020-10-27 04:07:14,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-10-27 04:07:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions.
[2020-10-27 04:07:14,495 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 39
[2020-10-27 04:07:14,496 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:14,496 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions.
[2020-10-27 04:07:14,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-27 04:07:14,496 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions.
[2020-10-27 04:07:14,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-10-27 04:07:14,498 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:14,498 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:14,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-27 04:07:14,498 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:14,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:14,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1660180111, now seen corresponding path program 5 times
[2020-10-27 04:07:14,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:14,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898979154]
[2020-10-27 04:07:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:14,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:15,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:15,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65
[2020-10-27 04:07:15,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:15,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1303
[2020-10-27 04:07:15,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:15,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-10-27 04:07:15,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:15,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:07:15,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:15,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:15,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:15,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:15,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:15,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:15,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-27 04:07:15,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:15,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:15,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:15,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:15,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:07:15,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:15,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87
[2020-10-27 04:07:15,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-10-27 04:07:15,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-27 04:07:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:16,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:16,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:16,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:07:16,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:16,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88
[2020-10-27 04:07:16,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:16,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:07:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-27 04:07:16,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:16,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:16,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:16,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:16,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53
[2020-10-27 04:07:16,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:07:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:07:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:16,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:16,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:16,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:16,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:16,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28
[2020-10-27 04:07:16,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:16,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:07:16,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:16,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:07:16,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:16,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:16,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:16,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:16,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-27 04:07:16,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:16,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:16,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:16,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:16,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:16,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:16,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-27 04:07:16,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:16,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:16,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2020-10-27 04:07:16,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898979154]
[2020-10-27 04:07:16,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:16,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-10-27 04:07:16,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182680933]
[2020-10-27 04:07:16,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-27 04:07:16,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:16,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-27 04:07:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2020-10-27 04:07:16,352 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 12 states.
[2020-10-27 04:07:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:16,843 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions.
[2020-10-27 04:07:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-10-27 04:07:16,844 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45
[2020-10-27 04:07:16,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:16,845 INFO L225 Difference]: With dead ends: 40
[2020-10-27 04:07:16,845 INFO L226 Difference]: Without dead ends: 35
[2020-10-27 04:07:16,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380
[2020-10-27 04:07:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-10-27 04:07:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2020-10-27 04:07:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2020-10-27 04:07:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions.
[2020-10-27 04:07:16,854 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 45
[2020-10-27 04:07:16,854 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:16,854 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions.
[2020-10-27 04:07:16,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-27 04:07:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions.
[2020-10-27 04:07:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2020-10-27 04:07:16,856 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:16,856 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:16,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-10-27 04:07:16,857 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:16,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:16,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1624338501, now seen corresponding path program 6 times
[2020-10-27 04:07:16,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:16,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075359049]
[2020-10-27 04:07:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:16,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:16,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:18,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:18,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-10-27 04:07:18,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1720
[2020-10-27 04:07:18,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-10-27 04:07:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:18,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36
[2020-10-27 04:07:18,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:18,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:18,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:18,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:18,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:18,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:18,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:07:18,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:18,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:18,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:18,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:18,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:18,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:18,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 04:07:18,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:18,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128
[2020-10-27 04:07:18,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-10-27 04:07:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:18,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54
[2020-10-27 04:07:18,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:18,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:18,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:18,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:07:18,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100
[2020-10-27 04:07:18,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:07:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:07:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:18,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:19,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:19,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:07:19,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:19,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69
[2020-10-27 04:07:19,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:19,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:07:19,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-27 04:07:19,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:19,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:19,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:19,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49
[2020-10-27 04:07:19,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:07:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:19,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:07:19,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:19,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:19,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:19,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:19,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:19,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31
[2020-10-27 04:07:19,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:07:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:07:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:19,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:19,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:19,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:19,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:19,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:19,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-10-27 04:07:19,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:19,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:19,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:19,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:19,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:19,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-27 04:07:19,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 10 proven. 67 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2020-10-27 04:07:19,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075359049]
[2020-10-27 04:07:19,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:19,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13
[2020-10-27 04:07:19,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866549368]
[2020-10-27 04:07:19,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-27 04:07:19,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:19,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-27 04:07:19,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2020-10-27 04:07:19,301 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 13 states.
[2020-10-27 04:07:19,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:19,796 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions.
[2020-10-27 04:07:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-10-27 04:07:19,796 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51
[2020-10-27 04:07:19,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:19,798 INFO L225 Difference]: With dead ends: 43
[2020-10-27 04:07:19,798 INFO L226 Difference]: Without dead ends: 38
[2020-10-27 04:07:19,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462
[2020-10-27 04:07:19,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2020-10-27 04:07:19,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2020-10-27 04:07:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2020-10-27 04:07:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions.
[2020-10-27 04:07:19,813 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 51
[2020-10-27 04:07:19,814 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:19,814 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions.
[2020-10-27 04:07:19,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-27 04:07:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions.
[2020-10-27 04:07:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2020-10-27 04:07:19,816 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:19,816 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:19,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-10-27 04:07:19,816 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:19,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:19,817 INFO L82 PathProgramCache]: Analyzing trace with hash 502547855, now seen corresponding path program 7 times
[2020-10-27 04:07:19,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:19,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320608379]
[2020-10-27 04:07:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:19,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:21,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:21,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81
[2020-10-27 04:07:21,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2107
[2020-10-27 04:07:21,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-27 04:07:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-27 04:07:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:21,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:22,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:22,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:22,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:07:22,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:22,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:22,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:22,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65
[2020-10-27 04:07:22,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:22,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130
[2020-10-27 04:07:22,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-27 04:07:22,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:22,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62
[2020-10-27 04:07:22,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:22,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:22,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:22,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:22,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 04:07:22,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:22,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131
[2020-10-27 04:07:22,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:07:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-10-27 04:07:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:22,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:22,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:22,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:07:22,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:22,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79
[2020-10-27 04:07:22,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:07:22,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:22,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:07:22,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:22,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:22,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:22,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:07:22,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:22,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67
[2020-10-27 04:07:22,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:07:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:22,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-27 04:07:22,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:22,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:22,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:22,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:22,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-10-27 04:07:22,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:07:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:07:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:22,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:22,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:22,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:22,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:22,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-27 04:07:22,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:22,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:07:22,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:07:22,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:22,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:22,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:22,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:22,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:22,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-27 04:07:22,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:22,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:22,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:22,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:22,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:22,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:22,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:22,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:22,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:07:22,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:22,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:22,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:22,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:22,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 6 proven. 84 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked.
[2020-10-27 04:07:22,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320608379]
[2020-10-27 04:07:22,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:22,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-10-27 04:07:22,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827983961]
[2020-10-27 04:07:22,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-27 04:07:22,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:22,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-27 04:07:22,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-10-27 04:07:22,738 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 14 states.
[2020-10-27 04:07:23,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:23,332 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions.
[2020-10-27 04:07:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2020-10-27 04:07:23,334 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57
[2020-10-27 04:07:23,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:23,336 INFO L225 Difference]: With dead ends: 46
[2020-10-27 04:07:23,336 INFO L226 Difference]: Without dead ends: 41
[2020-10-27 04:07:23,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552
[2020-10-27 04:07:23,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2020-10-27 04:07:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2020-10-27 04:07:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2020-10-27 04:07:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions.
[2020-10-27 04:07:23,344 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 57
[2020-10-27 04:07:23,344 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:23,345 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions.
[2020-10-27 04:07:23,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-27 04:07:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions.
[2020-10-27 04:07:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2020-10-27 04:07:23,346 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:23,346 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:23,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-10-27 04:07:23,346 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:23,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:23,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1459767611, now seen corresponding path program 8 times
[2020-10-27 04:07:23,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:23,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99091913]
[2020-10-27 04:07:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:23,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:23,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:26,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:26,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-10-27 04:07:26,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:26,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2661
[2020-10-27 04:07:26,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-27 04:07:26,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:26,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-27 04:07:26,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:26,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:26,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:26,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:26,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:26,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-27 04:07:26,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:26,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:26,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:26,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-10-27 04:07:26,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175
[2020-10-27 04:07:26,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-27 04:07:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70
[2020-10-27 04:07:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:26,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:26,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:26,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65
[2020-10-27 04:07:26,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156
[2020-10-27 04:07:26,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-10-27 04:07:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63
[2020-10-27 04:07:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:26,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:26,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:26,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 04:07:26,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107
[2020-10-27 04:07:26,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:07:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-10-27 04:07:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:26,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:26,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:26,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:26,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:07:26,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90
[2020-10-27 04:07:26,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:07:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:07:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:26,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:26,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:07:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:26,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57
[2020-10-27 04:07:26,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:07:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-27 04:07:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:26,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:26,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:26,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:26,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:26,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39
[2020-10-27 04:07:26,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:07:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:07:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:26,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:26,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:26,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:26,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:26,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-10-27 04:07:26,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:07:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:07:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:27,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:27,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:27,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-10-27 04:07:27,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:27,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:27,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:27,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:27,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:27,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-27 04:07:27,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 12 proven. 123 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked.
[2020-10-27 04:07:27,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99091913]
[2020-10-27 04:07:27,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:27,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2020-10-27 04:07:27,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103600019]
[2020-10-27 04:07:27,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-27 04:07:27,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:27,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-27 04:07:27,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210
[2020-10-27 04:07:27,136 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 15 states.
[2020-10-27 04:07:27,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:27,815 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions.
[2020-10-27 04:07:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-10-27 04:07:27,816 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63
[2020-10-27 04:07:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:27,818 INFO L225 Difference]: With dead ends: 49
[2020-10-27 04:07:27,818 INFO L226 Difference]: Without dead ends: 44
[2020-10-27 04:07:27,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650
[2020-10-27 04:07:27,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2020-10-27 04:07:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2020-10-27 04:07:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2020-10-27 04:07:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions.
[2020-10-27 04:07:27,826 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 63
[2020-10-27 04:07:27,826 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:27,826 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions.
[2020-10-27 04:07:27,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-27 04:07:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions.
[2020-10-27 04:07:27,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2020-10-27 04:07:27,828 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:27,828 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:27,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-10-27 04:07:27,828 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:27,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:27,829 INFO L82 PathProgramCache]: Analyzing trace with hash 273998991, now seen corresponding path program 9 times
[2020-10-27 04:07:27,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:27,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449566386]
[2020-10-27 04:07:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:27,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:30,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:30,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97
[2020-10-27 04:07:30,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:30,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3112
[2020-10-27 04:07:30,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22
[2020-10-27 04:07:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51
[2020-10-27 04:07:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:30,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:31,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:31,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:31,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:31,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:07:31,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:31,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:31,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:31,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:31,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:31,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81
[2020-10-27 04:07:31,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:31,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190
[2020-10-27 04:07:31,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:31,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22
[2020-10-27 04:07:31,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:31,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78
[2020-10-27 04:07:31,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:31,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:31,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:31,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-10-27 04:07:31,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118
[2020-10-27 04:07:31,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21
[2020-10-27 04:07:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-10-27 04:07:31,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:31,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:31,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:31,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65
[2020-10-27 04:07:31,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171
[2020-10-27 04:07:31,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-10-27 04:07:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:31,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63
[2020-10-27 04:07:31,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:31,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:31,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:31,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:31,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 04:07:31,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:31,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139
[2020-10-27 04:07:31,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:07:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:31,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-10-27 04:07:31,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:31,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:31,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:31,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:07:31,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76
[2020-10-27 04:07:31,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:07:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:07:31,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:31,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:31,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:31,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:31,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:07:31,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:31,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49
[2020-10-27 04:07:31,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:07:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:31,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-27 04:07:31,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:31,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:31,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:31,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:31,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:31,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-10-27 04:07:31,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:07:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:31,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:07:31,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:32,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:32,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:32,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:32,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:32,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-27 04:07:32,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:07:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:07:32,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:32,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:32,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:32,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-27 04:07:32,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:32,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:32,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:32,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:32,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:32,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:32,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-27 04:07:32,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 26 proven. 145 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked.
[2020-10-27 04:07:32,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449566386]
[2020-10-27 04:07:32,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:32,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16
[2020-10-27 04:07:32,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803717417]
[2020-10-27 04:07:32,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-27 04:07:32,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:32,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-27 04:07:32,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240
[2020-10-27 04:07:32,158 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 16 states.
[2020-10-27 04:07:32,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:32,880 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions.
[2020-10-27 04:07:32,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-10-27 04:07:32,880 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69
[2020-10-27 04:07:32,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:32,882 INFO L225 Difference]: With dead ends: 52
[2020-10-27 04:07:32,882 INFO L226 Difference]: Without dead ends: 47
[2020-10-27 04:07:32,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756
[2020-10-27 04:07:32,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2020-10-27 04:07:32,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2020-10-27 04:07:32,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-10-27 04:07:32,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions.
[2020-10-27 04:07:32,900 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 69
[2020-10-27 04:07:32,900 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:32,900 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions.
[2020-10-27 04:07:32,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-27 04:07:32,900 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions.
[2020-10-27 04:07:32,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2020-10-27 04:07:32,901 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:32,902 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:32,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-10-27 04:07:32,907 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:32,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:32,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1458107067, now seen corresponding path program 10 times
[2020-10-27 04:07:32,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:32,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71391020]
[2020-10-27 04:07:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:33,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:35,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:35,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105
[2020-10-27 04:07:35,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:35,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2738
[2020-10-27 04:07:35,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:35,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24
[2020-10-27 04:07:35,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-10-27 04:07:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:35,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:35,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:35,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:35,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:35,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-27 04:07:35,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:35,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:35,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:35,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:35,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:35,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:35,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:35,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-10-27 04:07:35,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:35,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172
[2020-10-27 04:07:35,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24
[2020-10-27 04:07:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86
[2020-10-27 04:07:35,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:35,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:36,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:36,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81
[2020-10-27 04:07:36,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:36,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170
[2020-10-27 04:07:36,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-10-27 04:07:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79
[2020-10-27 04:07:36,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:36,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:36,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:36,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-10-27 04:07:36,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:36,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138
[2020-10-27 04:07:36,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:36,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21
[2020-10-27 04:07:36,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:36,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-10-27 04:07:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:36,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:36,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:36,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:36,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65
[2020-10-27 04:07:36,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:36,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153
[2020-10-27 04:07:36,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-10-27 04:07:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63
[2020-10-27 04:07:36,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:36,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:36,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:36,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:36,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 04:07:36,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:36,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70
[2020-10-27 04:07:36,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:07:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:36,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-10-27 04:07:36,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:36,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:36,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:36,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:07:36,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:36,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53
[2020-10-27 04:07:36,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:36,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:07:36,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:36,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:07:36,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:36,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:36,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:36,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:36,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:07:36,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:36,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-10-27 04:07:36,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:07:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:36,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-27 04:07:36,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:36,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:36,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:36,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:36,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:36,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-27 04:07:36,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:07:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:07:36,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:36,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:36,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:36,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:36,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-10-27 04:07:36,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:07:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:36,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:07:36,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:36,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:36,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:36,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:36,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-27 04:07:36,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:36,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:36,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:36,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-27 04:07:36,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 37 proven. 181 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked.
[2020-10-27 04:07:37,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71391020]
[2020-10-27 04:07:37,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:37,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18
[2020-10-27 04:07:37,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329256976]
[2020-10-27 04:07:37,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-27 04:07:37,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:37,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-27 04:07:37,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306
[2020-10-27 04:07:37,003 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 18 states.
[2020-10-27 04:07:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:37,813 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions.
[2020-10-27 04:07:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-10-27 04:07:37,813 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 75
[2020-10-27 04:07:37,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:37,815 INFO L225 Difference]: With dead ends: 55
[2020-10-27 04:07:37,815 INFO L226 Difference]: Without dead ends: 50
[2020-10-27 04:07:37,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930
[2020-10-27 04:07:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-10-27 04:07:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2020-10-27 04:07:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-10-27 04:07:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions.
[2020-10-27 04:07:37,823 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 75
[2020-10-27 04:07:37,824 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:37,824 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions.
[2020-10-27 04:07:37,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-27 04:07:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions.
[2020-10-27 04:07:37,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2020-10-27 04:07:37,825 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:37,825 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:37,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-10-27 04:07:37,826 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:37,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:37,826 INFO L82 PathProgramCache]: Analyzing trace with hash -764791921, now seen corresponding path program 11 times
[2020-10-27 04:07:37,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:37,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903141206]
[2020-10-27 04:07:37,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:37,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:38,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:41,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:41,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113
[2020-10-27 04:07:41,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:41,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3995
[2020-10-27 04:07:41,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26
[2020-10-27 04:07:41,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:41,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61
[2020-10-27 04:07:41,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:41,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:41,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:41,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:41,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:41,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:41,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:07:41,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:41,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:41,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:42,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:42,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97
[2020-10-27 04:07:42,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:42,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414
[2020-10-27 04:07:42,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:42,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26
[2020-10-27 04:07:42,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94
[2020-10-27 04:07:42,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:42,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:42,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:42,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:42,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-10-27 04:07:42,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:42,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280
[2020-10-27 04:07:42,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25
[2020-10-27 04:07:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87
[2020-10-27 04:07:42,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:42,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:42,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:42,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81
[2020-10-27 04:07:42,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202
[2020-10-27 04:07:42,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:42,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-10-27 04:07:42,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:42,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79
[2020-10-27 04:07:42,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:42,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:42,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:43,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:43,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-10-27 04:07:43,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:43,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157
[2020-10-27 04:07:43,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21
[2020-10-27 04:07:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-10-27 04:07:43,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:43,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:43,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:43,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65
[2020-10-27 04:07:43,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:43,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147
[2020-10-27 04:07:43,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-10-27 04:07:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63
[2020-10-27 04:07:43,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:43,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:43,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:43,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:43,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 04:07:43,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:43,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110
[2020-10-27 04:07:43,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:07:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-10-27 04:07:43,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:43,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:43,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:43,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:43,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:07:43,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:43,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53
[2020-10-27 04:07:43,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:43,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:07:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:07:43,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:43,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:43,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:43,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:43,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:07:43,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:43,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55
[2020-10-27 04:07:43,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:07:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-27 04:07:43,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:43,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:43,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:43,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:43,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:43,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:43,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41
[2020-10-27 04:07:43,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:07:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:43,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:07:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:43,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:43,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:43,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:43,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:43,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:43,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-10-27 04:07:43,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:07:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:07:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:43,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:43,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:43,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:43,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:43,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-27 04:07:43,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:43,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:43,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:43,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:43,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:43,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:43,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-27 04:07:43,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:43,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:43,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:43,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:43,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:07:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 27 proven. 223 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked.
[2020-10-27 04:07:43,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903141206]
[2020-10-27 04:07:43,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:43,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18
[2020-10-27 04:07:43,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058657242]
[2020-10-27 04:07:43,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-27 04:07:43,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:43,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-27 04:07:43,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306
[2020-10-27 04:07:43,859 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 18 states.
[2020-10-27 04:07:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:44,657 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions.
[2020-10-27 04:07:44,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-10-27 04:07:44,658 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 81
[2020-10-27 04:07:44,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:44,660 INFO L225 Difference]: With dead ends: 58
[2020-10-27 04:07:44,660 INFO L226 Difference]: Without dead ends: 53
[2020-10-27 04:07:44,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=325, Invalid=667, Unknown=0, NotChecked=0, Total=992
[2020-10-27 04:07:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2020-10-27 04:07:44,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53.
[2020-10-27 04:07:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2020-10-27 04:07:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions.
[2020-10-27 04:07:44,670 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 81
[2020-10-27 04:07:44,670 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:44,670 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions.
[2020-10-27 04:07:44,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-27 04:07:44,670 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions.
[2020-10-27 04:07:44,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88
[2020-10-27 04:07:44,671 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:44,671 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:44,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2020-10-27 04:07:44,672 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:44,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1532398651, now seen corresponding path program 12 times
[2020-10-27 04:07:44,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:44,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113588476]
[2020-10-27 04:07:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:44,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:44,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:48,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:48,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121
[2020-10-27 04:07:48,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:48,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4296
[2020-10-27 04:07:48,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:48,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28
[2020-10-27 04:07:48,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:48,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66
[2020-10-27 04:07:48,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:49,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:49,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:49,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:49,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:49,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:49,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:07:49,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:49,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:49,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:49,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:49,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:49,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105
[2020-10-27 04:07:49,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:49,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218
[2020-10-27 04:07:49,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28
[2020-10-27 04:07:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102
[2020-10-27 04:07:49,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:49,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:49,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:49,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97
[2020-10-27 04:07:49,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:49,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197
[2020-10-27 04:07:49,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:49,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-10-27 04:07:49,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:49,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95
[2020-10-27 04:07:49,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:49,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:49,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:49,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-10-27 04:07:49,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162
[2020-10-27 04:07:49,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25
[2020-10-27 04:07:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:49,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87
[2020-10-27 04:07:49,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:49,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:49,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:49,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:49,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81
[2020-10-27 04:07:49,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:49,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132
[2020-10-27 04:07:49,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-10-27 04:07:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:49,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79
[2020-10-27 04:07:49,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:49,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:50,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:50,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-10-27 04:07:50,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:50,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106
[2020-10-27 04:07:50,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:50,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21
[2020-10-27 04:07:50,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:50,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-10-27 04:07:50,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:50,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:50,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:50,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:50,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65
[2020-10-27 04:07:50,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:50,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100
[2020-10-27 04:07:50,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-10-27 04:07:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63
[2020-10-27 04:07:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:50,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:50,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:50,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:50,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 04:07:50,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68
[2020-10-27 04:07:50,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:07:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-10-27 04:07:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:50,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:50,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:50,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:50,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:07:50,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50
[2020-10-27 04:07:50,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:07:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:50,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:07:50,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:50,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:50,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:50,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:50,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:07:50,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:50,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-10-27 04:07:50,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:50,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:07:50,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:50,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-27 04:07:50,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:50,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:50,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:50,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:50,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:50,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:50,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-27 04:07:50,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:07:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:07:50,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:50,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:50,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:50,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:50,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-27 04:07:50,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:07:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:50,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:07:50,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:50,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:50,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:50,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-27 04:07:50,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:50,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:50,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:50,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:50,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:50,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:50,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 04:07:50,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:50,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:50,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:50,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:50,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 28 proven. 251 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked.
[2020-10-27 04:07:50,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113588476]
[2020-10-27 04:07:50,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:50,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19
[2020-10-27 04:07:50,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758878550]
[2020-10-27 04:07:50,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-10-27 04:07:50,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:50,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-10-27 04:07:50,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342
[2020-10-27 04:07:50,621 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 19 states.
[2020-10-27 04:07:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:51,483 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions.
[2020-10-27 04:07:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-10-27 04:07:51,484 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 87
[2020-10-27 04:07:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:51,485 INFO L225 Difference]: With dead ends: 61
[2020-10-27 04:07:51,485 INFO L226 Difference]: Without dead ends: 56
[2020-10-27 04:07:51,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=370, Invalid=752, Unknown=0, NotChecked=0, Total=1122
[2020-10-27 04:07:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2020-10-27 04:07:51,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2020-10-27 04:07:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2020-10-27 04:07:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions.
[2020-10-27 04:07:51,495 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 87
[2020-10-27 04:07:51,495 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:51,495 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions.
[2020-10-27 04:07:51,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-10-27 04:07:51,496 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions.
[2020-10-27 04:07:51,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2020-10-27 04:07:51,497 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:51,497 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:51,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2020-10-27 04:07:51,497 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:51,498 INFO L82 PathProgramCache]: Analyzing trace with hash -913821041, now seen corresponding path program 13 times
[2020-10-27 04:07:51,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:51,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372703506]
[2020-10-27 04:07:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:51,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:56,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:56,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129
[2020-10-27 04:07:56,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:07:56,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002
[2020-10-27 04:07:56,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30
[2020-10-27 04:07:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:07:56,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-10-27 04:07:56,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:56,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:07:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:56,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:56,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:07:56,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:07:56,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:07:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:07:56,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:56,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:07:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:56,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:56,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113
[2020-10-27 04:07:56,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:56,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338
[2020-10-27 04:07:56,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30
[2020-10-27 04:07:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:07:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110
[2020-10-27 04:07:56,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:56,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:56,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:57,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:57,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105
[2020-10-27 04:07:57,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:57,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265
[2020-10-27 04:07:57,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29
[2020-10-27 04:07:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103
[2020-10-27 04:07:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:57,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:57,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:57,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:57,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97
[2020-10-27 04:07:57,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:57,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205
[2020-10-27 04:07:57,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-10-27 04:07:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95
[2020-10-27 04:07:57,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:57,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:57,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:57,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:57,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-10-27 04:07:57,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:57,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150
[2020-10-27 04:07:57,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25
[2020-10-27 04:07:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87
[2020-10-27 04:07:57,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:57,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:57,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:57,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:57,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81
[2020-10-27 04:07:57,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:57,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122
[2020-10-27 04:07:57,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:57,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-10-27 04:07:57,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:57,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79
[2020-10-27 04:07:57,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:57,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:57,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:57,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:57,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-10-27 04:07:57,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:57,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159
[2020-10-27 04:07:57,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21
[2020-10-27 04:07:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-10-27 04:07:57,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:58,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:58,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:58,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65
[2020-10-27 04:07:58,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158
[2020-10-27 04:07:58,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-10-27 04:07:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63
[2020-10-27 04:07:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:58,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:58,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:58,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 04:07:58,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:58,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92
[2020-10-27 04:07:58,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:07:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-10-27 04:07:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:58,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:58,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:58,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:07:58,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42
[2020-10-27 04:07:58,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:07:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:07:58,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:58,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:58,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:58,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:07:58,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:58,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45
[2020-10-27 04:07:58,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:07:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-27 04:07:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:58,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:58,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:58,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:07:58,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29
[2020-10-27 04:07:58,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:07:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:07:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:58,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:58,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:58,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:07:58,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:58,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-27 04:07:58,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:07:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:07:58,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:58,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:58,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:58,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:58,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:07:58,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-27 04:07:58,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:07:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:07:58,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:07:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:58,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:58,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:07:58,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:07:58,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:07:58,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:07:58,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:07:58,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:07:58,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:07:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:07:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:07:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 38 proven. 298 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked.
[2020-10-27 04:07:58,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372703506]
[2020-10-27 04:07:58,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:07:58,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2020-10-27 04:07:58,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423865077]
[2020-10-27 04:07:58,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-27 04:07:58,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:07:58,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-27 04:07:58,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380
[2020-10-27 04:07:58,711 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 20 states.
[2020-10-27 04:07:59,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:07:59,617 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions.
[2020-10-27 04:07:59,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-10-27 04:07:59,618 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 93
[2020-10-27 04:07:59,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:07:59,620 INFO L225 Difference]: With dead ends: 64
[2020-10-27 04:07:59,620 INFO L226 Difference]: Without dead ends: 59
[2020-10-27 04:07:59,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=418, Invalid=842, Unknown=0, NotChecked=0, Total=1260
[2020-10-27 04:07:59,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2020-10-27 04:07:59,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59.
[2020-10-27 04:07:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states.
[2020-10-27 04:07:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions.
[2020-10-27 04:07:59,629 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 93
[2020-10-27 04:07:59,630 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:07:59,630 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions.
[2020-10-27 04:07:59,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-27 04:07:59,630 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions.
[2020-10-27 04:07:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2020-10-27 04:07:59,639 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:07:59,639 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:07:59,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2020-10-27 04:07:59,639 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:07:59,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:07:59,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1648421445, now seen corresponding path program 14 times
[2020-10-27 04:07:59,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:07:59,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326452579]
[2020-10-27 04:07:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:07:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:07:59,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:07:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:04,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:04,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137
[2020-10-27 04:08:04,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 04:08:04,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000
[2020-10-27 04:08:04,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32
[2020-10-27 04:08:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-10-27 04:08:04,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76
[2020-10-27 04:08:04,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:04,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 04:08:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:04,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:04,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:04,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 04:08:04,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:04,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:08:04,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:04,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 04:08:04,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:04,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 04:08:04,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:04,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-27 04:08:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:04,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:05,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:05,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121
[2020-10-27 04:08:05,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:05,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624
[2020-10-27 04:08:05,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32
[2020-10-27 04:08:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-10-27 04:08:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118
[2020-10-27 04:08:05,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:05,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:05,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:05,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113
[2020-10-27 04:08:05,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:05,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446
[2020-10-27 04:08:05,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:05,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31
[2020-10-27 04:08:05,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:05,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111
[2020-10-27 04:08:05,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:05,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:05,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:06,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:06,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105
[2020-10-27 04:08:06,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222
[2020-10-27 04:08:06,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29
[2020-10-27 04:08:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103
[2020-10-27 04:08:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:06,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:06,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:06,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97
[2020-10-27 04:08:06,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:06,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325
[2020-10-27 04:08:06,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27
[2020-10-27 04:08:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95
[2020-10-27 04:08:06,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:06,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:06,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:06,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89
[2020-10-27 04:08:06,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:06,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295
[2020-10-27 04:08:06,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:06,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25
[2020-10-27 04:08:06,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:06,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87
[2020-10-27 04:08:06,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:06,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:06,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:07,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:07,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81
[2020-10-27 04:08:07,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:07,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196
[2020-10-27 04:08:07,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23
[2020-10-27 04:08:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:07,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79
[2020-10-27 04:08:07,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:07,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:07,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:07,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:07,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-10-27 04:08:07,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95
[2020-10-27 04:08:07,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21
[2020-10-27 04:08:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-10-27 04:08:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:07,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:07,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:07,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:07,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65
[2020-10-27 04:08:07,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:07,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79
[2020-10-27 04:08:07,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-10-27 04:08:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63
[2020-10-27 04:08:07,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:07,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:07,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 04:08:07,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:07,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59
[2020-10-27 04:08:07,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-10-27 04:08:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-10-27 04:08:07,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:07,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:07,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:07,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:07,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-27 04:08:07,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44
[2020-10-27 04:08:07,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-10-27 04:08:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-27 04:08:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:07,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:07,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:07,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-27 04:08:07,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:07,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51
[2020-10-27 04:08:07,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-10-27 04:08:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-10-27 04:08:07,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:07,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:07,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:07,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:07,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-10-27 04:08:07,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:07,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35
[2020-10-27 04:08:07,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-10-27 04:08:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-10-27 04:08:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:08:07,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:07,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:07,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:07,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-10-27 04:08:07,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:07,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-10-27 04:08:07,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:07,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-10-27 04:08:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:07,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-27 04:08:07,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:08:07,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:07,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:07,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-10-27 04:08:07,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:07,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-27 04:08:07,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-10-27 04:08:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:07,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-27 04:08:07,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 04:08:07,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-10-27 04:08:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 04:08:07,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 04:08:07,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 04:08:07,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 04:08:07,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 04:08:07,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 04:08:07,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST
[2020-10-27 04:08:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 04:08:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 04:08:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-27 04:08:07,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 04:08:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 40 proven. 363 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked.
[2020-10-27 04:08:07,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326452579]
[2020-10-27 04:08:07,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 04:08:07,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21
[2020-10-27 04:08:07,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010243448]
[2020-10-27 04:08:07,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states
[2020-10-27 04:08:07,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 04:08:07,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2020-10-27 04:08:07,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=275, Unknown=0, NotChecked=0, Total=420
[2020-10-27 04:08:07,843 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 21 states.
[2020-10-27 04:08:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 04:08:08,747 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions.
[2020-10-27 04:08:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2020-10-27 04:08:08,748 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 99
[2020-10-27 04:08:08,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 04:08:08,749 INFO L225 Difference]: With dead ends: 67
[2020-10-27 04:08:08,750 INFO L226 Difference]: Without dead ends: 62
[2020-10-27 04:08:08,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=469, Invalid=937, Unknown=0, NotChecked=0, Total=1406
[2020-10-27 04:08:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2020-10-27 04:08:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62.
[2020-10-27 04:08:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2020-10-27 04:08:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions.
[2020-10-27 04:08:08,769 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 99
[2020-10-27 04:08:08,769 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-27 04:08:08,769 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions.
[2020-10-27 04:08:08,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2020-10-27 04:08:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions.
[2020-10-27 04:08:08,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2020-10-27 04:08:08,772 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-27 04:08:08,775 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 04:08:08,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2020-10-27 04:08:08,775 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 04:08:08,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 04:08:08,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1745019279, now seen corresponding path program 15 times
[2020-10-27 04:08:08,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 04:08:08,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992794432]
[2020-10-27 04:08:08,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 04:08:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-27 04:08:08,800 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-10-27 04:08:08,803 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-10-27 04:08:08,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2020-10-27 04:08:08,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:08:08 BoogieIcfgContainer
[2020-10-27 04:08:08,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-27 04:08:08,855 INFO L168 Benchmark]: Toolchain (without parser) took 62694.11 ms. Allocated memory was 163.6 MB in the beginning and 659.6 MB in the end (delta: 496.0 MB). Free memory was 144.5 MB in the beginning and 420.4 MB in the end (delta: -275.9 MB). Peak memory consumption was 219.8 MB. Max. memory is 8.0 GB.
[2020-10-27 04:08:08,857 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 163.6 MB. Free memory was 134.6 MB in the beginning and 134.5 MB in the end (delta: 76.5 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-27 04:08:08,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.47 ms. Allocated memory is still 163.6 MB. Free memory was 143.9 MB in the beginning and 135.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-10-27 04:08:08,863 INFO L168 Benchmark]: Boogie Preprocessor took 35.85 ms. Allocated memory is still 163.6 MB. Free memory was 135.0 MB in the beginning and 133.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2020-10-27 04:08:08,869 INFO L168 Benchmark]: RCFGBuilder took 475.99 ms. Allocated memory is still 163.6 MB. Free memory was 133.6 MB in the beginning and 135.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
[2020-10-27 04:08:08,869 INFO L168 Benchmark]: TraceAbstraction took 61923.39 ms. Allocated memory was 163.6 MB in the beginning and 659.6 MB in the end (delta: 496.0 MB). Free memory was 134.5 MB in the beginning and 420.4 MB in the end (delta: -285.9 MB). Peak memory consumption was 211.4 MB. Max. memory is 8.0 GB.
[2020-10-27 04:08:08,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.15 ms. Allocated memory is still 163.6 MB. Free memory was 134.6 MB in the beginning and 134.5 MB in the end (delta: 76.5 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 246.47 ms. Allocated memory is still 163.6 MB. Free memory was 143.9 MB in the beginning and 135.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 35.85 ms. Allocated memory is still 163.6 MB. Free memory was 135.0 MB in the beginning and 133.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 475.99 ms. Allocated memory is still 163.6 MB. Free memory was 133.6 MB in the beginning and 135.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 61923.39 ms. Allocated memory was 163.6 MB in the beginning and 659.6 MB in the end (delta: 496.0 MB). Free memory was 134.5 MB in the beginning and 420.4 MB in the end (delta: -285.9 MB). Peak memory consumption was 211.4 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L12] int input = 15;
[L13] CALL, EXPR id(input)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND FALSE !(x==0)
[L8] CALL, EXPR id(x-1)
[L7] COND TRUE x==0
[L7] return 0;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L8] RET, EXPR id(x-1)
[L8] return id(x-1) + 1;
[L13] RET, EXPR id(input)
[L13] int result = id(input);
[L14] COND TRUE result == 15
[L15] CALL reach_error()
[L4] __assert_fail("0", "id_i15_o15-2.c", 4, "reach_error")
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 61.7s, OverallIterations: 16, TraceHistogramMax: 16, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 214 SDtfs, 792 SDslu, 437 SDs, 0 SdLazy, 1162 SolverSat, 457 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 585 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 52.1s InterpolantComputationTime, 960 NumberOfCodeBlocks, 960 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 840 ConstructedInterpolants, 0 QuantifiedInterpolants, 166496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 1309/3150 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...