/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 21:36:19,152 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 21:36:19,156 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 21:36:19,201 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 21:36:19,202 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 21:36:19,210 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 21:36:19,213 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 21:36:19,225 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 21:36:19,228 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 21:36:19,231 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 21:36:19,233 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 21:36:19,235 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 21:36:19,237 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 21:36:19,238 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 21:36:19,247 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 21:36:19,249 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 21:36:19,251 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 21:36:19,252 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 21:36:19,253 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 21:36:19,265 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 21:36:19,266 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 21:36:19,270 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 21:36:19,271 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 21:36:19,272 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2020-09-24 21:36:19,276 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-09-24 21:36:19,282 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 21:36:19,283 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 21:36:19,284 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-09-24 21:36:19,285 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 21:36:19,288 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 21:36:19,289 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 21:36:19,331 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 21:36:19,331 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 21:36:19,334 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 21:36:19,334 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 21:36:19,334 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 21:36:19,334 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 21:36:19,335 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 21:36:19,335 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 21:36:19,335 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 21:36:19,335 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 21:36:19,337 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 21:36:19,337 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 21:36:19,337 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 21:36:19,337 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 21:36:19,338 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 21:36:19,338 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 21:36:19,338 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 21:36:19,338 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 21:36:19,339 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 21:36:19,339 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 21:36:19,339 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 21:36:19,339 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:36:19,339 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 21:36:19,340 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 21:36:19,340 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 21:36:19,340 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 21:36:19,340 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 21:36:19,340 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 21:36:19,340 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 21:36:19,341 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true;
[2020-09-24 21:36:19,783 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 21:36:19,804 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 21:36:19,810 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 21:36:19,813 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 21:36:19,814 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 21:36:19,815 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c
[2020-09-24 21:36:19,904 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f407fd272/681ff2f8368a444bbed1d3cf5fe9a7f2/FLAGd14ada980
[2020-09-24 21:36:20,442 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 21:36:20,443 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c
[2020-09-24 21:36:20,456 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f407fd272/681ff2f8368a444bbed1d3cf5fe9a7f2/FLAGd14ada980
[2020-09-24 21:36:20,831 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f407fd272/681ff2f8368a444bbed1d3cf5fe9a7f2
[2020-09-24 21:36:20,847 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 21:36:20,855 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 21:36:20,856 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 21:36:20,856 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 21:36:20,860 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 21:36:20,862 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:36:20" (1/1) ...
[2020-09-24 21:36:20,866 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54535c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:20, skipping insertion in model container
[2020-09-24 21:36:20,866 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:36:20" (1/1) ...
[2020-09-24 21:36:20,875 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 21:36:20,903 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 21:36:21,143 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:36:21,149 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 21:36:21,174 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:36:21,193 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 21:36:21,193 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:21 WrapperNode
[2020-09-24 21:36:21,193 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 21:36:21,194 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 21:36:21,195 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 21:36:21,195 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 21:36:21,213 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:21" (1/1) ...
[2020-09-24 21:36:21,213 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:21" (1/1) ...
[2020-09-24 21:36:21,301 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:21" (1/1) ...
[2020-09-24 21:36:21,301 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:21" (1/1) ...
[2020-09-24 21:36:21,306 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:21" (1/1) ...
[2020-09-24 21:36:21,314 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:21" (1/1) ...
[2020-09-24 21:36:21,315 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:21" (1/1) ...
[2020-09-24 21:36:21,318 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 21:36:21,318 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 21:36:21,318 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 21:36:21,318 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 21:36:21,320 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:21" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:36:21,403 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 21:36:21,403 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 21:36:21,403 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 21:36:21,404 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 21:36:21,404 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 21:36:21,404 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 21:36:21,405 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 21:36:21,405 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 21:36:21,771 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 21:36:21,772 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 21:36:21,777 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:36:21 BoogieIcfgContainer
[2020-09-24 21:36:21,777 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 21:36:21,778 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 21:36:21,779 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 21:36:21,782 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 21:36:21,783 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:36:20" (1/3) ...
[2020-09-24 21:36:21,784 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5f35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:36:21, skipping insertion in model container
[2020-09-24 21:36:21,784 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:36:21" (2/3) ...
[2020-09-24 21:36:21,785 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5f35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:36:21, skipping insertion in model container
[2020-09-24 21:36:21,785 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:36:21" (3/3) ...
[2020-09-24 21:36:21,787 INFO  L109   eAbstractionObserver]: Analyzing ICFG test_locks_5.c
[2020-09-24 21:36:21,800 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 21:36:21,811 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 21:36:21,834 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 21:36:21,867 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 21:36:21,868 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 21:36:21,868 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 21:36:21,868 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 21:36:21,868 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 21:36:21,868 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 21:36:21,869 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 21:36:21,869 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 21:36:21,893 INFO  L276                IsEmpty]: Start isEmpty. Operand 68 states.
[2020-09-24 21:36:21,901 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-09-24 21:36:21,901 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:36:21,902 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:36:21,903 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:36:21,910 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:36:21,911 INFO  L82        PathProgramCache]: Analyzing trace with hash -1222569836, now seen corresponding path program 1 times
[2020-09-24 21:36:21,920 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:36:21,921 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988740411]
[2020-09-24 21:36:21,921 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:36:22,070 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:22,108 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:22,237 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:22,237 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 50
[2020-09-24 21:36:22,238 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:22,238 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 160
[2020-09-24 21:36:22,240 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:22,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:36:22,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 42
[2020-09-24 21:36:22,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 21:36:22,241 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 21:36:22,326 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:36:22,328 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:22,330 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:22,332 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:22,333 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:36:22,333 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:22,333 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:36:22,333 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:22,334 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:36:22,334 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:36:22,334 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:36:22,335 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:36:22,347 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:36:22,349 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988740411]
[2020-09-24 21:36:22,351 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:36:22,352 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 21:36:22,353 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27927851]
[2020-09-24 21:36:22,360 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 21:36:22,360 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:36:22,378 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 21:36:22,380 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:22,382 INFO  L87              Difference]: Start difference. First operand 68 states. Second operand 3 states.
[2020-09-24 21:36:22,466 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:36:22,466 INFO  L93              Difference]: Finished difference Result 147 states and 198 transitions.
[2020-09-24 21:36:22,467 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 21:36:22,469 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 43
[2020-09-24 21:36:22,470 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:36:22,483 INFO  L225             Difference]: With dead ends: 147
[2020-09-24 21:36:22,483 INFO  L226             Difference]: Without dead ends: 96
[2020-09-24 21:36:22,488 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:22,510 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2020-09-24 21:36:22,541 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94.
[2020-09-24 21:36:22,543 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 94 states.
[2020-09-24 21:36:22,546 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions.
[2020-09-24 21:36:22,548 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 43
[2020-09-24 21:36:22,549 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:36:22,549 INFO  L479      AbstractCegarLoop]: Abstraction has 94 states and 120 transitions.
[2020-09-24 21:36:22,549 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 21:36:22,550 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions.
[2020-09-24 21:36:22,551 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-09-24 21:36:22,552 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:36:22,552 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:36:22,552 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 21:36:22,553 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:36:22,553 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:36:22,553 INFO  L82        PathProgramCache]: Analyzing trace with hash 1252462105, now seen corresponding path program 1 times
[2020-09-24 21:36:22,554 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:36:22,554 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810522668]
[2020-09-24 21:36:22,554 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:36:22,572 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:22,586 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:22,680 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:22,681 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 51
[2020-09-24 21:36:22,681 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:22,681 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 107
[2020-09-24 21:36:22,685 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:22,685 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:36:22,685 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 43
[2020-09-24 21:36:22,686 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:36:22,686 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:36:22,735 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:36:22,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:22,739 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:22,740 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:22,741 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:36:22,741 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:22,741 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:36:22,742 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:22,742 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:36:22,742 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:36:22,742 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:36:22,743 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:36:22,747 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:36:22,748 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810522668]
[2020-09-24 21:36:22,748 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:36:22,748 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 21:36:22,749 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404788149]
[2020-09-24 21:36:22,751 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 21:36:22,751 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:36:22,752 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 21:36:22,752 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:22,752 INFO  L87              Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 3 states.
[2020-09-24 21:36:22,775 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:36:22,776 INFO  L93              Difference]: Finished difference Result 116 states and 148 transitions.
[2020-09-24 21:36:22,776 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 21:36:22,777 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 44
[2020-09-24 21:36:22,777 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:36:22,779 INFO  L225             Difference]: With dead ends: 116
[2020-09-24 21:36:22,779 INFO  L226             Difference]: Without dead ends: 114
[2020-09-24 21:36:22,781 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:22,782 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 114 states.
[2020-09-24 21:36:22,790 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 94.
[2020-09-24 21:36:22,791 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 94 states.
[2020-09-24 21:36:22,793 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions.
[2020-09-24 21:36:22,793 INFO  L78                 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 44
[2020-09-24 21:36:22,794 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:36:22,794 INFO  L479      AbstractCegarLoop]: Abstraction has 94 states and 119 transitions.
[2020-09-24 21:36:22,794 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 21:36:22,795 INFO  L276                IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions.
[2020-09-24 21:36:22,796 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-09-24 21:36:22,796 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:36:22,797 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:36:22,797 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 21:36:22,797 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:36:22,797 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:36:22,798 INFO  L82        PathProgramCache]: Analyzing trace with hash 755286414, now seen corresponding path program 1 times
[2020-09-24 21:36:22,798 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:36:22,798 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332655720]
[2020-09-24 21:36:22,799 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:36:22,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:22,822 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:22,869 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:22,869 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 51
[2020-09-24 21:36:22,870 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:22,870 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 57
[2020-09-24 21:36:22,870 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:22,871 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:36:22,871 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 43
[2020-09-24 21:36:22,871 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 21:36:22,871 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:36:22,891 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:36:22,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:22,894 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:22,895 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:22,895 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:36:22,896 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:22,896 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:36:22,896 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:22,897 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:36:22,897 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:36:22,897 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:36:22,898 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:36:22,905 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:36:22,906 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332655720]
[2020-09-24 21:36:22,906 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:36:22,907 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 21:36:22,908 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932651261]
[2020-09-24 21:36:22,908 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 21:36:22,908 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:36:22,909 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 21:36:22,910 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:22,910 INFO  L87              Difference]: Start difference. First operand 94 states and 119 transitions. Second operand 3 states.
[2020-09-24 21:36:22,961 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:36:22,961 INFO  L93              Difference]: Finished difference Result 226 states and 299 transitions.
[2020-09-24 21:36:22,961 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 21:36:22,962 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 44
[2020-09-24 21:36:22,962 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:36:22,964 INFO  L225             Difference]: With dead ends: 226
[2020-09-24 21:36:22,965 INFO  L226             Difference]: Without dead ends: 157
[2020-09-24 21:36:22,966 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:22,967 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 157 states.
[2020-09-24 21:36:22,979 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155.
[2020-09-24 21:36:22,979 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 155 states.
[2020-09-24 21:36:22,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 200 transitions.
[2020-09-24 21:36:22,983 INFO  L78                 Accepts]: Start accepts. Automaton has 155 states and 200 transitions. Word has length 44
[2020-09-24 21:36:22,984 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:36:22,984 INFO  L479      AbstractCegarLoop]: Abstraction has 155 states and 200 transitions.
[2020-09-24 21:36:22,984 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 21:36:22,984 INFO  L276                IsEmpty]: Start isEmpty. Operand 155 states and 200 transitions.
[2020-09-24 21:36:22,986 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-09-24 21:36:22,986 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:36:22,986 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:36:22,987 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 21:36:22,987 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:36:22,987 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:36:22,987 INFO  L82        PathProgramCache]: Analyzing trace with hash -1863120818, now seen corresponding path program 1 times
[2020-09-24 21:36:22,988 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:36:22,988 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121162637]
[2020-09-24 21:36:22,988 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:36:23,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,009 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,072 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,073 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 52
[2020-09-24 21:36:23,073 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,073 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 71
[2020-09-24 21:36:23,073 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:36:23,074 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 44
[2020-09-24 21:36:23,074 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:36:23,074 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:36:23,095 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:36:23,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,097 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,098 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,099 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:36:23,099 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,099 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:36:23,099 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,100 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:36:23,100 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:36:23,100 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:36:23,100 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:36:23,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:36:23,105 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121162637]
[2020-09-24 21:36:23,105 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:36:23,105 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 21:36:23,106 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133397403]
[2020-09-24 21:36:23,106 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 21:36:23,106 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:36:23,107 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 21:36:23,107 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:23,107 INFO  L87              Difference]: Start difference. First operand 155 states and 200 transitions. Second operand 3 states.
[2020-09-24 21:36:23,141 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:36:23,142 INFO  L93              Difference]: Finished difference Result 191 states and 246 transitions.
[2020-09-24 21:36:23,142 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 21:36:23,143 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 45
[2020-09-24 21:36:23,143 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:36:23,145 INFO  L225             Difference]: With dead ends: 191
[2020-09-24 21:36:23,145 INFO  L226             Difference]: Without dead ends: 189
[2020-09-24 21:36:23,146 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:23,147 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 189 states.
[2020-09-24 21:36:23,164 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 155.
[2020-09-24 21:36:23,164 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 155 states.
[2020-09-24 21:36:23,173 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 198 transitions.
[2020-09-24 21:36:23,173 INFO  L78                 Accepts]: Start accepts. Automaton has 155 states and 198 transitions. Word has length 45
[2020-09-24 21:36:23,174 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:36:23,174 INFO  L479      AbstractCegarLoop]: Abstraction has 155 states and 198 transitions.
[2020-09-24 21:36:23,174 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 21:36:23,174 INFO  L276                IsEmpty]: Start isEmpty. Operand 155 states and 198 transitions.
[2020-09-24 21:36:23,175 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-09-24 21:36:23,175 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:36:23,176 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:36:23,176 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 21:36:23,176 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:36:23,180 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:36:23,180 INFO  L82        PathProgramCache]: Analyzing trace with hash 1939288392, now seen corresponding path program 1 times
[2020-09-24 21:36:23,180 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:36:23,181 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191184213]
[2020-09-24 21:36:23,181 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:36:23,199 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,209 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,266 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,267 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 52
[2020-09-24 21:36:23,267 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,267 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 64
[2020-09-24 21:36:23,267 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,268 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:36:23,268 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 44
[2020-09-24 21:36:23,268 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 21:36:23,268 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:36:23,306 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:36:23,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,309 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,311 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,311 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:36:23,311 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,311 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 21:36:23,312 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,312 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:36:23,312 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:36:23,312 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:36:23,313 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:36:23,316 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:36:23,317 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191184213]
[2020-09-24 21:36:23,318 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:36:23,318 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 21:36:23,318 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454347855]
[2020-09-24 21:36:23,319 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 21:36:23,319 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:36:23,319 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 21:36:23,320 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:23,320 INFO  L87              Difference]: Start difference. First operand 155 states and 198 transitions. Second operand 3 states.
[2020-09-24 21:36:23,351 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:36:23,351 INFO  L93              Difference]: Finished difference Result 403 states and 528 transitions.
[2020-09-24 21:36:23,351 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 21:36:23,352 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 45
[2020-09-24 21:36:23,352 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:36:23,355 INFO  L225             Difference]: With dead ends: 403
[2020-09-24 21:36:23,356 INFO  L226             Difference]: Without dead ends: 273
[2020-09-24 21:36:23,357 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:23,358 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 273 states.
[2020-09-24 21:36:23,396 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271.
[2020-09-24 21:36:23,400 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 271 states.
[2020-09-24 21:36:23,403 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 346 transitions.
[2020-09-24 21:36:23,404 INFO  L78                 Accepts]: Start accepts. Automaton has 271 states and 346 transitions. Word has length 45
[2020-09-24 21:36:23,404 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:36:23,404 INFO  L479      AbstractCegarLoop]: Abstraction has 271 states and 346 transitions.
[2020-09-24 21:36:23,404 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 21:36:23,408 INFO  L276                IsEmpty]: Start isEmpty. Operand 271 states and 346 transitions.
[2020-09-24 21:36:23,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-09-24 21:36:23,412 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:36:23,412 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:36:23,413 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 21:36:23,413 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:36:23,413 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:36:23,414 INFO  L82        PathProgramCache]: Analyzing trace with hash -11355582, now seen corresponding path program 1 times
[2020-09-24 21:36:23,414 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:36:23,414 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304012996]
[2020-09-24 21:36:23,415 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:36:23,433 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,447 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,484 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,485 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 53
[2020-09-24 21:36:23,485 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,485 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 49
[2020-09-24 21:36:23,486 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,486 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:36:23,486 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 45
[2020-09-24 21:36:23,486 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 21:36:23,487 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:36:23,508 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:36:23,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,510 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,511 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,512 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:36:23,512 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,512 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:36:23,512 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,513 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:36:23,513 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:36:23,513 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:36:23,514 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:36:23,518 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:36:23,518 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304012996]
[2020-09-24 21:36:23,518 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:36:23,519 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 21:36:23,519 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714980025]
[2020-09-24 21:36:23,519 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 21:36:23,520 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:36:23,520 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 21:36:23,520 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:23,520 INFO  L87              Difference]: Start difference. First operand 271 states and 346 transitions. Second operand 3 states.
[2020-09-24 21:36:23,544 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:36:23,545 INFO  L93              Difference]: Finished difference Result 739 states and 956 transitions.
[2020-09-24 21:36:23,545 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 21:36:23,545 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 46
[2020-09-24 21:36:23,546 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:36:23,548 INFO  L225             Difference]: With dead ends: 739
[2020-09-24 21:36:23,549 INFO  L226             Difference]: Without dead ends: 493
[2020-09-24 21:36:23,550 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:23,552 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 493 states.
[2020-09-24 21:36:23,567 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491.
[2020-09-24 21:36:23,568 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 491 states.
[2020-09-24 21:36:23,572 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 618 transitions.
[2020-09-24 21:36:23,572 INFO  L78                 Accepts]: Start accepts. Automaton has 491 states and 618 transitions. Word has length 46
[2020-09-24 21:36:23,573 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:36:23,573 INFO  L479      AbstractCegarLoop]: Abstraction has 491 states and 618 transitions.
[2020-09-24 21:36:23,573 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 21:36:23,573 INFO  L276                IsEmpty]: Start isEmpty. Operand 491 states and 618 transitions.
[2020-09-24 21:36:23,575 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-09-24 21:36:23,576 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:36:23,576 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:36:23,576 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 21:36:23,576 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:36:23,577 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:36:23,577 INFO  L82        PathProgramCache]: Analyzing trace with hash 338056749, now seen corresponding path program 1 times
[2020-09-24 21:36:23,577 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:36:23,577 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771597065]
[2020-09-24 21:36:23,578 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:36:23,586 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,594 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,628 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,628 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 53
[2020-09-24 21:36:23,628 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,628 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-09-24 21:36:23,629 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,629 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:36:23,629 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 45
[2020-09-24 21:36:23,629 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:36:23,629 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:36:23,649 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:36:23,650 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,652 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,653 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,653 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:36:23,653 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,654 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:36:23,655 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:36:23,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:36:23,655 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:36:23,656 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:36:23,659 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:36:23,660 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771597065]
[2020-09-24 21:36:23,660 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:36:23,660 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 21:36:23,661 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769237097]
[2020-09-24 21:36:23,662 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 21:36:23,662 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:36:23,662 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 21:36:23,663 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:23,663 INFO  L87              Difference]: Start difference. First operand 491 states and 618 transitions. Second operand 3 states.
[2020-09-24 21:36:23,696 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:36:23,696 INFO  L93              Difference]: Finished difference Result 599 states and 748 transitions.
[2020-09-24 21:36:23,697 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 21:36:23,697 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 46
[2020-09-24 21:36:23,697 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:36:23,700 INFO  L225             Difference]: With dead ends: 599
[2020-09-24 21:36:23,701 INFO  L226             Difference]: Without dead ends: 597
[2020-09-24 21:36:23,701 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:23,702 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 597 states.
[2020-09-24 21:36:23,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 491.
[2020-09-24 21:36:23,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 491 states.
[2020-09-24 21:36:23,720 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 610 transitions.
[2020-09-24 21:36:23,720 INFO  L78                 Accepts]: Start accepts. Automaton has 491 states and 610 transitions. Word has length 46
[2020-09-24 21:36:23,720 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:36:23,720 INFO  L479      AbstractCegarLoop]: Abstraction has 491 states and 610 transitions.
[2020-09-24 21:36:23,721 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 21:36:23,721 INFO  L276                IsEmpty]: Start isEmpty. Operand 491 states and 610 transitions.
[2020-09-24 21:36:23,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-09-24 21:36:23,723 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:36:23,723 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:36:23,724 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-24 21:36:23,724 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:36:23,724 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:36:23,724 INFO  L82        PathProgramCache]: Analyzing trace with hash -144915038, now seen corresponding path program 1 times
[2020-09-24 21:36:23,725 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:36:23,725 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802699890]
[2020-09-24 21:36:23,725 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:36:23,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,740 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,771 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,772 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 54
[2020-09-24 21:36:23,772 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,772 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-09-24 21:36:23,772 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,772 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:36:23,772 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 46
[2020-09-24 21:36:23,773 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:36:23,773 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:36:23,791 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:36:23,792 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,793 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,794 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,794 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:36:23,795 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,795 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:36:23,795 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,795 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:36:23,795 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:36:23,796 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:36:23,796 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:36:23,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:36:23,799 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802699890]
[2020-09-24 21:36:23,800 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:36:23,800 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 21:36:23,800 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571023725]
[2020-09-24 21:36:23,801 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 21:36:23,801 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:36:23,801 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 21:36:23,801 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:23,801 INFO  L87              Difference]: Start difference. First operand 491 states and 610 transitions. Second operand 3 states.
[2020-09-24 21:36:23,836 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:36:23,836 INFO  L93              Difference]: Finished difference Result 591 states and 724 transitions.
[2020-09-24 21:36:23,837 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 21:36:23,837 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 47
[2020-09-24 21:36:23,838 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:36:23,841 INFO  L225             Difference]: With dead ends: 591
[2020-09-24 21:36:23,841 INFO  L226             Difference]: Without dead ends: 589
[2020-09-24 21:36:23,842 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:23,843 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 589 states.
[2020-09-24 21:36:23,863 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 491.
[2020-09-24 21:36:23,864 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 491 states.
[2020-09-24 21:36:23,866 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 602 transitions.
[2020-09-24 21:36:23,866 INFO  L78                 Accepts]: Start accepts. Automaton has 491 states and 602 transitions. Word has length 47
[2020-09-24 21:36:23,867 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:36:23,867 INFO  L479      AbstractCegarLoop]: Abstraction has 491 states and 602 transitions.
[2020-09-24 21:36:23,867 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 21:36:23,867 INFO  L276                IsEmpty]: Start isEmpty. Operand 491 states and 602 transitions.
[2020-09-24 21:36:23,870 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-09-24 21:36:23,871 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:36:23,871 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:36:23,871 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-24 21:36:23,872 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:36:23,872 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:36:23,872 INFO  L82        PathProgramCache]: Analyzing trace with hash -351776260, now seen corresponding path program 1 times
[2020-09-24 21:36:23,873 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:36:23,873 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090140493]
[2020-09-24 21:36:23,873 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:36:23,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,901 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,942 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,942 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 54
[2020-09-24 21:36:23,942 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,949 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 47
[2020-09-24 21:36:23,949 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,949 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:36:23,950 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 46
[2020-09-24 21:36:23,952 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 21:36:23,952 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 21:36:23,970 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:36:23,971 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:23,972 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:23,973 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:23,973 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:36:23,974 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:23,974 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 21:36:23,975 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:23,975 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:36:23,975 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:36:23,975 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:36:23,975 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:36:23,980 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:36:23,985 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090140493]
[2020-09-24 21:36:23,986 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:36:23,986 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 21:36:23,986 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10360088]
[2020-09-24 21:36:23,988 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 21:36:23,988 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:36:23,988 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 21:36:23,988 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:23,989 INFO  L87              Difference]: Start difference. First operand 491 states and 602 transitions. Second operand 3 states.
[2020-09-24 21:36:24,021 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:36:24,022 INFO  L93              Difference]: Finished difference Result 1373 states and 1691 transitions.
[2020-09-24 21:36:24,022 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 21:36:24,022 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 47
[2020-09-24 21:36:24,023 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:36:24,026 INFO  L225             Difference]: With dead ends: 1373
[2020-09-24 21:36:24,026 INFO  L226             Difference]: Without dead ends: 491
[2020-09-24 21:36:24,028 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:24,029 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 491 states.
[2020-09-24 21:36:24,042 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491.
[2020-09-24 21:36:24,043 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 491 states.
[2020-09-24 21:36:24,045 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 570 transitions.
[2020-09-24 21:36:24,045 INFO  L78                 Accepts]: Start accepts. Automaton has 491 states and 570 transitions. Word has length 47
[2020-09-24 21:36:24,046 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:36:24,046 INFO  L479      AbstractCegarLoop]: Abstraction has 491 states and 570 transitions.
[2020-09-24 21:36:24,046 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 21:36:24,046 INFO  L276                IsEmpty]: Start isEmpty. Operand 491 states and 570 transitions.
[2020-09-24 21:36:24,047 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-09-24 21:36:24,047 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:36:24,047 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:36:24,048 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-09-24 21:36:24,048 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:36:24,048 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:36:24,048 INFO  L82        PathProgramCache]: Analyzing trace with hash 2062829121, now seen corresponding path program 1 times
[2020-09-24 21:36:24,049 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:36:24,049 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843424156]
[2020-09-24 21:36:24,049 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:36:24,063 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:24,071 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:24,124 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:24,125 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 55
[2020-09-24 21:36:24,125 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:24,125 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 61
[2020-09-24 21:36:24,125 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:24,125 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 21:36:24,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 47
[2020-09-24 21:36:24,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:36:24,126 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:36:24,140 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:36:24,141 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:36:24,142 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:36:24,143 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:36:24,143 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:36:24,144 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:36:24,144 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 21:36:24,144 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:36:24,144 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:36:24,144 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:36:24,145 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:36:24,145 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 21:36:24,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:36:24,147 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843424156]
[2020-09-24 21:36:24,148 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:36:24,148 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 21:36:24,148 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829708149]
[2020-09-24 21:36:24,148 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 21:36:24,149 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:36:24,149 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 21:36:24,149 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:24,149 INFO  L87              Difference]: Start difference. First operand 491 states and 570 transitions. Second operand 3 states.
[2020-09-24 21:36:24,161 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:36:24,161 INFO  L93              Difference]: Finished difference Result 491 states and 570 transitions.
[2020-09-24 21:36:24,161 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 21:36:24,162 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 48
[2020-09-24 21:36:24,162 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:36:24,162 INFO  L225             Difference]: With dead ends: 491
[2020-09-24 21:36:24,162 INFO  L226             Difference]: Without dead ends: 0
[2020-09-24 21:36:24,163 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 21:36:24,164 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 21:36:24,164 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 21:36:24,164 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 21:36:24,164 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 21:36:24,164 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48
[2020-09-24 21:36:24,164 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:36:24,165 INFO  L479      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 21:36:24,165 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 21:36:24,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 21:36:24,165 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 21:36:24,165 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-09-24 21:36:24,168 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 21:36:24,193 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.initFINAL(line -1)  the Hoare annotation is:  true
[2020-09-24 21:36:24,194 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.initEXIT(line -1)  no Hoare annotation was computed.
[2020-09-24 21:36:24,194 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startEXIT(line -1)  no Hoare annotation was computed.
[2020-09-24 21:36:24,194 INFO  L271        CegarLoopResult]: At program point  L-1(line -1)  the Hoare annotation is:  true
[2020-09-24 21:36:24,194 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.startENTRY(line -1)  the Hoare annotation is:  true
[2020-09-24 21:36:24,194 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startFINAL(line -1)  no Hoare annotation was computed.
[2020-09-24 21:36:24,194 INFO  L268        CegarLoopResult]: For program point  mainEXIT(lines 4 93)  no Hoare annotation was computed.
[2020-09-24 21:36:24,195 INFO  L268        CegarLoopResult]: For program point  L85(line 85)  no Hoare annotation was computed.
[2020-09-24 21:36:24,195 INFO  L268        CegarLoopResult]: For program point  L19(line 19)  no Hoare annotation was computed.
[2020-09-24 21:36:24,195 INFO  L268        CegarLoopResult]: For program point  L69(line 69)  no Hoare annotation was computed.
[2020-09-24 21:36:24,195 INFO  L268        CegarLoopResult]: For program point  L53-1(lines 24 88)  no Hoare annotation was computed.
[2020-09-24 21:36:24,195 INFO  L268        CegarLoopResult]: For program point  L78-1(lines 24 88)  no Hoare annotation was computed.
[2020-09-24 21:36:24,195 INFO  L268        CegarLoopResult]: For program point  L12(line 12)  no Hoare annotation was computed.
[2020-09-24 21:36:24,195 INFO  L268        CegarLoopResult]: For program point  L45-1(lines 24 88)  no Hoare annotation was computed.
[2020-09-24 21:36:24,196 INFO  L268        CegarLoopResult]: For program point  L12-1(line 12)  no Hoare annotation was computed.
[2020-09-24 21:36:24,196 INFO  L268        CegarLoopResult]: For program point  L12-2(line 12)  no Hoare annotation was computed.
[2020-09-24 21:36:24,196 INFO  L268        CegarLoopResult]: For program point  L70(line 70)  no Hoare annotation was computed.
[2020-09-24 21:36:24,196 INFO  L268        CegarLoopResult]: For program point  L37(line 37)  no Hoare annotation was computed.
[2020-09-24 21:36:24,196 INFO  L268        CegarLoopResult]: For program point  L29(line 29)  no Hoare annotation was computed.
[2020-09-24 21:36:24,196 INFO  L268        CegarLoopResult]: For program point  L54(line 54)  no Hoare annotation was computed.
[2020-09-24 21:36:24,196 INFO  L268        CegarLoopResult]: For program point  L79(line 79)  no Hoare annotation was computed.
[2020-09-24 21:36:24,197 INFO  L268        CegarLoopResult]: For program point  L46(line 46)  no Hoare annotation was computed.
[2020-09-24 21:36:24,197 INFO  L268        CegarLoopResult]: For program point  L13(line 13)  no Hoare annotation was computed.
[2020-09-24 21:36:24,197 INFO  L268        CegarLoopResult]: For program point  mainFINAL(lines 4 93)  no Hoare annotation was computed.
[2020-09-24 21:36:24,197 INFO  L268        CegarLoopResult]: For program point  mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91)  no Hoare annotation was computed.
[2020-09-24 21:36:24,197 INFO  L268        CegarLoopResult]: For program point  L63-1(lines 24 88)  no Hoare annotation was computed.
[2020-09-24 21:36:24,197 INFO  L271        CegarLoopResult]: At program point  mainENTRY(lines 4 93)  the Hoare annotation is:  true
[2020-09-24 21:36:24,198 INFO  L268        CegarLoopResult]: For program point  L22(line 22)  no Hoare annotation was computed.
[2020-09-24 21:36:24,198 INFO  L268        CegarLoopResult]: For program point  L80(line 80)  no Hoare annotation was computed.
[2020-09-24 21:36:24,198 INFO  L268        CegarLoopResult]: For program point  L6(line 6)  no Hoare annotation was computed.
[2020-09-24 21:36:24,198 INFO  L268        CegarLoopResult]: For program point  L6-1(line 6)  no Hoare annotation was computed.
[2020-09-24 21:36:24,198 INFO  L268        CegarLoopResult]: For program point  L64(line 64)  no Hoare annotation was computed.
[2020-09-24 21:36:24,198 INFO  L268        CegarLoopResult]: For program point  L31(line 31)  no Hoare annotation was computed.
[2020-09-24 21:36:24,199 INFO  L271        CegarLoopResult]: At program point  L89(lines 5 93)  the Hoare annotation is:  true
[2020-09-24 21:36:24,199 INFO  L268        CegarLoopResult]: For program point  L15(line 15)  no Hoare annotation was computed.
[2020-09-24 21:36:24,199 INFO  L268        CegarLoopResult]: For program point  L15-1(line 15)  no Hoare annotation was computed.
[2020-09-24 21:36:24,199 INFO  L268        CegarLoopResult]: For program point  L15-2(line 15)  no Hoare annotation was computed.
[2020-09-24 21:36:24,199 INFO  L268        CegarLoopResult]: For program point  L73-1(lines 24 88)  no Hoare annotation was computed.
[2020-09-24 21:36:24,199 INFO  L268        CegarLoopResult]: For program point  L7(line 7)  no Hoare annotation was computed.
[2020-09-24 21:36:24,199 INFO  L268        CegarLoopResult]: For program point  L65(line 65)  no Hoare annotation was computed.
[2020-09-24 21:36:24,200 INFO  L268        CegarLoopResult]: For program point  L57-1(lines 24 88)  no Hoare annotation was computed.
[2020-09-24 21:36:24,200 INFO  L268        CegarLoopResult]: For program point  L16(line 16)  no Hoare annotation was computed.
[2020-09-24 21:36:24,200 INFO  L268        CegarLoopResult]: For program point  L49-1(lines 24 88)  no Hoare annotation was computed.
[2020-09-24 21:36:24,200 INFO  L268        CegarLoopResult]: For program point  L74(line 74)  no Hoare annotation was computed.
[2020-09-24 21:36:24,200 INFO  L268        CegarLoopResult]: For program point  L41(lines 41 43)  no Hoare annotation was computed.
[2020-09-24 21:36:24,200 INFO  L268        CegarLoopResult]: For program point  L41-2(lines 24 88)  no Hoare annotation was computed.
[2020-09-24 21:36:24,200 INFO  L268        CegarLoopResult]: For program point  L33(line 33)  no Hoare annotation was computed.
[2020-09-24 21:36:24,201 INFO  L268        CegarLoopResult]: For program point  L58(line 58)  no Hoare annotation was computed.
[2020-09-24 21:36:24,201 INFO  L268        CegarLoopResult]: For program point  L25(line 25)  no Hoare annotation was computed.
[2020-09-24 21:36:24,201 INFO  L268        CegarLoopResult]: For program point  L25-1(line 25)  no Hoare annotation was computed.
[2020-09-24 21:36:24,201 INFO  L268        CegarLoopResult]: For program point  L25-2(line 25)  no Hoare annotation was computed.
[2020-09-24 21:36:24,201 INFO  L268        CegarLoopResult]: For program point  L50(line 50)  no Hoare annotation was computed.
[2020-09-24 21:36:24,201 INFO  L271        CegarLoopResult]: At program point  L83-1(lines 24 88)  the Hoare annotation is:  true
[2020-09-24 21:36:24,201 INFO  L268        CegarLoopResult]: For program point  L75(line 75)  no Hoare annotation was computed.
[2020-09-24 21:36:24,202 INFO  L268        CegarLoopResult]: For program point  L42(line 42)  no Hoare annotation was computed.
[2020-09-24 21:36:24,202 INFO  L268        CegarLoopResult]: For program point  L9(line 9)  no Hoare annotation was computed.
[2020-09-24 21:36:24,202 INFO  L268        CegarLoopResult]: For program point  L9-1(line 9)  no Hoare annotation was computed.
[2020-09-24 21:36:24,202 INFO  L268        CegarLoopResult]: For program point  L9-2(line 9)  no Hoare annotation was computed.
[2020-09-24 21:36:24,202 INFO  L268        CegarLoopResult]: For program point  L92(line 92)  no Hoare annotation was computed.
[2020-09-24 21:36:24,202 INFO  L268        CegarLoopResult]: For program point  L26(lines 26 28)  no Hoare annotation was computed.
[2020-09-24 21:36:24,202 INFO  L268        CegarLoopResult]: For program point  L84(line 84)  no Hoare annotation was computed.
[2020-09-24 21:36:24,202 INFO  L264        CegarLoopResult]: At program point  L84-1(lines 5 93)  the Hoare annotation is:  false
[2020-09-24 21:36:24,203 INFO  L268        CegarLoopResult]: For program point  L18(line 18)  no Hoare annotation was computed.
[2020-09-24 21:36:24,203 INFO  L268        CegarLoopResult]: For program point  L18-1(line 18)  no Hoare annotation was computed.
[2020-09-24 21:36:24,203 INFO  L268        CegarLoopResult]: For program point  L18-2(line 18)  no Hoare annotation was computed.
[2020-09-24 21:36:24,203 INFO  L268        CegarLoopResult]: For program point  L10(line 10)  no Hoare annotation was computed.
[2020-09-24 21:36:24,203 INFO  L268        CegarLoopResult]: For program point  L35(line 35)  no Hoare annotation was computed.
[2020-09-24 21:36:24,203 INFO  L268        CegarLoopResult]: For program point  L68-1(lines 24 88)  no Hoare annotation was computed.
[2020-09-24 21:36:24,218 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:36:24 BoogieIcfgContainer
[2020-09-24 21:36:24,218 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 21:36:24,222 INFO  L168              Benchmark]: Toolchain (without parser) took 3372.04 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 101.6 MB in the beginning and 198.8 MB in the end (delta: -97.3 MB). Peak memory consumption was 8.1 MB. Max. memory is 7.1 GB.
[2020-09-24 21:36:24,222 INFO  L168              Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 21:36:24,223 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 338.10 ms. Allocated memory is still 140.0 MB. Free memory was 100.9 MB in the beginning and 91.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-09-24 21:36:24,224 INFO  L168              Benchmark]: Boogie Preprocessor took 123.47 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 181.0 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
[2020-09-24 21:36:24,225 INFO  L168              Benchmark]: RCFGBuilder took 459.18 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 163.6 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB.
[2020-09-24 21:36:24,226 INFO  L168              Benchmark]: TraceAbstraction took 2439.76 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 163.6 MB in the beginning and 198.8 MB in the end (delta: -35.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 7.1 GB.
[2020-09-24 21:36:24,229 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 338.10 ms. Allocated memory is still 140.0 MB. Free memory was 100.9 MB in the beginning and 91.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 123.47 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 181.0 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 459.18 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 163.6 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 2439.76 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 163.6 MB in the beginning and 198.8 MB in the end (delta: -35.2 MB). Peak memory consumption was 7.3 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - PositiveResult [Line: 91]: call of __VERIFIER_error() unreachable
    For all program executions holds that call of __VERIFIER_error() unreachable at this location
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - InvariantResult [Line: 24]: Loop Invariant
    Derived loop invariant: 1
  - InvariantResult [Line: 5]: Loop Invariant
    Derived loop invariant: 0
  - InvariantResult [Line: 5]: Loop Invariant
    Derived loop invariant: 1
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 956 SDtfs, 332 SDslu, 668 SDs, 0 SdLazy, 49 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=491occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 266 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 41 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 455 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 445 ConstructedInterpolants, 0 QuantifiedInterpolants, 24725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 correct!
Received shutdown request...