/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 02:03:22,928 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 02:03:22,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 02:03:22,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 02:03:22,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 02:03:22,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 02:03:22,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 02:03:22,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 02:03:22,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 02:03:22,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 02:03:22,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 02:03:23,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 02:03:23,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 02:03:23,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 02:03:23,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 02:03:23,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 02:03:23,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 02:03:23,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 02:03:23,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 02:03:23,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 02:03:23,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 02:03:23,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 02:03:23,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 02:03:23,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 02:03:23,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 02:03:23,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 02:03:23,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 02:03:23,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 02:03:23,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 02:03:23,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 02:03:23,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 02:03:23,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 02:03:23,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 02:03:23,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 02:03:23,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 02:03:23,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 02:03:23,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 02:03:23,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 02:03:23,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 02:03:23,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 02:03:23,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 02:03:23,071 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
[2020-09-25 02:03:23,117 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 02:03:23,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 02:03:23,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 02:03:23,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 02:03:23,120 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 02:03:23,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 02:03:23,121 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 02:03:23,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 02:03:23,121 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 02:03:23,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 02:03:23,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 02:03:23,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 02:03:23,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 02:03:23,124 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 02:03:23,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 02:03:23,124 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 02:03:23,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 02:03:23,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 02:03:23,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 02:03:23,125 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 02:03:23,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 02:03:23,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 02:03:23,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 02:03:23,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 02:03:23,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 02:03:23,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 02:03:23,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 02:03:23,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 02:03:23,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 02:03:23,127 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;
[2020-09-25 02:03:23,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 02:03:23,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 02:03:23,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 02:03:23,733 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 02:03:23,733 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 02:03:23,735 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c
[2020-09-25 02:03:23,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ba1155cf/6789badfc6764370941e1986d4c66e6f/FLAG6354b9d42
[2020-09-25 02:03:24,342 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 02:03:24,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c
[2020-09-25 02:03:24,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ba1155cf/6789badfc6764370941e1986d4c66e6f/FLAG6354b9d42
[2020-09-25 02:03:24,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ba1155cf/6789badfc6764370941e1986d4c66e6f
[2020-09-25 02:03:24,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 02:03:24,712 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 02:03:24,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 02:03:24,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 02:03:24,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 02:03:24,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:03:24" (1/1) ...
[2020-09-25 02:03:24,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:24, skipping insertion in model container
[2020-09-25 02:03:24,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:03:24" (1/1) ...
[2020-09-25 02:03:24,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 02:03:24,765 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 02:03:25,027 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:03:25,032 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 02:03:25,049 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:03:25,064 INFO L208 MainTranslator]: Completed translation
[2020-09-25 02:03:25,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:25 WrapperNode
[2020-09-25 02:03:25,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 02:03:25,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 02:03:25,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 02:03:25,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 02:03:25,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:25" (1/1) ...
[2020-09-25 02:03:25,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:25" (1/1) ...
[2020-09-25 02:03:25,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:25" (1/1) ...
[2020-09-25 02:03:25,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:25" (1/1) ...
[2020-09-25 02:03:25,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:25" (1/1) ...
[2020-09-25 02:03:25,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:25" (1/1) ...
[2020-09-25 02:03:25,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:25" (1/1) ...
[2020-09-25 02:03:25,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 02:03:25,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 02:03:25,100 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 02:03:25,100 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 02:03:25,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:25" (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
[2020-09-25 02:03:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 02:03:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 02:03:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure id
[2020-09-25 02:03:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 02:03:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 02:03:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 02:03:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure id
[2020-09-25 02:03:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 02:03:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 02:03:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 02:03:25,500 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 02:03:25,501 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 02:03:25,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:03:25 BoogieIcfgContainer
[2020-09-25 02:03:25,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 02:03:25,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 02:03:25,508 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 02:03:25,512 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 02:03:25,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:03:24" (1/3) ...
[2020-09-25 02:03:25,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d26f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:03:25, skipping insertion in model container
[2020-09-25 02:03:25,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:03:25" (2/3) ...
[2020-09-25 02:03:25,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d26f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:03:25, skipping insertion in model container
[2020-09-25 02:03:25,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:03:25" (3/3) ...
[2020-09-25 02:03:25,518 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c
[2020-09-25 02:03:25,532 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 02:03:25,543 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 02:03:25,602 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 02:03:25,672 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 02:03:25,673 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 02:03:25,673 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 02:03:25,673 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 02:03:25,673 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 02:03:25,674 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 02:03:25,674 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 02:03:25,674 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 02:03:25,698 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states.
[2020-09-25 02:03:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-09-25 02:03:25,706 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:03:25,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:03:25,708 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:03:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:03:25,715 INFO L82 PathProgramCache]: Analyzing trace with hash 856871792, now seen corresponding path program 1 times
[2020-09-25 02:03:25,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:03:25,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314513772]
[2020-09-25 02:03:25,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:03:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:25,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:25,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-25 02:03:25,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63
[2020-09-25 02:03:25,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 02:03:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-09-25 02:03:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-25 02:03:25,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 02:03:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:03:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:26,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:26,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 02:03:26,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:26,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 02:03:26,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:03:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:03:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:03:26,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-25 02:03:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:26,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:26,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 02:03:26,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:26,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-09-25 02:03:26,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 02:03:26,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 02:03:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:03:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 02:03:26,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314513772]
[2020-09-25 02:03:26,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:03:26,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 02:03:26,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505306830]
[2020-09-25 02:03:26,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 02:03:26,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:03:26,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 02:03:26,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 02:03:26,168 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states.
[2020-09-25 02:03:26,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:03:26,284 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions.
[2020-09-25 02:03:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 02:03:26,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18
[2020-09-25 02:03:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:03:26,298 INFO L225 Difference]: With dead ends: 44
[2020-09-25 02:03:26,299 INFO L226 Difference]: Without dead ends: 28
[2020-09-25 02:03:26,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 02:03:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2020-09-25 02:03:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2020-09-25 02:03:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-09-25 02:03:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions.
[2020-09-25 02:03:26,356 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18
[2020-09-25 02:03:26,356 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:03:26,356 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions.
[2020-09-25 02:03:26,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 02:03:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions.
[2020-09-25 02:03:26,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-09-25 02:03:26,360 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:03:26,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:03:26,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 02:03:26,361 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:03:26,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:03:26,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1774609951, now seen corresponding path program 1 times
[2020-09-25 02:03:26,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:03:26,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406739472]
[2020-09-25 02:03:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:03:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:26,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:26,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-09-25 02:03:26,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:03:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529
[2020-09-25 02:03:26,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 02:03:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31
[2020-09-25 02:03:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-25 02:03:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:03:26,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:03:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:26,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:26,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:26,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 02:03:26,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 02:03:26,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:03:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:03:26,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:03:26,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-25 02:03:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:26,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:27,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:27,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-25 02:03:27,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:03:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210
[2020-09-25 02:03:27,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 02:03:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-25 02:03:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-25 02:03:27,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:03:27,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 02:03:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:27,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:27,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 02:03:27,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-09-25 02:03:27,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 02:03:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 02:03:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:03:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-25 02:03:27,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406739472]
[2020-09-25 02:03:27,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:03:27,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-25 02:03:27,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631949353]
[2020-09-25 02:03:27,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 02:03:27,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:03:27,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 02:03:27,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-25 02:03:27,267 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 7 states.
[2020-09-25 02:03:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:03:27,327 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions.
[2020-09-25 02:03:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 02:03:27,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28
[2020-09-25 02:03:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:03:27,330 INFO L225 Difference]: With dead ends: 49
[2020-09-25 02:03:27,330 INFO L226 Difference]: Without dead ends: 35
[2020-09-25 02:03:27,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2020-09-25 02:03:27,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-09-25 02:03:27,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32.
[2020-09-25 02:03:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-09-25 02:03:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions.
[2020-09-25 02:03:27,340 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28
[2020-09-25 02:03:27,340 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:03:27,340 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions.
[2020-09-25 02:03:27,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 02:03:27,340 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions.
[2020-09-25 02:03:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-09-25 02:03:27,342 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:03:27,342 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:03:27,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 02:03:27,343 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:03:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:03:27,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1645321695, now seen corresponding path program 1 times
[2020-09-25 02:03:27,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:03:27,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258176155]
[2020-09-25 02:03:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:03:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:27,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:27,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:27,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:27,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-09-25 02:03:27,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:03:27,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219
[2020-09-25 02:03:27,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 02:03:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30
[2020-09-25 02:03:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-25 02:03:27,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:03:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:03:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:27,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:27,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:27,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 02:03:27,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:27,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 02:03:27,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:03:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:03:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:03:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-25 02:03:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:27,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:27,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:27,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:27,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-25 02:03:27,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:03:27,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126
[2020-09-25 02:03:27,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 02:03:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-25 02:03:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:03:27,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 02:03:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:27,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:27,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:27,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 02:03:27,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28
[2020-09-25 02:03:27,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 02:03:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 02:03:27,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:03:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-25 02:03:27,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258176155]
[2020-09-25 02:03:27,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 02:03:27,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-25 02:03:27,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137705705]
[2020-09-25 02:03:27,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-25 02:03:27,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:03:27,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-25 02:03:27,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-09-25 02:03:27,852 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states.
[2020-09-25 02:03:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:03:27,980 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions.
[2020-09-25 02:03:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-09-25 02:03:27,982 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28
[2020-09-25 02:03:27,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:03:27,984 INFO L225 Difference]: With dead ends: 41
[2020-09-25 02:03:27,985 INFO L226 Difference]: Without dead ends: 35
[2020-09-25 02:03:27,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2020-09-25 02:03:27,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-09-25 02:03:27,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2020-09-25 02:03:27,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2020-09-25 02:03:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions.
[2020-09-25 02:03:28,003 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28
[2020-09-25 02:03:28,003 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:03:28,003 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions.
[2020-09-25 02:03:28,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-25 02:03:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions.
[2020-09-25 02:03:28,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-09-25 02:03:28,006 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:03:28,007 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:03:28,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 02:03:28,007 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:03:28,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:03:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash 170302224, now seen corresponding path program 1 times
[2020-09-25 02:03:28,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:03:28,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843765321]
[2020-09-25 02:03:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:03:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:28,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:28,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:28,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51
[2020-09-25 02:03:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:03:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569
[2020-09-25 02:03:28,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 02:03:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43
[2020-09-25 02:03:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-25 02:03:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 20
[2020-09-25 02:03:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:03:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:28,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:28,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:28,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 02:03:28,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 02:03:28,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:03:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:03:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:03:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-25 02:03:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:28,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:29,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:29,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-25 02:03:29,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:03:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465
[2020-09-25 02:03:29,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 02:03:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15
[2020-09-25 02:03:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-09-25 02:03:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:03:29,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 02:03:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:29,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:29,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:29,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-25 02:03:29,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:29,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84
[2020-09-25 02:03:29,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 02:03:29,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-25 02:03:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 02:03:29,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 02:03:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:29,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:29,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:29,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 02:03:29,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:29,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-09-25 02:03:29,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:29,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 02:03:29,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:29,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 02:03:29,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:03:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2020-09-25 02:03:29,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843765321]
[2020-09-25 02:03:29,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 02:03:29,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-25 02:03:29,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915801541]
[2020-09-25 02:03:29,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-25 02:03:29,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:03:29,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-25 02:03:29,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2020-09-25 02:03:29,344 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 10 states.
[2020-09-25 02:03:29,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:03:29,440 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions.
[2020-09-25 02:03:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-09-25 02:03:29,440 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38
[2020-09-25 02:03:29,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:03:29,442 INFO L225 Difference]: With dead ends: 56
[2020-09-25 02:03:29,442 INFO L226 Difference]: Without dead ends: 42
[2020-09-25 02:03:29,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2020-09-25 02:03:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2020-09-25 02:03:29,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39.
[2020-09-25 02:03:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2020-09-25 02:03:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions.
[2020-09-25 02:03:29,451 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 38
[2020-09-25 02:03:29,451 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:03:29,451 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions.
[2020-09-25 02:03:29,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-25 02:03:29,451 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions.
[2020-09-25 02:03:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-09-25 02:03:29,453 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:03:29,453 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:03:29,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 02:03:29,454 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:03:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:03:29,454 INFO L82 PathProgramCache]: Analyzing trace with hash 41013968, now seen corresponding path program 2 times
[2020-09-25 02:03:29,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:03:29,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380281026]
[2020-09-25 02:03:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:03:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:29,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:29,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:29,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:29,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51
[2020-09-25 02:03:29,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 02:03:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531
[2020-09-25 02:03:29,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 02:03:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42
[2020-09-25 02:03:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-25 02:03:29,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:03:30,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:03:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:30,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:30,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:30,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 02:03:30,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-25 02:03:30,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:03:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:03:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:03:30,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-25 02:03:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:30,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:30,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:30,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:30,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:30,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-25 02:03:30,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 02:03:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450
[2020-09-25 02:03:30,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 02:03:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:30,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30
[2020-09-25 02:03:30,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:03:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 02:03:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:30,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:30,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:30,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-25 02:03:30,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:03:30,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148
[2020-09-25 02:03:30,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:30,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 02:03:30,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:30,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-25 02:03:30,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:03:30,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 02:03:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:03:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:03:30,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:03:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 02:03:30,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:03:30,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 02:03:30,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:03:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:03:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:03:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:03:30,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:03:30,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2020-09-25 02:03:30,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380281026]
[2020-09-25 02:03:30,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 02:03:30,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-25 02:03:30,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406574]
[2020-09-25 02:03:30,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-25 02:03:30,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:03:30,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-25 02:03:30,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-09-25 02:03:30,738 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 9 states.
[2020-09-25 02:03:30,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:03:30,825 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions.
[2020-09-25 02:03:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-09-25 02:03:30,825 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38
[2020-09-25 02:03:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:03:30,826 INFO L225 Difference]: With dead ends: 41
[2020-09-25 02:03:30,826 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 02:03:30,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156
[2020-09-25 02:03:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 02:03:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 02:03:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 02:03:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 02:03:30,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38
[2020-09-25 02:03:30,828 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:03:30,828 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 02:03:30,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-25 02:03:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 02:03:30,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 02:03:30,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 02:03:30,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 02:03:30,876 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 02:03:30,876 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 02:03:30,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 02:03:30,877 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 02:03:30,877 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 02:03:30,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 02:03:30,877 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed.
[2020-09-25 02:03:30,877 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true
[2020-09-25 02:03:30,878 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed.
[2020-09-25 02:03:30,878 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-09-25 02:03:30,878 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed.
[2020-09-25 02:03:30,878 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true
[2020-09-25 02:03:30,878 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed.
[2020-09-25 02:03:30,878 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed.
[2020-09-25 02:03:30,879 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed.
[2020-09-25 02:03:30,879 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed.
[2020-09-25 02:03:30,879 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed.
[2020-09-25 02:03:30,879 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed.
[2020-09-25 02:03:30,879 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed.
[2020-09-25 02:03:30,879 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed.
[2020-09-25 02:03:30,879 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true
[2020-09-25 02:03:30,879 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-25 02:03:30,880 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed.
[2020-09-25 02:03:30,880 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true
[2020-09-25 02:03:30,880 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed.
[2020-09-25 02:03:30,880 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed.
[2020-09-25 02:03:30,880 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed.
[2020-09-25 02:03:30,880 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed.
[2020-09-25 02:03:30,880 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed.
[2020-09-25 02:03:30,881 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed.
[2020-09-25 02:03:30,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:03:30 BoogieIcfgContainer
[2020-09-25 02:03:30,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 02:03:30,892 INFO L168 Benchmark]: Toolchain (without parser) took 6182.43 ms. Allocated memory was 146.8 MB in the beginning and 281.0 MB in the end (delta: 134.2 MB). Free memory was 103.1 MB in the beginning and 250.7 MB in the end (delta: -147.5 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 02:03:30,893 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-25 02:03:30,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.69 ms. Allocated memory is still 146.8 MB. Free memory was 102.5 MB in the beginning and 93.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
[2020-09-25 02:03:30,895 INFO L168 Benchmark]: Boogie Preprocessor took 33.58 ms. Allocated memory is still 146.8 MB. Free memory was 93.3 MB in the beginning and 91.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB.
[2020-09-25 02:03:30,896 INFO L168 Benchmark]: RCFGBuilder took 406.40 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 91.9 MB in the beginning and 169.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
[2020-09-25 02:03:30,897 INFO L168 Benchmark]: TraceAbstraction took 5380.51 ms. Allocated memory was 202.9 MB in the beginning and 281.0 MB in the end (delta: 78.1 MB). Free memory was 169.1 MB in the beginning and 250.7 MB in the end (delta: -81.6 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 02:03:30,903 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.27 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 352.69 ms. Allocated memory is still 146.8 MB. Free memory was 102.5 MB in the beginning and 93.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 33.58 ms. Allocated memory is still 146.8 MB. Free memory was 93.3 MB in the beginning and 91.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 406.40 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 91.9 MB in the beginning and 169.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 5380.51 ms. Allocated memory was 202.9 MB in the beginning and 281.0 MB in the end (delta: 78.1 MB). Free memory was 169.1 MB in the beginning and 250.7 MB in the end (delta: -81.6 MB). There was no memory consumed. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 15]: 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
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 28 SDslu, 605 SDs, 0 SdLazy, 184 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 8697 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 32/43 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...