/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 interpolation-heuristic=FIRST --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/sum_2x3-2.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 15:59:37,795 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 15:59:37,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 15:59:37,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 15:59:37,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 15:59:37,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 15:59:37,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 15:59:37,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 15:59:37,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 15:59:37,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 15:59:37,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 15:59:37,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 15:59:37,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 15:59:37,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 15:59:37,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 15:59:37,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 15:59:37,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 15:59:37,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 15:59:37,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 15:59:37,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 15:59:37,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 15:59:37,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 15:59:37,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 15:59:37,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 15:59:37,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 15:59:37,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 15:59:37,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 15:59:37,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 15:59:37,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 15:59:37,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 15:59:37,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 15:59:37,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 15:59:37,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 15:59:37,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 15:59:37,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 15:59:37,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 15:59:37,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 15:59:37,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 15:59:37,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 15:59:37,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 15:59:37,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 15:59:37,901 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 15:59:37,945 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 15:59:37,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 15:59:37,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 15:59:37,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 15:59:37,948 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 15:59:37,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 15:59:37,949 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 15:59:37,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 15:59:37,949 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 15:59:37,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 15:59:37,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 15:59:37,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 15:59:37,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 15:59:37,951 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 15:59:37,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 15:59:37,951 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 15:59:37,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 15:59:37,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 15:59:37,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 15:59:37,952 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 15:59:37,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 15:59:37,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 15:59:37,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 15:59:37,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 15:59:37,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 15:59:37,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 15:59:37,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 15:59:37,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 15:59:37,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 15:59:37,955 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true;
[2020-09-24 15:59:38,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 15:59:38,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 15:59:38,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 15:59:38,416 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 15:59:38,416 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 15:59:38,417 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_2x3-2.c
[2020-09-24 15:59:38,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5283c0fff/48cae500b0844d368ddeff2dbec4ed8f/FLAG4d3e4d173
[2020-09-24 15:59:39,050 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 15:59:39,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_2x3-2.c
[2020-09-24 15:59:39,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5283c0fff/48cae500b0844d368ddeff2dbec4ed8f/FLAG4d3e4d173
[2020-09-24 15:59:39,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5283c0fff/48cae500b0844d368ddeff2dbec4ed8f
[2020-09-24 15:59:39,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 15:59:39,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 15:59:39,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 15:59:39,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 15:59:39,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 15:59:39,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:59:39" (1/1) ...
[2020-09-24 15:59:39,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8b5cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:39, skipping insertion in model container
[2020-09-24 15:59:39,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:59:39" (1/1) ...
[2020-09-24 15:59:39,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 15:59:39,462 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 15:59:39,710 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:59:39,716 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 15:59:39,731 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:59:39,746 INFO L208 MainTranslator]: Completed translation
[2020-09-24 15:59:39,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:39 WrapperNode
[2020-09-24 15:59:39,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 15:59:39,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 15:59:39,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 15:59:39,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 15:59:39,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:39" (1/1) ...
[2020-09-24 15:59:39,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:39" (1/1) ...
[2020-09-24 15:59:39,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:39" (1/1) ...
[2020-09-24 15:59:39,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:39" (1/1) ...
[2020-09-24 15:59:39,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:39" (1/1) ...
[2020-09-24 15:59:39,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:39" (1/1) ...
[2020-09-24 15:59:39,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:39" (1/1) ...
[2020-09-24 15:59:39,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 15:59:39,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 15:59:39,853 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 15:59:39,853 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 15:59:39,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:39" (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 15:59:39,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 15:59:39,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 15:59:39,930 INFO L138 BoogieDeclarations]: Found implementation of procedure sum
[2020-09-24 15:59:39,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 15:59:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 15:59:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure sum
[2020-09-24 15:59:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 15:59:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 15:59:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 15:59:40,143 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 15:59:40,144 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 15:59:40,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:59:40 BoogieIcfgContainer
[2020-09-24 15:59:40,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 15:59:40,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 15:59:40,169 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 15:59:40,177 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 15:59:40,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:59:39" (1/3) ...
[2020-09-24 15:59:40,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e74fce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:59:40, skipping insertion in model container
[2020-09-24 15:59:40,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:39" (2/3) ...
[2020-09-24 15:59:40,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e74fce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:59:40, skipping insertion in model container
[2020-09-24 15:59:40,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:59:40" (3/3) ...
[2020-09-24 15:59:40,184 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_2x3-2.c
[2020-09-24 15:59:40,211 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 15:59:40,221 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 15:59:40,260 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 15:59:40,292 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 15:59:40,292 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 15:59:40,293 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 15:59:40,293 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 15:59:40,293 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 15:59:40,293 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 15:59:40,294 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 15:59:40,294 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 15:59:40,315 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states.
[2020-09-24 15:59:40,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-09-24 15:59:40,324 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 15:59:40,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:59:40,325 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:59:40,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:59:40,333 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times
[2020-09-24 15:59:40,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:59:40,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069946327]
[2020-09-24 15:59:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:59:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:40,510 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:59:40,510 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:59:40,511 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:59:40,511 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:40,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-24 15:59:40,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:40,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30
[2020-09-24 15:59:40,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 15:59:40,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 15:59:40,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 15:59:40,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 15:59:40,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:59:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:40,579 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:59:40,579 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:59:40,580 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:59:40,580 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:40,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 15:59:40,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:40,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 15:59:40,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 15:59:40,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 15:59:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 15:59:40,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 15:59:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:59:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:40,602 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:59:40,603 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:59:40,603 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:59:40,603 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:40,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 15:59:40,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 15:59:40,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 15:59:40,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 15:59:40,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 15:59:40,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 15:59:40,645 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 15:59:40,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069946327]
[2020-09-24 15:59:40,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:59:40,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 15:59:40,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684983863]
[2020-09-24 15:59:40,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 15:59:40,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:59:40,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 15:59:40,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 15:59:40,673 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states.
[2020-09-24 15:59:40,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:59:40,790 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions.
[2020-09-24 15:59:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-09-24 15:59:40,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18
[2020-09-24 15:59:40,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:59:40,806 INFO L225 Difference]: With dead ends: 39
[2020-09-24 15:59:40,806 INFO L226 Difference]: Without dead ends: 25
[2020-09-24 15:59:40,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 15:59:40,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2020-09-24 15:59:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2020-09-24 15:59:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2020-09-24 15:59:40,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions.
[2020-09-24 15:59:40,861 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18
[2020-09-24 15:59:40,862 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:59:40,862 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions.
[2020-09-24 15:59:40,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 15:59:40,862 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions.
[2020-09-24 15:59:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-09-24 15:59:40,865 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 15:59:40,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:59:40,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 15:59:40,866 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:59:40,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:59:40,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times
[2020-09-24 15:59:40,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:59:40,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094584358]
[2020-09-24 15:59:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:59:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:40,910 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:59:40,911 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:59:40,911 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:59:40,911 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:40,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38
[2020-09-24 15:59:40,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-24 15:59:40,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 15:59:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 15:59:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-09-24 15:59:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 15:59:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:59:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:40,961 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:59:40,961 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:59:40,961 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:59:40,962 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:40,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 15:59:40,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:40,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 15:59:40,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 15:59:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 15:59:40,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 15:59:40,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 15:59:40,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:59:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:41,000 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:59:41,000 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:59:41,000 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:59:41,001 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:41,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 15:59:41,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-09-24 15:59:41,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 15:59:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 15:59:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-09-24 15:59:41,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 15:59:41,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 15:59:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:41,059 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:59:41,060 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:59:41,060 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:59:41,061 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:41,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 15:59:41,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:41,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 15:59:41,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 15:59:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 15:59:41,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 15:59:41,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 15:59:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-24 15:59:41,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094584358]
[2020-09-24 15:59:41,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 15:59:41,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 15:59:41,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121947978]
[2020-09-24 15:59:41,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 15:59:41,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:59:41,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 15:59:41,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-24 15:59:41,110 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states.
[2020-09-24 15:59:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:59:41,178 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions.
[2020-09-24 15:59:41,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-24 15:59:41,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27
[2020-09-24 15:59:41,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:59:41,181 INFO L225 Difference]: With dead ends: 36
[2020-09-24 15:59:41,181 INFO L226 Difference]: Without dead ends: 30
[2020-09-24 15:59:41,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2020-09-24 15:59:41,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2020-09-24 15:59:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2020-09-24 15:59:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2020-09-24 15:59:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions.
[2020-09-24 15:59:41,191 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27
[2020-09-24 15:59:41,191 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:59:41,191 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions.
[2020-09-24 15:59:41,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 15:59:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions.
[2020-09-24 15:59:41,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2020-09-24 15:59:41,193 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 15:59:41,194 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:59:41,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 15:59:41,194 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:59:41,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:59:41,195 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times
[2020-09-24 15:59:41,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:59:41,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419882288]
[2020-09-24 15:59:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:59:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:41,353 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2
[2020-09-24 15:59:41,353 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -3
[2020-09-24 15:59:41,354 FATAL L256 erpolLogProxyWrapper]: Difference in width: 3
[2020-09-24 15:59:41,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:41,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-09-24 15:59:41,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:41,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134
[2020-09-24 15:59:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-09-24 15:59:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-24 15:59:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34
[2020-09-24 15:59:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 15:59:41,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:59:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:41,462 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:59:41,463 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:59:41,463 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:59:41,463 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:41,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 15:59:41,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 15:59:41,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 15:59:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 15:59:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 15:59:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 15:59:41,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:59:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:41,586 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2
[2020-09-24 15:59:41,587 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:59:41,587 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:59:41,587 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:41,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 15:59:41,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:41,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106
[2020-09-24 15:59:41,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-24 15:59:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 15:59:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 15:59:41,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 15:59:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 15:59:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:41,728 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:59:41,731 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:59:41,731 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:59:41,732 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:41,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 15:59:41,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:41,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55
[2020-09-24 15:59:41,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:41,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-24 15:59:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 15:59:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 15:59:41,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 15:59:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 15:59:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:59:41,816 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:59:41,822 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:59:41,822 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:59:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:59:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 15:59:41,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:59:41,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37
[2020-09-24 15:59:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:59:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 15:59:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 15:59:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 15:59:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 15:59:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2020-09-24 15:59:41,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419882288]
[2020-09-24 15:59:41,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 15:59:41,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-24 15:59:41,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280673564]
[2020-09-24 15:59:41,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-24 15:59:41,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:59:41,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-24 15:59:41,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-09-24 15:59:41,869 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 9 states.
[2020-09-24 15:59:42,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:59:42,038 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions.
[2020-09-24 15:59:42,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-09-24 15:59:42,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36
[2020-09-24 15:59:42,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:59:42,040 INFO L225 Difference]: With dead ends: 30
[2020-09-24 15:59:42,040 INFO L226 Difference]: Without dead ends: 0
[2020-09-24 15:59:42,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2020-09-24 15:59:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 15:59:42,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 15:59:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 15:59:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 15:59:42,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36
[2020-09-24 15:59:42,043 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:59:42,043 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 15:59:42,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-24 15:59:42,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 15:59:42,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 15:59:42,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 15:59:42,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 15:59:42,097 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-24 15:59:42,097 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 15:59:42,098 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 15:59:42,098 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-24 15:59:42,098 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-24 15:59:42,098 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-24 15:59:42,098 INFO L268 CegarLoopResult]: For program point sumEXIT(lines 3 9) no Hoare annotation was computed.
[2020-09-24 15:59:42,098 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (<= |sum_#in~n| sum_~n) (= sum_~m |sum_#in~m|) (<= sum_~n |sum_#in~n|))
[2020-09-24 15:59:42,099 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed.
[2020-09-24 15:59:42,099 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed.
[2020-09-24 15:59:42,099 INFO L268 CegarLoopResult]: For program point L7-2(line 7) no Hoare annotation was computed.
[2020-09-24 15:59:42,099 INFO L268 CegarLoopResult]: For program point L4(lines 4 8) no Hoare annotation was computed.
[2020-09-24 15:59:42,099 INFO L268 CegarLoopResult]: For program point L7-3(line 7) no Hoare annotation was computed.
[2020-09-24 15:59:42,099 INFO L268 CegarLoopResult]: For program point L3(lines 3 9) no Hoare annotation was computed.
[2020-09-24 15:59:42,099 INFO L268 CegarLoopResult]: For program point sumFINAL(lines 3 9) no Hoare annotation was computed.
[2020-09-24 15:59:42,100 INFO L271 CegarLoopResult]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true
[2020-09-24 15:59:42,100 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed.
[2020-09-24 15:59:42,100 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true
[2020-09-24 15:59:42,100 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed.
[2020-09-24 15:59:42,100 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-24 15:59:42,100 INFO L268 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed.
[2020-09-24 15:59:42,101 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= main_~a~0 2)
[2020-09-24 15:59:42,101 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed.
[2020-09-24 15:59:42,101 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed.
[2020-09-24 15:59:42,101 INFO L268 CegarLoopResult]: For program point L15-2(lines 11 18) no Hoare annotation was computed.
[2020-09-24 15:59:42,101 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed.
[2020-09-24 15:59:42,101 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed.
[2020-09-24 15:59:42,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:59:42 BoogieIcfgContainer
[2020-09-24 15:59:42,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 15:59:42,113 INFO L168 Benchmark]: Toolchain (without parser) took 2699.61 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 104.8 MB in the beginning and 149.1 MB in the end (delta: -44.3 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB.
[2020-09-24 15:59:42,114 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 15:59:42,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.49 ms. Allocated memory is still 141.0 MB. Free memory was 104.1 MB in the beginning and 94.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
[2020-09-24 15:59:42,116 INFO L168 Benchmark]: Boogie Preprocessor took 105.14 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 94.9 MB in the beginning and 182.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
[2020-09-24 15:59:42,117 INFO L168 Benchmark]: RCFGBuilder took 303.05 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 170.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB.
[2020-09-24 15:59:42,118 INFO L168 Benchmark]: TraceAbstraction took 1941.21 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 170.0 MB in the beginning and 149.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB.
[2020-09-24 15:59:42,123 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 329.49 ms. Allocated memory is still 141.0 MB. Free memory was 104.1 MB in the beginning and 94.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 105.14 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 94.9 MB in the beginning and 182.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 303.05 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 170.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1941.21 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 170.0 MB in the beginning and 149.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 16]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 60 SDslu, 131 SDs, 0 SdLazy, 112 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 18 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 11678 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 18/24 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...