/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/loop-acceleration/simple_4-2.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 02:19:33,818 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 02:19:33,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 02:19:33,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 02:19:33,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 02:19:33,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 02:19:33,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 02:19:33,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 02:19:33,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 02:19:33,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 02:19:33,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 02:19:33,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 02:19:33,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 02:19:33,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 02:19:33,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 02:19:33,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 02:19:33,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 02:19:33,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 02:19:33,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 02:19:33,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 02:19:33,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 02:19:33,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 02:19:33,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 02:19:33,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 02:19:33,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 02:19:33,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 02:19:33,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 02:19:33,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 02:19:33,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 02:19:33,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 02:19:33,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 02:19:33,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 02:19:33,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 02:19:33,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 02:19:33,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 02:19:33,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 02:19:33,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 02:19:33,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 02:19:33,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 02:19:33,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 02:19:33,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 02:19:33,915 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 02:19:33,963 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 02:19:33,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 02:19:33,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 02:19:33,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 02:19:33,966 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 02:19:33,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 02:19:33,967 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 02:19:33,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 02:19:33,967 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 02:19:33,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 02:19:33,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 02:19:33,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 02:19:33,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 02:19:33,970 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 02:19:33,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 02:19:33,970 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 02:19:33,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 02:19:33,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 02:19:33,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 02:19:33,971 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 02:19:33,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 02:19:33,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 02:19:33,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 02:19:33,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 02:19:33,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 02:19:33,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 02:19:33,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 02:19:33,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 02:19:33,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 02:19:33,973 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 02:19:34,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 02:19:34,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 02:19:34,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 02:19:34,464 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 02:19:34,465 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 02:19:34,466 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_4-2.c
[2020-09-25 02:19:34,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/541cefec2/41619ff7a3204cf58925da1c752cf579/FLAG176c4f8c5
[2020-09-25 02:19:35,034 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 02:19:35,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/simple_4-2.c
[2020-09-25 02:19:35,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/541cefec2/41619ff7a3204cf58925da1c752cf579/FLAG176c4f8c5
[2020-09-25 02:19:35,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/541cefec2/41619ff7a3204cf58925da1c752cf579
[2020-09-25 02:19:35,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 02:19:35,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 02:19:35,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 02:19:35,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 02:19:35,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 02:19:35,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:35" (1/1) ...
[2020-09-25 02:19:35,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8f57a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:35, skipping insertion in model container
[2020-09-25 02:19:35,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:35" (1/1) ...
[2020-09-25 02:19:35,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 02:19:35,448 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 02:19:35,713 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:19:35,718 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 02:19:35,733 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:19:35,747 INFO L208 MainTranslator]: Completed translation
[2020-09-25 02:19:35,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:35 WrapperNode
[2020-09-25 02:19:35,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 02:19:35,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 02:19:35,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 02:19:35,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 02:19:35,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:35" (1/1) ...
[2020-09-25 02:19:35,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:35" (1/1) ...
[2020-09-25 02:19:35,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:35" (1/1) ...
[2020-09-25 02:19:35,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:35" (1/1) ...
[2020-09-25 02:19:35,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:35" (1/1) ...
[2020-09-25 02:19:35,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:35" (1/1) ...
[2020-09-25 02:19:35,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:35" (1/1) ...
[2020-09-25 02:19:35,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 02:19:35,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 02:19:35,856 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 02:19:35,856 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 02:19:35,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:35" (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 02:19:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 02:19:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 02:19:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 02:19:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 02:19:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 02:19:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 02:19:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 02:19:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 02:19:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 02:19:36,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 02:19:36,099 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 02:19:36,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:36 BoogieIcfgContainer
[2020-09-25 02:19:36,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 02:19:36,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 02:19:36,105 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 02:19:36,109 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 02:19:36,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:19:35" (1/3) ...
[2020-09-25 02:19:36,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748e9a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:36, skipping insertion in model container
[2020-09-25 02:19:36,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:35" (2/3) ...
[2020-09-25 02:19:36,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748e9a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:36, skipping insertion in model container
[2020-09-25 02:19:36,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:36" (3/3) ...
[2020-09-25 02:19:36,112 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_4-2.c
[2020-09-25 02:19:36,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 02:19:36,131 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 02:19:36,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 02:19:36,182 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 02:19:36,182 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 02:19:36,182 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 02:19:36,182 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 02:19:36,183 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 02:19:36,183 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 02:19:36,183 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 02:19:36,184 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 02:19:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states.
[2020-09-25 02:19:36,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-09-25 02:19:36,208 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:19:36,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:19:36,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:19:36,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:19:36,216 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times
[2020-09-25 02:19:36,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:19:36,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181253929]
[2020-09-25 02:19:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:19:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:36,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:36,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:36,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-09-25 02:19:36,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:19:36,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133
[2020-09-25 02:19:36,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:19:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 02:19:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:19:36,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-25 02:19:36,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:19:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:36,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:36,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:36,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 02:19:36,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:19:36,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 02:19:36,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:36,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:19:36,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:19:36,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:19:36,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:19:36,499 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 02:19:36,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181253929]
[2020-09-25 02:19:36,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:19:36,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-09-25 02:19:36,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83596798]
[2020-09-25 02:19:36,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-09-25 02:19:36,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:19:36,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-09-25 02:19:36,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-25 02:19:36,527 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states.
[2020-09-25 02:19:36,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:19:36,548 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions.
[2020-09-25 02:19:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-09-25 02:19:36,550 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10
[2020-09-25 02:19:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:19:36,559 INFO L225 Difference]: With dead ends: 29
[2020-09-25 02:19:36,560 INFO L226 Difference]: Without dead ends: 12
[2020-09-25 02:19:36,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-25 02:19:36,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2020-09-25 02:19:36,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2020-09-25 02:19:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2020-09-25 02:19:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2020-09-25 02:19:36,600 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10
[2020-09-25 02:19:36,600 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:19:36,601 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2020-09-25 02:19:36,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-09-25 02:19:36,601 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2020-09-25 02:19:36,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-09-25 02:19:36,602 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:19:36,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:19:36,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 02:19:36,602 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:19:36,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:19:36,603 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times
[2020-09-25 02:19:36,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:19:36,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157223501]
[2020-09-25 02:19:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:19:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:36,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:36,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-09-25 02:19:36,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 02:19:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182
[2020-09-25 02:19:36,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 02:19:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-25 02:19:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-09-25 02:19:36,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:19:36,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:19:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:36,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:36,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 02:19:36,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:19:36,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 02:19:36,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:36,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:19:36,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:19:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:19:36,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:19:36,898 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 02:19:36,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157223501]
[2020-09-25 02:19:36,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:19:36,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-25 02:19:36,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035470944]
[2020-09-25 02:19:36,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-25 02:19:36,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:19:36,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-25 02:19:36,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-25 02:19:36,903 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states.
[2020-09-25 02:19:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:19:36,924 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions.
[2020-09-25 02:19:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-25 02:19:36,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10
[2020-09-25 02:19:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:19:36,926 INFO L225 Difference]: With dead ends: 19
[2020-09-25 02:19:36,926 INFO L226 Difference]: Without dead ends: 14
[2020-09-25 02:19:36,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-25 02:19:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2020-09-25 02:19:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13.
[2020-09-25 02:19:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2020-09-25 02:19:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions.
[2020-09-25 02:19:36,934 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10
[2020-09-25 02:19:36,934 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:19:36,934 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions.
[2020-09-25 02:19:36,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-25 02:19:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions.
[2020-09-25 02:19:36,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-09-25 02:19:36,936 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:19:36,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:19:36,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 02:19:36,937 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:19:36,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:19:36,940 INFO L82 PathProgramCache]: Analyzing trace with hash -355776516, now seen corresponding path program 1 times
[2020-09-25 02:19:36,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:19:36,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906165789]
[2020-09-25 02:19:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:19:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:36,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:37,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:37,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:37,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21
[2020-09-25 02:19:37,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 02:19:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385
[2020-09-25 02:19:37,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 02:19:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-25 02:19:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-25 02:19:37,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:19:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:19:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:37,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:37,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 02:19:37,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:19:37,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 02:19:37,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:37,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:19:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:19:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:19:37,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:19:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 02:19:37,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906165789]
[2020-09-25 02:19:37,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 02:19:37,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4
[2020-09-25 02:19:37,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588092699]
[2020-09-25 02:19:37,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-25 02:19:37,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:19:37,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-25 02:19:37,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-09-25 02:19:37,426 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states.
[2020-09-25 02:19:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:19:37,469 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions.
[2020-09-25 02:19:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-25 02:19:37,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12
[2020-09-25 02:19:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:19:37,471 INFO L225 Difference]: With dead ends: 21
[2020-09-25 02:19:37,472 INFO L226 Difference]: Without dead ends: 16
[2020-09-25 02:19:37,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-09-25 02:19:37,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2020-09-25 02:19:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2020-09-25 02:19:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2020-09-25 02:19:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2020-09-25 02:19:37,482 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12
[2020-09-25 02:19:37,482 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:19:37,482 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2020-09-25 02:19:37,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-25 02:19:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2020-09-25 02:19:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-09-25 02:19:37,483 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:19:37,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:19:37,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 02:19:37,484 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:19:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:19:37,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1432978565, now seen corresponding path program 2 times
[2020-09-25 02:19:37,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:19:37,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942366994]
[2020-09-25 02:19:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:19:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:37,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:37,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:37,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-25 02:19:37,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 02:19:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298
[2020-09-25 02:19:37,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 02:19:37,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16
[2020-09-25 02:19:37,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 02:19:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:19:37,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:19:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:37,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:37,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 02:19:37,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:19:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 02:19:37,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:19:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:19:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:19:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:19:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-09-25 02:19:37,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942366994]
[2020-09-25 02:19:37,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:19:37,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 02:19:37,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611211713]
[2020-09-25 02:19:37,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 02:19:37,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:19:37,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 02:19:37,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 02:19:37,956 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states.
[2020-09-25 02:19:37,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:19:37,981 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions.
[2020-09-25 02:19:37,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-09-25 02:19:37,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14
[2020-09-25 02:19:37,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:19:37,982 INFO L225 Difference]: With dead ends: 15
[2020-09-25 02:19:37,982 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 02:19:37,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 02:19:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 02:19:37,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 02:19:37,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 02:19:37,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 02:19:37,984 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14
[2020-09-25 02:19:37,984 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:19:37,985 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 02:19:37,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 02:19:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 02:19:37,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 02:19:37,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 02:19:37,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 02:19:38,017 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 02:19:38,018 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 02:19:38,018 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 02:19:38,018 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 02:19:38,018 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 02:19:38,019 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 02:19:38,019 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 18) the Hoare annotation is: true
[2020-09-25 02:19:38,019 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 18) no Hoare annotation was computed.
[2020-09-25 02:19:38,019 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed.
[2020-09-25 02:19:38,019 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 18) no Hoare annotation was computed.
[2020-09-25 02:19:38,020 INFO L271 CegarLoopResult]: At program point L13-2(lines 13 15) the Hoare annotation is: true
[2020-09-25 02:19:38,020 INFO L264 CegarLoopResult]: At program point L13-3(lines 13 15) the Hoare annotation is: (<= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ .cse0 (* 2147483648 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296)) (* 2147483648 (div main_~x~0 4294967296)))))
[2020-09-25 02:19:38,020 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true
[2020-09-25 02:19:38,020 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed.
[2020-09-25 02:19:38,020 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed.
[2020-09-25 02:19:38,020 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed.
[2020-09-25 02:19:38,021 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed.
[2020-09-25 02:19:38,021 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed.
[2020-09-25 02:19:38,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:19:38 BoogieIcfgContainer
[2020-09-25 02:19:38,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 02:19:38,037 INFO L168 Benchmark]: Toolchain (without parser) took 2641.70 ms. Allocated memory was 141.6 MB in the beginning and 233.3 MB in the end (delta: 91.8 MB). Free memory was 105.3 MB in the beginning and 175.9 MB in the end (delta: -70.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB.
[2020-09-25 02:19:38,038 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB.
[2020-09-25 02:19:38,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.89 ms. Allocated memory is still 141.6 MB. Free memory was 104.4 MB in the beginning and 95.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB.
[2020-09-25 02:19:38,040 INFO L168 Benchmark]: Boogie Preprocessor took 106.58 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 95.3 MB in the beginning and 182.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
[2020-09-25 02:19:38,041 INFO L168 Benchmark]: RCFGBuilder took 248.37 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 171.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB.
[2020-09-25 02:19:38,042 INFO L168 Benchmark]: TraceAbstraction took 1929.02 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 171.3 MB in the beginning and 175.9 MB in the end (delta: -4.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB.
[2020-09-25 02:19:38,049 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 345.89 ms. Allocated memory is still 141.6 MB. Free memory was 104.4 MB in the beginning and 95.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 106.58 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 95.3 MB in the beginning and 182.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 248.37 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 171.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1929.02 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 171.3 MB in the beginning and 175.9 MB in the end (delta: -4.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 13]: Loop Invariant
Derived loop invariant: 1
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 4 SDslu, 46 SDs, 0 SdLazy, 18 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 28 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1095 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 4/5 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...