/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-lit/gj2007b.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 05:44:52,936 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 05:44:52,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 05:44:52,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 05:44:52,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 05:44:52,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 05:44:52,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 05:44:52,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 05:44:52,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 05:44:52,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 05:44:52,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 05:44:52,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 05:44:52,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 05:44:52,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 05:44:52,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 05:44:52,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 05:44:52,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 05:44:52,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 05:44:52,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 05:44:52,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 05:44:52,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 05:44:52,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 05:44:52,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 05:44:52,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 05:44:53,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 05:44:53,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 05:44:53,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 05:44:53,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 05:44:53,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 05:44:53,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 05:44:53,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 05:44:53,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 05:44:53,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 05:44:53,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 05:44:53,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 05:44:53,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 05:44:53,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 05:44:53,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 05:44:53,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 05:44:53,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 05:44:53,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 05:44:53,019 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 05:44:53,060 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 05:44:53,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 05:44:53,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 05:44:53,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 05:44:53,062 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 05:44:53,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 05:44:53,063 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 05:44:53,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 05:44:53,063 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 05:44:53,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 05:44:53,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 05:44:53,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 05:44:53,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 05:44:53,066 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 05:44:53,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 05:44:53,067 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 05:44:53,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 05:44:53,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 05:44:53,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 05:44:53,067 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 05:44:53,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 05:44:53,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 05:44:53,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 05:44:53,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 05:44:53,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 05:44:53,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 05:44:53,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 05:44:53,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 05:44:53,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 05:44:53,070 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;
[2020-09-25 05:44:53,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 05:44:53,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 05:44:53,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 05:44:53,593 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 05:44:53,593 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 05:44:53,595 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i
[2020-09-25 05:44:53,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5a11d213/74d8e5c01e8148aa958a8030c0cfd794/FLAG703689a5a
[2020-09-25 05:44:54,237 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 05:44:54,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gj2007b.i
[2020-09-25 05:44:54,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5a11d213/74d8e5c01e8148aa958a8030c0cfd794/FLAG703689a5a
[2020-09-25 05:44:54,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5a11d213/74d8e5c01e8148aa958a8030c0cfd794
[2020-09-25 05:44:54,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 05:44:54,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 05:44:54,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 05:44:54,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 05:44:54,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 05:44:54,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:44:54" (1/1) ...
[2020-09-25 05:44:54,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528baabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:54, skipping insertion in model container
[2020-09-25 05:44:54,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:44:54" (1/1) ...
[2020-09-25 05:44:54,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 05:44:54,648 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 05:44:54,894 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 05:44:54,900 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 05:44:54,920 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 05:44:54,939 INFO L208 MainTranslator]: Completed translation
[2020-09-25 05:44:54,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:54 WrapperNode
[2020-09-25 05:44:54,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 05:44:54,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 05:44:54,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 05:44:54,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 05:44:54,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:54" (1/1) ...
[2020-09-25 05:44:54,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:54" (1/1) ...
[2020-09-25 05:44:54,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:54" (1/1) ...
[2020-09-25 05:44:54,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:54" (1/1) ...
[2020-09-25 05:44:54,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:54" (1/1) ...
[2020-09-25 05:44:54,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:54" (1/1) ...
[2020-09-25 05:44:54,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:54" (1/1) ...
[2020-09-25 05:44:55,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 05:44:55,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 05:44:55,073 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 05:44:55,073 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 05:44:55,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:54" (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 05:44:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 05:44:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 05:44:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-25 05:44:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 05:44:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 05:44:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 05:44:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 05:44:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-25 05:44:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 05:44:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 05:44:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 05:44:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 05:44:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 05:44:55,380 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 05:44:55,381 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 05:44:55,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:44:55 BoogieIcfgContainer
[2020-09-25 05:44:55,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 05:44:55,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 05:44:55,391 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 05:44:55,396 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 05:44:55,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:44:54" (1/3) ...
[2020-09-25 05:44:55,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a186817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:44:55, skipping insertion in model container
[2020-09-25 05:44:55,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:54" (2/3) ...
[2020-09-25 05:44:55,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a186817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:44:55, skipping insertion in model container
[2020-09-25 05:44:55,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:44:55" (3/3) ...
[2020-09-25 05:44:55,402 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i
[2020-09-25 05:44:55,418 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 05:44:55,429 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 05:44:55,455 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 05:44:55,489 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 05:44:55,489 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 05:44:55,489 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 05:44:55,489 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 05:44:55,490 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 05:44:55,490 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 05:44:55,490 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 05:44:55,490 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 05:44:55,516 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states.
[2020-09-25 05:44:55,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-09-25 05:44:55,525 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:44:55,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 05:44:55,527 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:44:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:44:55,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1007675669, now seen corresponding path program 1 times
[2020-09-25 05:44:55,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:44:55,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765243926]
[2020-09-25 05:44:55,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:44:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:55,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:55,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:55,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-25 05:44:55,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 05:44:55,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132
[2020-09-25 05:44:55,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:55,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:55,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:44:55,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16
[2020-09-25 05:44:55,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:44:55,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 05:44:55,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:44:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:55,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:55,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:55,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 05:44:55,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:44:55,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 05:44:55,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:55,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:44:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:44:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:44:55,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:55,840 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 05:44:55,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765243926]
[2020-09-25 05:44:55,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 05:44:55,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-09-25 05:44:55,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324591215]
[2020-09-25 05:44:55,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-09-25 05:44:55,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:44:55,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-09-25 05:44:55,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-25 05:44:55,877 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states.
[2020-09-25 05:44:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:44:55,904 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions.
[2020-09-25 05:44:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-09-25 05:44:55,905 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14
[2020-09-25 05:44:55,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:44:55,917 INFO L225 Difference]: With dead ends: 42
[2020-09-25 05:44:55,917 INFO L226 Difference]: Without dead ends: 24
[2020-09-25 05:44:55,922 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 05:44:55,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2020-09-25 05:44:55,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2020-09-25 05:44:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2020-09-25 05:44:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions.
[2020-09-25 05:44:55,969 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14
[2020-09-25 05:44:55,970 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:44:55,970 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions.
[2020-09-25 05:44:55,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-09-25 05:44:55,970 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions.
[2020-09-25 05:44:55,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-09-25 05:44:55,971 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:44:55,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 05:44:55,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 05:44:55,972 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:44:55,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:44:55,973 INFO L82 PathProgramCache]: Analyzing trace with hash 993822854, now seen corresponding path program 1 times
[2020-09-25 05:44:55,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:44:55,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157793293]
[2020-09-25 05:44:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:44:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:56,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:56,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:56,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-25 05:44:56,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 05:44:56,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173
[2020-09-25 05:44:56,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:56,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 05:44:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-25 05:44:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 05:44:56,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:56,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:44:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:56,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:56,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:56,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 05:44:56,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:44:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 05:44:56,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:56,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:56,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:44:56,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:44:56,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:44:56,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:56,280 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 05:44:56,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157793293]
[2020-09-25 05:44:56,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 05:44:56,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 05:44:56,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996811071]
[2020-09-25 05:44:56,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 05:44:56,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:44:56,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 05:44:56,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 05:44:56,285 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states.
[2020-09-25 05:44:56,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:44:56,397 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions.
[2020-09-25 05:44:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 05:44:56,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14
[2020-09-25 05:44:56,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:44:56,399 INFO L225 Difference]: With dead ends: 39
[2020-09-25 05:44:56,400 INFO L226 Difference]: Without dead ends: 31
[2020-09-25 05:44:56,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-25 05:44:56,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2020-09-25 05:44:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25.
[2020-09-25 05:44:56,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2020-09-25 05:44:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions.
[2020-09-25 05:44:56,409 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 14
[2020-09-25 05:44:56,409 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:44:56,410 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions.
[2020-09-25 05:44:56,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 05:44:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions.
[2020-09-25 05:44:56,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-09-25 05:44:56,411 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:44:56,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 05:44:56,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 05:44:56,412 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:44:56,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:44:56,412 INFO L82 PathProgramCache]: Analyzing trace with hash -224155731, now seen corresponding path program 1 times
[2020-09-25 05:44:56,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:44:56,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668350938]
[2020-09-25 05:44:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:44:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:56,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:56,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:56,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28
[2020-09-25 05:44:56,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:44:56,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61
[2020-09-25 05:44:56,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:56,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:56,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 05:44:56,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 05:44:56,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-09-25 05:44:56,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:56,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:44:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:56,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:56,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:56,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 05:44:56,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:44:56,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 05:44:56,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:56,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:44:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:44:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:44:56,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:56,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-25 05:44:56,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668350938]
[2020-09-25 05:44:56,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 05:44:56,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 05:44:56,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115221058]
[2020-09-25 05:44:56,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 05:44:56,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:44:56,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 05:44:56,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 05:44:56,552 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states.
[2020-09-25 05:44:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:44:56,616 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions.
[2020-09-25 05:44:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-09-25 05:44:56,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19
[2020-09-25 05:44:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:44:56,618 INFO L225 Difference]: With dead ends: 40
[2020-09-25 05:44:56,618 INFO L226 Difference]: Without dead ends: 38
[2020-09-25 05:44:56,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 05:44:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2020-09-25 05:44:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35.
[2020-09-25 05:44:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2020-09-25 05:44:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions.
[2020-09-25 05:44:56,628 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19
[2020-09-25 05:44:56,629 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:44:56,629 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions.
[2020-09-25 05:44:56,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 05:44:56,629 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions.
[2020-09-25 05:44:56,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-09-25 05:44:56,631 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:44:56,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 05:44:56,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 05:44:56,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:44:56,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:44:56,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2096508511, now seen corresponding path program 1 times
[2020-09-25 05:44:56,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:44:56,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971628692]
[2020-09-25 05:44:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:44:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:56,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:56,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29
[2020-09-25 05:44:56,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 05:44:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200
[2020-09-25 05:44:56,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:56,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 05:44:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-25 05:44:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-09-25 05:44:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:44:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:56,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:56,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:56,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 05:44:56,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:44:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 05:44:56,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:56,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:44:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:44:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:44:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 05:44:56,932 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 05:44:56,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971628692]
[2020-09-25 05:44:56,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 05:44:56,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-09-25 05:44:56,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129392223]
[2020-09-25 05:44:56,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 05:44:56,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:44:56,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 05:44:56,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 05:44:56,940 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states.
[2020-09-25 05:44:57,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:44:57,066 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions.
[2020-09-25 05:44:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-09-25 05:44:57,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20
[2020-09-25 05:44:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:44:57,071 INFO L225 Difference]: With dead ends: 57
[2020-09-25 05:44:57,073 INFO L226 Difference]: Without dead ends: 44
[2020-09-25 05:44:57,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-25 05:44:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2020-09-25 05:44:57,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34.
[2020-09-25 05:44:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2020-09-25 05:44:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions.
[2020-09-25 05:44:57,089 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20
[2020-09-25 05:44:57,089 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:44:57,089 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions.
[2020-09-25 05:44:57,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 05:44:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions.
[2020-09-25 05:44:57,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-09-25 05:44:57,090 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:44:57,092 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]
[2020-09-25 05:44:57,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 05:44:57,092 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:44:57,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:44:57,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1151527866, now seen corresponding path program 1 times
[2020-09-25 05:44:57,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:44:57,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190856330]
[2020-09-25 05:44:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:44:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:57,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:57,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:57,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:57,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-25 05:44:57,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 05:44:57,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310
[2020-09-25 05:44:57,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:57,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 05:44:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-25 05:44:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22
[2020-09-25 05:44:57,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:57,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:44:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:57,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:57,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 05:44:57,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:44:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 05:44:57,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:57,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:44:57,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:44:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:44:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 05:44:57,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190856330]
[2020-09-25 05:44:57,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 05:44:57,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-25 05:44:57,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581459851]
[2020-09-25 05:44:57,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 05:44:57,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:44:57,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 05:44:57,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-09-25 05:44:57,499 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states.
[2020-09-25 05:44:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:44:57,594 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions.
[2020-09-25 05:44:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-09-25 05:44:57,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25
[2020-09-25 05:44:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:44:57,595 INFO L225 Difference]: With dead ends: 44
[2020-09-25 05:44:57,596 INFO L226 Difference]: Without dead ends: 40
[2020-09-25 05:44:57,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2020-09-25 05:44:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2020-09-25 05:44:57,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36.
[2020-09-25 05:44:57,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2020-09-25 05:44:57,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions.
[2020-09-25 05:44:57,603 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25
[2020-09-25 05:44:57,604 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:44:57,604 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions.
[2020-09-25 05:44:57,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 05:44:57,604 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions.
[2020-09-25 05:44:57,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-09-25 05:44:57,605 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:44:57,605 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 05:44:57,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 05:44:57,606 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:44:57,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:44:57,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2086501752, now seen corresponding path program 1 times
[2020-09-25 05:44:57,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:44:57,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895607446]
[2020-09-25 05:44:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:44:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:57,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:57,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:57,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-09-25 05:44:57,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:44:57,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91
[2020-09-25 05:44:57,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:57,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 05:44:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-09-25 05:44:57,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-09-25 05:44:57,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:57,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:44:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:57,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:57,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 05:44:57,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:44:57,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 05:44:57,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:57,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:44:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:44:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:44:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-25 05:44:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:57,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:57,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:57,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 05:44:57,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:44:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-09-25 05:44:57,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:57,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 05:44:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:44:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 05:44:57,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-25 05:44:57,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895607446]
[2020-09-25 05:44:57,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 05:44:57,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 05:44:57,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862459175]
[2020-09-25 05:44:57,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 05:44:57,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:44:57,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 05:44:57,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 05:44:57,805 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 6 states.
[2020-09-25 05:44:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:44:57,875 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions.
[2020-09-25 05:44:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-09-25 05:44:57,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30
[2020-09-25 05:44:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:44:57,876 INFO L225 Difference]: With dead ends: 43
[2020-09-25 05:44:57,877 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 05:44:57,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-25 05:44:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 05:44:57,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 05:44:57,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 05:44:57,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 05:44:57,878 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30
[2020-09-25 05:44:57,879 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:44:57,879 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 05:44:57,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 05:44:57,879 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 05:44:57,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 05:44:57,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-25 05:44:57,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 05:44:58,079 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 05:44:58,079 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 05:44:58,080 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 05:44:58,080 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 05:44:58,080 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 05:44:58,080 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 05:44:58,080 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed.
[2020-09-25 05:44:58,080 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed.
[2020-09-25 05:44:58,081 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed.
[2020-09-25 05:44:58,081 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed.
[2020-09-25 05:44:58,081 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed.
[2020-09-25 05:44:58,081 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed.
[2020-09-25 05:44:58,081 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 0))) (or (and .cse0 (<= main_~x~0 0)) (= main_~m~0 0) (and (<= 1 main_~x~0) (<= 1 main_~m~0) (or .cse0 (< main_~m~0 main_~n~0)))))
[2020-09-25 05:44:58,082 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed.
[2020-09-25 05:44:58,082 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-09-25 05:44:58,083 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= main_~m~0 0)) (.cse1 (<= 1 main_~x~0))) (or (and .cse0 (= main_~x~0 0)) (and .cse1 .cse0) (and .cse1 (<= 1 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)))))
[2020-09-25 05:44:58,083 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 0))) (or (and .cse0 (<= main_~x~0 0)) (= main_~m~0 0) (and (<= 1 main_~x~0) (<= 1 main_~m~0) (or .cse0 (< main_~m~0 main_~n~0)))))
[2020-09-25 05:44:58,083 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed.
[2020-09-25 05:44:58,083 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true
[2020-09-25 05:44:58,083 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed.
[2020-09-25 05:44:58,084 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed.
[2020-09-25 05:44:58,084 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 20) no Hoare annotation was computed.
[2020-09-25 05:44:58,084 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-25 05:44:58,084 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed.
[2020-09-25 05:44:58,084 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed.
[2020-09-25 05:44:58,084 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed.
[2020-09-25 05:44:58,085 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed.
[2020-09-25 05:44:58,086 INFO L268 CegarLoopResult]: For program point L18-5(lines 18 20) no Hoare annotation was computed.
[2020-09-25 05:44:58,086 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true
[2020-09-25 05:44:58,087 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed.
[2020-09-25 05:44:58,087 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-25 05:44:58,087 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed.
[2020-09-25 05:44:58,087 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed.
[2020-09-25 05:44:58,088 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed.
[2020-09-25 05:44:58,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:44:58 BoogieIcfgContainer
[2020-09-25 05:44:58,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 05:44:58,151 INFO L168 Benchmark]: Toolchain (without parser) took 3556.54 ms. Allocated memory was 146.8 MB in the beginning and 234.9 MB in the end (delta: 88.1 MB). Free memory was 103.5 MB in the beginning and 107.0 MB in the end (delta: -3.6 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB.
[2020-09-25 05:44:58,152 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 05:44:58,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.96 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
[2020-09-25 05:44:58,155 INFO L168 Benchmark]: Boogie Preprocessor took 131.35 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.0 MB in the beginning and 182.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB.
[2020-09-25 05:44:58,156 INFO L168 Benchmark]: RCFGBuilder took 316.27 ms. Allocated memory is still 202.9 MB. Free memory was 182.8 MB in the beginning and 168.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB.
[2020-09-25 05:44:58,157 INFO L168 Benchmark]: TraceAbstraction took 2757.25 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 168.1 MB in the beginning and 107.0 MB in the end (delta: 61.1 MB). Peak memory consumption was 93.1 MB. Max. memory is 7.1 GB.
[2020-09-25 05:44:58,161 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.27 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 341.96 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 131.35 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 93.0 MB in the beginning and 182.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 316.27 ms. Allocated memory is still 202.9 MB. Free memory was 182.8 MB in the beginning and 168.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2757.25 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 168.1 MB in the beginning and 107.0 MB in the end (delta: 61.1 MB). Peak memory consumption was 93.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 8]: 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: 17]: Loop Invariant
Derived loop invariant: ((m == 0 && x == 0) || (1 <= x && m == 0)) || ((1 <= x && 1 <= m) && (n <= 0 || m < n))
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 151 SDtfs, 74 SDslu, 381 SDs, 0 SdLazy, 165 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=5, 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, 6 MinimizatonAttempts, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 26 NumberOfFragments, 84 HoareAnnotationTreeSize, 16 FomulaSimplifications, 37 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 5896 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 12/16 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...