/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=0.6 --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-invariants/eq2.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 06:54:35,729 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 06:54:35,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 06:54:35,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 06:54:35,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 06:54:35,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 06:54:35,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 06:54:35,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 06:54:35,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 06:54:35,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 06:54:35,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 06:54:35,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 06:54:35,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 06:54:35,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 06:54:35,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 06:54:35,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 06:54:35,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 06:54:35,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 06:54:35,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 06:54:35,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 06:54:35,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 06:54:35,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 06:54:35,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 06:54:35,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 06:54:35,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 06:54:35,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 06:54:35,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 06:54:35,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 06:54:35,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 06:54:35,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 06:54:35,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 06:54:35,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 06:54:35,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 06:54:35,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 06:54:35,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 06:54:35,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 06:54:35,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 06:54:35,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 06:54:35,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 06:54:35,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 06:54:35,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 06:54:35,821 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 06:54:35,874 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 06:54:35,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 06:54:35,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 06:54:35,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 06:54:35,877 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 06:54:35,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 06:54:35,878 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 06:54:35,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 06:54:35,878 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 06:54:35,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 06:54:35,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 06:54:35,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 06:54:35,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 06:54:35,881 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 06:54:35,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 06:54:35,881 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 06:54:35,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 06:54:35,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 06:54:35,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 06:54:35,882 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 06:54:35,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 06:54:35,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 06:54:35,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 06:54:35,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 06:54:35,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 06:54:35,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 06:54:35,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 06:54:35,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 06:54:35,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 06:54:35,884 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true;
[2020-09-25 06:54:36,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 06:54:36,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 06:54:36,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 06:54:36,439 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 06:54:36,440 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 06:54:36,441 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq2.c
[2020-09-25 06:54:36,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ab3fa1c4/986b4cb24c8c41d3a5d6e47b31c58a8b/FLAGa461a21d3
[2020-09-25 06:54:37,070 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 06:54:37,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invariants/eq2.c
[2020-09-25 06:54:37,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ab3fa1c4/986b4cb24c8c41d3a5d6e47b31c58a8b/FLAGa461a21d3
[2020-09-25 06:54:37,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ab3fa1c4/986b4cb24c8c41d3a5d6e47b31c58a8b
[2020-09-25 06:54:37,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 06:54:37,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 06:54:37,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 06:54:37,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 06:54:37,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 06:54:37,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:54:37" (1/1) ...
[2020-09-25 06:54:37,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656101fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:37, skipping insertion in model container
[2020-09-25 06:54:37,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:54:37" (1/1) ...
[2020-09-25 06:54:37,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 06:54:37,500 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 06:54:37,763 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 06:54:37,771 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 06:54:37,796 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 06:54:37,816 INFO L208 MainTranslator]: Completed translation
[2020-09-25 06:54:37,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:37 WrapperNode
[2020-09-25 06:54:37,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 06:54:37,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 06:54:37,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 06:54:37,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 06:54:37,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:37" (1/1) ...
[2020-09-25 06:54:37,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:37" (1/1) ...
[2020-09-25 06:54:37,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:37" (1/1) ...
[2020-09-25 06:54:37,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:37" (1/1) ...
[2020-09-25 06:54:37,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:37" (1/1) ...
[2020-09-25 06:54:37,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:37" (1/1) ...
[2020-09-25 06:54:37,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:37" (1/1) ...
[2020-09-25 06:54:37,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 06:54:37,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 06:54:37,932 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 06:54:37,932 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 06:54:37,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:37" (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 06:54:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 06:54:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 06:54:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 06:54:38,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 06:54:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 06:54:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2020-09-25 06:54:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 06:54:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 06:54:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 06:54:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 06:54:38,210 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 06:54:38,210 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 06:54:38,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:54:38 BoogieIcfgContainer
[2020-09-25 06:54:38,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 06:54:38,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 06:54:38,217 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 06:54:38,221 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 06:54:38,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:54:37" (1/3) ...
[2020-09-25 06:54:38,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28398747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:54:38, skipping insertion in model container
[2020-09-25 06:54:38,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:54:37" (2/3) ...
[2020-09-25 06:54:38,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28398747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:54:38, skipping insertion in model container
[2020-09-25 06:54:38,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:54:38" (3/3) ...
[2020-09-25 06:54:38,226 INFO L109 eAbstractionObserver]: Analyzing ICFG eq2.c
[2020-09-25 06:54:38,240 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 06:54:38,253 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 06:54:38,280 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 06:54:38,318 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 06:54:38,318 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 06:54:38,318 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 06:54:38,318 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 06:54:38,319 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 06:54:38,319 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 06:54:38,319 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 06:54:38,319 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 06:54:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states.
[2020-09-25 06:54:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-09-25 06:54:38,353 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 06:54:38,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 06:54:38,355 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 06:54:38,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 06:54:38,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1881134399, now seen corresponding path program 1 times
[2020-09-25 06:54:38,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 06:54:38,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867026054]
[2020-09-25 06:54:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 06:54:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:54:38,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:54:38,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:54:38,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:54:38,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-25 06:54:38,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 06:54:38,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337
[2020-09-25 06:54:38,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:54:38,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:54:38,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 06:54:38,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16
[2020-09-25 06:54:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 06:54:38,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-25 06:54:38,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 06:54:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:54:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:54:38,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:54:38,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 06:54:38,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:54:38,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 06:54:38,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:54:38,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:54:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 06:54:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 06:54:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 06:54:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:54:38,871 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 06:54:38,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867026054]
[2020-09-25 06:54:38,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 06:54:38,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-09-25 06:54:38,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730578056]
[2020-09-25 06:54:38,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-09-25 06:54:38,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 06:54:38,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-09-25 06:54:38,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-25 06:54:38,906 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states.
[2020-09-25 06:54:38,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 06:54:38,935 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions.
[2020-09-25 06:54:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-09-25 06:54:38,937 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14
[2020-09-25 06:54:38,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 06:54:38,946 INFO L225 Difference]: With dead ends: 42
[2020-09-25 06:54:38,946 INFO L226 Difference]: Without dead ends: 23
[2020-09-25 06:54:38,950 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 06:54:38,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2020-09-25 06:54:38,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2020-09-25 06:54:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states.
[2020-09-25 06:54:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions.
[2020-09-25 06:54:38,994 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14
[2020-09-25 06:54:38,994 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 06:54:38,994 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions.
[2020-09-25 06:54:38,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-09-25 06:54:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions.
[2020-09-25 06:54:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-09-25 06:54:38,996 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 06:54:38,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 06:54:38,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 06:54:38,997 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 06:54:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 06:54:38,997 INFO L82 PathProgramCache]: Analyzing trace with hash 2108856515, now seen corresponding path program 1 times
[2020-09-25 06:54:38,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 06:54:38,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935946741]
[2020-09-25 06:54:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 06:54:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:54:39,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:54:39,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:54:39,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-25 06:54:39,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:54:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88
[2020-09-25 06:54:39,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:54:39,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:54:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 06:54:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-25 06:54:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 06:54:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:54:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 06:54:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:54:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:54:39,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:54:39,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 06:54:39,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:54:39,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 06:54:39,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:54:39,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:54:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 06:54:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 06:54:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 06:54:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:54:39,422 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 06:54:39,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935946741]
[2020-09-25 06:54:39,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 06:54:39,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-25 06:54:39,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381998390]
[2020-09-25 06:54:39,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 06:54:39,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 06:54:39,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 06:54:39,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-25 06:54:39,428 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states.
[2020-09-25 06:54:39,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 06:54:39,614 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions.
[2020-09-25 06:54:39,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-09-25 06:54:39,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15
[2020-09-25 06:54:39,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 06:54:39,618 INFO L225 Difference]: With dead ends: 33
[2020-09-25 06:54:39,618 INFO L226 Difference]: Without dead ends: 27
[2020-09-25 06:54:39,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2020-09-25 06:54:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2020-09-25 06:54:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24.
[2020-09-25 06:54:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2020-09-25 06:54:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions.
[2020-09-25 06:54:39,636 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15
[2020-09-25 06:54:39,636 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 06:54:39,636 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions.
[2020-09-25 06:54:39,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 06:54:39,637 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions.
[2020-09-25 06:54:39,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-09-25 06:54:39,638 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 06:54:39,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 06:54:39,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 06:54:39,639 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 06:54:39,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 06:54:39,640 INFO L82 PathProgramCache]: Analyzing trace with hash -134436921, now seen corresponding path program 1 times
[2020-09-25 06:54:39,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 06:54:39,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356097683]
[2020-09-25 06:54:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 06:54:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:54:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:54:40,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:54:40,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32
[2020-09-25 06:54:40,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:54:40,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356
[2020-09-25 06:54:40,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:54:40,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:54:40,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-25 06:54:40,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-25 06:54:40,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-25 06:54:40,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:54:40,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 06:54:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 06:54:40,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 06:54:40,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 06:54:40,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 06:54:40,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 06:54:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 06:54:40,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 06:54:40,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6
[2020-09-25 06:54:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 06:54:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 06:54:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 06:54:40,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 06:54:40,301 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 06:54:40,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356097683]
[2020-09-25 06:54:40,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 06:54:40,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-25 06:54:40,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574398726]
[2020-09-25 06:54:40,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 06:54:40,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 06:54:40,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 06:54:40,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2020-09-25 06:54:40,304 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 11 states.
[2020-09-25 06:54:40,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 06:54:40,587 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions.
[2020-09-25 06:54:40,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-09-25 06:54:40,588 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23
[2020-09-25 06:54:40,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 06:54:40,589 INFO L225 Difference]: With dead ends: 27
[2020-09-25 06:54:40,589 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 06:54:40,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420
[2020-09-25 06:54:40,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 06:54:40,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 06:54:40,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 06:54:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 06:54:40,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23
[2020-09-25 06:54:40,591 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 06:54:40,592 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 06:54:40,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 06:54:40,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 06:54:40,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 06:54:40,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 06:54:40,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 06:54:40,684 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 06:54:40,685 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 06:54:40,685 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 06:54:40,685 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 06:54:40,685 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 06:54:40,685 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 06:54:40,686 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 20) no Hoare annotation was computed.
[2020-09-25 06:54:40,686 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-09-25 06:54:40,686 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed.
[2020-09-25 06:54:40,686 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed.
[2020-09-25 06:54:40,686 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed.
[2020-09-25 06:54:40,686 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 20) no Hoare annotation was computed.
[2020-09-25 06:54:40,687 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed.
[2020-09-25 06:54:40,687 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 20) the Hoare annotation is: true
[2020-09-25 06:54:40,687 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed.
[2020-09-25 06:54:40,687 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-25 06:54:40,687 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed.
[2020-09-25 06:54:40,687 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed.
[2020-09-25 06:54:40,688 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed.
[2020-09-25 06:54:40,688 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed.
[2020-09-25 06:54:40,688 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed.
[2020-09-25 06:54:40,688 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed.
[2020-09-25 06:54:40,688 INFO L264 CegarLoopResult]: At program point L14-4(lines 14 17) the Hoare annotation is: (and (<= main_~y~0 main_~z~0) (<= main_~x~0 main_~w~0) (<= main_~z~0 main_~y~0) (<= main_~w~0 main_~x~0))
[2020-09-25 06:54:40,689 INFO L264 CegarLoopResult]: At program point L14-5(lines 14 17) the Hoare annotation is: (let ((.cse3 (<= main_~x~0 main_~w~0)) (.cse4 (<= main_~z~0 main_~y~0)) (.cse5 (<= main_~w~0 main_~x~0))) (or (let ((.cse2 (+ main_~y~0 (* 4294967296 (div main_~z~0 4294967296)))) (.cse1 (* 4294967296 (div main_~y~0 4294967296))) (.cse0 (+ main_~x~0 1))) (and (<= main_~y~0 .cse0) (<= (+ main_~z~0 .cse1) .cse2) (< .cse2 (+ main_~z~0 .cse1 1)) .cse3 (<= .cse0 main_~y~0) .cse4 .cse5)) (and (<= main_~y~0 main_~z~0) .cse3 .cse4 .cse5)))
[2020-09-25 06:54:40,689 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true
[2020-09-25 06:54:40,689 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed.
[2020-09-25 06:54:40,689 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed.
[2020-09-25 06:54:40,689 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed.
[2020-09-25 06:54:40,690 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed.
[2020-09-25 06:54:40,690 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed.
[2020-09-25 06:54:40,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:54:40 BoogieIcfgContainer
[2020-09-25 06:54:40,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 06:54:40,716 INFO L168 Benchmark]: Toolchain (without parser) took 3272.88 ms. Allocated memory was 139.5 MB in the beginning and 233.3 MB in the end (delta: 93.8 MB). Free memory was 102.3 MB in the beginning and 128.7 MB in the end (delta: -26.4 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB.
[2020-09-25 06:54:40,718 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-25 06:54:40,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.89 ms. Allocated memory is still 139.5 MB. Free memory was 101.6 MB in the beginning and 92.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
[2020-09-25 06:54:40,720 INFO L168 Benchmark]: Boogie Preprocessor took 112.28 ms. Allocated memory was 139.5 MB in the beginning and 199.2 MB in the end (delta: 59.8 MB). Free memory was 92.2 MB in the beginning and 179.2 MB in the end (delta: -87.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
[2020-09-25 06:54:40,721 INFO L168 Benchmark]: RCFGBuilder took 284.37 ms. Allocated memory is still 199.2 MB. Free memory was 179.2 MB in the beginning and 166.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB.
[2020-09-25 06:54:40,722 INFO L168 Benchmark]: TraceAbstraction took 2495.47 ms. Allocated memory was 199.2 MB in the beginning and 233.3 MB in the end (delta: 34.1 MB). Free memory was 166.0 MB in the beginning and 128.7 MB in the end (delta: 37.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB.
[2020-09-25 06:54:40,727 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.30 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 370.89 ms. Allocated memory is still 139.5 MB. Free memory was 101.6 MB in the beginning and 92.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 112.28 ms. Allocated memory was 139.5 MB in the beginning and 199.2 MB in the end (delta: 59.8 MB). Free memory was 92.2 MB in the beginning and 179.2 MB in the end (delta: -87.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 284.37 ms. Allocated memory is still 199.2 MB. Free memory was 179.2 MB in the beginning and 166.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2495.47 ms. Allocated memory was 199.2 MB in the beginning and 233.3 MB in the end (delta: 34.1 MB). Free memory was 166.0 MB in the beginning and 128.7 MB in the end (delta: 37.4 MB). Peak memory consumption was 71.4 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: 14]: Loop Invariant
Derived loop invariant: ((y <= z && x <= w) && z <= y) && w <= x
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 56 SDslu, 180 SDs, 0 SdLazy, 78 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 83 HoareAnnotationTreeSize, 9 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 7221 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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...