/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b3_o5.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 08:55:11,665 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 08:55:11,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 08:55:11,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 08:55:11,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 08:55:11,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 08:55:11,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 08:55:11,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 08:55:11,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 08:55:11,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 08:55:11,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 08:55:11,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 08:55:11,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 08:55:11,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 08:55:11,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 08:55:11,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 08:55:11,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 08:55:11,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 08:55:11,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 08:55:11,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 08:55:11,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 08:55:11,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 08:55:11,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 08:55:11,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 08:55:11,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 08:55:11,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 08:55:11,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 08:55:11,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 08:55:11,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 08:55:11,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 08:55:11,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 08:55:11,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 08:55:11,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 08:55:11,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 08:55:11,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 08:55:11,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 08:55:11,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 08:55:11,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 08:55:11,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 08:55:11,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 08:55:11,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 08:55:11,791 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 08:55:11,839 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 08:55:11,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 08:55:11,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 08:55:11,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 08:55:11,843 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 08:55:11,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 08:55:11,843 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 08:55:11,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 08:55:11,844 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 08:55:11,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 08:55:11,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 08:55:11,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 08:55:11,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 08:55:11,846 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 08:55:11,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 08:55:11,847 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 08:55:11,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 08:55:11,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 08:55:11,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 08:55:11,848 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 08:55:11,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 08:55:11,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 08:55:11,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 08:55:11,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 08:55:11,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 08:55:11,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 08:55:11,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 08:55:11,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 08:55:11,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 08:55:11,850 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true;
[2020-09-25 08:55:12,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 08:55:12,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 08:55:12,345 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 08:55:12,347 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 08:55:12,347 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 08:55:12,348 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b3_o5.c
[2020-09-25 08:55:12,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4201210f7/09918799e4d24160910ea321114e5685/FLAG227a5ef4b
[2020-09-25 08:55:12,992 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 08:55:12,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b3_o5.c
[2020-09-25 08:55:12,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4201210f7/09918799e4d24160910ea321114e5685/FLAG227a5ef4b
[2020-09-25 08:55:13,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4201210f7/09918799e4d24160910ea321114e5685
[2020-09-25 08:55:13,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 08:55:13,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 08:55:13,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 08:55:13,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 08:55:13,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 08:55:13,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:55:13" (1/1) ...
[2020-09-25 08:55:13,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b6e365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:13, skipping insertion in model container
[2020-09-25 08:55:13,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:55:13" (1/1) ...
[2020-09-25 08:55:13,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 08:55:13,396 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 08:55:13,627 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 08:55:13,637 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 08:55:13,661 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 08:55:13,676 INFO L208 MainTranslator]: Completed translation
[2020-09-25 08:55:13,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:13 WrapperNode
[2020-09-25 08:55:13,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 08:55:13,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 08:55:13,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 08:55:13,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 08:55:13,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:13" (1/1) ...
[2020-09-25 08:55:13,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:13" (1/1) ...
[2020-09-25 08:55:13,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:13" (1/1) ...
[2020-09-25 08:55:13,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:13" (1/1) ...
[2020-09-25 08:55:13,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:13" (1/1) ...
[2020-09-25 08:55:13,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:13" (1/1) ...
[2020-09-25 08:55:13,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:13" (1/1) ...
[2020-09-25 08:55:13,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 08:55:13,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 08:55:13,784 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 08:55:13,784 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 08:55:13,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:13" (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 08:55:13,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 08:55:13,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 08:55:13,884 INFO L138 BoogieDeclarations]: Found implementation of procedure id
[2020-09-25 08:55:13,884 INFO L138 BoogieDeclarations]: Found implementation of procedure id2
[2020-09-25 08:55:13,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 08:55:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2020-09-25 08:55:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 08:55:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure id
[2020-09-25 08:55:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure id2
[2020-09-25 08:55:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 08:55:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 08:55:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 08:55:14,135 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 08:55:14,136 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 08:55:14,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:55:14 BoogieIcfgContainer
[2020-09-25 08:55:14,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 08:55:14,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 08:55:14,155 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 08:55:14,159 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 08:55:14,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:55:13" (1/3) ...
[2020-09-25 08:55:14,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ed50f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:55:14, skipping insertion in model container
[2020-09-25 08:55:14,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:13" (2/3) ...
[2020-09-25 08:55:14,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ed50f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:55:14, skipping insertion in model container
[2020-09-25 08:55:14,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:55:14" (3/3) ...
[2020-09-25 08:55:14,179 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b3_o5.c
[2020-09-25 08:55:14,195 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 08:55:14,204 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 08:55:14,229 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 08:55:14,262 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 08:55:14,262 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 08:55:14,262 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 08:55:14,263 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 08:55:14,263 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 08:55:14,263 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 08:55:14,263 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 08:55:14,263 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 08:55:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states.
[2020-09-25 08:55:14,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-09-25 08:55:14,298 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:55:14,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:55:14,300 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:55:14,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:55:14,306 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times
[2020-09-25 08:55:14,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:55:14,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382961815]
[2020-09-25 08:55:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:55:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:14,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:14,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:14,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-25 08:55:14,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74
[2020-09-25 08:55:14,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:14,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 08:55:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-25 08:55:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 08:55:14,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-25 08:55:14,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:55:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:14,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:14,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:14,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:55:14,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 08:55:14,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:14,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:14,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:14,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-25 08:55:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:14,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:14,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:14,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 08:55:14,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:14,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37
[2020-09-25 08:55:14,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:14,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 08:55:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:14,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 08:55:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:14,693 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 08:55:14,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382961815]
[2020-09-25 08:55:14,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:55:14,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 08:55:14,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360700430]
[2020-09-25 08:55:14,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 08:55:14,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:55:14,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 08:55:14,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 08:55:14,726 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states.
[2020-09-25 08:55:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:55:14,829 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions.
[2020-09-25 08:55:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 08:55:14,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16
[2020-09-25 08:55:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:55:14,845 INFO L225 Difference]: With dead ends: 51
[2020-09-25 08:55:14,845 INFO L226 Difference]: Without dead ends: 36
[2020-09-25 08:55:14,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 08:55:14,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2020-09-25 08:55:14,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2020-09-25 08:55:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2020-09-25 08:55:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions.
[2020-09-25 08:55:14,903 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16
[2020-09-25 08:55:14,904 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:55:14,904 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions.
[2020-09-25 08:55:14,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 08:55:14,904 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions.
[2020-09-25 08:55:14,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-09-25 08:55:14,907 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:55:14,907 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, 1, 1]
[2020-09-25 08:55:14,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 08:55:14,908 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:55:14,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:55:14,908 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times
[2020-09-25 08:55:14,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:55:14,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052943009]
[2020-09-25 08:55:14,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:55:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:14,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:15,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:15,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:15,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36
[2020-09-25 08:55:15,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 08:55:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432
[2020-09-25 08:55:15,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:15,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 08:55:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23
[2020-09-25 08:55:15,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-25 08:55:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 08:55:15,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:55:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:15,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:15,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:15,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:55:15,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:15,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 08:55:15,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:15,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:15,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 08:55:15,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-25 08:55:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:15,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:15,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-09-25 08:55:15,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:15,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81
[2020-09-25 08:55:15,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:15,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 08:55:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-09-25 08:55:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:15,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:15,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:15,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:15,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 08:55:15,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:15,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-09-25 08:55:15,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:15,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 08:55:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:15,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 08:55:15,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:15,696 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 08:55:15,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052943009]
[2020-09-25 08:55:15,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:55:15,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-25 08:55:15,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167951627]
[2020-09-25 08:55:15,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-25 08:55:15,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:55:15,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-25 08:55:15,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-25 08:55:15,701 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states.
[2020-09-25 08:55:15,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:55:15,831 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions.
[2020-09-25 08:55:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-09-25 08:55:15,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25
[2020-09-25 08:55:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:55:15,834 INFO L225 Difference]: With dead ends: 66
[2020-09-25 08:55:15,834 INFO L226 Difference]: Without dead ends: 44
[2020-09-25 08:55:15,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2020-09-25 08:55:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2020-09-25 08:55:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42.
[2020-09-25 08:55:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-09-25 08:55:15,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions.
[2020-09-25 08:55:15,845 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25
[2020-09-25 08:55:15,845 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:55:15,845 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions.
[2020-09-25 08:55:15,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-25 08:55:15,845 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions.
[2020-09-25 08:55:15,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-09-25 08:55:15,847 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:55:15,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:55:15,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 08:55:15,848 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:55:15,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:55:15,848 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times
[2020-09-25 08:55:15,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:55:15,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772302649]
[2020-09-25 08:55:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:55:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:15,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:15,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:16,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:16,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:16,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:16,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-09-25 08:55:16,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-25 08:55:16,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013
[2020-09-25 08:55:16,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:16,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 08:55:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34
[2020-09-25 08:55:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-25 08:55:16,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:55:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:16,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:16,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:55:16,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:16,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 08:55:16,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:16,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:16,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-25 08:55:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:16,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:16,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:17,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:17,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:17,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-09-25 08:55:17,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 08:55:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532
[2020-09-25 08:55:17,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:17,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 08:55:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-09-25 08:55:17,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:17,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:17,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:17,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:17,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-09-25 08:55:17,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 08:55:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122
[2020-09-25 08:55:17,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:17,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 08:55:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-09-25 08:55:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:17,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:17,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:17,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:17,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 08:55:17,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:17,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 08:55:17,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:17,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:17,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:17,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:17,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:17,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-25 08:55:17,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772302649]
[2020-09-25 08:55:17,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:55:17,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-25 08:55:17,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478637359]
[2020-09-25 08:55:17,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-25 08:55:17,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:55:17,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-25 08:55:17,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-09-25 08:55:17,707 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 8 states.
[2020-09-25 08:55:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:55:17,770 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions.
[2020-09-25 08:55:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 08:55:17,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34
[2020-09-25 08:55:17,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:55:17,772 INFO L225 Difference]: With dead ends: 69
[2020-09-25 08:55:17,772 INFO L226 Difference]: Without dead ends: 50
[2020-09-25 08:55:17,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-09-25 08:55:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-09-25 08:55:17,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47.
[2020-09-25 08:55:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-09-25 08:55:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions.
[2020-09-25 08:55:17,783 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34
[2020-09-25 08:55:17,783 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:55:17,783 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions.
[2020-09-25 08:55:17,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-25 08:55:17,783 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions.
[2020-09-25 08:55:17,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-09-25 08:55:17,785 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:55:17,785 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:55:17,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 08:55:17,786 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:55:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:55:17,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1477652418, now seen corresponding path program 1 times
[2020-09-25 08:55:17,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:55:17,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423809982]
[2020-09-25 08:55:17,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:55:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:17,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:17,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:18,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:18,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-09-25 08:55:18,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 08:55:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319
[2020-09-25 08:55:18,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:18,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 08:55:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40
[2020-09-25 08:55:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 08:55:18,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:55:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:18,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:18,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:55:18,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:18,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 08:55:18,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:18,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:18,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:18,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-25 08:55:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:18,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:18,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:18,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-09-25 08:55:18,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 08:55:18,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256
[2020-09-25 08:55:18,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:18,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 08:55:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-09-25 08:55:18,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:18,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:18,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:18,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:18,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:18,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-09-25 08:55:18,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 08:55:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50
[2020-09-25 08:55:18,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:18,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:18,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:18,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:18,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:18,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 08:55:18,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:18,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 08:55:18,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:18,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:18,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:18,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:18,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:18,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-25 08:55:18,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423809982]
[2020-09-25 08:55:18,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:55:18,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 08:55:18,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418767651]
[2020-09-25 08:55:18,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 08:55:18,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:55:18,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 08:55:18,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 08:55:18,523 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states.
[2020-09-25 08:55:18,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:55:18,554 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions.
[2020-09-25 08:55:18,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 08:55:18,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34
[2020-09-25 08:55:18,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:55:18,556 INFO L225 Difference]: With dead ends: 54
[2020-09-25 08:55:18,559 INFO L226 Difference]: Without dead ends: 49
[2020-09-25 08:55:18,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 08:55:18,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2020-09-25 08:55:18,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47.
[2020-09-25 08:55:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-09-25 08:55:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions.
[2020-09-25 08:55:18,572 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34
[2020-09-25 08:55:18,572 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:55:18,572 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions.
[2020-09-25 08:55:18,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 08:55:18,576 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions.
[2020-09-25 08:55:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-09-25 08:55:18,580 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:55:18,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:55:18,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 08:55:18,582 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:55:18,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:55:18,583 INFO L82 PathProgramCache]: Analyzing trace with hash -2109914946, now seen corresponding path program 1 times
[2020-09-25 08:55:18,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:55:18,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629606705]
[2020-09-25 08:55:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:55:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:18,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:18,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:18,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:19,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:19,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-09-25 08:55:19,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 08:55:19,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406
[2020-09-25 08:55:19,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:19,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:19,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-25 08:55:19,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28
[2020-09-25 08:55:19,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-25 08:55:19,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:19,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:55:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:19,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:19,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:19,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:55:19,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:19,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 08:55:19,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:19,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:19,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:19,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-25 08:55:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:19,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:19,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-09-25 08:55:19,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156
[2020-09-25 08:55:19,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:19,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 08:55:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-09-25 08:55:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:19,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:19,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:19,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:19,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-09-25 08:55:19,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58
[2020-09-25 08:55:19,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:19,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 08:55:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-09-25 08:55:19,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:19,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:19,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 08:55:19,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:19,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-25 08:55:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:19,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 08:55:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 08:55:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:19,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-25 08:55:19,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629606705]
[2020-09-25 08:55:19,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 08:55:19,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-25 08:55:19,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170139774]
[2020-09-25 08:55:19,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 08:55:19,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:55:19,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 08:55:19,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2020-09-25 08:55:19,503 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states.
[2020-09-25 08:55:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:55:19,696 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions.
[2020-09-25 08:55:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-09-25 08:55:19,696 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34
[2020-09-25 08:55:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:55:19,698 INFO L225 Difference]: With dead ends: 90
[2020-09-25 08:55:19,698 INFO L226 Difference]: Without dead ends: 61
[2020-09-25 08:55:19,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240
[2020-09-25 08:55:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2020-09-25 08:55:19,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53.
[2020-09-25 08:55:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2020-09-25 08:55:19,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions.
[2020-09-25 08:55:19,706 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 34
[2020-09-25 08:55:19,707 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:55:19,707 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions.
[2020-09-25 08:55:19,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 08:55:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions.
[2020-09-25 08:55:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-09-25 08:55:19,709 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:55:19,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:55:19,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 08:55:19,709 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:55:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:55:19,710 INFO L82 PathProgramCache]: Analyzing trace with hash 830258234, now seen corresponding path program 1 times
[2020-09-25 08:55:19,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:55:19,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292650654]
[2020-09-25 08:55:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:55:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:19,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:19,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:20,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:20,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58
[2020-09-25 08:55:20,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 08:55:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489
[2020-09-25 08:55:20,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:20,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 08:55:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44
[2020-09-25 08:55:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-09-25 08:55:20,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 08:55:20,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:55:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:20,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:20,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:55:20,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 08:55:20,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:20,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:20,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-25 08:55:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:20,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:20,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:20,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:20,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:20,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44
[2020-09-25 08:55:20,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 08:55:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714
[2020-09-25 08:55:20,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:20,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:20,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-25 08:55:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-09-25 08:55:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:21,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:21,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:21,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:21,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-09-25 08:55:21,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139
[2020-09-25 08:55:21,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:21,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 08:55:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-09-25 08:55:21,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:21,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:21,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-09-25 08:55:21,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:21,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54
[2020-09-25 08:55:21,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:21,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 08:55:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-09-25 08:55:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:21,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:21,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:21,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 08:55:21,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:21,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-09-25 08:55:21,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:21,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 08:55:21,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:21,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 08:55:21,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-09-25 08:55:21,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292650654]
[2020-09-25 08:55:21,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 08:55:21,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-09-25 08:55:21,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575340089]
[2020-09-25 08:55:21,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-09-25 08:55:21,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:55:21,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-09-25 08:55:21,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182
[2020-09-25 08:55:21,481 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 14 states.
[2020-09-25 08:55:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:55:21,808 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions.
[2020-09-25 08:55:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-09-25 08:55:21,809 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43
[2020-09-25 08:55:21,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:55:21,811 INFO L225 Difference]: With dead ends: 104
[2020-09-25 08:55:21,811 INFO L226 Difference]: Without dead ends: 75
[2020-09-25 08:55:21,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420
[2020-09-25 08:55:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2020-09-25 08:55:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59.
[2020-09-25 08:55:21,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states.
[2020-09-25 08:55:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions.
[2020-09-25 08:55:21,830 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 43
[2020-09-25 08:55:21,830 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:55:21,830 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions.
[2020-09-25 08:55:21,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-09-25 08:55:21,830 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions.
[2020-09-25 08:55:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-09-25 08:55:21,834 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:55:21,835 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:55:21,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-25 08:55:21,835 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:55:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:55:21,840 INFO L82 PathProgramCache]: Analyzing trace with hash 444280, now seen corresponding path program 2 times
[2020-09-25 08:55:21,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:55:21,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008320695]
[2020-09-25 08:55:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:55:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:22,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:22,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:23,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:23,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:23,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69
[2020-09-25 08:55:23,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-25 08:55:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1734
[2020-09-25 08:55:23,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:23,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 08:55:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55
[2020-09-25 08:55:23,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-09-25 08:55:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:23,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:55:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:23,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:23,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:23,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:55:23,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:23,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-25 08:55:23,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:23,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:23,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 08:55:23,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-25 08:55:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:23,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:24,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:24,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:24,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:25,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:25,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55
[2020-09-25 08:55:25,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-25 08:55:25,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2017
[2020-09-25 08:55:25,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:25,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-25 08:55:25,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:25,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50
[2020-09-25 08:55:25,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:25,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:25,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:25,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:25,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:26,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:26,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44
[2020-09-25 08:55:26,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 08:55:26,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674
[2020-09-25 08:55:26,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:26,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:26,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 08:55:26,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:26,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-09-25 08:55:26,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:26,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:26,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:26,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-09-25 08:55:26,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 08:55:26,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206
[2020-09-25 08:55:26,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:26,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 08:55:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-09-25 08:55:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:26,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:26,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:26,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:26,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-09-25 08:55:26,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:26,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 08:55:26,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:26,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:26,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:26,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:26,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 08:55:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:55:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:55:26,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:55:26,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 08:55:26,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:55:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 08:55:26,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:55:26,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 08:55:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:55:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:55:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:55:26,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:55:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2020-09-25 08:55:26,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008320695]
[2020-09-25 08:55:26,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:55:26,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-09-25 08:55:26,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927581692]
[2020-09-25 08:55:26,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-09-25 08:55:26,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:55:26,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-09-25 08:55:26,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156
[2020-09-25 08:55:26,867 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 13 states.
[2020-09-25 08:55:27,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:55:27,177 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions.
[2020-09-25 08:55:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-09-25 08:55:27,178 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52
[2020-09-25 08:55:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:55:27,179 INFO L225 Difference]: With dead ends: 63
[2020-09-25 08:55:27,179 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 08:55:27,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380
[2020-09-25 08:55:27,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 08:55:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 08:55:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 08:55:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 08:55:27,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52
[2020-09-25 08:55:27,184 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:55:27,184 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 08:55:27,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-09-25 08:55:27,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 08:55:27,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 08:55:27,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-25 08:55:27,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 08:55:27,236 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 08:55:27,236 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 08:55:27,236 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed.
[2020-09-25 08:55:27,237 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed.
[2020-09-25 08:55:27,237 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed.
[2020-09-25 08:55:27,237 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true
[2020-09-25 08:55:27,237 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed.
[2020-09-25 08:55:27,237 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-09-25 08:55:27,237 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed.
[2020-09-25 08:55:27,238 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed.
[2020-09-25 08:55:27,238 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed.
[2020-09-25 08:55:27,238 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed.
[2020-09-25 08:55:27,238 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true
[2020-09-25 08:55:27,238 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 08:55:27,238 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 08:55:27,238 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 08:55:27,239 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 08:55:27,239 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed.
[2020-09-25 08:55:27,240 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true
[2020-09-25 08:55:27,240 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed.
[2020-09-25 08:55:27,241 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed.
[2020-09-25 08:55:27,241 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed.
[2020-09-25 08:55:27,243 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true
[2020-09-25 08:55:27,243 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed.
[2020-09-25 08:55:27,243 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed.
[2020-09-25 08:55:27,243 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed.
[2020-09-25 08:55:27,243 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed.
[2020-09-25 08:55:27,243 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed.
[2020-09-25 08:55:27,243 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed.
[2020-09-25 08:55:27,244 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true
[2020-09-25 08:55:27,244 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed.
[2020-09-25 08:55:27,244 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed.
[2020-09-25 08:55:27,244 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true
[2020-09-25 08:55:27,244 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed.
[2020-09-25 08:55:27,244 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-25 08:55:27,244 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed.
[2020-09-25 08:55:27,244 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed.
[2020-09-25 08:55:27,245 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed.
[2020-09-25 08:55:27,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:55:27 BoogieIcfgContainer
[2020-09-25 08:55:27,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 08:55:27,258 INFO L168 Benchmark]: Toolchain (without parser) took 13909.86 ms. Allocated memory was 140.0 MB in the beginning and 328.7 MB in the end (delta: 188.7 MB). Free memory was 102.0 MB in the beginning and 155.3 MB in the end (delta: -53.3 MB). Peak memory consumption was 135.5 MB. Max. memory is 7.1 GB.
[2020-09-25 08:55:27,268 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-25 08:55:27,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.52 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
[2020-09-25 08:55:27,271 INFO L168 Benchmark]: Boogie Preprocessor took 105.74 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 91.8 MB in the beginning and 181.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB.
[2020-09-25 08:55:27,272 INFO L168 Benchmark]: RCFGBuilder took 359.62 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 167.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
[2020-09-25 08:55:27,273 INFO L168 Benchmark]: TraceAbstraction took 13099.25 ms. Allocated memory was 201.9 MB in the beginning and 328.7 MB in the end (delta: 126.9 MB). Free memory was 166.5 MB in the beginning and 155.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 138.2 MB. Max. memory is 7.1 GB.
[2020-09-25 08:55:27,288 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 325.52 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 91.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 105.74 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 91.8 MB in the beginning and 181.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 359.62 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 167.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 13099.25 ms. Allocated memory was 201.9 MB in the beginning and 328.7 MB in the end (delta: 126.9 MB). Free memory was 166.5 MB in the beginning and 155.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 138.2 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.9s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 278 SDtfs, 46 SDslu, 1794 SDs, 0 SdLazy, 408 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=6, 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, 7 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 32085 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 41/51 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...