/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/half.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 08:03:04,587 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 08:03:04,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 08:03:04,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 08:03:04,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 08:03:04,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 08:03:04,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 08:03:04,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 08:03:04,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 08:03:04,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 08:03:04,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 08:03:04,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 08:03:04,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 08:03:04,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 08:03:04,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 08:03:04,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 08:03:04,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 08:03:04,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 08:03:04,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 08:03:04,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 08:03:04,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 08:03:04,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 08:03:04,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 08:03:04,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 08:03:04,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 08:03:04,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 08:03:04,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 08:03:04,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 08:03:04,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 08:03:04,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 08:03:04,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 08:03:04,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 08:03:04,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 08:03:04,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 08:03:04,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 08:03:04,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 08:03:04,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 08:03:04,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 08:03:04,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 08:03:04,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 08:03:04,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 08:03:04,674 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 08:03:04,728 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 08:03:04,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 08:03:04,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 08:03:04,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 08:03:04,731 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 08:03:04,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 08:03:04,731 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 08:03:04,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 08:03:04,732 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 08:03:04,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 08:03:04,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 08:03:04,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 08:03:04,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 08:03:04,734 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 08:03:04,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 08:03:04,735 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 08:03:04,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 08:03:04,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 08:03:04,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 08:03:04,735 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 08:03:04,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 08:03:04,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 08:03:04,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 08:03:04,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 08:03:04,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 08:03:04,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 08:03:04,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 08:03:04,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 08:03:04,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 08:03:04,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true;
[2020-09-25 08:03:05,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 08:03:05,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 08:03:05,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 08:03:05,209 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 08:03:05,210 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 08:03:05,211 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i
[2020-09-25 08:03:05,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16c3e48dc/191d9e917499474fa9921c097bb5e397/FLAG795295040
[2020-09-25 08:03:05,807 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 08:03:05,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/half.i
[2020-09-25 08:03:05,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16c3e48dc/191d9e917499474fa9921c097bb5e397/FLAG795295040
[2020-09-25 08:03:06,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16c3e48dc/191d9e917499474fa9921c097bb5e397
[2020-09-25 08:03:06,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 08:03:06,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 08:03:06,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 08:03:06,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 08:03:06,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 08:03:06,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:03:06" (1/1) ...
[2020-09-25 08:03:06,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4649669f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06, skipping insertion in model container
[2020-09-25 08:03:06,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:03:06" (1/1) ...
[2020-09-25 08:03:06,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 08:03:06,256 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 08:03:06,481 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 08:03:06,486 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 08:03:06,502 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 08:03:06,517 INFO L208 MainTranslator]: Completed translation
[2020-09-25 08:03:06,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06 WrapperNode
[2020-09-25 08:03:06,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 08:03:06,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 08:03:06,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 08:03:06,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 08:03:06,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ...
[2020-09-25 08:03:06,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ...
[2020-09-25 08:03:06,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ...
[2020-09-25 08:03:06,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ...
[2020-09-25 08:03:06,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ...
[2020-09-25 08:03:06,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ...
[2020-09-25 08:03:06,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (1/1) ...
[2020-09-25 08:03:06,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 08:03:06,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 08:03:06,626 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 08:03:06,626 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 08:03:06,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (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 08:03:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 08:03:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 08:03:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-25 08:03:06,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 08:03:06,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 08:03:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 08:03:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 08:03:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-25 08:03:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 08:03:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 08:03:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 08:03:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 08:03:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 08:03:06,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 08:03:06,926 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 08:03:06,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:03:06 BoogieIcfgContainer
[2020-09-25 08:03:06,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 08:03:06,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 08:03:06,935 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 08:03:06,939 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 08:03:06,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:03:06" (1/3) ...
[2020-09-25 08:03:06,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a98148c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:03:06, skipping insertion in model container
[2020-09-25 08:03:06,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:03:06" (2/3) ...
[2020-09-25 08:03:06,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a98148c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:03:06, skipping insertion in model container
[2020-09-25 08:03:06,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:03:06" (3/3) ...
[2020-09-25 08:03:06,944 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i
[2020-09-25 08:03:06,958 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 08:03:06,974 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 08:03:07,028 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 08:03:07,072 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 08:03:07,073 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 08:03:07,073 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 08:03:07,073 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 08:03:07,073 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 08:03:07,073 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 08:03:07,073 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 08:03:07,073 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 08:03:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states.
[2020-09-25 08:03:07,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-09-25 08:03:07,101 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:03:07,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:03:07,103 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:03:07,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:03:07,109 INFO L82 PathProgramCache]: Analyzing trace with hash 789700725, now seen corresponding path program 1 times
[2020-09-25 08:03:07,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:03:07,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877395932]
[2020-09-25 08:03:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:03:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:07,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:07,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:07,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-25 08:03:07,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:03:07,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85
[2020-09-25 08:03:07,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:07,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:03:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-25 08:03:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:03:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-25 08:03:07,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:03:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:07,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:07,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:03:07,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:03:07,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 08:03:07,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:07,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:03:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:03:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:03:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:03:07,358 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 08:03:07,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877395932]
[2020-09-25 08:03:07,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:03:07,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-09-25 08:03:07,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827508422]
[2020-09-25 08:03:07,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-09-25 08:03:07,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:03:07,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-09-25 08:03:07,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-25 08:03:07,389 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states.
[2020-09-25 08:03:07,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:03:07,418 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions.
[2020-09-25 08:03:07,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-09-25 08:03:07,420 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16
[2020-09-25 08:03:07,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:03:07,430 INFO L225 Difference]: With dead ends: 44
[2020-09-25 08:03:07,431 INFO L226 Difference]: Without dead ends: 24
[2020-09-25 08:03:07,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-25 08:03:07,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2020-09-25 08:03:07,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2020-09-25 08:03:07,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2020-09-25 08:03:07,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2020-09-25 08:03:07,484 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 16
[2020-09-25 08:03:07,484 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:03:07,485 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2020-09-25 08:03:07,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-09-25 08:03:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2020-09-25 08:03:07,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-09-25 08:03:07,486 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:03:07,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:03:07,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 08:03:07,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:03:07,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:03:07,488 INFO L82 PathProgramCache]: Analyzing trace with hash 774924389, now seen corresponding path program 1 times
[2020-09-25 08:03:07,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:03:07,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317248688]
[2020-09-25 08:03:07,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:03:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:07,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:07,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:07,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-25 08:03:07,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:03:07,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119
[2020-09-25 08:03:07,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:07,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 08:03:07,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 08:03:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-25 08:03:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 08:03:07,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:03:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:07,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:07,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:07,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:03:07,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:03:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 08:03:07,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:07,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:03:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:03:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:03:07,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:03:07,826 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 08:03:07,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317248688]
[2020-09-25 08:03:07,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:03:07,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-25 08:03:07,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219045538]
[2020-09-25 08:03:07,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 08:03:07,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:03:07,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 08:03:07,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-25 08:03:07,831 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states.
[2020-09-25 08:03:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:03:07,982 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions.
[2020-09-25 08:03:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-09-25 08:03:07,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16
[2020-09-25 08:03:07,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:03:07,986 INFO L225 Difference]: With dead ends: 43
[2020-09-25 08:03:07,986 INFO L226 Difference]: Without dead ends: 38
[2020-09-25 08:03:07,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2020-09-25 08:03:07,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2020-09-25 08:03:07,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25.
[2020-09-25 08:03:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2020-09-25 08:03:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions.
[2020-09-25 08:03:07,995 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 16
[2020-09-25 08:03:07,995 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:03:07,996 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions.
[2020-09-25 08:03:07,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 08:03:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions.
[2020-09-25 08:03:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-09-25 08:03:07,997 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:03:07,997 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]
[2020-09-25 08:03:07,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 08:03:07,997 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:03:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:03:07,998 INFO L82 PathProgramCache]: Analyzing trace with hash 775379929, now seen corresponding path program 1 times
[2020-09-25 08:03:07,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:03:07,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536649000]
[2020-09-25 08:03:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:03:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:08,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:08,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:08,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:08,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30
[2020-09-25 08:03:08,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 08:03:08,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342
[2020-09-25 08:03:08,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:08,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:08,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 08:03:08,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-25 08:03:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3
[2020-09-25 08:03:08,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 08:03:08,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:03:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:08,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:08,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:08,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:03:08,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:03:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 08:03:08,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:08,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:03:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:03:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:03:08,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:03:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 08:03:08,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536649000]
[2020-09-25 08:03:08,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 08:03:08,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-25 08:03:08,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183602100]
[2020-09-25 08:03:08,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-25 08:03:08,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:03:08,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-25 08:03:08,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-25 08:03:08,473 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 3 states.
[2020-09-25 08:03:08,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:03:08,505 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions.
[2020-09-25 08:03:08,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-25 08:03:08,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21
[2020-09-25 08:03:08,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:03:08,507 INFO L225 Difference]: With dead ends: 44
[2020-09-25 08:03:08,507 INFO L226 Difference]: Without dead ends: 31
[2020-09-25 08:03:08,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-25 08:03:08,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2020-09-25 08:03:08,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26.
[2020-09-25 08:03:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2020-09-25 08:03:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions.
[2020-09-25 08:03:08,513 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21
[2020-09-25 08:03:08,514 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:03:08,514 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions.
[2020-09-25 08:03:08,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-25 08:03:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions.
[2020-09-25 08:03:08,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-09-25 08:03:08,515 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:03:08,515 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]
[2020-09-25 08:03:08,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 08:03:08,516 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:03:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:03:08,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1973531292, now seen corresponding path program 1 times
[2020-09-25 08:03:08,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:03:08,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128082543]
[2020-09-25 08:03:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:03:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:08,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:08,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:08,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:08,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-09-25 08:03:08,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 08:03:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112
[2020-09-25 08:03:08,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:08,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 08:03:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-25 08:03:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 08:03:08,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:03:08,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:03:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:08,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:08,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:03:08,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:03:08,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 08:03:08,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:08,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:08,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:03:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:03:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:03:08,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:03:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 08:03:08,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128082543]
[2020-09-25 08:03:08,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 08:03:08,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-09-25 08:03:08,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392142887]
[2020-09-25 08:03:08,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 08:03:08,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:03:08,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 08:03:08,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-09-25 08:03:08,769 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 6 states.
[2020-09-25 08:03:08,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:03:08,880 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions.
[2020-09-25 08:03:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-09-25 08:03:08,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24
[2020-09-25 08:03:08,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:03:08,882 INFO L225 Difference]: With dead ends: 46
[2020-09-25 08:03:08,882 INFO L226 Difference]: Without dead ends: 41
[2020-09-25 08:03:08,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2020-09-25 08:03:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2020-09-25 08:03:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34.
[2020-09-25 08:03:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2020-09-25 08:03:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions.
[2020-09-25 08:03:08,890 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 24
[2020-09-25 08:03:08,890 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:03:08,890 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions.
[2020-09-25 08:03:08,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 08:03:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions.
[2020-09-25 08:03:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-09-25 08:03:08,891 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:03:08,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:03:08,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 08:03:08,892 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:03:08,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:03:08,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1981883390, now seen corresponding path program 1 times
[2020-09-25 08:03:08,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:03:08,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209671610]
[2020-09-25 08:03:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:03:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:09,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:09,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:09,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38
[2020-09-25 08:03:09,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 08:03:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336
[2020-09-25 08:03:09,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:09,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-09-25 08:03:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 08:03:09,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25
[2020-09-25 08:03:09,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:03:09,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:03:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:09,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:09,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:03:09,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:03:09,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 08:03:09,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:09,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:09,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:03:09,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:03:09,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:03:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:03:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 08:03:09,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209671610]
[2020-09-25 08:03:09,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 08:03:09,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-09-25 08:03:09,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766994347]
[2020-09-25 08:03:09,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-09-25 08:03:09,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:03:09,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-09-25 08:03:09,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182
[2020-09-25 08:03:09,695 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 14 states.
[2020-09-25 08:03:10,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:03:10,002 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions.
[2020-09-25 08:03:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-09-25 08:03:10,003 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29
[2020-09-25 08:03:10,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:03:10,004 INFO L225 Difference]: With dead ends: 56
[2020-09-25 08:03:10,004 INFO L226 Difference]: Without dead ends: 51
[2020-09-25 08:03:10,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462
[2020-09-25 08:03:10,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2020-09-25 08:03:10,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47.
[2020-09-25 08:03:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-09-25 08:03:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions.
[2020-09-25 08:03:10,018 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 29
[2020-09-25 08:03:10,018 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:03:10,018 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions.
[2020-09-25 08:03:10,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-09-25 08:03:10,018 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions.
[2020-09-25 08:03:10,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2020-09-25 08:03:10,020 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:03:10,020 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:03:10,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 08:03:10,021 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:03:10,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:03:10,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1157374763, now seen corresponding path program 2 times
[2020-09-25 08:03:10,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:03:10,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737079046]
[2020-09-25 08:03:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:03:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:10,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:10,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:10,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:10,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-09-25 08:03:10,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6
[2020-09-25 08:03:10,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783
[2020-09-25 08:03:10,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:10,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 08:03:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-25 08:03:10,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-09-25 08:03:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:03:10,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:03:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:10,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:10,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:10,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:03:10,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:03:10,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-25 08:03:10,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:10,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:03:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:03:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:03:10,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:03:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 08:03:10,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737079046]
[2020-09-25 08:03:10,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 08:03:10,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-25 08:03:10,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379568807]
[2020-09-25 08:03:10,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 08:03:10,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:03:10,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 08:03:10,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-25 08:03:10,937 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 7 states.
[2020-09-25 08:03:11,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:03:11,051 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions.
[2020-09-25 08:03:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-09-25 08:03:11,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37
[2020-09-25 08:03:11,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:03:11,053 INFO L225 Difference]: With dead ends: 70
[2020-09-25 08:03:11,053 INFO L226 Difference]: Without dead ends: 44
[2020-09-25 08:03:11,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2020-09-25 08:03:11,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2020-09-25 08:03:11,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39.
[2020-09-25 08:03:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2020-09-25 08:03:11,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions.
[2020-09-25 08:03:11,061 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 37
[2020-09-25 08:03:11,062 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:03:11,062 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions.
[2020-09-25 08:03:11,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 08:03:11,062 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions.
[2020-09-25 08:03:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2020-09-25 08:03:11,065 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:03:11,066 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:03:11,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-25 08:03:11,067 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:03:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:03:11,067 INFO L82 PathProgramCache]: Analyzing trace with hash -282773191, now seen corresponding path program 3 times
[2020-09-25 08:03:11,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:03:11,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875831424]
[2020-09-25 08:03:11,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:03:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:11,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:11,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:11,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:11,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-09-25 08:03:11,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-25 08:03:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881
[2020-09-25 08:03:11,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:11,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 08:03:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-25 08:03:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-09-25 08:03:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 08:03:12,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:03:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:12,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:12,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:03:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:03:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 08:03:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:12,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:03:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:03:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:03:12,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:03:12,161 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 08:03:12,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875831424]
[2020-09-25 08:03:12,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 08:03:12,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-25 08:03:12,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288073328]
[2020-09-25 08:03:12,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-25 08:03:12,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:03:12,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-25 08:03:12,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2020-09-25 08:03:12,164 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 10 states.
[2020-09-25 08:03:12,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:03:12,433 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions.
[2020-09-25 08:03:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-09-25 08:03:12,433 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37
[2020-09-25 08:03:12,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:03:12,435 INFO L225 Difference]: With dead ends: 59
[2020-09-25 08:03:12,435 INFO L226 Difference]: Without dead ends: 54
[2020-09-25 08:03:12,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306
[2020-09-25 08:03:12,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2020-09-25 08:03:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47.
[2020-09-25 08:03:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-09-25 08:03:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions.
[2020-09-25 08:03:12,442 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 37
[2020-09-25 08:03:12,442 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:03:12,442 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions.
[2020-09-25 08:03:12,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-25 08:03:12,442 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions.
[2020-09-25 08:03:12,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2020-09-25 08:03:12,444 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 08:03:12,444 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 08:03:12,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-25 08:03:12,444 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 08:03:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 08:03:12,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1065873285, now seen corresponding path program 4 times
[2020-09-25 08:03:12,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 08:03:12,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047734692]
[2020-09-25 08:03:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 08:03:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:12,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:12,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:13,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:13,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51
[2020-09-25 08:03:13,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 08:03:13,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335
[2020-09-25 08:03:13,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:13,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19
[2020-09-25 08:03:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 08:03:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-09-25 08:03:13,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 08:03:14,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 08:03:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 08:03:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 08:03:14,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 08:03:14,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 08:03:14,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 08:03:14,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-25 08:03:14,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 08:03:14,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 08:03:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 08:03:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 08:03:14,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 08:03:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 08:03:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-25 08:03:14,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047734692]
[2020-09-25 08:03:14,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 08:03:14,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19
[2020-09-25 08:03:14,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511981767]
[2020-09-25 08:03:14,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states
[2020-09-25 08:03:14,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 08:03:14,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2020-09-25 08:03:14,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342
[2020-09-25 08:03:14,231 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 19 states.
[2020-09-25 08:03:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 08:03:14,899 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions.
[2020-09-25 08:03:14,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-09-25 08:03:14,900 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42
[2020-09-25 08:03:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 08:03:14,900 INFO L225 Difference]: With dead ends: 71
[2020-09-25 08:03:14,900 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 08:03:14,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122
[2020-09-25 08:03:14,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 08:03:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 08:03:14,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 08:03:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 08:03:14,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42
[2020-09-25 08:03:14,903 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 08:03:14,903 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 08:03:14,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2020-09-25 08:03:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 08:03:14,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 08:03:14,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-25 08:03:14,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 08:03:15,066 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 08:03:15,067 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 08:03:15,067 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 08:03:15,067 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 08:03:15,067 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 08:03:15,067 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 08:03:15,067 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed.
[2020-09-25 08:03:15,067 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed.
[2020-09-25 08:03:15,068 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed.
[2020-09-25 08:03:15,068 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed.
[2020-09-25 08:03:15,068 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed.
[2020-09-25 08:03:15,068 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 25) no Hoare annotation was computed.
[2020-09-25 08:03:15,069 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed.
[2020-09-25 08:03:15,069 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed.
[2020-09-25 08:03:15,069 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed.
[2020-09-25 08:03:15,069 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed.
[2020-09-25 08:03:15,069 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-09-25 08:03:15,070 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 25) no Hoare annotation was computed.
[2020-09-25 08:03:15,070 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 25) the Hoare annotation is: true
[2020-09-25 08:03:15,070 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed.
[2020-09-25 08:03:15,070 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed.
[2020-09-25 08:03:15,070 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed.
[2020-09-25 08:03:15,070 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed.
[2020-09-25 08:03:15,071 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-25 08:03:15,071 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed.
[2020-09-25 08:03:15,071 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed.
[2020-09-25 08:03:15,071 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed.
[2020-09-25 08:03:15,072 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed.
[2020-09-25 08:03:15,072 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed.
[2020-09-25 08:03:15,072 INFO L264 CegarLoopResult]: At program point L18-6(lines 18 22) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (let ((.cse2 (<= main_~n~0 main_~k~0)) (.cse3 (<= .cse0 main_~i~0)) (.cse4 (<= main_~i~0 .cse0))) (or (let ((.cse1 (+ main_~i~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) .cse2)) (and .cse3 .cse4 (= main_~n~0 0)) (and .cse2 .cse3 .cse4))))
[2020-09-25 08:03:15,074 INFO L264 CegarLoopResult]: At program point L18-7(lines 18 22) the Hoare annotation is: (let ((.cse2 (* 2 main_~n~0))) (let ((.cse0 (<= main_~i~0 .cse2)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and (<= 0 main_~n~0) (<= main_~n~0 0) .cse0 .cse1) (and (< 0 main_~k~0) .cse1 (< main_~n~0 (+ main_~k~0 1))) (and (<= main_~n~0 main_~k~0) (<= .cse2 main_~i~0) .cse0 .cse1))))
[2020-09-25 08:03:15,074 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true
[2020-09-25 08:03:15,074 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed.
[2020-09-25 08:03:15,074 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-25 08:03:15,074 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed.
[2020-09-25 08:03:15,074 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed.
[2020-09-25 08:03:15,074 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed.
[2020-09-25 08:03:15,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:03:15 BoogieIcfgContainer
[2020-09-25 08:03:15,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 08:03:15,122 INFO L168 Benchmark]: Toolchain (without parser) took 8913.58 ms. Allocated memory was 138.9 MB in the beginning and 307.2 MB in the end (delta: 168.3 MB). Free memory was 102.0 MB in the beginning and 217.1 MB in the end (delta: -115.1 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB.
[2020-09-25 08:03:15,124 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 08:03:15,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.21 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
[2020-09-25 08:03:15,126 INFO L168 Benchmark]: Boogie Preprocessor took 106.67 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 180.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
[2020-09-25 08:03:15,127 INFO L168 Benchmark]: RCFGBuilder took 308.02 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 166.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB.
[2020-09-25 08:03:15,133 INFO L168 Benchmark]: TraceAbstraction took 8176.72 ms. Allocated memory was 201.3 MB in the beginning and 307.2 MB in the end (delta: 105.9 MB). Free memory was 166.1 MB in the beginning and 217.1 MB in the end (delta: -51.0 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB.
[2020-09-25 08:03:15,136 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 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 312.21 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 106.67 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 180.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 308.02 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 166.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 8176.72 ms. Allocated memory was 201.3 MB in the beginning and 307.2 MB in the end (delta: 105.9 MB). Free memory was 166.1 MB in the beginning and 217.1 MB in the end (delta: -51.0 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 18]: Loop Invariant
Derived loop invariant: (((2 * n <= i + 1 && i + 1 <= 2 * n) && n <= k) || ((2 * n <= i && i <= 2 * n) && n == 0)) || ((n <= k && 2 * n <= i) && i <= 2 * n)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.8s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 176 SDtfs, 141 SDslu, 660 SDs, 0 SdLazy, 657 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 41 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 97 HoareAnnotationTreeSize, 15 FomulaSimplifications, 124 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 43726 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 11/88 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...