/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01-2.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 04:34:47,566 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 04:34:47,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 04:34:47,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 04:34:47,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 04:34:47,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 04:34:47,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 04:34:47,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 04:34:47,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 04:34:47,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 04:34:47,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 04:34:47,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 04:34:47,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 04:34:47,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 04:34:47,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 04:34:47,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 04:34:47,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 04:34:47,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 04:34:47,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 04:34:47,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 04:34:47,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 04:34:47,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 04:34:47,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 04:34:47,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 04:34:47,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 04:34:47,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 04:34:47,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 04:34:47,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 04:34:47,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 04:34:47,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 04:34:47,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 04:34:47,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 04:34:47,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 04:34:47,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 04:34:47,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 04:34:47,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 04:34:47,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 04:34:47,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 04:34:47,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 04:34:47,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 04:34:47,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 04:34:47,706 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 04:34:47,731 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 04:34:47,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 04:34:47,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 04:34:47,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 04:34:47,733 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 04:34:47,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 04:34:47,734 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 04:34:47,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 04:34:47,734 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 04:34:47,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 04:34:47,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 04:34:47,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 04:34:47,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 04:34:47,735 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 04:34:47,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 04:34:47,736 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 04:34:47,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 04:34:47,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 04:34:47,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 04:34:47,737 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 04:34:47,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 04:34:47,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 04:34:47,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 04:34:47,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 04:34:47,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 04:34:47,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 04:34:47,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 04:34:47,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 04:34:47,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 04:34:47,739 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true;
[2020-09-25 04:34:48,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 04:34:48,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 04:34:48,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 04:34:48,259 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 04:34:48,259 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 04:34:48,261 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i
[2020-09-25 04:34:48,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c7af37c2/62d1fb0e5d9840aabaa49553727c360c/FLAG918fed8c8
[2020-09-25 04:34:48,902 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 04:34:48,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01-2.i
[2020-09-25 04:34:48,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c7af37c2/62d1fb0e5d9840aabaa49553727c360c/FLAG918fed8c8
[2020-09-25 04:34:49,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c7af37c2/62d1fb0e5d9840aabaa49553727c360c
[2020-09-25 04:34:49,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 04:34:49,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 04:34:49,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 04:34:49,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 04:34:49,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 04:34:49,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:34:49" (1/1) ...
[2020-09-25 04:34:49,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180772d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49, skipping insertion in model container
[2020-09-25 04:34:49,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:34:49" (1/1) ...
[2020-09-25 04:34:49,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 04:34:49,281 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 04:34:49,504 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 04:34:49,510 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 04:34:49,527 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 04:34:49,542 INFO L208 MainTranslator]: Completed translation
[2020-09-25 04:34:49,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49 WrapperNode
[2020-09-25 04:34:49,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 04:34:49,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 04:34:49,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 04:34:49,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 04:34:49,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ...
[2020-09-25 04:34:49,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ...
[2020-09-25 04:34:49,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ...
[2020-09-25 04:34:49,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ...
[2020-09-25 04:34:49,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ...
[2020-09-25 04:34:49,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ...
[2020-09-25 04:34:49,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (1/1) ...
[2020-09-25 04:34:49,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 04:34:49,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 04:34:49,660 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 04:34:49,660 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 04:34:49,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (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 04:34:49,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 04:34:49,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 04:34:49,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 04:34:49,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 04:34:49,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 04:34:49,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 04:34:49,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 04:34:49,737 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 04:34:49,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 04:34:49,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 04:34:49,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 04:34:49,959 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 04:34:49,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:34:49 BoogieIcfgContainer
[2020-09-25 04:34:49,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 04:34:49,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 04:34:49,967 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 04:34:49,972 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 04:34:49,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:34:49" (1/3) ...
[2020-09-25 04:34:49,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bed91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:34:49, skipping insertion in model container
[2020-09-25 04:34:49,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:34:49" (2/3) ...
[2020-09-25 04:34:49,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bed91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:34:49, skipping insertion in model container
[2020-09-25 04:34:49,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:34:49" (3/3) ...
[2020-09-25 04:34:49,977 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i
[2020-09-25 04:34:49,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 04:34:50,003 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 04:34:50,063 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 04:34:50,137 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 04:34:50,138 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 04:34:50,141 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 04:34:50,141 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 04:34:50,141 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 04:34:50,142 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 04:34:50,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 04:34:50,145 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 04:34:50,184 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states.
[2020-09-25 04:34:50,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-09-25 04:34:50,200 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 04:34:50,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 04:34:50,203 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 04:34:50,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 04:34:50,215 INFO L82 PathProgramCache]: Analyzing trace with hash 2078788022, now seen corresponding path program 1 times
[2020-09-25 04:34:50,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 04:34:50,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175947877]
[2020-09-25 04:34:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 04:34:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 04:34:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 04:34:50,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 04:34:50,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-25 04:34:50,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 04:34:50,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217
[2020-09-25 04:34:50,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 04:34:50,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2
[2020-09-25 04:34:50,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 04:34:50,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15
[2020-09-25 04:34:50,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 04:34:50,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-25 04:34:50,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 04:34:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 04:34:50,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 04:34:50,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 04:34:50,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 04:34:50,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 04:34:50,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 04:34:50,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 04:34:50,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2
[2020-09-25 04:34:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 04:34:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 04:34:50,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 04:34:50,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 04:34:50,712 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 04:34:50,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175947877]
[2020-09-25 04:34:50,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 04:34:50,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 04:34:50,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899021226]
[2020-09-25 04:34:50,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 04:34:50,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 04:34:50,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 04:34:50,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 04:34:50,743 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states.
[2020-09-25 04:34:50,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 04:34:50,859 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions.
[2020-09-25 04:34:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 04:34:50,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16
[2020-09-25 04:34:50,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 04:34:50,884 INFO L225 Difference]: With dead ends: 48
[2020-09-25 04:34:50,885 INFO L226 Difference]: Without dead ends: 23
[2020-09-25 04:34:50,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 04:34:50,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2020-09-25 04:34:50,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22.
[2020-09-25 04:34:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2020-09-25 04:34:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions.
[2020-09-25 04:34:50,937 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16
[2020-09-25 04:34:50,938 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 04:34:50,938 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions.
[2020-09-25 04:34:50,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 04:34:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions.
[2020-09-25 04:34:50,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-09-25 04:34:50,939 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 04:34:50,940 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 04:34:50,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 04:34:50,940 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 04:34:50,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 04:34:50,941 INFO L82 PathProgramCache]: Analyzing trace with hash 493290783, now seen corresponding path program 1 times
[2020-09-25 04:34:50,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 04:34:50,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759962831]
[2020-09-25 04:34:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 04:34:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 04:34:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 04:34:51,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 04:34:51,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30
[2020-09-25 04:34:51,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 04:34:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330
[2020-09-25 04:34:51,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 04:34:51,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2
[2020-09-25 04:34:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-25 04:34:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15
[2020-09-25 04:34:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-09-25 04:34:51,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 04:34:51,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 04:34:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 04:34:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 04:34:51,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 04:34:51,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 04:34:51,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 04:34:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 04:34:51,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 04:34:51,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2
[2020-09-25 04:34:51,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 04:34:51,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 04:34:51,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 04:34:51,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 04:34:51,631 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 04:34:51,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759962831]
[2020-09-25 04:34:51,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 04:34:51,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-25 04:34:51,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606571212]
[2020-09-25 04:34:51,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 04:34:51,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 04:34:51,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 04:34:51,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2020-09-25 04:34:51,636 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 11 states.
[2020-09-25 04:34:51,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 04:34:51,920 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions.
[2020-09-25 04:34:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-09-25 04:34:51,921 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21
[2020-09-25 04:34:51,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 04:34:51,922 INFO L225 Difference]: With dead ends: 33
[2020-09-25 04:34:51,923 INFO L226 Difference]: Without dead ends: 28
[2020-09-25 04:34:51,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240
[2020-09-25 04:34:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2020-09-25 04:34:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27.
[2020-09-25 04:34:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2020-09-25 04:34:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions.
[2020-09-25 04:34:51,931 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21
[2020-09-25 04:34:51,931 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 04:34:51,931 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions.
[2020-09-25 04:34:51,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 04:34:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions.
[2020-09-25 04:34:51,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2020-09-25 04:34:51,932 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 04:34:51,933 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 04:34:51,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 04:34:51,933 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 04:34:51,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 04:34:51,934 INFO L82 PathProgramCache]: Analyzing trace with hash -194935978, now seen corresponding path program 2 times
[2020-09-25 04:34:51,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 04:34:51,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340644380]
[2020-09-25 04:34:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 04:34:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 04:34:51,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 04:34:52,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 04:34:52,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-25 04:34:52,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 04:34:52,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192
[2020-09-25 04:34:52,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 04:34:52,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2
[2020-09-25 04:34:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13
[2020-09-25 04:34:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15
[2020-09-25 04:34:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-09-25 04:34:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 04:34:52,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 04:34:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 04:34:52,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 04:34:52,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 04:34:52,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 04:34:52,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 04:34:52,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 04:34:52,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 04:34:52,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2
[2020-09-25 04:34:52,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 04:34:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 04:34:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 04:34:52,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 04:34:52,515 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 04:34:52,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340644380]
[2020-09-25 04:34:52,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 04:34:52,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-09-25 04:34:52,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140956380]
[2020-09-25 04:34:52,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-09-25 04:34:52,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 04:34:52,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-09-25 04:34:52,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182
[2020-09-25 04:34:52,518 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states.
[2020-09-25 04:34:52,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 04:34:52,980 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions.
[2020-09-25 04:34:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-09-25 04:34:52,981 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26
[2020-09-25 04:34:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 04:34:52,984 INFO L225 Difference]: With dead ends: 37
[2020-09-25 04:34:52,984 INFO L226 Difference]: Without dead ends: 32
[2020-09-25 04:34:52,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506
[2020-09-25 04:34:52,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2020-09-25 04:34:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2020-09-25 04:34:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-09-25 04:34:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions.
[2020-09-25 04:34:52,995 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26
[2020-09-25 04:34:52,995 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 04:34:52,995 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions.
[2020-09-25 04:34:52,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-09-25 04:34:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions.
[2020-09-25 04:34:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2020-09-25 04:34:52,997 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 04:34:52,997 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 04:34:52,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 04:34:52,998 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 04:34:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 04:34:52,998 INFO L82 PathProgramCache]: Analyzing trace with hash -903852161, now seen corresponding path program 3 times
[2020-09-25 04:34:52,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 04:34:52,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642036119]
[2020-09-25 04:34:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 04:34:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 04:34:53,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 04:34:53,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 04:34:53,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40
[2020-09-25 04:34:53,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 04:34:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304
[2020-09-25 04:34:53,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 04:34:53,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2
[2020-09-25 04:34:53,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-25 04:34:53,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15
[2020-09-25 04:34:53,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24
[2020-09-25 04:34:53,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 04:34:53,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 04:34:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 04:34:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 04:34:53,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 04:34:53,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 04:34:53,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 04:34:53,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 04:34:53,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 04:34:53,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2
[2020-09-25 04:34:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 04:34:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 04:34:53,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 04:34:53,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 04:34:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-25 04:34:53,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642036119]
[2020-09-25 04:34:53,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 04:34:53,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16
[2020-09-25 04:34:53,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195388032]
[2020-09-25 04:34:53,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-09-25 04:34:53,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 04:34:53,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-09-25 04:34:53,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240
[2020-09-25 04:34:53,667 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 16 states.
[2020-09-25 04:34:54,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 04:34:54,123 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions.
[2020-09-25 04:34:54,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-09-25 04:34:54,124 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31
[2020-09-25 04:34:54,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 04:34:54,125 INFO L225 Difference]: With dead ends: 32
[2020-09-25 04:34:54,125 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 04:34:54,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702
[2020-09-25 04:34:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 04:34:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 04:34:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 04:34:54,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 04:34:54,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31
[2020-09-25 04:34:54,127 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 04:34:54,127 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 04:34:54,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-09-25 04:34:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 04:34:54,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 04:34:54,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 04:34:54,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 04:34:54,235 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 04:34:54,235 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 04:34:54,235 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 04:34:54,236 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 04:34:54,236 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 04:34:54,236 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 04:34:54,236 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed.
[2020-09-25 04:34:54,236 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-09-25 04:34:54,236 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed.
[2020-09-25 04:34:54,236 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed.
[2020-09-25 04:34:54,237 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed.
[2020-09-25 04:34:54,237 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true
[2020-09-25 04:34:54,237 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed.
[2020-09-25 04:34:54,237 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed.
[2020-09-25 04:34:54,237 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed.
[2020-09-25 04:34:54,237 INFO L268 CegarLoopResult]: For program point L14-3(lines 14 16) no Hoare annotation was computed.
[2020-09-25 04:34:54,238 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed.
[2020-09-25 04:34:54,238 INFO L268 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed.
[2020-09-25 04:34:54,238 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed.
[2020-09-25 04:34:54,238 INFO L268 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed.
[2020-09-25 04:34:54,238 INFO L264 CegarLoopResult]: At program point L14-6(lines 14 16) the Hoare annotation is: (let ((.cse3 (* 2 main_~i~0)) (.cse2 (+ main_~sn~0 2))) (let ((.cse0 (<= .cse3 .cse2)) (.cse1 (<= .cse2 .cse3))) (or (and (= main_~i~0 1) .cse0 .cse1) (and .cse0 .cse1 (< main_~sn~0 (+ (* 2 main_~n~0) 1))))))
[2020-09-25 04:34:54,239 INFO L264 CegarLoopResult]: At program point L14-7(lines 14 16) the Hoare annotation is: (or (= main_~sn~0 0) (= main_~sn~0 (* main_~n~0 2)))
[2020-09-25 04:34:54,239 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true
[2020-09-25 04:34:54,239 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed.
[2020-09-25 04:34:54,239 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed.
[2020-09-25 04:34:54,239 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed.
[2020-09-25 04:34:54,240 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed.
[2020-09-25 04:34:54,240 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed.
[2020-09-25 04:34:54,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:34:54 BoogieIcfgContainer
[2020-09-25 04:34:54,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 04:34:54,266 INFO L168 Benchmark]: Toolchain (without parser) took 5038.56 ms. Allocated memory was 140.5 MB in the beginning and 245.4 MB in the end (delta: 104.9 MB). Free memory was 104.2 MB in the beginning and 192.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB.
[2020-09-25 04:34:54,267 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 04:34:54,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.84 ms. Allocated memory is still 140.5 MB. Free memory was 103.6 MB in the beginning and 94.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
[2020-09-25 04:34:54,269 INFO L168 Benchmark]: Boogie Preprocessor took 115.99 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 182.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB.
[2020-09-25 04:34:54,270 INFO L168 Benchmark]: RCFGBuilder took 305.19 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 169.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
[2020-09-25 04:34:54,271 INFO L168 Benchmark]: TraceAbstraction took 4295.36 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 169.1 MB in the beginning and 192.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB.
[2020-09-25 04:34:54,275 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 311.84 ms. Allocated memory is still 140.5 MB. Free memory was 103.6 MB in the beginning and 94.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 115.99 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 182.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 305.19 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 169.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 4295.36 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 169.1 MB in the beginning and 192.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 14]: Loop Invariant
Derived loop invariant: ((i == 1 && 2 * i <= sn + 2) && sn + 2 <= 2 * i) || ((2 * i <= sn + 2 && sn + 2 <= 2 * i) && sn < 2 * n + 1)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 38 SDslu, 400 SDs, 0 SdLazy, 285 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 55 HoareAnnotationTreeSize, 11 FomulaSimplifications, 112 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 16980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 2/26 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...