/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/n.c11.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 12:31:23,070 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 12:31:23,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 12:31:23,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 12:31:23,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 12:31:23,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 12:31:23,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 12:31:23,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 12:31:23,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 12:31:23,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 12:31:23,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 12:31:23,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 12:31:23,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 12:31:23,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 12:31:23,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 12:31:23,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 12:31:23,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 12:31:23,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 12:31:23,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 12:31:23,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 12:31:23,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 12:31:23,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 12:31:23,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 12:31:23,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 12:31:23,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 12:31:23,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 12:31:23,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 12:31:23,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 12:31:23,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 12:31:23,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 12:31:23,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 12:31:23,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 12:31:23,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 12:31:23,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 12:31:23,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 12:31:23,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 12:31:23,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 12:31:23,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 12:31:23,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 12:31:23,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 12:31:23,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 12:31:23,197 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 12:31:23,246 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 12:31:23,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 12:31:23,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 12:31:23,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 12:31:23,250 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 12:31:23,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 12:31:23,250 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 12:31:23,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 12:31:23,251 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 12:31:23,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 12:31:23,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 12:31:23,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 12:31:23,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 12:31:23,253 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 12:31:23,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 12:31:23,253 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 12:31:23,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 12:31:23,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 12:31:23,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 12:31:23,254 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 12:31:23,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 12:31:23,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 12:31:23,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 12:31:23,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 12:31:23,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 12:31:23,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 12:31:23,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 12:31:23,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 12:31:23,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 12:31:23,256 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;
[2020-09-25 12:31:23,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 12:31:23,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 12:31:23,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 12:31:23,728 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 12:31:23,728 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 12:31:23,729 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c
[2020-09-25 12:31:23,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9f73c78/82a4acb841694c6e90fcd6f346f63c52/FLAG19457d07d
[2020-09-25 12:31:24,385 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 12:31:24,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/n.c11.c
[2020-09-25 12:31:24,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9f73c78/82a4acb841694c6e90fcd6f346f63c52/FLAG19457d07d
[2020-09-25 12:31:24,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b9f73c78/82a4acb841694c6e90fcd6f346f63c52
[2020-09-25 12:31:24,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 12:31:24,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 12:31:24,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 12:31:24,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 12:31:24,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 12:31:24,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:31:24" (1/1) ...
[2020-09-25 12:31:24,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3336fb4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:24, skipping insertion in model container
[2020-09-25 12:31:24,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:31:24" (1/1) ...
[2020-09-25 12:31:24,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 12:31:24,805 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 12:31:25,060 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 12:31:25,065 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 12:31:25,082 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 12:31:25,097 INFO L208 MainTranslator]: Completed translation
[2020-09-25 12:31:25,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:25 WrapperNode
[2020-09-25 12:31:25,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 12:31:25,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 12:31:25,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 12:31:25,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 12:31:25,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:25" (1/1) ...
[2020-09-25 12:31:25,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:25" (1/1) ...
[2020-09-25 12:31:25,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:25" (1/1) ...
[2020-09-25 12:31:25,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:25" (1/1) ...
[2020-09-25 12:31:25,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:25" (1/1) ...
[2020-09-25 12:31:25,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:25" (1/1) ...
[2020-09-25 12:31:25,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:25" (1/1) ...
[2020-09-25 12:31:25,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 12:31:25,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 12:31:25,228 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 12:31:25,228 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 12:31:25,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:25" (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 12:31:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 12:31:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 12:31:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 12:31:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 12:31:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 12:31:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 12:31:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-25 12:31:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 12:31:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 12:31:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 12:31:25,516 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 12:31:25,517 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 12:31:25,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:31:25 BoogieIcfgContainer
[2020-09-25 12:31:25,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 12:31:25,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 12:31:25,525 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 12:31:25,529 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 12:31:25,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:31:24" (1/3) ...
[2020-09-25 12:31:25,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb5e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:31:25, skipping insertion in model container
[2020-09-25 12:31:25,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:25" (2/3) ...
[2020-09-25 12:31:25,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb5e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:31:25, skipping insertion in model container
[2020-09-25 12:31:25,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:31:25" (3/3) ...
[2020-09-25 12:31:25,534 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c11.c
[2020-09-25 12:31:25,549 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 12:31:25,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 12:31:25,591 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 12:31:25,627 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 12:31:25,627 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 12:31:25,628 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 12:31:25,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 12:31:25,628 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 12:31:25,628 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 12:31:25,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 12:31:25,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 12:31:25,653 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states.
[2020-09-25 12:31:25,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-09-25 12:31:25,661 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 12:31:25,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 12:31:25,663 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 12:31:25,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 12:31:25,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1430370880, now seen corresponding path program 1 times
[2020-09-25 12:31:25,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 12:31:25,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220486821]
[2020-09-25 12:31:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 12:31:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:25,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:25,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:25,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:25,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21
[2020-09-25 12:31:25,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 12:31:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108
[2020-09-25 12:31:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:25,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 12:31:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 12:31:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-25 12:31:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 12:31:26,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 12:31:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:26,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:26,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:26,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 12:31:26,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 12:31:26,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 12:31:26,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:26,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 12:31:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 12:31:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 12:31:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 12:31:26,066 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 12:31:26,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220486821]
[2020-09-25 12:31:26,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 12:31:26,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 12:31:26,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655127353]
[2020-09-25 12:31:26,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 12:31:26,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 12:31:26,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 12:31:26,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 12:31:26,098 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states.
[2020-09-25 12:31:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 12:31:26,233 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions.
[2020-09-25 12:31:26,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 12:31:26,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12
[2020-09-25 12:31:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 12:31:26,246 INFO L225 Difference]: With dead ends: 64
[2020-09-25 12:31:26,246 INFO L226 Difference]: Without dead ends: 27
[2020-09-25 12:31:26,253 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 12:31:26,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2020-09-25 12:31:26,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24.
[2020-09-25 12:31:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2020-09-25 12:31:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2020-09-25 12:31:26,298 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12
[2020-09-25 12:31:26,298 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 12:31:26,298 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2020-09-25 12:31:26,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 12:31:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2020-09-25 12:31:26,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-09-25 12:31:26,300 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 12:31:26,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 12:31:26,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 12:31:26,301 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 12:31:26,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 12:31:26,301 INFO L82 PathProgramCache]: Analyzing trace with hash -4953541, now seen corresponding path program 1 times
[2020-09-25 12:31:26,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 12:31:26,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546426316]
[2020-09-25 12:31:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 12:31:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:26,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:26,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:26,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29
[2020-09-25 12:31:26,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 12:31:26,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361
[2020-09-25 12:31:26,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:26,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 12:31:26,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 12:31:26,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-09-25 12:31:26,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 12:31:26,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 12:31:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:26,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:26,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:26,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 12:31:26,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 12:31:26,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 12:31:26,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:26,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:26,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 12:31:26,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 12:31:26,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 12:31:26,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 12:31:26,826 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 12:31:26,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546426316]
[2020-09-25 12:31:26,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 12:31:26,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-25 12:31:26,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384476491]
[2020-09-25 12:31:26,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 12:31:26,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 12:31:26,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 12:31:26,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2020-09-25 12:31:26,831 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states.
[2020-09-25 12:31:26,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 12:31:26,952 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions.
[2020-09-25 12:31:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-09-25 12:31:26,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20
[2020-09-25 12:31:26,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 12:31:26,954 INFO L225 Difference]: With dead ends: 52
[2020-09-25 12:31:26,954 INFO L226 Difference]: Without dead ends: 34
[2020-09-25 12:31:26,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2020-09-25 12:31:26,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2020-09-25 12:31:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31.
[2020-09-25 12:31:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2020-09-25 12:31:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions.
[2020-09-25 12:31:26,964 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20
[2020-09-25 12:31:26,965 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 12:31:26,965 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions.
[2020-09-25 12:31:26,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 12:31:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions.
[2020-09-25 12:31:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-09-25 12:31:26,967 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 12:31:26,967 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 12:31:26,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 12:31:26,968 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 12:31:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 12:31:26,968 INFO L82 PathProgramCache]: Analyzing trace with hash 628881157, now seen corresponding path program 2 times
[2020-09-25 12:31:26,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 12:31:26,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735811604]
[2020-09-25 12:31:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 12:31:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:27,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:27,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:27,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36
[2020-09-25 12:31:27,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 12:31:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357
[2020-09-25 12:31:27,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:27,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 12:31:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 12:31:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-09-25 12:31:27,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 12:31:27,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 12:31:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:27,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:27,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:27,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 12:31:27,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 12:31:27,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 12:31:27,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:27,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 12:31:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 12:31:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 12:31:27,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 12:31:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 12:31:27,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735811604]
[2020-09-25 12:31:27,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 12:31:27,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-25 12:31:27,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988030118]
[2020-09-25 12:31:27,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-25 12:31:27,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 12:31:27,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-25 12:31:27,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-09-25 12:31:27,512 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states.
[2020-09-25 12:31:27,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 12:31:27,721 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions.
[2020-09-25 12:31:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-09-25 12:31:27,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27
[2020-09-25 12:31:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 12:31:27,724 INFO L225 Difference]: With dead ends: 66
[2020-09-25 12:31:27,726 INFO L226 Difference]: Without dead ends: 41
[2020-09-25 12:31:27,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182
[2020-09-25 12:31:27,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2020-09-25 12:31:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38.
[2020-09-25 12:31:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2020-09-25 12:31:27,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions.
[2020-09-25 12:31:27,742 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 27
[2020-09-25 12:31:27,742 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 12:31:27,742 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions.
[2020-09-25 12:31:27,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-25 12:31:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions.
[2020-09-25 12:31:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-09-25 12:31:27,745 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 12:31:27,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 12:31:27,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 12:31:27,746 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 12:31:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 12:31:27,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1577865979, now seen corresponding path program 3 times
[2020-09-25 12:31:27,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 12:31:27,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685333975]
[2020-09-25 12:31:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 12:31:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:27,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:28,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:28,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43
[2020-09-25 12:31:28,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 12:31:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427
[2020-09-25 12:31:28,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:28,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-25 12:31:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 12:31:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30
[2020-09-25 12:31:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 12:31:28,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 12:31:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:28,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:28,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:28,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 12:31:28,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 12:31:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 12:31:28,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:28,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 12:31:28,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 12:31:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 12:31:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-25 12:31:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 12:31:28,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685333975]
[2020-09-25 12:31:28,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 12:31:28,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-25 12:31:28,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344816836]
[2020-09-25 12:31:28,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 12:31:28,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 12:31:28,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 12:31:28,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-09-25 12:31:28,445 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 11 states.
[2020-09-25 12:31:28,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 12:31:28,747 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions.
[2020-09-25 12:31:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-09-25 12:31:28,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34
[2020-09-25 12:31:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 12:31:28,754 INFO L225 Difference]: With dead ends: 80
[2020-09-25 12:31:28,754 INFO L226 Difference]: Without dead ends: 48
[2020-09-25 12:31:28,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306
[2020-09-25 12:31:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2020-09-25 12:31:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45.
[2020-09-25 12:31:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2020-09-25 12:31:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions.
[2020-09-25 12:31:28,769 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 34
[2020-09-25 12:31:28,769 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 12:31:28,769 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions.
[2020-09-25 12:31:28,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 12:31:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions.
[2020-09-25 12:31:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-09-25 12:31:28,771 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 12:31:28,771 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 12:31:28,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 12:31:28,772 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 12:31:28,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 12:31:28,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1087419973, now seen corresponding path program 4 times
[2020-09-25 12:31:28,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 12:31:28,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285098003]
[2020-09-25 12:31:28,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 12:31:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:29,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:29,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50
[2020-09-25 12:31:29,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 12:31:29,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510
[2020-09-25 12:31:29,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:29,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-25 12:31:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 12:31:29,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37
[2020-09-25 12:31:29,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 12:31:29,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 12:31:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:29,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:29,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:29,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 12:31:29,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 12:31:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 12:31:29,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:29,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 12:31:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 12:31:29,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 12:31:29,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 12:31:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 12:31:29,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285098003]
[2020-09-25 12:31:29,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 12:31:29,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13
[2020-09-25 12:31:29,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118543921]
[2020-09-25 12:31:29,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-09-25 12:31:29,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 12:31:29,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-09-25 12:31:29,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156
[2020-09-25 12:31:29,550 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 13 states.
[2020-09-25 12:31:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 12:31:29,918 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions.
[2020-09-25 12:31:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-09-25 12:31:29,919 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41
[2020-09-25 12:31:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 12:31:29,920 INFO L225 Difference]: With dead ends: 62
[2020-09-25 12:31:29,920 INFO L226 Difference]: Without dead ends: 56
[2020-09-25 12:31:29,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462
[2020-09-25 12:31:29,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2020-09-25 12:31:29,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50.
[2020-09-25 12:31:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-09-25 12:31:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions.
[2020-09-25 12:31:29,929 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 41
[2020-09-25 12:31:29,929 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 12:31:29,929 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions.
[2020-09-25 12:31:29,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-09-25 12:31:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions.
[2020-09-25 12:31:29,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-09-25 12:31:29,931 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 12:31:29,931 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 12:31:29,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 12:31:29,932 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 12:31:29,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 12:31:29,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1795298373, now seen corresponding path program 5 times
[2020-09-25 12:31:29,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 12:31:29,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384220656]
[2020-09-25 12:31:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 12:31:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:29,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:30,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:30,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-09-25 12:31:30,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 12:31:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414
[2020-09-25 12:31:30,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:30,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-25 12:31:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 12:31:30,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33
[2020-09-25 12:31:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 12:31:30,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 12:31:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 12:31:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 12:31:30,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 12:31:30,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 12:31:30,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 12:31:30,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 12:31:30,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 12:31:30,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-09-25 12:31:30,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 12:31:30,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 12:31:30,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 12:31:30,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 12:31:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 21 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 12:31:30,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384220656]
[2020-09-25 12:31:30,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 12:31:30,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-25 12:31:30,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777394830]
[2020-09-25 12:31:30,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 12:31:30,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 12:31:30,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 12:31:30,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2020-09-25 12:31:30,562 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 11 states.
[2020-09-25 12:31:30,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 12:31:30,851 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions.
[2020-09-25 12:31:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-09-25 12:31:30,852 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48
[2020-09-25 12:31:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 12:31:30,853 INFO L225 Difference]: With dead ends: 79
[2020-09-25 12:31:30,853 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 12:31:30,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342
[2020-09-25 12:31:30,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 12:31:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 12:31:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 12:31:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 12:31:30,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48
[2020-09-25 12:31:30,856 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 12:31:30,856 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 12:31:30,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 12:31:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 12:31:30,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 12:31:30,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-25 12:31:30,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 12:31:30,972 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 12:31:30,972 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 12:31:30,972 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 12:31:30,972 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 12:31:30,973 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 12:31:30,973 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 12:31:30,973 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 32) no Hoare annotation was computed.
[2020-09-25 12:31:30,973 INFO L268 CegarLoopResult]: For program point L21(lines 21 22) no Hoare annotation was computed.
[2020-09-25 12:31:30,973 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 22) no Hoare annotation was computed.
[2020-09-25 12:31:30,973 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed.
[2020-09-25 12:31:30,973 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed.
[2020-09-25 12:31:30,974 INFO L264 CegarLoopResult]: At program point L19-4(lines 19 27) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4))
[2020-09-25 12:31:30,974 INFO L264 CegarLoopResult]: At program point L19-5(lines 19 27) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4))
[2020-09-25 12:31:30,974 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 32) no Hoare annotation was computed.
[2020-09-25 12:31:30,974 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 12 32) the Hoare annotation is: true
[2020-09-25 12:31:30,974 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed.
[2020-09-25 12:31:30,975 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed.
[2020-09-25 12:31:30,975 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed.
[2020-09-25 12:31:30,975 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed.
[2020-09-25 12:31:30,975 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed.
[2020-09-25 12:31:30,975 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-25 12:31:30,975 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed.
[2020-09-25 12:31:30,975 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true
[2020-09-25 12:31:30,976 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed.
[2020-09-25 12:31:30,976 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed.
[2020-09-25 12:31:30,976 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed.
[2020-09-25 12:31:30,976 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed.
[2020-09-25 12:31:30,976 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed.
[2020-09-25 12:31:31,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:31:31 BoogieIcfgContainer
[2020-09-25 12:31:31,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 12:31:31,005 INFO L168 Benchmark]: Toolchain (without parser) took 6249.49 ms. Allocated memory was 143.7 MB in the beginning and 277.3 MB in the end (delta: 133.7 MB). Free memory was 102.1 MB in the beginning and 213.5 MB in the end (delta: -111.4 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB.
[2020-09-25 12:31:31,007 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 143.7 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
[2020-09-25 12:31:31,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.61 ms. Allocated memory is still 143.7 MB. Free memory was 101.5 MB in the beginning and 91.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-09-25 12:31:31,009 INFO L168 Benchmark]: Boogie Preprocessor took 128.25 ms. Allocated memory was 143.7 MB in the beginning and 203.9 MB in the end (delta: 60.3 MB). Free memory was 91.6 MB in the beginning and 182.1 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
[2020-09-25 12:31:31,010 INFO L168 Benchmark]: RCFGBuilder took 295.81 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 170.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB.
[2020-09-25 12:31:31,011 INFO L168 Benchmark]: TraceAbstraction took 5477.05 ms. Allocated memory was 203.9 MB in the beginning and 277.3 MB in the end (delta: 73.4 MB). Free memory was 169.9 MB in the beginning and 213.5 MB in the end (delta: -43.6 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB.
[2020-09-25 12:31:31,015 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.27 ms. Allocated memory is still 143.7 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 338.61 ms. Allocated memory is still 143.7 MB. Free memory was 101.5 MB in the beginning and 91.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 128.25 ms. Allocated memory was 143.7 MB in the beginning and 203.9 MB in the end (delta: 60.3 MB). Free memory was 91.6 MB in the beginning and 182.1 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 295.81 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 170.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 5477.05 ms. Allocated memory was 203.9 MB in the beginning and 277.3 MB in the end (delta: 73.4 MB). Free memory was 169.9 MB in the beginning and 213.5 MB in the end (delta: -43.6 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 19]: Loop Invariant
Derived loop invariant: 0 < len / 4294967296 + 1 && len <= 4
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 131 SDtfs, 100 SDslu, 796 SDs, 0 SdLazy, 625 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 26 NumberOfFragments, 27 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 112 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 34222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 21/155 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...