/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c
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This is Ultimate 0.1.25-c90d42b
[2020-09-24 17:01:11,083 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 17:01:11,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 17:01:11,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 17:01:11,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 17:01:11,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 17:01:11,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 17:01:11,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 17:01:11,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 17:01:11,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 17:01:11,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 17:01:11,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 17:01:11,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 17:01:11,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 17:01:11,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 17:01:11,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 17:01:11,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 17:01:11,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 17:01:11,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 17:01:11,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 17:01:11,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 17:01:11,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 17:01:11,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 17:01:11,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 17:01:11,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 17:01:11,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 17:01:11,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 17:01:11,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 17:01:11,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 17:01:11,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 17:01:11,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 17:01:11,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 17:01:11,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 17:01:11,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 17:01:11,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 17:01:11,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 17:01:11,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 17:01:11,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 17:01:11,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 17:01:11,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 17:01:11,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 17:01:11,212 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
[2020-09-24 17:01:11,264 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 17:01:11,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 17:01:11,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 17:01:11,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 17:01:11,268 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 17:01:11,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 17:01:11,269 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 17:01:11,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 17:01:11,269 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 17:01:11,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 17:01:11,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 17:01:11,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 17:01:11,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 17:01:11,272 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 17:01:11,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 17:01:11,272 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 17:01:11,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 17:01:11,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 17:01:11,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 17:01:11,273 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 17:01:11,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 17:01:11,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 17:01:11,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 17:01:11,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 17:01:11,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 17:01:11,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 17:01:11,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 17:01:11,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 17:01:11,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 17:01:11,275 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;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;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;log-additional-information=true;
[2020-09-24 17:01:11,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 17:01:11,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 17:01:11,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 17:01:11,780 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 17:01:11,781 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 17:01:11,783 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c
[2020-09-24 17:01:11,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e54648da3/d37ee35233ce4b3d863258e81d166681/FLAG98a68cc29
[2020-09-24 17:01:12,385 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 17:01:12,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c
[2020-09-24 17:01:12,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e54648da3/d37ee35233ce4b3d863258e81d166681/FLAG98a68cc29
[2020-09-24 17:01:12,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e54648da3/d37ee35233ce4b3d863258e81d166681
[2020-09-24 17:01:12,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 17:01:12,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 17:01:12,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 17:01:12,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 17:01:12,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 17:01:12,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:01:12" (1/1) ...
[2020-09-24 17:01:12,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbfc66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:12, skipping insertion in model container
[2020-09-24 17:01:12,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:01:12" (1/1) ...
[2020-09-24 17:01:12,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 17:01:12,795 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 17:01:13,115 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:01:13,120 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 17:01:13,155 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:01:13,179 INFO L208 MainTranslator]: Completed translation
[2020-09-24 17:01:13,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:13 WrapperNode
[2020-09-24 17:01:13,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 17:01:13,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 17:01:13,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 17:01:13,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 17:01:13,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:13" (1/1) ...
[2020-09-24 17:01:13,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:13" (1/1) ...
[2020-09-24 17:01:13,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:13" (1/1) ...
[2020-09-24 17:01:13,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:13" (1/1) ...
[2020-09-24 17:01:13,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:13" (1/1) ...
[2020-09-24 17:01:13,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:13" (1/1) ...
[2020-09-24 17:01:13,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:13" (1/1) ...
[2020-09-24 17:01:13,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 17:01:13,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 17:01:13,325 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 17:01:13,325 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 17:01:13,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:13" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 17:01:13,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 17:01:13,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 17:01:13,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float
[2020-09-24 17:01:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float
[2020-09-24 17:01:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float
[2020-09-24 17:01:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 17:01:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 17:01:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float
[2020-09-24 17:01:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 17:01:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-24 17:01:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 17:01:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 17:01:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float
[2020-09-24 17:01:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float
[2020-09-24 17:01:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 17:01:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 17:01:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 17:01:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-24 17:01:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 17:01:13,872 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 17:01:13,872 INFO L295 CfgBuilder]: Removed 4 assume(true) statements.
[2020-09-24 17:01:13,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:01:13 BoogieIcfgContainer
[2020-09-24 17:01:13,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 17:01:13,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 17:01:13,880 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 17:01:13,884 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 17:01:13,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:01:12" (1/3) ...
[2020-09-24 17:01:13,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0fb064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:01:13, skipping insertion in model container
[2020-09-24 17:01:13,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:01:13" (2/3) ...
[2020-09-24 17:01:13,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0fb064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:01:13, skipping insertion in model container
[2020-09-24 17:01:13,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:01:13" (3/3) ...
[2020-09-24 17:01:13,888 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c
[2020-09-24 17:01:13,901 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 17:01:13,912 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 17:01:13,938 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 17:01:13,966 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 17:01:13,966 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 17:01:13,967 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 17:01:13,967 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 17:01:13,967 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 17:01:13,967 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 17:01:13,967 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 17:01:13,967 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 17:01:13,989 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states.
[2020-09-24 17:01:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-09-24 17:01:13,999 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 17:01:14,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:01:14,001 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:01:14,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:01:14,007 INFO L82 PathProgramCache]: Analyzing trace with hash 2131665852, now seen corresponding path program 1 times
[2020-09-24 17:01:14,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:01:14,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095116323]
[2020-09-24 17:01:14,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:01:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:14,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:14,515 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:14,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 17:01:14,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 17:01:14,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370
[2020-09-24 17:01:14,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:14,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:01:14,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26
[2020-09-24 17:01:14,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:01:14,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 17:01:14,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:01:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:14,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:14,589 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:14,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 17:01:14,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:14,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 17:01:14,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:01:14,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:01:14,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:01:14,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:01:14,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 17:01:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:14,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:14,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:14,643 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:14,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 17:01:14,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 17:01:14,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-24 17:01:14,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:14,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:01:14,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-24 17:01:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:01:14,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:01:14,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 17:01:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:14,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:14,669 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:14,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 17:01:14,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:14,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-24 17:01:14,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:01:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-09-24 17:01:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:01:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:01:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:01:14,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095116323]
[2020-09-24 17:01:14,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:01:14,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 17:01:14,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554614822]
[2020-09-24 17:01:14,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 17:01:14,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:01:14,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 17:01:14,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 17:01:14,715 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states.
[2020-09-24 17:01:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:01:15,023 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions.
[2020-09-24 17:01:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-24 17:01:15,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34
[2020-09-24 17:01:15,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:01:15,053 INFO L225 Difference]: With dead ends: 164
[2020-09-24 17:01:15,054 INFO L226 Difference]: Without dead ends: 81
[2020-09-24 17:01:15,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 17:01:15,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2020-09-24 17:01:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81.
[2020-09-24 17:01:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-09-24 17:01:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions.
[2020-09-24 17:01:15,115 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 34
[2020-09-24 17:01:15,116 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:01:15,116 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions.
[2020-09-24 17:01:15,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 17:01:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions.
[2020-09-24 17:01:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-09-24 17:01:15,119 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 17:01:15,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:01:15,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 17:01:15,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:01:15,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:01:15,121 INFO L82 PathProgramCache]: Analyzing trace with hash -630897281, now seen corresponding path program 1 times
[2020-09-24 17:01:15,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:01:15,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086169132]
[2020-09-24 17:01:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:01:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:15,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:15,291 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:15,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54
[2020-09-24 17:01:15,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:15,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146
[2020-09-24 17:01:15,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37
[2020-09-24 17:01:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 17:01:15,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:01:15,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:01:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:15,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:15,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 17:01:15,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:15,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-24 17:01:15,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:01:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:01:15,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:01:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:01:15,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 17:01:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:15,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:15,531 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:15,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-09-24 17:01:15,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:15,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142
[2020-09-24 17:01:15,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-09-24 17:01:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 17:01:15,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:01:15,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 17:01:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:15,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:15,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:15,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-09-24 17:01:15,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:15,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72
[2020-09-24 17:01:15,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:01:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-09-24 17:01:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:01:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:01:15,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086169132]
[2020-09-24 17:01:15,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:01:15,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-24 17:01:15,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921307733]
[2020-09-24 17:01:15,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 17:01:15,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:01:15,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 17:01:15,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-24 17:01:15,686 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 6 states.
[2020-09-24 17:01:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:01:15,973 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions.
[2020-09-24 17:01:15,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-24 17:01:15,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43
[2020-09-24 17:01:15,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:01:15,980 INFO L225 Difference]: With dead ends: 117
[2020-09-24 17:01:15,980 INFO L226 Difference]: Without dead ends: 86
[2020-09-24 17:01:15,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-24 17:01:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2020-09-24 17:01:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85.
[2020-09-24 17:01:16,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-09-24 17:01:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions.
[2020-09-24 17:01:16,020 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 43
[2020-09-24 17:01:16,020 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:01:16,021 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions.
[2020-09-24 17:01:16,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 17:01:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions.
[2020-09-24 17:01:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-09-24 17:01:16,026 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 17:01:16,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:01:16,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 17:01:16,026 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:01:16,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:01:16,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1020330010, now seen corresponding path program 1 times
[2020-09-24 17:01:16,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:01:16,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106601692]
[2020-09-24 17:01:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:01:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:16,212 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:16,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55
[2020-09-24 17:01:16,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:16,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154
[2020-09-24 17:01:16,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38
[2020-09-24 17:01:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 17:01:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:01:16,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:01:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:16,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:16,254 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:16,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 17:01:16,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:16,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 17:01:16,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:16,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:01:16,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:01:16,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:01:16,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:01:16,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 17:01:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:16,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:16,362 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:16,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 17:01:16,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:16,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75
[2020-09-24 17:01:16,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22
[2020-09-24 17:01:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 17:01:16,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:01:16,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 17:01:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:16,462 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:16,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-24 17:01:16,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:16,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62
[2020-09-24 17:01:16,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:01:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-24 17:01:16,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:01:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:01:16,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106601692]
[2020-09-24 17:01:16,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:01:16,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-24 17:01:16,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15443]
[2020-09-24 17:01:16,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 17:01:16,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:01:16,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 17:01:16,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-24 17:01:16,497 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states.
[2020-09-24 17:01:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:01:16,734 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions.
[2020-09-24 17:01:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-24 17:01:16,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44
[2020-09-24 17:01:16,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:01:16,737 INFO L225 Difference]: With dead ends: 121
[2020-09-24 17:01:16,737 INFO L226 Difference]: Without dead ends: 90
[2020-09-24 17:01:16,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-24 17:01:16,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-09-24 17:01:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85.
[2020-09-24 17:01:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-09-24 17:01:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions.
[2020-09-24 17:01:16,749 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 44
[2020-09-24 17:01:16,749 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:01:16,749 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions.
[2020-09-24 17:01:16,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 17:01:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions.
[2020-09-24 17:01:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-09-24 17:01:16,751 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 17:01:16,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:01:16,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 17:01:16,752 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:01:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:01:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1154617628, now seen corresponding path program 1 times
[2020-09-24 17:01:16,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:01:16,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407919792]
[2020-09-24 17:01:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:01:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:16,867 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:16,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 17:01:16,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:16,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99
[2020-09-24 17:01:16,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39
[2020-09-24 17:01:16,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 17:01:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:01:16,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:01:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:16,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:16,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 17:01:16,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 17:01:16,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:01:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:01:16,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:01:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:01:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 17:01:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:16,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:16,995 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:16,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-24 17:01:16,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:16,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69
[2020-09-24 17:01:16,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:16,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:16,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23
[2020-09-24 17:01:16,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 17:01:16,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:01:17,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 17:01:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:17,081 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:17,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-24 17:01:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55
[2020-09-24 17:01:17,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:01:17,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-09-24 17:01:17,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:01:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:01:17,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407919792]
[2020-09-24 17:01:17,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:01:17,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-24 17:01:17,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852339983]
[2020-09-24 17:01:17,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 17:01:17,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:01:17,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 17:01:17,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-24 17:01:17,106 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states.
[2020-09-24 17:01:17,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:01:17,302 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions.
[2020-09-24 17:01:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-24 17:01:17,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45
[2020-09-24 17:01:17,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:01:17,305 INFO L225 Difference]: With dead ends: 125
[2020-09-24 17:01:17,305 INFO L226 Difference]: Without dead ends: 94
[2020-09-24 17:01:17,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-24 17:01:17,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2020-09-24 17:01:17,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85.
[2020-09-24 17:01:17,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-09-24 17:01:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions.
[2020-09-24 17:01:17,318 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 45
[2020-09-24 17:01:17,318 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:01:17,319 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions.
[2020-09-24 17:01:17,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 17:01:17,319 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions.
[2020-09-24 17:01:17,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-09-24 17:01:17,323 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 17:01:17,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:01:17,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 17:01:17,323 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:01:17,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:01:17,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1681903777, now seen corresponding path program 1 times
[2020-09-24 17:01:17,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:01:17,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153849228]
[2020-09-24 17:01:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:01:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:17,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:17,455 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:17,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-09-24 17:01:17,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:17,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108
[2020-09-24 17:01:17,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:17,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:17,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40
[2020-09-24 17:01:17,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 17:01:17,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:01:17,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:01:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:17,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:17,502 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:17,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 17:01:17,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 17:01:17,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:01:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:01:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:01:17,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:01:17,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 17:01:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:17,602 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:17,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36
[2020-09-24 17:01:17,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:17,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68
[2020-09-24 17:01:17,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:17,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-09-24 17:01:17,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 17:01:17,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:01:17,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 17:01:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:01:17,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:01:17,683 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:01:17,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 17:01:17,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:01:17,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53
[2020-09-24 17:01:17,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:01:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 17:01:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:01:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-24 17:01:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:01:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:01:17,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153849228]
[2020-09-24 17:01:17,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:01:17,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-24 17:01:17,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944126925]
[2020-09-24 17:01:17,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 17:01:17,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:01:17,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 17:01:17,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-24 17:01:17,705 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states.
[2020-09-24 17:01:17,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:01:17,909 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions.
[2020-09-24 17:01:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-24 17:01:17,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46
[2020-09-24 17:01:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:01:17,911 INFO L225 Difference]: With dead ends: 121
[2020-09-24 17:01:17,911 INFO L226 Difference]: Without dead ends: 90
[2020-09-24 17:01:17,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-24 17:01:17,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-09-24 17:01:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85.
[2020-09-24 17:01:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-09-24 17:01:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions.
[2020-09-24 17:01:17,921 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 46
[2020-09-24 17:01:17,921 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:01:17,921 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions.
[2020-09-24 17:01:17,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 17:01:17,922 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions.
[2020-09-24 17:01:17,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-09-24 17:01:17,923 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 17:01:17,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:01:17,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 17:01:17,923 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:01:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:01:17,924 INFO L82 PathProgramCache]: Analyzing trace with hash -969429089, now seen corresponding path program 1 times
[2020-09-24 17:01:17,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:01:17,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590957270]
[2020-09-24 17:01:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:01:17,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 17:01:17,942 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 17:01:17,942 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 17:01:17,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 17:01:17,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:01:17 BoogieIcfgContainer
[2020-09-24 17:01:17,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 17:01:17,974 INFO L168 Benchmark]: Toolchain (without parser) took 5241.10 ms. Allocated memory was 147.3 MB in the beginning and 244.8 MB in the end (delta: 97.5 MB). Free memory was 103.2 MB in the beginning and 155.0 MB in the end (delta: -51.8 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB.
[2020-09-24 17:01:17,975 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
[2020-09-24 17:01:17,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.60 ms. Allocated memory is still 147.3 MB. Free memory was 102.5 MB in the beginning and 91.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB.
[2020-09-24 17:01:17,977 INFO L168 Benchmark]: Boogie Preprocessor took 143.51 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 91.7 MB in the beginning and 181.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-09-24 17:01:17,978 INFO L168 Benchmark]: RCFGBuilder took 553.99 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 156.9 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB.
[2020-09-24 17:01:17,979 INFO L168 Benchmark]: TraceAbstraction took 4090.38 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 156.3 MB in the beginning and 155.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB.
[2020-09-24 17:01:17,983 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.30 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 443.60 ms. Allocated memory is still 147.3 MB. Free memory was 102.5 MB in the beginning and 91.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 143.51 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 91.7 MB in the beginning and 181.0 MB in the end (delta: -89.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 553.99 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 156.9 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 4090.38 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 156.3 MB in the beginning and 155.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72.
Possible FailurePath:
[L72] float x = -0.0f;
[L73] float y = 0.0f;
[L75] CALL, EXPR fmax_float(x, y)
[L43] CALL, EXPR __fpclassify_float(x)
[L20] __uint32_t w;
[L23] ieee_float_shape_type gf_u;
[L24] gf_u.value = (x)
[L25] EXPR gf_u.word
[L25] (w) = gf_u.word
[L28] COND FALSE !(w == 0x00000000 || w == 0x80000000)
[L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) ||
(w >= 0x80800000 && w <= 0xff7fffff))
[L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) ||
(w >= 0x80000001 && w <= 0x807fffff))
[L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000)
[L39] return 0;
[L43] RET, EXPR __fpclassify_float(x)
[L43] COND TRUE __fpclassify_float(x) == 0
[L44] return y;
[L75] RET, EXPR fmax_float(x, y)
[L75] float res = fmax_float(x, y);
[L78] EXPR res == 0.0f && __signbit_float(res) == 0
[L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0)
[L79] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 441 SDtfs, 89 SDslu, 915 SDs, 0 SdLazy, 611 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 17222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces
Received shutdown request...