/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=DEEPEST --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_1252b.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 00:51:31,967 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 00:51:31,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 00:51:31,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 00:51:31,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 00:51:32,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 00:51:32,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 00:51:32,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 00:51:32,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 00:51:32,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 00:51:32,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 00:51:32,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 00:51:32,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 00:51:32,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 00:51:32,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 00:51:32,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 00:51:32,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 00:51:32,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 00:51:32,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 00:51:32,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 00:51:32,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 00:51:32,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 00:51:32,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 00:51:32,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 00:51:32,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 00:51:32,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 00:51:32,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 00:51:32,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 00:51:32,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 00:51:32,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 00:51:32,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 00:51:32,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 00:51:32,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 00:51:32,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 00:51:32,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 00:51:32,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 00:51:32,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 00:51:32,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 00:51:32,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 00:51:32,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 00:51:32,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 00:51:32,048 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 00:51:32,082 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 00:51:32,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 00:51:32,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 00:51:32,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 00:51:32,086 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 00:51:32,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 00:51:32,086 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 00:51:32,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 00:51:32,087 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 00:51:32,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 00:51:32,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 00:51:32,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 00:51:32,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 00:51:32,089 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 00:51:32,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 00:51:32,090 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 00:51:32,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 00:51:32,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 00:51:32,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 00:51:32,091 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 00:51:32,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 00:51:32,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 00:51:32,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 00:51:32,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 00:51:32,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 00:51:32,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 00:51:32,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 00:51:32,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 00:51:32,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 00:51:32,093 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true;
[2020-09-25 00:51:32,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 00:51:32,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 00:51:32,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 00:51:32,614 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 00:51:32,615 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 00:51:32,616 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c
[2020-09-25 00:51:32,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e5c3098a/ea3553129b024a87b1d7613dc3526c1c/FLAGadfad548f
[2020-09-25 00:51:33,319 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 00:51:33,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c
[2020-09-25 00:51:33,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e5c3098a/ea3553129b024a87b1d7613dc3526c1c/FLAGadfad548f
[2020-09-25 00:51:33,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e5c3098a/ea3553129b024a87b1d7613dc3526c1c
[2020-09-25 00:51:33,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 00:51:33,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 00:51:33,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 00:51:33,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 00:51:33,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 00:51:33,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:51:33" (1/1) ...
[2020-09-25 00:51:33,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4576ff6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:33, skipping insertion in model container
[2020-09-25 00:51:33,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:51:33" (1/1) ...
[2020-09-25 00:51:33,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 00:51:33,717 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 00:51:33,956 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 00:51:33,961 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 00:51:33,995 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 00:51:34,026 INFO L208 MainTranslator]: Completed translation
[2020-09-25 00:51:34,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:34 WrapperNode
[2020-09-25 00:51:34,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 00:51:34,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 00:51:34,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 00:51:34,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 00:51:34,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:34" (1/1) ...
[2020-09-25 00:51:34,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:34" (1/1) ...
[2020-09-25 00:51:34,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:34" (1/1) ...
[2020-09-25 00:51:34,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:34" (1/1) ...
[2020-09-25 00:51:34,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:34" (1/1) ...
[2020-09-25 00:51:34,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:34" (1/1) ...
[2020-09-25 00:51:34,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:34" (1/1) ...
[2020-09-25 00:51:34,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 00:51:34,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 00:51:34,153 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 00:51:34,153 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 00:51:34,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:34" (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 00:51:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 00:51:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 00:51:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float
[2020-09-25 00:51:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float
[2020-09-25 00:51:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float
[2020-09-25 00:51:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 00:51:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 00:51:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float
[2020-09-25 00:51:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float
[2020-09-25 00:51:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 00:51:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-25 00:51:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 00:51:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 00:51:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float
[2020-09-25 00:51:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float
[2020-09-25 00:51:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 00:51:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 00:51:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 00:51:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-25 00:51:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 00:51:34,666 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 00:51:34,667 INFO L295 CfgBuilder]: Removed 4 assume(true) statements.
[2020-09-25 00:51:34,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:51:34 BoogieIcfgContainer
[2020-09-25 00:51:34,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 00:51:34,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 00:51:34,674 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 00:51:34,678 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 00:51:34,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:51:33" (1/3) ...
[2020-09-25 00:51:34,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbfede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:51:34, skipping insertion in model container
[2020-09-25 00:51:34,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:51:34" (2/3) ...
[2020-09-25 00:51:34,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbfede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:51:34, skipping insertion in model container
[2020-09-25 00:51:34,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:51:34" (3/3) ...
[2020-09-25 00:51:34,682 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c
[2020-09-25 00:51:34,693 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 00:51:34,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 00:51:34,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 00:51:34,753 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 00:51:34,753 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 00:51:34,753 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 00:51:34,753 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 00:51:34,753 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 00:51:34,754 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 00:51:34,754 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 00:51:34,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 00:51:34,777 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states.
[2020-09-25 00:51:34,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-09-25 00:51:34,787 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 00:51:34,788 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]
[2020-09-25 00:51:34,789 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 00:51:34,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 00:51:34,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2131665852, now seen corresponding path program 1 times
[2020-09-25 00:51:34,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 00:51:34,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584699124]
[2020-09-25 00:51:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 00:51:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:34,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:35,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:35,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:35,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-25 00:51:35,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 00:51:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349
[2020-09-25 00:51:35,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28
[2020-09-25 00:51:35,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 00:51:35,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 00:51:35,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 00:51:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:35,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:35,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:35,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 00:51:35,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:35,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-25 00:51:35,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 00:51:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 00:51:35,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 00:51:35,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:35,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-25 00:51:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:35,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:35,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:35,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-25 00:51:35,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 00:51:35,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-09-25 00:51:35,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:35,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 00:51:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 00:51:35,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:35,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 00:51:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:35,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:35,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:35,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 00:51:35,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 00:51:35,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-25 00:51:35,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 00:51:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-09-25 00:51:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 00:51:35,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:35,568 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 00:51:35,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584699124]
[2020-09-25 00:51:35,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 00:51:35,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 00:51:35,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930776545]
[2020-09-25 00:51:35,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 00:51:35,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 00:51:35,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 00:51:35,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 00:51:35,608 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 5 states.
[2020-09-25 00:51:35,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 00:51:35,930 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions.
[2020-09-25 00:51:35,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-25 00:51:35,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34
[2020-09-25 00:51:35,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 00:51:35,946 INFO L225 Difference]: With dead ends: 164
[2020-09-25 00:51:35,947 INFO L226 Difference]: Without dead ends: 81
[2020-09-25 00:51:35,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 00:51:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2020-09-25 00:51:36,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81.
[2020-09-25 00:51:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2020-09-25 00:51:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions.
[2020-09-25 00:51:36,026 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 34
[2020-09-25 00:51:36,026 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 00:51:36,027 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions.
[2020-09-25 00:51:36,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 00:51:36,027 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions.
[2020-09-25 00:51:36,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-09-25 00:51:36,030 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 00:51:36,031 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]
[2020-09-25 00:51:36,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 00:51:36,031 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 00:51:36,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 00:51:36,032 INFO L82 PathProgramCache]: Analyzing trace with hash -630897281, now seen corresponding path program 1 times
[2020-09-25 00:51:36,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 00:51:36,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201153246]
[2020-09-25 00:51:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 00:51:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:36,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:36,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:36,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54
[2020-09-25 00:51:36,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:36,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189
[2020-09-25 00:51:36,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:36,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37
[2020-09-25 00:51:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 00:51:36,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 00:51:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:36,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:36,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 00:51:36,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:36,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 00:51:36,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 00:51:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 00:51:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 00:51:36,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:36,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-25 00:51:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:36,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:36,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:36,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-09-25 00:51:36,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:36,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83
[2020-09-25 00:51:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-09-25 00:51:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 00:51:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 00:51:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:36,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:36,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:36,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-09-25 00:51:36,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:36,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60
[2020-09-25 00:51:36,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:36,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 00:51:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-09-25 00:51:36,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:36,535 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 00:51:36,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201153246]
[2020-09-25 00:51:36,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 00:51:36,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 00:51:36,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245054756]
[2020-09-25 00:51:36,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 00:51:36,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 00:51:36,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 00:51:36,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 00:51:36,540 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 6 states.
[2020-09-25 00:51:36,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 00:51:36,794 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions.
[2020-09-25 00:51:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 00:51:36,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43
[2020-09-25 00:51:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 00:51:36,800 INFO L225 Difference]: With dead ends: 117
[2020-09-25 00:51:36,800 INFO L226 Difference]: Without dead ends: 86
[2020-09-25 00:51:36,801 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
[2020-09-25 00:51:36,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2020-09-25 00:51:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85.
[2020-09-25 00:51:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-09-25 00:51:36,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions.
[2020-09-25 00:51:36,837 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 43
[2020-09-25 00:51:36,838 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 00:51:36,841 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions.
[2020-09-25 00:51:36,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 00:51:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions.
[2020-09-25 00:51:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2020-09-25 00:51:36,843 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 00:51:36,843 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]
[2020-09-25 00:51:36,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 00:51:36,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 00:51:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 00:51:36,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1020330010, now seen corresponding path program 1 times
[2020-09-25 00:51:36,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 00:51:36,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641726703]
[2020-09-25 00:51:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 00:51:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:36,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:37,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:37,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55
[2020-09-25 00:51:37,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:37,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139
[2020-09-25 00:51:37,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:37,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38
[2020-09-25 00:51:37,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 00:51:37,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 00:51:37,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 00:51:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:37,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:37,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:37,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 00:51:37,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:37,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-25 00:51:37,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 00:51:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 00:51:37,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 00:51:37,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 00:51:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-25 00:51:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:37,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:37,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-25 00:51:37,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:37,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70
[2020-09-25 00:51:37,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:37,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:37,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22
[2020-09-25 00:51:37,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 00:51:37,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 00:51:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:37,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:37,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:37,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-09-25 00:51:37,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:37,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59
[2020-09-25 00:51:37,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 00:51:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18
[2020-09-25 00:51:37,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:37,276 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 00:51:37,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641726703]
[2020-09-25 00:51:37,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 00:51:37,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 00:51:37,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172354746]
[2020-09-25 00:51:37,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 00:51:37,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 00:51:37,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 00:51:37,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 00:51:37,279 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states.
[2020-09-25 00:51:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 00:51:37,494 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions.
[2020-09-25 00:51:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 00:51:37,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44
[2020-09-25 00:51:37,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 00:51:37,497 INFO L225 Difference]: With dead ends: 121
[2020-09-25 00:51:37,497 INFO L226 Difference]: Without dead ends: 90
[2020-09-25 00:51:37,498 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
[2020-09-25 00:51:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-09-25 00:51:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85.
[2020-09-25 00:51:37,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-09-25 00:51:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions.
[2020-09-25 00:51:37,509 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 44
[2020-09-25 00:51:37,509 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 00:51:37,510 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions.
[2020-09-25 00:51:37,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 00:51:37,510 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions.
[2020-09-25 00:51:37,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-09-25 00:51:37,512 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 00:51:37,512 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]
[2020-09-25 00:51:37,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 00:51:37,512 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 00:51:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 00:51:37,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1154617628, now seen corresponding path program 1 times
[2020-09-25 00:51:37,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 00:51:37,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216413802]
[2020-09-25 00:51:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 00:51:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:37,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:37,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:37,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-25 00:51:37,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97
[2020-09-25 00:51:37,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39
[2020-09-25 00:51:37,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 00:51:37,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 00:51:37,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 00:51:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:37,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:37,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 00:51:37,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 00:51:37,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 00:51:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 00:51:37,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 00:51:37,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 00:51:37,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-25 00:51:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:37,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:37,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:37,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-25 00:51:37,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74
[2020-09-25 00:51:37,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23
[2020-09-25 00:51:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 00:51:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:37,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 00:51:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:37,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:37,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:37,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-25 00:51:37,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:37,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62
[2020-09-25 00:51:37,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 00:51:37,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19
[2020-09-25 00:51:37,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:37,874 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 00:51:37,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216413802]
[2020-09-25 00:51:37,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 00:51:37,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 00:51:37,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269297479]
[2020-09-25 00:51:37,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 00:51:37,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 00:51:37,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 00:51:37,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 00:51:37,877 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states.
[2020-09-25 00:51:38,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 00:51:38,084 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions.
[2020-09-25 00:51:38,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 00:51:38,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45
[2020-09-25 00:51:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 00:51:38,087 INFO L225 Difference]: With dead ends: 125
[2020-09-25 00:51:38,087 INFO L226 Difference]: Without dead ends: 94
[2020-09-25 00:51:38,088 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
[2020-09-25 00:51:38,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2020-09-25 00:51:38,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85.
[2020-09-25 00:51:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-09-25 00:51:38,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions.
[2020-09-25 00:51:38,098 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 45
[2020-09-25 00:51:38,099 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 00:51:38,099 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions.
[2020-09-25 00:51:38,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 00:51:38,099 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions.
[2020-09-25 00:51:38,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-09-25 00:51:38,100 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 00:51:38,101 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]
[2020-09-25 00:51:38,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 00:51:38,101 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 00:51:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 00:51:38,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1681903777, now seen corresponding path program 1 times
[2020-09-25 00:51:38,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 00:51:38,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155616777]
[2020-09-25 00:51:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 00:51:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:38,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:38,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-09-25 00:51:38,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:38,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104
[2020-09-25 00:51:38,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40
[2020-09-25 00:51:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 00:51:38,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:51:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 00:51:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:38,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:38,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:38,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 00:51:38,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 00:51:38,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 00:51:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 00:51:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 00:51:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 00:51:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-25 00:51:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:38,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:38,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:38,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36
[2020-09-25 00:51:38,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91
[2020-09-25 00:51:38,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-09-25 00:51:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 00:51:38,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 00:51:38,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 00:51:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:51:38,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:51:38,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:51:38,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-25 00:51:38,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:51:38,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66
[2020-09-25 00:51:38,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:51:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 00:51:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 00:51:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-25 00:51:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 00:51:38,519 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 00:51:38,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155616777]
[2020-09-25 00:51:38,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 00:51:38,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 00:51:38,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455043395]
[2020-09-25 00:51:38,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 00:51:38,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 00:51:38,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 00:51:38,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 00:51:38,545 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states.
[2020-09-25 00:51:38,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 00:51:38,746 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions.
[2020-09-25 00:51:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 00:51:38,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46
[2020-09-25 00:51:38,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 00:51:38,748 INFO L225 Difference]: With dead ends: 121
[2020-09-25 00:51:38,748 INFO L226 Difference]: Without dead ends: 90
[2020-09-25 00:51:38,749 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
[2020-09-25 00:51:38,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-09-25 00:51:38,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85.
[2020-09-25 00:51:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-09-25 00:51:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions.
[2020-09-25 00:51:38,758 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 46
[2020-09-25 00:51:38,759 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 00:51:38,759 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions.
[2020-09-25 00:51:38,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 00:51:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions.
[2020-09-25 00:51:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-09-25 00:51:38,760 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 00:51:38,761 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]
[2020-09-25 00:51:38,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 00:51:38,761 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 00:51:38,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 00:51:38,762 INFO L82 PathProgramCache]: Analyzing trace with hash -969429089, now seen corresponding path program 1 times
[2020-09-25 00:51:38,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 00:51:38,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855579533]
[2020-09-25 00:51:38,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 00:51:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 00:51:38,780 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 00:51:38,780 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 00:51:38,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-25 00:51:38,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:51:38 BoogieIcfgContainer
[2020-09-25 00:51:38,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 00:51:38,814 INFO L168 Benchmark]: Toolchain (without parser) took 5160.96 ms. Allocated memory was 136.3 MB in the beginning and 254.3 MB in the end (delta: 118.0 MB). Free memory was 99.0 MB in the beginning and 193.7 MB in the end (delta: -94.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB.
[2020-09-25 00:51:38,816 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-09-25 00:51:38,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.29 ms. Allocated memory is still 136.3 MB. Free memory was 98.3 MB in the beginning and 87.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB.
[2020-09-25 00:51:38,818 INFO L168 Benchmark]: Boogie Preprocessor took 124.22 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 87.6 MB in the beginning and 175.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
[2020-09-25 00:51:38,819 INFO L168 Benchmark]: RCFGBuilder took 520.26 ms. Allocated memory is still 198.7 MB. Free memory was 175.7 MB in the beginning and 152.4 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB.
[2020-09-25 00:51:38,819 INFO L168 Benchmark]: TraceAbstraction took 4136.84 ms. Allocated memory was 198.7 MB in the beginning and 254.3 MB in the end (delta: 55.6 MB). Free memory was 151.7 MB in the beginning and 193.7 MB in the end (delta: -42.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
[2020-09-25 00:51:38,823 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 366.29 ms. Allocated memory is still 136.3 MB. Free memory was 98.3 MB in the beginning and 87.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 124.22 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 87.6 MB in the beginning and 175.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 520.26 ms. Allocated memory is still 198.7 MB. Free memory was 175.7 MB in the beginning and 152.4 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 4136.84 ms. Allocated memory was 198.7 MB in the beginning and 254.3 MB in the end (delta: 55.6 MB). Free memory was 151.7 MB in the beginning and 193.7 MB in the end (delta: -42.0 MB). Peak memory consumption was 13.5 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 74.
Possible FailurePath:
[L73] float x = 0.0f;
[L74] float y = -0.0f;
[L75] CALL, EXPR fmax_float(x, y)
[L44] CALL, EXPR __fpclassify_float(x)
[L21] __uint32_t w;
[L24] ieee_float_shape_type gf_u;
[L25] gf_u.value = (x)
[L26] EXPR gf_u.word
[L26] (w) = gf_u.word
[L29] COND FALSE !(w == 0x00000000 || w == 0x80000000)
[L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) ||
(w >= 0x80800000 && w <= 0xff7fffff))
[L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) ||
(w >= 0x80000001 && w <= 0x807fffff))
[L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000)
[L40] return 0;
[L44] RET, EXPR __fpclassify_float(x)
[L44] COND TRUE __fpclassify_float(x) == 0
[L45] 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: 4.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 441 SDtfs, 89 SDslu, 994 SDs, 0 SdLazy, 628 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 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, 2.2s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 17354 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...