/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_1211a.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 05:25:14,393 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 05:25:14,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 05:25:14,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 05:25:14,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 05:25:14,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 05:25:14,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 05:25:14,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 05:25:14,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 05:25:14,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 05:25:14,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 05:25:14,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 05:25:14,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 05:25:14,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 05:25:14,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 05:25:14,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 05:25:14,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 05:25:14,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 05:25:14,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 05:25:14,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 05:25:14,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 05:25:14,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 05:25:14,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 05:25:14,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 05:25:14,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 05:25:14,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 05:25:14,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 05:25:14,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 05:25:14,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 05:25:14,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 05:25:14,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 05:25:14,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 05:25:14,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 05:25:14,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 05:25:14,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 05:25:14,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 05:25:14,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 05:25:14,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 05:25:14,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 05:25:14,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 05:25:14,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 05:25:14,482 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 05:25:14,508 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 05:25:14,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 05:25:14,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 05:25:14,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 05:25:14,510 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 05:25:14,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 05:25:14,511 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 05:25:14,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 05:25:14,511 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 05:25:14,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 05:25:14,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 05:25:14,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 05:25:14,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 05:25:14,512 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 05:25:14,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 05:25:14,513 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 05:25:14,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 05:25:14,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 05:25:14,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 05:25:14,513 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 05:25:14,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 05:25:14,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 05:25:14,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 05:25:14,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 05:25:14,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 05:25:14,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 05:25:14,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 05:25:14,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 05:25:14,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 05:25:14,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;
[2020-09-25 05:25:15,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 05:25:15,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 05:25:15,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 05:25:15,085 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 05:25:15,086 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 05:25:15,088 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1211a.c
[2020-09-25 05:25:15,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d92a74db1/f09ea0edbb6049239f65fc93bde87a50/FLAG68ac30f85
[2020-09-25 05:25:15,645 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 05:25:15,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1211a.c
[2020-09-25 05:25:15,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d92a74db1/f09ea0edbb6049239f65fc93bde87a50/FLAG68ac30f85
[2020-09-25 05:25:15,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d92a74db1/f09ea0edbb6049239f65fc93bde87a50
[2020-09-25 05:25:15,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 05:25:16,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 05:25:16,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 05:25:16,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 05:25:16,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 05:25:16,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:25:15" (1/1) ...
[2020-09-25 05:25:16,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7640d041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:16, skipping insertion in model container
[2020-09-25 05:25:16,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:25:15" (1/1) ...
[2020-09-25 05:25:16,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 05:25:16,055 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 05:25:16,330 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 05:25:16,343 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 05:25:16,381 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 05:25:16,494 INFO L208 MainTranslator]: Completed translation
[2020-09-25 05:25:16,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:16 WrapperNode
[2020-09-25 05:25:16,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 05:25:16,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 05:25:16,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 05:25:16,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 05:25:16,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:16" (1/1) ...
[2020-09-25 05:25:16,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:16" (1/1) ...
[2020-09-25 05:25:16,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:16" (1/1) ...
[2020-09-25 05:25:16,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:16" (1/1) ...
[2020-09-25 05:25:16,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:16" (1/1) ...
[2020-09-25 05:25:16,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:16" (1/1) ...
[2020-09-25 05:25:16,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:16" (1/1) ...
[2020-09-25 05:25:16,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 05:25:16,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 05:25:16,584 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 05:25:16,584 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 05:25:16,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:16" (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 05:25:16,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 05:25:16,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 05:25:16,660 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float
[2020-09-25 05:25:16,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float
[2020-09-25 05:25:16,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float
[2020-09-25 05:25:16,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 05:25:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 05:25:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float
[2020-09-25 05:25:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float
[2020-09-25 05:25:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 05:25:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-25 05:25:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 05:25:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 05:25:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 05:25:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-25 05:25:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float
[2020-09-25 05:25:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float
[2020-09-25 05:25:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 05:25:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real
[2020-09-25 05:25:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 05:25:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 05:25:17,288 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 05:25:17,289 INFO L295 CfgBuilder]: Removed 18 assume(true) statements.
[2020-09-25 05:25:17,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:25:17 BoogieIcfgContainer
[2020-09-25 05:25:17,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 05:25:17,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 05:25:17,306 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 05:25:17,310 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 05:25:17,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:25:15" (1/3) ...
[2020-09-25 05:25:17,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c00eba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:25:17, skipping insertion in model container
[2020-09-25 05:25:17,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:25:16" (2/3) ...
[2020-09-25 05:25:17,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c00eba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:25:17, skipping insertion in model container
[2020-09-25 05:25:17,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:25:17" (3/3) ...
[2020-09-25 05:25:17,315 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1211a.c
[2020-09-25 05:25:17,327 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 05:25:17,340 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 05:25:17,361 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 05:25:17,388 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 05:25:17,388 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 05:25:17,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 05:25:17,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 05:25:17,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 05:25:17,388 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 05:25:17,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 05:25:17,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 05:25:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states.
[2020-09-25 05:25:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-09-25 05:25:17,426 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:25:17,427 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, 1]
[2020-09-25 05:25:17,427 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:25:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:25:17,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1432903932, now seen corresponding path program 1 times
[2020-09-25 05:25:17,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:25:17,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992671112]
[2020-09-25 05:25:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:25:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:25:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:17,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:18,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:25:18,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58
[2020-09-25 05:25:18,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-25 05:25:18,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428
[2020-09-25 05:25:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:25:18,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:25:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:25:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43
[2020-09-25 05:25:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:25:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 05:25:18,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:25:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:25:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:18,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:25:18,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 05:25:18,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:25:18,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 05:25:18,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:25:18,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:25:18,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:25:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:25:18,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:25:18,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:25:18,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 05:25:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:25:18,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:18,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:18,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:25:18,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-09-25 05:25:18,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 05:25:18,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-25 05:25:18,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:25:18,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:25:18,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:25:18,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 05:25:18,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:25:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:25:18,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-09-25 05:25:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:25:18,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:18,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:25:18,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 05:25:18,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:25:18,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-25 05:25:18,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:25:18,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:25:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:25:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-09-25 05:25:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:25:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:25:18,182 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 05:25:18,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992671112]
[2020-09-25 05:25:18,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 05:25:18,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-25 05:25:18,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064372996]
[2020-09-25 05:25:18,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-25 05:25:18,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:25:18,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-25 05:25:18,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-25 05:25:18,222 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 4 states.
[2020-09-25 05:25:18,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:25:18,639 INFO L93 Difference]: Finished difference Result 315 states and 363 transitions.
[2020-09-25 05:25:18,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-25 05:25:18,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47
[2020-09-25 05:25:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:25:18,656 INFO L225 Difference]: With dead ends: 315
[2020-09-25 05:25:18,656 INFO L226 Difference]: Without dead ends: 153
[2020-09-25 05:25:18,662 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
[2020-09-25 05:25:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states.
[2020-09-25 05:25:18,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153.
[2020-09-25 05:25:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states.
[2020-09-25 05:25:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions.
[2020-09-25 05:25:18,731 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 47
[2020-09-25 05:25:18,731 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:25:18,732 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions.
[2020-09-25 05:25:18,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-25 05:25:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions.
[2020-09-25 05:25:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2020-09-25 05:25:18,736 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:25:18,736 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, 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 05:25:18,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 05:25:18,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:25:18,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:25:18,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1562102553, now seen corresponding path program 1 times
[2020-09-25 05:25:18,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:25:18,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851174429]
[2020-09-25 05:25:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:25:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:25:18,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:19,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:25:19,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83
[2020-09-25 05:25:19,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:25:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308
[2020-09-25 05:25:19,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:25:19,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:25:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 05:25:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75
[2020-09-25 05:25:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-09-25 05:25:19,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:25:19,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:25:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:25:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:19,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:25:19,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 05:25:19,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:25:19,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-25 05:25:19,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:25:19,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:25:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:25:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:25:19,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:25:19,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:25:19,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 05:25:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:25:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:19,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:25:19,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-25 05:25:19,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:25:19,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41
[2020-09-25 05:25:19,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:25:19,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:25:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:25:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:25:19,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:25:19,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:25:19,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-09-25 05:25:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:25:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:25:19,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:25:19,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-09-25 05:25:19,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:25:19,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28
[2020-09-25 05:25:19,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:25:19,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:25:19,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:25:19,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:25:19,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:25:19,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:25:19,305 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 05:25:19,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851174429]
[2020-09-25 05:25:19,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 05:25:19,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 05:25:19,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111046206]
[2020-09-25 05:25:19,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 05:25:19,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:25:19,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 05:25:19,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 05:25:19,325 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand 5 states.
[2020-09-25 05:25:19,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:25:19,718 INFO L93 Difference]: Finished difference Result 161 states and 164 transitions.
[2020-09-25 05:25:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-09-25 05:25:19,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72
[2020-09-25 05:25:19,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:25:19,722 INFO L225 Difference]: With dead ends: 161
[2020-09-25 05:25:19,722 INFO L226 Difference]: Without dead ends: 153
[2020-09-25 05:25:19,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 05:25:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states.
[2020-09-25 05:25:19,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153.
[2020-09-25 05:25:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states.
[2020-09-25 05:25:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions.
[2020-09-25 05:25:19,742 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 72
[2020-09-25 05:25:19,742 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:25:19,742 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions.
[2020-09-25 05:25:19,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 05:25:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions.
[2020-09-25 05:25:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2020-09-25 05:25:19,746 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:25:19,749 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, 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 05:25:19,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 05:25:19,750 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:25:19,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:25:19,750 INFO L82 PathProgramCache]: Analyzing trace with hash 934667084, now seen corresponding path program 1 times
[2020-09-25 05:25:19,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:25:19,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322030532]
[2020-09-25 05:25:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:25:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 05:25:19,822 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 05:25:19,823 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 05:25:19,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 05:25:19,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:25:19 BoogieIcfgContainer
[2020-09-25 05:25:19,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 05:25:19,865 INFO L168 Benchmark]: Toolchain (without parser) took 3862.53 ms. Allocated memory was 145.8 MB in the beginning and 247.5 MB in the end (delta: 101.7 MB). Free memory was 101.0 MB in the beginning and 198.5 MB in the end (delta: -97.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
[2020-09-25 05:25:19,867 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
[2020-09-25 05:25:19,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.76 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.4 MB in the beginning and 181.1 MB in the end (delta: -80.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB.
[2020-09-25 05:25:19,869 INFO L168 Benchmark]: Boogie Preprocessor took 87.06 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 178.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB.
[2020-09-25 05:25:19,870 INFO L168 Benchmark]: RCFGBuilder took 719.17 ms. Allocated memory is still 202.4 MB. Free memory was 178.1 MB in the beginning and 140.2 MB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB.
[2020-09-25 05:25:19,872 INFO L168 Benchmark]: TraceAbstraction took 2554.68 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 139.6 MB in the beginning and 198.5 MB in the end (delta: -58.9 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 05:25:19,881 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 490.76 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.4 MB in the beginning and 181.1 MB in the end (delta: -80.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 87.06 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 178.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 719.17 ms. Allocated memory is still 202.4 MB. Free memory was 178.1 MB in the beginning and 140.2 MB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2554.68 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 139.6 MB in the beginning and 198.5 MB in the end (delta: -58.9 MB). There was no memory consumed. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 110]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 109, overapproximation of someBinaryArithmeticFLOAToperation at line 104, overapproximation of bitwiseAnd at line 93.
Possible FailurePath:
[L12] static const float one_modf = 1.0;
[L104] float x = 1.0f / 0.0f;
[L105] float iptr = __VERIFIER_nondet_float();
[L106] CALL, EXPR modf_float(x, &iptr)
[L15] __int32_t i0, j0;
[L16] __uint32_t i;
[L18] ieee_float_shape_type gf_u;
[L19] gf_u.value = (x)
[L20] EXPR gf_u.word
[L20] (i0) = gf_u.word
[L22] j0 = ((i0 >> 23) & 0xff) - 0x7f
[L23] COND TRUE j0 < 23
[L24] COND TRUE j0 < 0
[L26] ieee_float_shape_type sf_u;
[L27] sf_u.word = (i0 & 0x80000000)
[L28] EXPR sf_u.value
[L28] (*iptr) = sf_u.value
[L30] return x;
[L106] RET, EXPR modf_float(x, &iptr)
[L106] float res = modf_float(x, &iptr);
[L109] EXPR \read(iptr)
[L109] CALL, EXPR isinf_float(iptr)
[L87] __int32_t ix;
[L89] ieee_float_shape_type gf_u;
[L90] gf_u.value = (x)
[L91] EXPR gf_u.word
[L91] (ix) = gf_u.word
[L93] ix &= 0x7fffffff
[L94] return ((ix) == 0x7f800000L);
[L109] RET, EXPR isinf_float(iptr)
[L109] isinf_float(iptr) && !(res == 0.0f && __signbit_float(res) == 0)
[L109] EXPR res == 0.0f && __signbit_float(res) == 0
[L109] isinf_float(iptr) && !(res == 0.0f && __signbit_float(res) == 0)
[L109] COND TRUE isinf_float(iptr) && !(res == 0.0f && __signbit_float(res) == 0)
[L110] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 168 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 316 SDtfs, 42 SDslu, 332 SDs, 0 SdLazy, 424 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 11440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...