/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-b7b32d2
[2021-02-21 15:48:01,969 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-21 15:48:01,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-21 15:48:02,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-21 15:48:02,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-21 15:48:02,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-21 15:48:02,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-21 15:48:02,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-02-21 15:48:02,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-02-21 15:48:02,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-02-21 15:48:02,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-02-21 15:48:02,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-02-21 15:48:02,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-02-21 15:48:02,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-02-21 15:48:02,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-21 15:48:02,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-21 15:48:02,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-21 15:48:02,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-21 15:48:02,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-21 15:48:02,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-21 15:48:02,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-21 15:48:02,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-21 15:48:02,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-21 15:48:02,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-21 15:48:02,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-02-21 15:48:02,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-02-21 15:48:02,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2021-02-21 15:48:02,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-02-21 15:48:02,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-02-21 15:48:02,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
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[2021-02-21 15:48:02,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-21 15:48:02,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-21 15:48:02,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2021-02-21 15:48:02,101 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-21 15:48:02,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-21 15:48:02,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-02-21 15:48:02,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-02-21 15:48:02,104 INFO L138 SettingsManager]: * Use SBE=true
[2021-02-21 15:48:02,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-21 15:48:02,105 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-21 15:48:02,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-21 15:48:02,105 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-21 15:48:02,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-21 15:48:02,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-21 15:48:02,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-21 15:48:02,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-21 15:48:02,107 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-21 15:48:02,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-21 15:48:02,107 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-21 15:48:02,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-21 15:48:02,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-21 15:48:02,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-02-21 15:48:02,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-21 15:48:02,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-21 15:48:02,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-21 15:48:02,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-02-21 15:48:02,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-02-21 15:48:02,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-02-21 15:48:02,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-02-21 15:48:02,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-21 15:48:02,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-02-21 15:48:02,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-21 15:48:02,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-21 15:48:02,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-21 15:48:02,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-21 15:48:02,524 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-21 15:48:02,525 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-21 15:48:02,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c
[2021-02-21 15:48:02,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51aec9f3d/17e7fc2020654bc380d8cf79b682868f/FLAG73573a462
[2021-02-21 15:48:03,318 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-21 15:48:03,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c
[2021-02-21 15:48:03,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51aec9f3d/17e7fc2020654bc380d8cf79b682868f/FLAG73573a462
[2021-02-21 15:48:03,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51aec9f3d/17e7fc2020654bc380d8cf79b682868f
[2021-02-21 15:48:03,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-21 15:48:03,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-21 15:48:03,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-21 15:48:03,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-21 15:48:03,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-21 15:48:03,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:48:03" (1/1) ...
[2021-02-21 15:48:03,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0689f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:03, skipping insertion in model container
[2021-02-21 15:48:03,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:48:03" (1/1) ...
[2021-02-21 15:48:03,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-21 15:48:03,759 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-21 15:48:03,926 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c[1897,1910]
[2021-02-21 15:48:03,929 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-21 15:48:03,938 INFO L203 MainTranslator]: Completed pre-run
[2021-02-21 15:48:03,964 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c[1897,1910]
[2021-02-21 15:48:03,964 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-21 15:48:03,981 INFO L208 MainTranslator]: Completed translation
[2021-02-21 15:48:03,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:03 WrapperNode
[2021-02-21 15:48:03,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-21 15:48:03,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-21 15:48:03,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-21 15:48:03,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-21 15:48:03,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:03" (1/1) ...
[2021-02-21 15:48:03,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:03" (1/1) ...
[2021-02-21 15:48:04,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:03" (1/1) ...
[2021-02-21 15:48:04,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:03" (1/1) ...
[2021-02-21 15:48:04,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:03" (1/1) ...
[2021-02-21 15:48:04,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:03" (1/1) ...
[2021-02-21 15:48:04,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:03" (1/1) ...
[2021-02-21 15:48:04,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-21 15:48:04,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-21 15:48:04,030 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-21 15:48:04,030 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-21 15:48:04,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:03" (1/1) ...
No working directory specified, using /storage/repos/ultimate/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
[2021-02-21 15:48:04,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-21 15:48:04,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-21 15:48:04,133 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-21 15:48:04,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float
[2021-02-21 15:48:04,133 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float
[2021-02-21 15:48:04,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float
[2021-02-21 15:48:04,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-21 15:48:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-21 15:48:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-21 15:48:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-21 15:48:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-21 15:48:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float
[2021-02-21 15:48:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2021-02-21 15:48:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-21 15:48:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-21 15:48:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float
[2021-02-21 15:48:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float
[2021-02-21 15:48:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-21 15:48:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-21 15:48:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-21 15:48:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-21 15:48:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2021-02-21 15:48:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-21 15:48:04,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-21 15:48:04,630 INFO L299 CfgBuilder]: Removed 4 assume(true) statements.
[2021-02-21 15:48:04,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:48:04 BoogieIcfgContainer
[2021-02-21 15:48:04,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-21 15:48:04,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-21 15:48:04,634 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-21 15:48:04,638 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-21 15:48:04,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:48:03" (1/3) ...
[2021-02-21 15:48:04,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc02044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:48:04, skipping insertion in model container
[2021-02-21 15:48:04,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:48:03" (2/3) ...
[2021-02-21 15:48:04,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc02044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:48:04, skipping insertion in model container
[2021-02-21 15:48:04,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:48:04" (3/3) ...
[2021-02-21 15:48:04,642 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c
[2021-02-21 15:48:04,649 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-02-21 15:48:04,654 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-21 15:48:04,672 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-21 15:48:04,701 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-21 15:48:04,701 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-21 15:48:04,701 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-02-21 15:48:04,701 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-21 15:48:04,702 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-21 15:48:04,702 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-21 15:48:04,702 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-21 15:48:04,702 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-21 15:48:04,722 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states.
[2021-02-21 15:48:04,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-02-21 15:48:04,729 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-21 15:48:04,730 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]
[2021-02-21 15:48:04,731 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 15:48:04,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 15:48:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1701413730, now seen corresponding path program 1 times
[2021-02-21 15:48:04,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 15:48:04,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690149894]
[2021-02-21 15:48:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 15:48:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:05,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 15:48:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:05,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-02-21 15:48:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:05,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-02-21 15:48:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:05,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 15:48:05,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690149894]
[2021-02-21 15:48:05,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 15:48:05,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-02-21 15:48:05,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116392368]
[2021-02-21 15:48:05,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-02-21 15:48:05,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-21 15:48:05,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-02-21 15:48:05,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-02-21 15:48:05,249 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states.
[2021-02-21 15:48:05,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 15:48:05,516 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions.
[2021-02-21 15:48:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-02-21 15:48:05,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22
[2021-02-21 15:48:05,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 15:48:05,527 INFO L225 Difference]: With dead ends: 79
[2021-02-21 15:48:05,528 INFO L226 Difference]: Without dead ends: 40
[2021-02-21 15:48:05,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-02-21 15:48:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2021-02-21 15:48:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2021-02-21 15:48:05,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2021-02-21 15:48:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions.
[2021-02-21 15:48:05,588 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22
[2021-02-21 15:48:05,588 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-21 15:48:05,588 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions.
[2021-02-21 15:48:05,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-02-21 15:48:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions.
[2021-02-21 15:48:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-02-21 15:48:05,591 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-21 15:48:05,591 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]
[2021-02-21 15:48:05,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-21 15:48:05,592 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 15:48:05,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 15:48:05,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1066470796, now seen corresponding path program 1 times
[2021-02-21 15:48:05,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 15:48:05,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589422994]
[2021-02-21 15:48:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 15:48:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:05,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 15:48:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:05,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-02-21 15:48:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:05,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 15:48:05,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-02-21 15:48:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:05,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:05,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:05,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 15:48:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 15:48:05,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589422994]
[2021-02-21 15:48:05,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 15:48:05,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-02-21 15:48:05,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199349672]
[2021-02-21 15:48:05,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-02-21 15:48:05,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-21 15:48:05,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-02-21 15:48:05,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-02-21 15:48:05,808 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states.
[2021-02-21 15:48:06,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 15:48:06,065 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions.
[2021-02-21 15:48:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-02-21 15:48:06,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23
[2021-02-21 15:48:06,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 15:48:06,069 INFO L225 Difference]: With dead ends: 59
[2021-02-21 15:48:06,070 INFO L226 Difference]: Without dead ends: 44
[2021-02-21 15:48:06,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2021-02-21 15:48:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2021-02-21 15:48:06,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2021-02-21 15:48:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2021-02-21 15:48:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions.
[2021-02-21 15:48:06,105 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23
[2021-02-21 15:48:06,105 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-21 15:48:06,105 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions.
[2021-02-21 15:48:06,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2021-02-21 15:48:06,106 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions.
[2021-02-21 15:48:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-21 15:48:06,107 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-21 15:48:06,107 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]
[2021-02-21 15:48:06,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-21 15:48:06,108 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 15:48:06,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 15:48:06,109 INFO L82 PathProgramCache]: Analyzing trace with hash 666186437, now seen corresponding path program 1 times
[2021-02-21 15:48:06,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 15:48:06,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582912869]
[2021-02-21 15:48:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 15:48:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:06,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:06,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:06,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:06,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:06,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 15:48:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:06,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:06,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:06,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-02-21 15:48:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:06,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:06,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:06,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:06,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 15:48:06,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:06,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:06,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2021-02-21 15:48:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 15:48:06,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:06,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 15:48:06,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 15:48:06,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 15:48:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 15:48:06,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582912869]
[2021-02-21 15:48:06,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 15:48:06,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-02-21 15:48:06,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199372872]
[2021-02-21 15:48:06,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-02-21 15:48:06,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-21 15:48:06,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-02-21 15:48:06,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-02-21 15:48:06,340 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states.
[2021-02-21 15:48:06,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 15:48:06,560 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions.
[2021-02-21 15:48:06,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-02-21 15:48:06,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26
[2021-02-21 15:48:06,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 15:48:06,564 INFO L225 Difference]: With dead ends: 63
[2021-02-21 15:48:06,565 INFO L226 Difference]: Without dead ends: 48
[2021-02-21 15:48:06,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2021-02-21 15:48:06,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2021-02-21 15:48:06,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44.
[2021-02-21 15:48:06,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2021-02-21 15:48:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions.
[2021-02-21 15:48:06,595 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26
[2021-02-21 15:48:06,596 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-21 15:48:06,596 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions.
[2021-02-21 15:48:06,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2021-02-21 15:48:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions.
[2021-02-21 15:48:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-02-21 15:48:06,599 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-21 15:48:06,599 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]
[2021-02-21 15:48:06,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-02-21 15:48:06,599 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 15:48:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 15:48:06,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1130764922, now seen corresponding path program 1 times
[2021-02-21 15:48:06,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-21 15:48:06,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068039393]
[2021-02-21 15:48:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 15:48:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-21 15:48:06,656 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-21 15:48:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-21 15:48:06,704 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-21 15:48:06,741 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-02-21 15:48:06,742 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2021-02-21 15:48:06,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-02-21 15:48:06,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:48:06 BoogieIcfgContainer
[2021-02-21 15:48:06,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-21 15:48:06,801 INFO L168 Benchmark]: Toolchain (without parser) took 3096.34 ms. Allocated memory was 157.3 MB in the beginning and 198.2 MB in the end (delta: 40.9 MB). Free memory was 132.0 MB in the beginning and 130.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 8.0 GB.
[2021-02-21 15:48:06,802 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 157.3 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-21 15:48:06,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.85 ms. Allocated memory is still 157.3 MB. Free memory was 130.8 MB in the beginning and 120.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2021-02-21 15:48:06,803 INFO L168 Benchmark]: Boogie Preprocessor took 45.83 ms. Allocated memory is still 157.3 MB. Free memory was 120.5 MB in the beginning and 118.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-02-21 15:48:06,804 INFO L168 Benchmark]: RCFGBuilder took 602.10 ms. Allocated memory is still 157.3 MB. Free memory was 118.6 MB in the beginning and 135.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB.
[2021-02-21 15:48:06,805 INFO L168 Benchmark]: TraceAbstraction took 2165.96 ms. Allocated memory was 157.3 MB in the beginning and 198.2 MB in the end (delta: 40.9 MB). Free memory was 135.3 MB in the beginning and 130.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB.
[2021-02-21 15:48:06,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25 ms. Allocated memory is still 157.3 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 262.85 ms. Allocated memory is still 157.3 MB. Free memory was 130.8 MB in the beginning and 120.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 45.83 ms. Allocated memory is still 157.3 MB. Free memory was 120.5 MB in the beginning and 118.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 602.10 ms. Allocated memory is still 157.3 MB. Free memory was 118.6 MB in the beginning and 135.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 2165.96 ms. Allocated memory was 157.3 MB in the beginning and 198.2 MB in the end (delta: 40.9 MB). Free memory was 135.3 MB in the beginning and 130.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 81]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someUnaryFLOAToperation at line 74.
Possible FailurePath:
[L74] float x = -0.0f;
[L75] float y = 0.0f;
VAL [y=0]
[L77] CALL, EXPR fmax_float(x, y)
VAL [\old(x)=4286578692, \old(y)=0]
[L45] CALL, EXPR __fpclassify_float(x)
VAL [\old(x)=4286578692]
[L22] __uint32_t w;
VAL [\old(x)=4286578692, x=4286578692]
[L25] ieee_float_shape_type gf_u;
[L26] gf_u.value = (x)
[L27] EXPR gf_u.word
[L27] (w) = gf_u.word
[L30] COND FALSE !(w == 0x00000000 || w == 0x80000000)
VAL [\old(x)=4286578692, w=4286578689, x=4286578692]
[L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) ||
(w >= 0x80800000 && w <= 0xff7fffff))
VAL [\old(x)=4286578692, w=4286578689, x=4286578692]
[L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) ||
(w >= 0x80000001 && w <= 0x807fffff))
VAL [\old(x)=4286578692, w=4286578689, x=4286578692]
[L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000)
[L41] return 0;
VAL [\old(x)=4286578692, \result=0, w=4286578689, x=4286578692]
[L45] RET, EXPR __fpclassify_float(x)
VAL [\old(x)=4286578692, \old(y)=0, __fpclassify_float(x)=0, x=4286578692, y=0]
[L45] COND TRUE __fpclassify_float(x) == 0
[L46] return y;
VAL [\old(x)=4286578692, \old(y)=0, \result=0, x=4286578692, y=0]
[L77] RET, EXPR fmax_float(x, y)
VAL [fmax_float(x, y)=0, x=4286578692, y=0]
[L77] float res = fmax_float(x, y);
[L80] EXPR res == 0.0f && __signbit_float(res) == 0
VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578692, y=0]
[L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0)
[L81] reach_error()
VAL [res=0, x=4286578692, y=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 7 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 24 SDslu, 254 SDs, 0 SdLazy, 180 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 5598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...