/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c
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This is Ultimate 0.1.25-d623d84
[2020-07-20 16:27:53,930 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 16:27:53,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 16:27:53,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 16:27:53,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 16:27:53,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 16:27:53,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 16:27:53,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 16:27:53,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 16:27:53,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 16:27:53,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 16:27:53,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 16:27:53,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 16:27:53,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 16:27:53,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 16:27:53,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 16:27:53,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 16:27:53,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 16:27:53,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 16:27:53,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 16:27:53,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 16:27:53,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 16:27:53,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 16:27:53,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 16:27:53,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 16:27:53,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 16:27:53,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 16:27:53,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 16:27:53,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 16:27:53,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 16:27:53,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 16:27:53,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 16:27:53,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 16:27:53,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 16:27:53,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 16:27:53,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 16:27:53,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 16:27:53,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 16:27:53,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 16:27:53,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 16:27:53,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 16:27:53,980 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
[2020-07-20 16:27:53,994 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 16:27:53,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 16:27:53,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 16:27:53,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 16:27:53,996 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 16:27:53,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 16:27:53,997 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 16:27:53,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 16:27:53,997 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 16:27:53,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 16:27:53,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 16:27:53,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 16:27:53,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 16:27:53,998 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 16:27:53,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 16:27:53,998 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 16:27:53,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 16:27:53,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 16:27:53,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 16:27:53,999 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 16:27:53,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 16:27:53,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 16:27:54,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 16:27:54,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 16:27:54,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 16:27:54,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 16:27:54,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:54,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 16:27:54,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 16:27:54,001 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 -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4
[2020-07-20 16:27:54,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 16:27:54,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 16:27:54,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 16:27:54,277 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 16:27:54,277 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 16:27:54,278 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c
[2020-07-20 16:27:54,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a034cc5/011c36e026034e81812f8d181ed21518/FLAG9caf524ab
[2020-07-20 16:27:54,790 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 16:27:54,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c
[2020-07-20 16:27:54,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a034cc5/011c36e026034e81812f8d181ed21518/FLAG9caf524ab
[2020-07-20 16:27:55,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a034cc5/011c36e026034e81812f8d181ed21518
[2020-07-20 16:27:55,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 16:27:55,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 16:27:55,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 16:27:55,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 16:27:55,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 16:27:55,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:55" (1/1) ...
[2020-07-20 16:27:55,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5315a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:55, skipping insertion in model container
[2020-07-20 16:27:55,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:55" (1/1) ...
[2020-07-20 16:27:55,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 16:27:55,219 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 16:27:55,438 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 16:27:55,444 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 16:27:55,464 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 16:27:55,481 INFO L208 MainTranslator]: Completed translation
[2020-07-20 16:27:55,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:55 WrapperNode
[2020-07-20 16:27:55,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 16:27:55,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 16:27:55,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 16:27:55,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 16:27:55,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:55" (1/1) ...
[2020-07-20 16:27:55,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:55" (1/1) ...
[2020-07-20 16:27:55,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:55" (1/1) ...
[2020-07-20 16:27:55,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:55" (1/1) ...
[2020-07-20 16:27:55,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:55" (1/1) ...
[2020-07-20 16:27:55,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:55" (1/1) ...
[2020-07-20 16:27:55,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:55" (1/1) ...
[2020-07-20 16:27:55,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 16:27:55,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 16:27:55,601 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 16:27:55,601 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 16:27:55,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:55" (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
[2020-07-20 16:27:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 16:27:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 16:27:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-07-20 16:27:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-20 16:27:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 16:27:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float
[2020-07-20 16:27:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 16:27:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-07-20 16:27:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-07-20 16:27:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-20 16:27:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 16:27:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 16:27:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 16:27:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 16:27:55,857 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 16:27:55,857 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-07-20 16:27:55,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:55 BoogieIcfgContainer
[2020-07-20 16:27:55,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 16:27:55,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 16:27:55,862 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 16:27:55,865 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 16:27:55,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:27:55" (1/3) ...
[2020-07-20 16:27:55,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b11a1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:55, skipping insertion in model container
[2020-07-20 16:27:55,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:55" (2/3) ...
[2020-07-20 16:27:55,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b11a1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:55, skipping insertion in model container
[2020-07-20 16:27:55,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:55" (3/3) ...
[2020-07-20 16:27:55,868 INFO L109 eAbstractionObserver]: Analyzing ICFG loop1-2.c
[2020-07-20 16:27:55,879 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 16:27:55,886 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 16:27:55,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 16:27:55,964 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 16:27:55,964 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 16:27:55,964 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 16:27:55,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 16:27:55,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 16:27:55,965 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 16:27:55,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 16:27:55,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 16:27:55,991 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states.
[2020-07-20 16:27:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-07-20 16:27:55,997 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 16:27:55,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 16:27:55,998 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 16:27:56,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 16:27:56,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1796465968, now seen corresponding path program 1 times
[2020-07-20 16:27:56,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 16:27:56,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379066446]
[2020-07-20 16:27:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:56,077 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 16:27:56,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 16:27:56,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-20 16:27:56,088 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 16:27:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 16:27:56,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 16:27:56,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379066446]
[2020-07-20 16:27:56,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 16:27:56,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-20 16:27:56,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041146231]
[2020-07-20 16:27:56,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-20 16:27:56,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 16:27:56,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-20 16:27:56,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 16:27:56,130 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states.
[2020-07-20 16:27:56,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 16:27:56,147 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions.
[2020-07-20 16:27:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-07-20 16:27:56,148 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10
[2020-07-20 16:27:56,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 16:27:56,154 INFO L225 Difference]: With dead ends: 31
[2020-07-20 16:27:56,154 INFO L226 Difference]: Without dead ends: 12
[2020-07-20 16:27:56,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 16:27:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2020-07-20 16:27:56,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2020-07-20 16:27:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2020-07-20 16:27:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2020-07-20 16:27:56,191 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10
[2020-07-20 16:27:56,191 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 16:27:56,191 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2020-07-20 16:27:56,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-20 16:27:56,192 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2020-07-20 16:27:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-07-20 16:27:56,192 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 16:27:56,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 16:27:56,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:56,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 16:27:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 16:27:56,407 INFO L82 PathProgramCache]: Analyzing trace with hash -108592084, now seen corresponding path program 1 times
[2020-07-20 16:27:56,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 16:27:56,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134814131]
[2020-07-20 16:27:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:56,445 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 16:27:56,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-20 16:27:56,446 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 16:27:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 16:27:56,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 16:27:56,470 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 16:27:56,470 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 16:27:56,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 16:27:56,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:27:56 BoogieIcfgContainer
[2020-07-20 16:27:56,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 16:27:56,706 INFO L168 Benchmark]: Toolchain (without parser) took 1527.02 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 139.4 MB in the end (delta: -37.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB.
[2020-07-20 16:27:56,708 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-07-20 16:27:56,709 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.27 ms. Allocated memory is still 137.4 MB. Free memory was 101.7 MB in the beginning and 92.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
[2020-07-20 16:27:56,711 INFO L168 Benchmark]: Boogie Preprocessor took 114.58 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 179.3 MB in the end (delta: -87.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB.
[2020-07-20 16:27:56,712 INFO L168 Benchmark]: RCFGBuilder took 260.04 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 166.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB.
[2020-07-20 16:27:56,713 INFO L168 Benchmark]: TraceAbstraction took 838.49 ms. Allocated memory is still 201.3 MB. Free memory was 166.1 MB in the beginning and 139.4 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB.
[2020-07-20 16:27:56,721 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 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 306.27 ms. Allocated memory is still 137.4 MB. Free memory was 101.7 MB in the beginning and 92.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 114.58 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 179.3 MB in the end (delta: -87.3 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 260.04 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 166.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 838.49 ms. Allocated memory is still 201.3 MB. Free memory was 166.1 MB in the beginning and 139.4 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 35, overapproximation of someBinaryArithmeticFLOAToperation at line 27.
Possible FailurePath:
[L18] float x = __VERIFIER_nondet_float() ;
[L19] float exp = 1.0 ;
[L20] float term = 1.0 ;
[L21] unsigned int count = 1 ;
[L22] float result = 2*(1/(1-x)) ;
[L23] int temp ;
VAL [count=1, exp=1, term=1, x=0]
[L25] COND TRUE 1
[L27] term = term * (x/count)
[L28] exp = exp + term
[L29] count++
[L31] temp = __VERIFIER_nondet_int()
[L32] COND TRUE temp ==0
VAL [count=2, temp=0, x=0]
[L35] CALL __VERIFIER_assert( result >= exp )
VAL [\old(cond)=0]
[L12] COND TRUE !(cond)
VAL [\old(cond)=0, cond=0]
[L12] __VERIFIER_error()
VAL [\old(cond)=0, cond=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...