/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 BIGGEST_EQUIVALENCE_CLASS --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/ldv-regression/test_union_cast.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-d623d84
[2020-07-21 01:14:06,041 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-21 01:14:06,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 01:14:06,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 01:14:06,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 01:14:06,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 01:14:06,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 01:14:06,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 01:14:06,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 01:14:06,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 01:14:06,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 01:14:06,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 01:14:06,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 01:14:06,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 01:14:06,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 01:14:06,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 01:14:06,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 01:14:06,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 01:14:06,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 01:14:06,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 01:14:06,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 01:14:06,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 01:14:06,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 01:14:06,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 01:14:06,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 01:14:06,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 01:14:06,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 01:14:06,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 01:14:06,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 01:14:06,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 01:14:06,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 01:14:06,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 01:14:06,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 01:14:06,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 01:14:06,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 01:14:06,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 01:14:06,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-21 01:14:06,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-21 01:14:06,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 01:14:06,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 01:14:06,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 01:14:06,090 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
[2020-07-21 01:14:06,104 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-21 01:14:06,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 01:14:06,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 01:14:06,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-21 01:14:06,109 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-21 01:14:06,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 01:14:06,109 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-21 01:14:06,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-21 01:14:06,110 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-21 01:14:06,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-21 01:14:06,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 01:14:06,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 01:14:06,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 01:14:06,112 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-21 01:14:06,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-21 01:14:06,113 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-21 01:14:06,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-21 01:14:06,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 01:14:06,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-21 01:14:06,114 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-21 01:14:06,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-21 01:14:06,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 01:14:06,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 01:14:06,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 01:14:06,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 01:14:06,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-21 01:14:06,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 01:14:06,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 01:14:06,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-21 01:14:06,116 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 -> BIGGEST_EQUIVALENCE_CLASS
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
[2020-07-21 01:14:06,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 01:14:06,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 01:14:06,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 01:14:06,412 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-21 01:14:06,413 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-21 01:14:06,413 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_union_cast.i
[2020-07-21 01:14:06,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc960726/a1945beb10e840139181c4c6d189ba63/FLAGe586c31ae
[2020-07-21 01:14:06,951 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-21 01:14:06,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_union_cast.i
[2020-07-21 01:14:06,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc960726/a1945beb10e840139181c4c6d189ba63/FLAGe586c31ae
[2020-07-21 01:14:07,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc960726/a1945beb10e840139181c4c6d189ba63
[2020-07-21 01:14:07,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 01:14:07,330 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 01:14:07,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 01:14:07,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 01:14:07,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 01:14:07,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:14:07" (1/1) ...
[2020-07-21 01:14:07,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25060991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:07, skipping insertion in model container
[2020-07-21 01:14:07,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:14:07" (1/1) ...
[2020-07-21 01:14:07,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-21 01:14:07,368 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-21 01:14:07,541 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 01:14:07,555 INFO L203 MainTranslator]: Completed pre-run
[2020-07-21 01:14:07,573 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 01:14:07,590 INFO L208 MainTranslator]: Completed translation
[2020-07-21 01:14:07,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:07 WrapperNode
[2020-07-21 01:14:07,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 01:14:07,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 01:14:07,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 01:14:07,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 01:14:07,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:07" (1/1) ...
[2020-07-21 01:14:07,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:07" (1/1) ...
[2020-07-21 01:14:07,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:07" (1/1) ...
[2020-07-21 01:14:07,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:07" (1/1) ...
[2020-07-21 01:14:07,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:07" (1/1) ...
[2020-07-21 01:14:07,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:07" (1/1) ...
[2020-07-21 01:14:07,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:07" (1/1) ...
[2020-07-21 01:14:07,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 01:14:07,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 01:14:07,707 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 01:14:07,707 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-21 01:14:07,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:07" (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
[2020-07-21 01:14:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 01:14:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 01:14:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert
[2020-07-21 01:14:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 01:14:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 01:14:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert
[2020-07-21 01:14:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-21 01:14:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-21 01:14:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-07-21 01:14:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-21 01:14:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-21 01:14:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-21 01:14:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 01:14:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 01:14:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-07-21 01:14:08,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 01:14:08,001 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-21 01:14:08,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:14:08 BoogieIcfgContainer
[2020-07-21 01:14:08,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 01:14:08,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 01:14:08,013 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 01:14:08,021 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-21 01:14:08,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:14:07" (1/3) ...
[2020-07-21 01:14:08,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8ce3d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:14:08, skipping insertion in model container
[2020-07-21 01:14:08,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:07" (2/3) ...
[2020-07-21 01:14:08,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8ce3d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:14:08, skipping insertion in model container
[2020-07-21 01:14:08,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:14:08" (3/3) ...
[2020-07-21 01:14:08,028 INFO L109 eAbstractionObserver]: Analyzing ICFG test_union_cast.i
[2020-07-21 01:14:08,051 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 01:14:08,067 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 01:14:08,083 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 01:14:08,108 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-21 01:14:08,108 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-21 01:14:08,108 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 01:14:08,108 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 01:14:08,109 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 01:14:08,109 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-21 01:14:08,109 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 01:14:08,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 01:14:08,128 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states.
[2020-07-21 01:14:08,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2020-07-21 01:14:08,134 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 01:14:08,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 01:14:08,135 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 01:14:08,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 01:14:08,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1215743292, now seen corresponding path program 1 times
[2020-07-21 01:14:08,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 01:14:08,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435673230]
[2020-07-21 01:14:08,148 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
[2020-07-21 01:14:08,237 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-21 01:14:08,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 01:14:08,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-21 01:14:08,249 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 01:14:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 01:14:08,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 01:14:08,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435673230]
[2020-07-21 01:14:08,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 01:14:08,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 01:14:08,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191374928]
[2020-07-21 01:14:08,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 01:14:08,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 01:14:08,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 01:14:08,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 01:14:08,330 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states.
[2020-07-21 01:14:08,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 01:14:08,364 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions.
[2020-07-21 01:14:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-07-21 01:14:08,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9
[2020-07-21 01:14:08,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 01:14:08,372 INFO L225 Difference]: With dead ends: 22
[2020-07-21 01:14:08,373 INFO L226 Difference]: Without dead ends: 0
[2020-07-21 01:14:08,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 01:14:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-07-21 01:14:08,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-07-21 01:14:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-07-21 01:14:08,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-07-21 01:14:08,401 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9
[2020-07-21 01:14:08,401 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-21 01:14:08,401 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-07-21 01:14:08,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 01:14:08,402 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-07-21 01:14:08,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-21 01:14:08,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 01:14:08,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-07-21 01:14:08,669 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2020-07-21 01:14:08,670 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true
[2020-07-21 01:14:08,670 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-07-21 01:14:08,670 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed.
[2020-07-21 01:14:08,671 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed.
[2020-07-21 01:14:08,671 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed.
[2020-07-21 01:14:08,671 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true
[2020-07-21 01:14:08,671 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-07-21 01:14:08,671 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-07-21 01:14:08,672 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-07-21 01:14:08,672 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-07-21 01:14:08,672 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 19 32) the Hoare annotation is: true
[2020-07-21 01:14:08,672 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed.
[2020-07-21 01:14:08,672 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 19 32) no Hoare annotation was computed.
[2020-07-21 01:14:08,672 INFO L264 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: false
[2020-07-21 01:14:08,673 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed.
[2020-07-21 01:14:08,673 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 19 32) no Hoare annotation was computed.
[2020-07-21 01:14:08,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:14:08 BoogieIcfgContainer
[2020-07-21 01:14:08,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 01:14:08,681 INFO L168 Benchmark]: Toolchain (without parser) took 1351.39 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 139.9 MB in the end (delta: -37.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB.
[2020-07-21 01:14:08,682 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-21 01:14:08,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.50 ms. Allocated memory is still 137.9 MB. Free memory was 101.7 MB in the beginning and 91.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
[2020-07-21 01:14:08,684 INFO L168 Benchmark]: Boogie Preprocessor took 113.79 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 91.9 MB in the beginning and 181.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB.
[2020-07-21 01:14:08,685 INFO L168 Benchmark]: RCFGBuilder took 301.56 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 167.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB.
[2020-07-21 01:14:08,686 INFO L168 Benchmark]: TraceAbstraction took 665.61 ms. Allocated memory is still 202.4 MB. Free memory was 167.8 MB in the beginning and 139.9 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB.
[2020-07-21 01:14:08,691 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 261.50 ms. Allocated memory is still 137.9 MB. Free memory was 101.7 MB in the beginning and 91.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 113.79 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 91.9 MB in the beginning and 181.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 301.56 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 167.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 665.61 ms. Allocated memory is still 202.4 MB. Free memory was 167.8 MB in the beginning and 139.9 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 1 SDslu, 8 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 4 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 4 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 proved your program to be correct!
Received shutdown request...