/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/ldv-regression/test21-2.c
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This is Ultimate 0.1.25-d623d84
[2020-07-20 17:14:56,912 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 17:14:56,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 17:14:56,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 17:14:56,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 17:14:56,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 17:14:56,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 17:14:56,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 17:14:56,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 17:14:56,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 17:14:56,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 17:14:56,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 17:14:56,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 17:14:56,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 17:14:56,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 17:14:56,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 17:14:56,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 17:14:56,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 17:14:56,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 17:14:56,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 17:14:56,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 17:14:56,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 17:14:56,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 17:14:56,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 17:14:56,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 17:14:56,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 17:14:56,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 17:14:56,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 17:14:56,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 17:14:56,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 17:14:56,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 17:14:56,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 17:14:56,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 17:14:56,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 17:14:56,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 17:14:56,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 17:14:56,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 17:14:56,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 17:14:56,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 17:14:56,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 17:14:56,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 17:14:56,979 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 17:14:57,005 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 17:14:57,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 17:14:57,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 17:14:57,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 17:14:57,007 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 17:14:57,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 17:14:57,008 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 17:14:57,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 17:14:57,008 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 17:14:57,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 17:14:57,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 17:14:57,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 17:14:57,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 17:14:57,009 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 17:14:57,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 17:14:57,009 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 17:14:57,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 17:14:57,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 17:14:57,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 17:14:57,010 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 17:14:57,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 17:14:57,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 17:14:57,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 17:14:57,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 17:14:57,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 17:14:57,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 17:14:57,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:14:57,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 17:14:57,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 17:14:57,012 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 17:14:57,283 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 17:14:57,296 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 17:14:57,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 17:14:57,301 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 17:14:57,301 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 17:14:57,302 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-2.c
[2020-07-20 17:14:57,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27220a129/3e5f1fab2e1e42d5aec0f1f1a99ee5d8/FLAGd83ac2a4f
[2020-07-20 17:14:57,771 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 17:14:57,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-2.c
[2020-07-20 17:14:57,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27220a129/3e5f1fab2e1e42d5aec0f1f1a99ee5d8/FLAGd83ac2a4f
[2020-07-20 17:14:58,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27220a129/3e5f1fab2e1e42d5aec0f1f1a99ee5d8
[2020-07-20 17:14:58,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 17:14:58,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 17:14:58,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 17:14:58,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 17:14:58,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 17:14:58,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b72a91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58, skipping insertion in model container
[2020-07-20 17:14:58,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 17:14:58,202 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 17:14:58,369 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 17:14:58,381 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 17:14:58,400 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 17:14:58,419 INFO L208 MainTranslator]: Completed translation
[2020-07-20 17:14:58,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58 WrapperNode
[2020-07-20 17:14:58,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 17:14:58,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 17:14:58,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 17:14:58,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 17:14:58,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 17:14:58,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 17:14:58,568 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 17:14:58,568 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 17:14:58,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (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 17:14:58,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 17:14:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 17:14:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure init
[2020-07-20 17:14:58,647 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy
[2020-07-20 17:14:58,648 INFO L138 BoogieDeclarations]: Found implementation of procedure check
[2020-07-20 17:14:58,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 17:14:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 17:14:58,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 17:14:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-07-20 17:14:58,650 INFO L130 BoogieDeclarations]: Found specification of procedure init
[2020-07-20 17:14:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-20 17:14:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy
[2020-07-20 17:14:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure check
[2020-07-20 17:14:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-20 17:14:58,651 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 17:14:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 17:14:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-20 17:14:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-07-20 17:14:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 17:14:58,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 17:14:59,110 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 17:14:59,111 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-20 17:14:59,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:14:59 BoogieIcfgContainer
[2020-07-20 17:14:59,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 17:14:59,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 17:14:59,117 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 17:14:59,120 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 17:14:59,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:14:58" (1/3) ...
[2020-07-20 17:14:59,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe5d5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:14:59, skipping insertion in model container
[2020-07-20 17:14:59,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (2/3) ...
[2020-07-20 17:14:59,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe5d5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:14:59, skipping insertion in model container
[2020-07-20 17:14:59,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:14:59" (3/3) ...
[2020-07-20 17:14:59,124 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-2.c
[2020-07-20 17:14:59,134 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 17:14:59,141 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 17:14:59,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 17:14:59,178 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 17:14:59,179 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 17:14:59,179 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 17:14:59,179 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 17:14:59,179 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 17:14:59,180 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 17:14:59,180 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 17:14:59,180 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 17:14:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states.
[2020-07-20 17:14:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-07-20 17:14:59,207 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:14:59,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:14:59,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:14:59,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:14:59,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1351082661, now seen corresponding path program 1 times
[2020-07-20 17:14:59,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:14:59,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810948916]
[2020-07-20 17:14:59,225 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 17:14:59,372 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 17:14:59,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-20 17:14:59,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 17:14:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 17:14:59,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 17:14:59,441 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 17:14:59,441 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 17:14:59,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:14:59,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:14:59 BoogieIcfgContainer
[2020-07-20 17:14:59,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 17:14:59,698 INFO L168 Benchmark]: Toolchain (without parser) took 1533.48 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 137.2 MB in the end (delta: -34.3 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB.
[2020-07-20 17:14:59,699 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
[2020-07-20 17:14:59,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.29 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 92.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
[2020-07-20 17:14:59,701 INFO L168 Benchmark]: Boogie Preprocessor took 146.02 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.3 MB in the beginning and 181.5 MB in the end (delta: -89.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB.
[2020-07-20 17:14:59,702 INFO L168 Benchmark]: RCFGBuilder took 547.71 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 164.2 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB.
[2020-07-20 17:14:59,703 INFO L168 Benchmark]: TraceAbstraction took 579.07 ms. Allocated memory is still 203.4 MB. Free memory was 164.2 MB in the beginning and 137.2 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB.
[2020-07-20 17:14:59,708 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 254.29 ms. Allocated memory is still 139.5 MB. Free memory was 102.5 MB in the beginning and 92.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 146.02 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.3 MB in the beginning and 181.5 MB in the end (delta: -89.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 547.71 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 164.2 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 579.07 ms. Allocated memory is still 203.4 MB. Free memory was 164.2 MB in the beginning and 137.2 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 42]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L9] struct dummy d1, d2;
VAL [\old(d1)=11, \old(d1)=9, \old(d2)=7, \old(d2)=6, d1={3:0}, d2={2:0}]
[L32] CALL init()
VAL [d1={3:0}, d2={2:0}]
[L13] d1.a = __VERIFIER_nondet_int()
[L14] d1.b = __VERIFIER_nondet_int()
[L16] d2.a = __VERIFIER_nondet_int()
[L17] d2.b = __VERIFIER_nondet_int()
[L32] RET init()
VAL [d1={3:0}, d2={2:0}]
[L33] CALL, EXPR get_dummy()
VAL [d1={3:0}, d2={2:0}]
[L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2
VAL [__VERIFIER_nondet_bool()=256, __VERIFIER_nondet_bool() ? &d1 : &d2={2:0}, d1={3:0}, d2={2:0}]
[L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2);
[L33] RET, EXPR get_dummy()
VAL [d1={3:0}, d2={2:0}, get_dummy()={2:0}]
[L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy();
[L33] CALL, EXPR get_dummy()
VAL [d1={3:0}, d2={2:0}]
[L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2
VAL [__VERIFIER_nondet_bool()=256, __VERIFIER_nondet_bool() ? &d1 : &d2={2:0}, d1={3:0}, d2={2:0}]
[L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2);
[L33] RET, EXPR get_dummy()
VAL [d1={3:0}, d2={2:0}, get_dummy()={2:0}, pd1={2:0}]
[L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy();
[L34] COND TRUE pd1 != 0 && pd1 == pd2
VAL [d1={3:0}, d2={2:0}, pd1={2:0}, pd2={2:0}]
[L35] CALL, EXPR check(pd1, pd2)
VAL [d1={3:0}, d2={2:0}, s1={2:0}, s2={2:0}]
[L27] EXPR s1->a
[L27] EXPR s2->b
[L27] return s1->a == s2->b;
[L35] RET, EXPR check(pd1, pd2)
VAL [check(pd1, pd2)=0, d1={3:0}, d2={2:0}, pd1={2:0}, pd2={2:0}]
[L35] COND TRUE !check(pd1, pd2)
[L42] __VERIFIER_error()
VAL [d1={3:0}, d2={2:0}, pd1={2:0}, pd2={2:0}]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 incorrect!
Received shutdown request...