/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/loops/sum03-2.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-d623d84
[2020-07-20 17:42:20,853 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 17:42:20,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 17:42:20,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 17:42:20,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 17:42:20,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 17:42:20,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 17:42:20,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 17:42:20,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 17:42:20,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 17:42:20,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 17:42:20,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 17:42:20,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 17:42:20,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 17:42:20,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 17:42:20,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 17:42:20,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 17:42:20,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 17:42:20,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 17:42:20,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 17:42:20,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 17:42:20,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 17:42:20,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 17:42:20,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 17:42:20,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 17:42:20,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 17:42:20,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 17:42:20,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 17:42:20,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 17:42:20,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 17:42:20,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 17:42:20,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 17:42:20,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 17:42:20,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 17:42:20,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 17:42:20,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 17:42:20,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 17:42:20,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 17:42:20,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 17:42:20,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 17:42:20,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 17:42:20,946 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 17:42:20,961 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 17:42:20,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 17:42:20,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 17:42:20,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 17:42:20,963 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 17:42:20,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 17:42:20,964 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 17:42:20,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 17:42:20,964 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 17:42:20,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 17:42:20,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 17:42:20,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 17:42:20,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 17:42:20,965 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 17:42:20,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 17:42:20,965 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 17:42:20,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 17:42:20,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 17:42:20,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 17:42:20,966 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 17:42:20,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 17:42:20,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 17:42:20,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 17:42:20,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 17:42:20,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 17:42:20,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 17:42:20,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:42:20,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 17:42:20,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 17:42:20,969 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 17:42:21,265 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 17:42:21,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 17:42:21,291 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 17:42:21,292 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 17:42:21,293 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 17:42:21,293 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-2.i
[2020-07-20 17:42:21,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aed10dc/433e0b84d71140c8a5959f6f3380525f/FLAGc708fd9f0
[2020-07-20 17:42:21,903 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 17:42:21,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-2.i
[2020-07-20 17:42:21,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aed10dc/433e0b84d71140c8a5959f6f3380525f/FLAGc708fd9f0
[2020-07-20 17:42:22,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08aed10dc/433e0b84d71140c8a5959f6f3380525f
[2020-07-20 17:42:22,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 17:42:22,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 17:42:22,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 17:42:22,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 17:42:22,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 17:42:22,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:42:22" (1/1) ...
[2020-07-20 17:42:22,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fdde1fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:22, skipping insertion in model container
[2020-07-20 17:42:22,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:42:22" (1/1) ...
[2020-07-20 17:42:22,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 17:42:22,326 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 17:42:22,496 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 17:42:22,500 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 17:42:22,517 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 17:42:22,531 INFO L208 MainTranslator]: Completed translation
[2020-07-20 17:42:22,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:22 WrapperNode
[2020-07-20 17:42:22,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 17:42:22,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 17:42:22,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 17:42:22,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 17:42:22,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:22" (1/1) ...
[2020-07-20 17:42:22,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:22" (1/1) ...
[2020-07-20 17:42:22,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:22" (1/1) ...
[2020-07-20 17:42:22,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:22" (1/1) ...
[2020-07-20 17:42:22,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:22" (1/1) ...
[2020-07-20 17:42:22,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:22" (1/1) ...
[2020-07-20 17:42:22,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:22" (1/1) ...
[2020-07-20 17:42:22,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 17:42:22,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 17:42:22,648 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 17:42:22,648 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 17:42:22,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:22" (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 17:42:22,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 17:42:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 17:42:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-20 17:42:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 17:42:22,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 17:42:22,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-20 17:42:22,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2020-07-20 17:42:22,722 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 17:42:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 17:42:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 17:42:22,902 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 17:42:22,903 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-07-20 17:42:22,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:42:22 BoogieIcfgContainer
[2020-07-20 17:42:22,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 17:42:22,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 17:42:22,908 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 17:42:22,911 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 17:42:22,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:42:22" (1/3) ...
[2020-07-20 17:42:22,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25703c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:42:22, skipping insertion in model container
[2020-07-20 17:42:22,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:22" (2/3) ...
[2020-07-20 17:42:22,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25703c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:42:22, skipping insertion in model container
[2020-07-20 17:42:22,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:42:22" (3/3) ...
[2020-07-20 17:42:22,915 INFO L109 eAbstractionObserver]: Analyzing ICFG sum03-2.i
[2020-07-20 17:42:22,927 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 17:42:22,935 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 17:42:22,950 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 17:42:22,977 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 17:42:22,977 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 17:42:22,977 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 17:42:22,977 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 17:42:22,978 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 17:42:22,978 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 17:42:22,978 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 17:42:22,978 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 17:42:22,998 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states.
[2020-07-20 17:42:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-07-20 17:42:23,004 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:42:23,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:42:23,005 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:42:23,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:42:23,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1847991872, now seen corresponding path program 1 times
[2020-07-20 17:42:23,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:42:23,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577601668]
[2020-07-20 17:42:23,019 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 17:42:23,149 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 17:42:23,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 17:42:23,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 11 conjunts are in the unsatisfiable core
[2020-07-20 17:42:23,171 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 17:42:23,289 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 17:42:23,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 17:42:23,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577601668]
[2020-07-20 17:42:23,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 17:42:23,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-07-20 17:42:23,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775398631]
[2020-07-20 17:42:23,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-07-20 17:42:23,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 17:42:23,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-07-20 17:42:23,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-07-20 17:42:23,319 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states.
[2020-07-20 17:42:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 17:42:23,427 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions.
[2020-07-20 17:42:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-07-20 17:42:23,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10
[2020-07-20 17:42:23,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 17:42:23,438 INFO L225 Difference]: With dead ends: 32
[2020-07-20 17:42:23,438 INFO L226 Difference]: Without dead ends: 20
[2020-07-20 17:42:23,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-07-20 17:42:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2020-07-20 17:42:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19.
[2020-07-20 17:42:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2020-07-20 17:42:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions.
[2020-07-20 17:42:23,481 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10
[2020-07-20 17:42:23,481 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 17:42:23,482 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions.
[2020-07-20 17:42:23,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-07-20 17:42:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions.
[2020-07-20 17:42:23,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-07-20 17:42:23,483 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:42:23,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:42:23,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:42:23,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:42:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:42:23,687 INFO L82 PathProgramCache]: Analyzing trace with hash 982254813, now seen corresponding path program 1 times
[2020-07-20 17:42:23,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:42:23,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732638234]
[2020-07-20 17:42:23,689 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 17:42:23,729 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 17:42:23,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 17:42:23,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjunts are in the unsatisfiable core
[2020-07-20 17:42:23,733 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 17:42:23,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 17:42:23,809 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 17:42:23,847 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 17:42:28,291 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-20 17:42:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 17:42:30,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732638234]
[2020-07-20 17:42:30,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 17:42:30,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10
[2020-07-20 17:42:30,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939744151]
[2020-07-20 17:42:30,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-07-20 17:42:30,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 17:42:30,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-07-20 17:42:30,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=61, Unknown=3, NotChecked=0, Total=90
[2020-07-20 17:42:30,447 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states.
[2020-07-20 17:42:39,679 WARN L193 SmtUtils]: Spent 8.99 s on a formula simplification. DAG size of input: 38 DAG size of output: 11
[2020-07-20 17:42:39,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 17:42:39,741 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions.
[2020-07-20 17:42:39,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-07-20 17:42:39,742 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16
[2020-07-20 17:42:39,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 17:42:39,743 INFO L225 Difference]: With dead ends: 22
[2020-07-20 17:42:39,743 INFO L226 Difference]: Without dead ends: 0
[2020-07-20 17:42:39,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=38, Invalid=91, Unknown=3, NotChecked=0, Total=132
[2020-07-20 17:42:39,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-07-20 17:42:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-07-20 17:42:39,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-07-20 17:42:39,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-07-20 17:42:39,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16
[2020-07-20 17:42:39,746 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 17:42:39,747 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-07-20 17:42:39,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-07-20 17:42:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-07-20 17:42:39,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-20 17:42:39,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:42:39,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-07-20 17:42:40,074 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-07-20 17:42:40,074 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-07-20 17:42:40,074 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-07-20 17:42:40,075 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-07-20 17:42:40,075 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-07-20 17:42:40,075 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-07-20 17:42:40,075 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 18) the Hoare annotation is: true
[2020-07-20 17:42:40,076 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 18) no Hoare annotation was computed.
[2020-07-20 17:42:40,076 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= (mod (+ main_~sn~0 2) 4294967296) (mod (+ (* main_~x~0 2) 2) 4294967296))
[2020-07-20 17:42:40,076 INFO L264 CegarLoopResult]: At program point L16-1(lines 13 17) the Hoare annotation is: (= (mod (+ main_~sn~0 2) 4294967296) (mod (+ (* main_~x~0 2) 2) 4294967296))
[2020-07-20 17:42:40,076 INFO L268 CegarLoopResult]: For program point L13-2(lines 9 18) no Hoare annotation was computed.
[2020-07-20 17:42:40,077 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed.
[2020-07-20 17:42:40,077 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true
[2020-07-20 17:42:40,077 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed.
[2020-07-20 17:42:40,077 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed.
[2020-07-20 17:42:40,077 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed.
[2020-07-20 17:42:40,078 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed.
[2020-07-20 17:42:40,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:42:40 BoogieIcfgContainer
[2020-07-20 17:42:40,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 17:42:40,113 INFO L168 Benchmark]: Toolchain (without parser) took 17827.74 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 104.0 MB in the beginning and 94.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB.
[2020-07-20 17:42:40,114 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
[2020-07-20 17:42:40,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.08 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 94.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
[2020-07-20 17:42:40,119 INFO L168 Benchmark]: Boogie Preprocessor took 114.54 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 94.3 MB in the beginning and 183.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB.
[2020-07-20 17:42:40,120 INFO L168 Benchmark]: RCFGBuilder took 258.91 ms. Allocated memory is still 202.9 MB. Free memory was 183.0 MB in the beginning and 170.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB.
[2020-07-20 17:42:40,122 INFO L168 Benchmark]: TraceAbstraction took 17200.12 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 94.1 MB in the end (delta: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 7.1 GB.
[2020-07-20 17:42:40,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 247.08 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 94.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 114.54 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 94.3 MB in the beginning and 183.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 258.91 ms. Allocated memory is still 202.9 MB. Free memory was 183.0 MB in the beginning and 170.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 17200.12 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 94.1 MB in the end (delta: 76.1 MB). Peak memory consumption was 76.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 4]: 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
- InvariantResult [Line: 13]: Loop Invariant
Derived loop invariant: (sn + 2) % 4294967296 == (x * 2 + 2) % 4294967296
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.9s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 10 SDslu, 70 SDs, 0 SdLazy, 67 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 31 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 37 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 26 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 2265 SizeOfPredicates, 4 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 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...