/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test21-1.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-d623d84
[2020-07-20 11:30:18,384 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-20 11:30:18,387 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 11:30:18,409 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 11:30:18,409 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 11:30:18,411 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 11:30:18,413 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 11:30:18,424 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 11:30:18,428 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 11:30:18,433 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 11:30:18,434 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 11:30:18,436 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 11:30:18,436 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 11:30:18,438 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 11:30:18,441 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 11:30:18,442 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 11:30:18,444 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 11:30:18,445 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 11:30:18,447 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 11:30:18,452 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 11:30:18,459 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 11:30:18,464 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 11:30:18,465 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 11:30:18,466 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 11:30:18,469 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 11:30:18,469 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 11:30:18,469 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 11:30:18,472 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 11:30:18,473 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 11:30:18,475 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 11:30:18,475 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 11:30:18,477 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 11:30:18,478 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 11:30:18,478 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 11:30:18,480 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 11:30:18,480 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 11:30:18,481 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 11:30:18,481 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 11:30:18,481 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 11:30:18,482 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 11:30:18,484 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 11:30:18,485 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 11:30:18,520 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-20 11:30:18,520 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 11:30:18,522 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 11:30:18,522 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-07-20 11:30:18,522 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-07-20 11:30:18,522 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 11:30:18,523 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-20 11:30:18,523 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-20 11:30:18,523 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-20 11:30:18,525 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-20 11:30:18,525 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 11:30:18,525 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 11:30:18,526 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 11:30:18,526 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-20 11:30:18,526 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-20 11:30:18,526 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-20 11:30:18,526 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-20 11:30:18,527 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 11:30:18,527 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-07-20 11:30:18,527 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-20 11:30:18,527 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-20 11:30:18,527 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 11:30:18,528 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 11:30:18,528 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 11:30:18,528 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 11:30:18,530 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-07-20 11:30:18,531 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:30:18,531 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 11:30:18,531 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-07-20 11:30:18,531 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 -> NOT_INCREMENTALLY
[2020-07-20 11:30:18,816 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 11:30:18,829 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 11:30:18,834 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 11:30:18,835 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-20 11:30:18,836 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-20 11:30:18,837 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-1.c
[2020-07-20 11:30:18,916 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ed16925/7de47bf2fff64b67b14195890e668eed/FLAGfc839bafd
[2020-07-20 11:30:19,422 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-20 11:30:19,423 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-1.c
[2020-07-20 11:30:19,431 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ed16925/7de47bf2fff64b67b14195890e668eed/FLAGfc839bafd
[2020-07-20 11:30:19,783 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ed16925/7de47bf2fff64b67b14195890e668eed
[2020-07-20 11:30:19,795 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 11:30:19,799 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 11:30:19,803 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 11:30:19,803 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 11:30:19,807 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 11:30:19,808 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:30:19" (1/1) ...
[2020-07-20 11:30:19,811 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a01cd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:19, skipping insertion in model container
[2020-07-20 11:30:19,812 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:30:19" (1/1) ...
[2020-07-20 11:30:19,821 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-20 11:30:19,842 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-20 11:30:20,027 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:30:20,040 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-20 11:30:20,058 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:30:20,075 INFO  L208         MainTranslator]: Completed translation
[2020-07-20 11:30:20,076 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20 WrapperNode
[2020-07-20 11:30:20,076 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 11:30:20,076 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 11:30:20,077 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 11:30:20,077 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 11:30:20,174 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ...
[2020-07-20 11:30:20,174 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ...
[2020-07-20 11:30:20,182 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ...
[2020-07-20 11:30:20,182 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ...
[2020-07-20 11:30:20,191 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ...
[2020-07-20 11:30:20,196 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ...
[2020-07-20 11:30:20,197 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ...
[2020-07-20 11:30:20,200 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 11:30:20,206 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 11:30:20,207 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 11:30:20,207 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-20 11:30:20,208 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (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 11:30:20,273 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 11:30:20,274 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 11:30:20,274 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2020-07-20 11:30:20,274 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_dummy
[2020-07-20 11:30:20,274 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2020-07-20 11:30:20,274 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 11:30:20,274 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 11:30:20,275 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 11:30:20,276 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-07-20 11:30:20,276 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-07-20 11:30:20,276 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-07-20 11:30:20,276 INFO  L130     BoogieDeclarations]: Found specification of procedure get_dummy
[2020-07-20 11:30:20,277 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-07-20 11:30:20,277 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-07-20 11:30:20,277 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-20 11:30:20,277 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 11:30:20,278 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-20 11:30:20,278 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-07-20 11:30:20,278 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 11:30:20,278 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 11:30:20,550 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 11:30:20,550 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-20 11:30:20,555 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:30:20 BoogieIcfgContainer
[2020-07-20 11:30:20,556 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 11:30:20,557 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 11:30:20,558 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 11:30:20,561 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-20 11:30:20,561 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:30:19" (1/3) ...
[2020-07-20 11:30:20,562 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fee66c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:30:20, skipping insertion in model container
[2020-07-20 11:30:20,562 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (2/3) ...
[2020-07-20 11:30:20,563 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fee66c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:30:20, skipping insertion in model container
[2020-07-20 11:30:20,563 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:30:20" (3/3) ...
[2020-07-20 11:30:20,565 INFO  L109   eAbstractionObserver]: Analyzing ICFG test21-1.c
[2020-07-20 11:30:20,581 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 11:30:20,591 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 11:30:20,607 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 11:30:20,634 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-20 11:30:20,635 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-20 11:30:20,635 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 11:30:20,635 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 11:30:20,635 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 11:30:20,636 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-20 11:30:20,636 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 11:30:20,636 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 11:30:20,659 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states.
[2020-07-20 11:30:20,666 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-07-20 11:30:20,667 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 11:30:20,668 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 11:30:20,669 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:30:20,673 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:30:20,674 INFO  L82        PathProgramCache]: Analyzing trace with hash -1351082661, now seen corresponding path program 1 times
[2020-07-20 11:30:20,682 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:30:20,683 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595666704]
[2020-07-20 11:30:20,683 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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 11:30:20,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:30:20,826 INFO  L263         TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 53 conjunts are in the unsatisfiable core
[2020-07-20 11:30:20,836 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:30:21,073 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-07-20 11:30:21,074 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 11:30:21,075 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595666704]
[2020-07-20 11:30:21,076 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:30:21,076 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-07-20 11:30:21,078 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285272760]
[2020-07-20 11:30:21,084 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-07-20 11:30:21,084 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:30:21,100 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-07-20 11:30:21,102 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2020-07-20 11:30:21,104 INFO  L87              Difference]: Start difference. First operand 31 states. Second operand 11 states.
[2020-07-20 11:30:21,512 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:30:21,513 INFO  L93              Difference]: Finished difference Result 55 states and 64 transitions.
[2020-07-20 11:30:21,513 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-07-20 11:30:21,515 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 29
[2020-07-20 11:30:21,516 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:30:21,530 INFO  L225             Difference]: With dead ends: 55
[2020-07-20 11:30:21,530 INFO  L226             Difference]: Without dead ends: 29
[2020-07-20 11:30:21,539 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210
[2020-07-20 11:30:21,555 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2020-07-20 11:30:21,581 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2020-07-20 11:30:21,582 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2020-07-20 11:30:21,584 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions.
[2020-07-20 11:30:21,586 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 29
[2020-07-20 11:30:21,586 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:30:21,586 INFO  L479      AbstractCegarLoop]: Abstraction has 29 states and 30 transitions.
[2020-07-20 11:30:21,586 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-07-20 11:30:21,587 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions.
[2020-07-20 11:30:21,589 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-07-20 11:30:21,589 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 11:30:21,589 INFO  L422         BasicCegarLoop]: trace histogram [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, 1, 1]
[2020-07-20 11:30:21,803 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:30:21,804 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:30:21,804 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:30:21,805 INFO  L82        PathProgramCache]: Analyzing trace with hash 337861081, now seen corresponding path program 1 times
[2020-07-20 11:30:21,805 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:30:21,806 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634005131]
[2020-07-20 11:30:21,806 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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 11:30:21,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:30:21,882 INFO  L263         TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-07-20 11:30:21,889 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:30:21,940 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30
[2020-07-20 11:30:21,945 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 11:30:21,958 INFO  L624         ElimStorePlain]: treesize reduction 13, result has 23.5 percent of original size
[2020-07-20 11:30:21,958 INFO  L544         ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 11:30:21,959 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4
[2020-07-20 11:30:22,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:30:22,046 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 11:30:22,139 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-07-20 11:30:22,139 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634005131]
[2020-07-20 11:30:22,140 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 11:30:22,140 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13
[2020-07-20 11:30:22,140 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587452338]
[2020-07-20 11:30:22,142 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-07-20 11:30:22,142 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:30:22,143 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-07-20 11:30:22,143 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156
[2020-07-20 11:30:22,143 INFO  L87              Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 13 states.
[2020-07-20 11:30:22,353 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:30:22,354 INFO  L93              Difference]: Finished difference Result 39 states and 39 transitions.
[2020-07-20 11:30:22,354 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-07-20 11:30:22,354 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 29
[2020-07-20 11:30:22,355 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:30:22,356 INFO  L225             Difference]: With dead ends: 39
[2020-07-20 11:30:22,356 INFO  L226             Difference]: Without dead ends: 26
[2020-07-20 11:30:22,357 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342
[2020-07-20 11:30:22,358 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2020-07-20 11:30:22,363 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2020-07-20 11:30:22,363 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2020-07-20 11:30:22,364 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions.
[2020-07-20 11:30:22,365 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 29
[2020-07-20 11:30:22,365 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:30:22,365 INFO  L479      AbstractCegarLoop]: Abstraction has 26 states and 26 transitions.
[2020-07-20 11:30:22,365 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-07-20 11:30:22,366 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions.
[2020-07-20 11:30:22,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-07-20 11:30:22,367 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 11:30:22,367 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 11:30:22,580 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:30:22,581 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:30:22,582 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:30:22,582 INFO  L82        PathProgramCache]: Analyzing trace with hash 924667095, now seen corresponding path program 1 times
[2020-07-20 11:30:22,582 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:30:22,583 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353630927]
[2020-07-20 11:30:22,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:30:22,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:30:22,651 INFO  L263         TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 53 conjunts are in the unsatisfiable core
[2020-07-20 11:30:22,654 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:30:22,789 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-07-20 11:30:22,790 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 11:30:22,790 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353630927]
[2020-07-20 11:30:22,790 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:30:22,790 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-07-20 11:30:22,791 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513404842]
[2020-07-20 11:30:22,791 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-07-20 11:30:22,792 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:30:22,792 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-07-20 11:30:22,793 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2020-07-20 11:30:22,793 INFO  L87              Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 11 states.
[2020-07-20 11:30:23,019 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:30:23,019 INFO  L93              Difference]: Finished difference Result 26 states and 26 transitions.
[2020-07-20 11:30:23,019 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-07-20 11:30:23,020 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 29
[2020-07-20 11:30:23,020 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:30:23,020 INFO  L225             Difference]: With dead ends: 26
[2020-07-20 11:30:23,021 INFO  L226             Difference]: Without dead ends: 0
[2020-07-20 11:30:23,021 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210
[2020-07-20 11:30:23,022 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-07-20 11:30:23,022 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-07-20 11:30:23,022 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-07-20 11:30:23,022 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-07-20 11:30:23,023 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29
[2020-07-20 11:30:23,023 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:30:23,023 INFO  L479      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-07-20 11:30:23,023 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-07-20 11:30:23,023 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-07-20 11:30:23,023 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-20 11:30:23,230 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:30:23,234 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-07-20 11:30:23,513 INFO  L268        CegarLoopResult]: For program point  initEXIT(lines 11 18)  no Hoare annotation was computed.
[2020-07-20 11:30:23,513 INFO  L271        CegarLoopResult]: At program point  initENTRY(lines 11 18)  the Hoare annotation is:  true
[2020-07-20 11:30:23,513 INFO  L268        CegarLoopResult]: For program point  initFINAL(lines 11 18)  no Hoare annotation was computed.
[2020-07-20 11:30:23,513 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.initFINAL(line -1)  no Hoare annotation was computed.
[2020-07-20 11:30:23,514 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.initENTRY(line -1)  the Hoare annotation is:  true
[2020-07-20 11:30:23,514 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.initEXIT(line -1)  no Hoare annotation was computed.
[2020-07-20 11:30:23,514 INFO  L268        CegarLoopResult]: For program point  get_dummyFINAL(lines 20 23)  no Hoare annotation was computed.
[2020-07-20 11:30:23,514 INFO  L271        CegarLoopResult]: At program point  get_dummyENTRY(lines 20 23)  the Hoare annotation is:  true
[2020-07-20 11:30:23,514 INFO  L268        CegarLoopResult]: For program point  L22-1(line 22)  no Hoare annotation was computed.
[2020-07-20 11:30:23,514 INFO  L268        CegarLoopResult]: For program point  get_dummyEXIT(lines 20 23)  no Hoare annotation was computed.
[2020-07-20 11:30:23,514 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startEXIT(line -1)  no Hoare annotation was computed.
[2020-07-20 11:30:23,515 INFO  L264        CegarLoopResult]: At program point  L-1(line -1)  the Hoare annotation is:  (and (= 0 |~#d1~0.offset|) (not (= |~#d1~0.base| |~#d2~0.base|)) (= 0 |~#d2~0.offset|))
[2020-07-20 11:30:23,515 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.startENTRY(line -1)  the Hoare annotation is:  true
[2020-07-20 11:30:23,515 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startFINAL(line -1)  no Hoare annotation was computed.
[2020-07-20 11:30:23,515 INFO  L268        CegarLoopResult]: For program point  L33(line 33)  no Hoare annotation was computed.
[2020-07-20 11:30:23,515 INFO  L268        CegarLoopResult]: For program point  L35-2(lines 35 37)  no Hoare annotation was computed.
[2020-07-20 11:30:23,516 INFO  L271        CegarLoopResult]: At program point  L32(line 32)  the Hoare annotation is:  true
[2020-07-20 11:30:23,516 INFO  L264        CegarLoopResult]: At program point  L33-1(line 33)  the Hoare annotation is:  (or (and (= |~#d2~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d2~0.offset|)) (not (= 0 |~#d1~0.offset|)) (not (= 0 |~#d2~0.offset|)) (and (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|)) (= |~#d1~0.base| |~#d2~0.base|))
[2020-07-20 11:30:23,516 INFO  L268        CegarLoopResult]: For program point  L34-2(lines 34 38)  no Hoare annotation was computed.
[2020-07-20 11:30:23,516 INFO  L268        CegarLoopResult]: For program point  mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42)  no Hoare annotation was computed.
[2020-07-20 11:30:23,516 INFO  L268        CegarLoopResult]: For program point  L33-2(line 33)  no Hoare annotation was computed.
[2020-07-20 11:30:23,517 INFO  L271        CegarLoopResult]: At program point  mainENTRY(lines 30 44)  the Hoare annotation is:  true
[2020-07-20 11:30:23,517 INFO  L268        CegarLoopResult]: For program point  mainEXIT(lines 30 44)  no Hoare annotation was computed.
[2020-07-20 11:30:23,517 INFO  L268        CegarLoopResult]: For program point  mainFINAL(lines 30 44)  no Hoare annotation was computed.
[2020-07-20 11:30:23,517 INFO  L264        CegarLoopResult]: At program point  L36(lines 31 44)  the Hoare annotation is:  (or (not (= 0 |~#d1~0.offset|)) (= |~#d1~0.base| |~#d2~0.base|) (not (= 0 |~#d2~0.offset|)))
[2020-07-20 11:30:23,518 INFO  L264        CegarLoopResult]: At program point  L35(line 35)  the Hoare annotation is:  (let ((.cse0 (= main_~pd2~0.base main_~pd1~0.base))) (or (and (= main_~pd2~0.offset main_~pd1~0.offset) (= |~#d2~0.base| main_~pd1~0.base) (= main_~pd1~0.offset 0) .cse0) (not (= 0 |~#d1~0.offset|)) (not (= 0 |~#d2~0.offset|)) (and (= main_~pd2~0.offset 0) .cse0 (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|)) (= |~#d1~0.base| |~#d2~0.base|)))
[2020-07-20 11:30:23,518 INFO  L268        CegarLoopResult]: For program point  L34(lines 34 38)  no Hoare annotation was computed.
[2020-07-20 11:30:23,518 INFO  L268        CegarLoopResult]: For program point  L35-1(line 35)  no Hoare annotation was computed.
[2020-07-20 11:30:23,518 INFO  L271        CegarLoopResult]: At program point  checkENTRY(lines 25 28)  the Hoare annotation is:  true
[2020-07-20 11:30:23,518 INFO  L268        CegarLoopResult]: For program point  checkFINAL(lines 25 28)  no Hoare annotation was computed.
[2020-07-20 11:30:23,518 INFO  L268        CegarLoopResult]: For program point  checkEXIT(lines 25 28)  no Hoare annotation was computed.
[2020-07-20 11:30:23,537 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:30:23 BoogieIcfgContainer
[2020-07-20 11:30:23,538 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 11:30:23,540 INFO  L168              Benchmark]: Toolchain (without parser) took 3742.50 ms. Allocated memory was 137.9 MB in the beginning and 247.5 MB in the end (delta: 109.6 MB). Free memory was 103.2 MB in the beginning and 172.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB.
[2020-07-20 11:30:23,541 INFO  L168              Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
[2020-07-20 11:30:23,542 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 273.42 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 92.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
[2020-07-20 11:30:23,543 INFO  L168              Benchmark]: Boogie Preprocessor took 123.84 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 92.5 MB in the beginning and 180.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
[2020-07-20 11:30:23,544 INFO  L168              Benchmark]: RCFGBuilder took 349.78 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 163.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB.
[2020-07-20 11:30:23,545 INFO  L168              Benchmark]: TraceAbstraction took 2980.29 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 163.1 MB in the beginning and 172.1 MB in the end (delta: -9.0 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB.
[2020-07-20 11:30:23,549 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 273.42 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 92.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 123.84 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 92.5 MB in the beginning and 180.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 349.78 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 163.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 2980.29 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 163.1 MB in the beginning and 172.1 MB in the end (delta: -9.0 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - PositiveResult [Line: 42]: 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: 31]: Loop Invariant
    Derived loop invariant: (!(0 == d1) || d1 == d2) || !(0 == d2)
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 61 SDslu, 333 SDs, 0 SdLazy, 413 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s Time, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 15 PreInvPairs, 18 NumberOfFragments, 94 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 162 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 15512 SizeOfPredicates, 24 NumberOfNonLiveVariables, 459 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 9/16 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...