/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c


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


This is Ultimate 0.1.25-d623d84
[2020-07-21 02:08:19,602 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-21 02:08:19,605 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 02:08:19,633 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 02:08:19,633 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 02:08:19,636 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 02:08:19,640 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 02:08:19,642 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 02:08:19,645 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 02:08:19,647 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 02:08:19,649 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 02:08:19,650 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 02:08:19,651 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 02:08:19,652 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 02:08:19,653 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 02:08:19,654 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 02:08:19,654 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 02:08:19,655 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 02:08:19,657 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 02:08:19,660 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 02:08:19,663 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 02:08:19,664 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 02:08:19,666 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 02:08:19,668 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 02:08:19,671 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 02:08:19,672 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 02:08:19,672 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 02:08:19,673 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 02:08:19,674 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 02:08:19,675 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 02:08:19,676 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 02:08:19,677 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 02:08:19,678 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 02:08:19,679 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 02:08:19,681 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 02:08:19,681 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 02:08:19,682 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-07-21 02:08:19,683 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-07-21 02:08:19,686 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 02:08:19,687 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-21 02:08:19,706 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-21 02:08:19,706 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 02:08:19,708 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 02:08:19,709 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-07-21 02:08:19,709 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-07-21 02:08:19,710 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 02:08:19,710 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-21 02:08:19,710 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-21 02:08:19,710 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-21 02:08:19,711 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-21 02:08:19,711 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 02:08:19,711 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 02:08:19,711 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 02:08:19,711 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-21 02:08:19,712 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-21 02:08:19,712 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-21 02:08:19,712 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-21 02:08:19,712 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 02:08:19,713 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-07-21 02:08:19,713 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-21 02:08:19,713 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-21 02:08:19,713 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 02:08:19,714 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 02:08:19,714 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 02:08:19,714 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 02:08:19,715 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-07-21 02:08:19,715 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:08:19,715 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 02:08:19,715 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-07-21 02:08:19,715 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4
[2020-07-21 02:08:20,072 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 02:08:20,091 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 02:08:20,097 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 02:08:20,099 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-21 02:08:20,099 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-21 02:08:20,100 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c
[2020-07-21 02:08:20,190 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc1436ee/7c5664e91bcb4dfdba99e0c0885169b3/FLAGa6d20e2d8
[2020-07-21 02:08:20,816 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-21 02:08:20,817 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt5.c
[2020-07-21 02:08:20,827 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc1436ee/7c5664e91bcb4dfdba99e0c0885169b3/FLAGa6d20e2d8
[2020-07-21 02:08:21,181 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc1436ee/7c5664e91bcb4dfdba99e0c0885169b3
[2020-07-21 02:08:21,203 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 02:08:21,210 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 02:08:21,212 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 02:08:21,212 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 02:08:21,219 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 02:08:21,221 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:08:21" (1/1) ...
[2020-07-21 02:08:21,227 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82fd315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:21, skipping insertion in model container
[2020-07-21 02:08:21,228 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:08:21" (1/1) ...
[2020-07-21 02:08:21,243 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-21 02:08:21,270 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-21 02:08:21,628 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-21 02:08:21,637 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-21 02:08:21,667 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-21 02:08:21,694 INFO  L208         MainTranslator]: Completed translation
[2020-07-21 02:08:21,695 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:21 WrapperNode
[2020-07-21 02:08:21,696 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 02:08:21,698 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 02:08:21,698 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 02:08:21,699 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 02:08:21,720 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:21" (1/1) ...
[2020-07-21 02:08:21,721 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:21" (1/1) ...
[2020-07-21 02:08:21,847 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:21" (1/1) ...
[2020-07-21 02:08:21,851 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:21" (1/1) ...
[2020-07-21 02:08:21,862 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:21" (1/1) ...
[2020-07-21 02:08:21,874 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:21" (1/1) ...
[2020-07-21 02:08:21,876 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:21" (1/1) ...
[2020-07-21 02:08:21,877 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 02:08:21,878 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 02:08:21,879 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 02:08:21,879 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-21 02:08:21,881 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:21" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 02:08:21,988 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 02:08:21,989 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 02:08:21,989 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-07-21 02:08:21,989 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-21 02:08:21,989 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 02:08:21,990 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 02:08:21,990 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-07-21 02:08:21,990 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-07-21 02:08:21,990 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-21 02:08:21,990 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-21 02:08:21,990 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-21 02:08:21,991 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 02:08:21,991 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 02:08:22,356 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 02:08:22,357 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-07-21 02:08:22,364 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:08:22 BoogieIcfgContainer
[2020-07-21 02:08:22,365 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 02:08:22,367 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 02:08:22,368 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 02:08:22,376 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-21 02:08:22,377 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:08:21" (1/3) ...
[2020-07-21 02:08:22,379 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487a3e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:08:22, skipping insertion in model container
[2020-07-21 02:08:22,379 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:08:21" (2/3) ...
[2020-07-21 02:08:22,380 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487a3e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:08:22, skipping insertion in model container
[2020-07-21 02:08:22,380 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:08:22" (3/3) ...
[2020-07-21 02:08:22,384 INFO  L109   eAbstractionObserver]: Analyzing ICFG sumt5.c
[2020-07-21 02:08:22,403 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 02:08:22,417 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 02:08:22,439 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 02:08:22,475 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-21 02:08:22,476 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-21 02:08:22,476 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 02:08:22,476 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 02:08:22,476 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 02:08:22,476 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-21 02:08:22,476 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 02:08:22,476 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 02:08:22,504 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states.
[2020-07-21 02:08:22,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-07-21 02:08:22,516 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:08:22,517 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:08:22,519 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:08:22,527 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:08:22,528 INFO  L82        PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times
[2020-07-21 02:08:22,539 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:08:22,540 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857225751]
[2020-07-21 02:08:22,541 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:08:22,746 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-21 02:08:22,747 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:08:22,754 INFO  L263         TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-21 02:08:22,770 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:08:22,815 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 02:08:22,816 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:08:22,818 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857225751]
[2020-07-21 02:08:22,820 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:08:22,821 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-21 02:08:22,823 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943226069]
[2020-07-21 02:08:22,833 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-21 02:08:22,834 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:08:22,860 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-21 02:08:22,862 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 02:08:22,866 INFO  L87              Difference]: Start difference. First operand 25 states. Second operand 2 states.
[2020-07-21 02:08:22,906 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:08:22,907 INFO  L93              Difference]: Finished difference Result 37 states and 45 transitions.
[2020-07-21 02:08:22,907 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2020-07-21 02:08:22,909 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 12
[2020-07-21 02:08:22,910 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:08:22,927 INFO  L225             Difference]: With dead ends: 37
[2020-07-21 02:08:22,927 INFO  L226             Difference]: Without dead ends: 18
[2020-07-21 02:08:22,933 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 02:08:22,955 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2020-07-21 02:08:22,983 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2020-07-21 02:08:22,986 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2020-07-21 02:08:22,988 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions.
[2020-07-21 02:08:22,991 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12
[2020-07-21 02:08:22,992 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:08:22,993 INFO  L479      AbstractCegarLoop]: Abstraction has 18 states and 22 transitions.
[2020-07-21 02:08:22,993 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-21 02:08:22,993 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions.
[2020-07-21 02:08:22,994 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-07-21 02:08:22,994 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:08:22,995 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:08:23,210 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:08:23,211 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:08:23,212 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:08:23,213 INFO  L82        PathProgramCache]: Analyzing trace with hash 309875524, now seen corresponding path program 1 times
[2020-07-21 02:08:23,214 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:08:23,214 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796246044]
[2020-07-21 02:08:23,214 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
[2020-07-21 02:08:23,265 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-21 02:08:23,266 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:08:23,268 INFO  L263         TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 17 conjunts are in the unsatisfiable core
[2020-07-21 02:08:23,271 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:08:23,392 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 02:08:23,392 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:08:23,393 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796246044]
[2020-07-21 02:08:23,393 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:08:23,393 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-21 02:08:23,394 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796290493]
[2020-07-21 02:08:23,395 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-21 02:08:23,396 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:08:23,396 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-21 02:08:23,397 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:08:23,397 INFO  L87              Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states.
[2020-07-21 02:08:23,558 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:08:23,559 INFO  L93              Difference]: Finished difference Result 34 states and 44 transitions.
[2020-07-21 02:08:23,559 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-07-21 02:08:23,559 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 12
[2020-07-21 02:08:23,560 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:08:23,561 INFO  L225             Difference]: With dead ends: 34
[2020-07-21 02:08:23,561 INFO  L226             Difference]: Without dead ends: 20
[2020-07-21 02:08:23,563 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-07-21 02:08:23,564 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2020-07-21 02:08:23,569 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2020-07-21 02:08:23,569 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2020-07-21 02:08:23,570 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions.
[2020-07-21 02:08:23,571 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12
[2020-07-21 02:08:23,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:08:23,571 INFO  L479      AbstractCegarLoop]: Abstraction has 20 states and 24 transitions.
[2020-07-21 02:08:23,572 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-21 02:08:23,572 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions.
[2020-07-21 02:08:23,573 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-07-21 02:08:23,573 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:08:23,573 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:08:23,787 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:08:23,788 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:08:23,789 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:08:23,790 INFO  L82        PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times
[2020-07-21 02:08:23,791 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:08:23,791 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743954394]
[2020-07-21 02:08:23,792 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 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
[2020-07-21 02:08:23,846 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-21 02:08:23,847 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:08:23,849 INFO  L263         TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core
[2020-07-21 02:08:23,851 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:08:24,225 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 02:08:24,231 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2020-07-21 02:08:24,306 INFO  L501       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-21 02:08:24,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 02:08:24,695 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743954394]
[2020-07-21 02:08:24,696 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-21 02:08:24,696 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14
[2020-07-21 02:08:24,696 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464397302]
[2020-07-21 02:08:24,697 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-07-21 02:08:24,698 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:08:24,699 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-07-21 02:08:24,700 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182
[2020-07-21 02:08:24,700 INFO  L87              Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 14 states.
[2020-07-21 02:08:31,381 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:08:31,381 INFO  L93              Difference]: Finished difference Result 43 states and 57 transitions.
[2020-07-21 02:08:31,382 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-07-21 02:08:31,383 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 15
[2020-07-21 02:08:31,383 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:08:31,384 INFO  L225             Difference]: With dead ends: 43
[2020-07-21 02:08:31,385 INFO  L226             Difference]: Without dead ends: 28
[2020-07-21 02:08:31,386 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210
[2020-07-21 02:08:31,388 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2020-07-21 02:08:31,397 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2020-07-21 02:08:31,398 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-07-21 02:08:31,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2020-07-21 02:08:31,400 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15
[2020-07-21 02:08:31,400 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:08:31,401 INFO  L479      AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2020-07-21 02:08:31,401 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-07-21 02:08:31,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2020-07-21 02:08:31,402 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-07-21 02:08:31,403 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:08:31,403 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:08:31,617 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:08:31,618 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:08:31,619 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:08:31,619 INFO  L82        PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 1 times
[2020-07-21 02:08:31,620 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:08:31,620 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479504171]
[2020-07-21 02:08:31,621 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:08:31,671 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-21 02:08:31,671 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:08:31,673 INFO  L263         TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-07-21 02:08:31,676 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:08:31,720 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 02:08:31,721 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2020-07-21 02:08:40,125 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 02:08:40,127 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479504171]
[2020-07-21 02:08:40,127 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-21 02:08:40,128 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2020-07-21 02:08:40,128 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482889002]
[2020-07-21 02:08:40,129 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-07-21 02:08:40,130 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:08:40,130 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-07-21 02:08:40,131 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=31, Unknown=4, NotChecked=0, Total=56
[2020-07-21 02:08:40,131 INFO  L87              Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states.
[2020-07-21 02:08:42,327 WARN  L838   $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296))) is different from false
[2020-07-21 02:09:38,569 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:09:38,570 INFO  L93              Difference]: Finished difference Result 54 states and 73 transitions.
[2020-07-21 02:09:38,572 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-07-21 02:09:38,573 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 24
[2020-07-21 02:09:38,573 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:09:38,576 INFO  L225             Difference]: With dead ends: 54
[2020-07-21 02:09:38,576 INFO  L226             Difference]: Without dead ends: 43
[2020-07-21 02:09:38,577 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=23, Invalid=32, Unknown=5, NotChecked=12, Total=72
[2020-07-21 02:09:38,579 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2020-07-21 02:09:38,589 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41.
[2020-07-21 02:09:38,590 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2020-07-21 02:09:38,591 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions.
[2020-07-21 02:09:38,592 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 24
[2020-07-21 02:09:38,593 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:09:38,593 INFO  L479      AbstractCegarLoop]: Abstraction has 41 states and 50 transitions.
[2020-07-21 02:09:38,593 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-07-21 02:09:38,593 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions.
[2020-07-21 02:09:38,594 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-07-21 02:09:38,595 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:09:38,595 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:09:38,799 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:09:38,800 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:09:38,800 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:09:38,801 INFO  L82        PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times
[2020-07-21 02:09:38,801 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:09:38,802 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056007091]
[2020-07-21 02:09:38,803 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:09:38,865 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-21 02:09:38,866 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:09:38,869 INFO  L263         TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 30 conjunts are in the unsatisfiable core
[2020-07-21 02:09:38,871 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:09:39,381 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 02:09:39,382 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2020-07-21 02:09:39,452 INFO  L501       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-21 02:10:17,350 WARN  L193               SmtUtils]: Spent 29.20 s on a formula simplification. DAG size of input: 49 DAG size of output: 29
[2020-07-21 02:10:25,833 WARN  L193               SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 36
[2020-07-21 02:10:34,300 WARN  L193               SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 38
[2020-07-21 02:10:49,001 WARN  L193               SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 38
[2020-07-21 02:11:07,829 WARN  L193               SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 38
[2020-07-21 02:11:26,569 WARN  L193               SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 38
[2020-07-21 02:11:26,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 02:11:26,590 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056007091]
[2020-07-21 02:11:26,590 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-21 02:11:26,590 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23
[2020-07-21 02:11:26,591 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468249438]
[2020-07-21 02:11:26,591 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-07-21 02:11:26,591 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:11:26,591 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-07-21 02:11:26,592 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=373, Unknown=30, NotChecked=0, Total=506
[2020-07-21 02:11:26,592 INFO  L87              Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 23 states.
[2020-07-21 02:11:31,074 WARN  L838   $PredicateComparison]: unable to prove that (let ((.cse4 (+ c_main_~l~0 2))) (let ((.cse0 (= 0 (mod (mod (mod .cse4 4294967296) 5) 4294967296))) (.cse1 (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 3) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 2) 4294967296))))) (.cse2 (mod (+ c_main_~l~0 3) 4294967296)) (.cse3 (+ c_main_~l~0 1))) (and (or .cse0 .cse1 (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 2) 4294967296) .cse2)) (or .cse0 .cse1 (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 3) 4294967296) .cse2)) (or (< (mod .cse3 4294967296) (mod c_main_~n~0 4294967296)) (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0) 4294967296) (mod .cse3 4294967296))) (or (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 1) 4294967296) (mod .cse4 4294967296)) (= 0 (mod (mod (mod .cse3 4294967296) 5) 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))))))) is different from false
[2020-07-21 02:12:22,792 WARN  L193               SmtUtils]: Spent 35.11 s on a formula simplification that was a NOOP. DAG size: 72
[2020-07-21 02:13:26,818 WARN  L193               SmtUtils]: Spent 36.28 s on a formula simplification that was a NOOP. DAG size: 66
[2020-07-21 02:13:35,294 WARN  L838   $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_main_~l~0 1))) (let ((.cse0 (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 1) 4294967296) (mod .cse2 4294967296))) (.cse1 (= 0 (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296)))) (and (or .cse0 (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296)))) .cse1) (or .cse0 (< (mod .cse2 4294967296) (mod c_main_~n~0 4294967296)) .cse1) (or (= 0 (mod (mod (mod .cse2 4294967296) 5) 4294967296)) (= (mod (+ c_main_~l~0 2) 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 2) 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296))))) (or (< (mod c_main_~l~0 4294967296) (mod c_main_~n~0 4294967296)) (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0) 4294967296) (mod c_main_~l~0 4294967296)))))) is different from false
[2020-07-21 02:13:37,432 WARN  L860   $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_main_~l~0 1))) (let ((.cse0 (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 1) 4294967296) (mod .cse2 4294967296))) (.cse1 (= 0 (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296)))) (and (or .cse0 (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296)))) .cse1) (or .cse0 (< (mod .cse2 4294967296) (mod c_main_~n~0 4294967296)) .cse1) (or (= 0 (mod (mod (mod .cse2 4294967296) 5) 4294967296)) (= (mod (+ c_main_~l~0 2) 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 2) 4294967296)) (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296))))) (or (< (mod c_main_~l~0 4294967296) (mod c_main_~n~0 4294967296)) (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0) 4294967296) (mod c_main_~l~0 4294967296)))))) is different from true
[2020-07-21 02:13:58,961 WARN  L193               SmtUtils]: Spent 8.62 s on a formula simplification that was a NOOP. DAG size: 51
[2020-07-21 02:15:06,067 WARN  L193               SmtUtils]: Spent 21.46 s on a formula simplification that was a NOOP. DAG size: 38
[2020-07-21 02:15:40,416 WARN  L193               SmtUtils]: Spent 6.46 s on a formula simplification that was a NOOP. DAG size: 51
[2020-07-21 02:15:51,350 WARN  L860   $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_main_~l~0 1))) (let ((.cse0 (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 1) 4294967296) (mod .cse2 4294967296))) (.cse1 (= 0 (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296)))) (and (or .cse0 (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296)))) .cse1) (or .cse0 (< (mod .cse2 4294967296) (mod c_main_~n~0 4294967296)) .cse1) (or (< (mod c_main_~l~0 4294967296) (mod c_main_~n~0 4294967296)) (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0) 4294967296) (mod c_main_~l~0 4294967296)))))) is different from true
[2020-07-21 02:16:23,468 WARN  L193               SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 49
[2020-07-21 02:17:18,249 WARN  L193               SmtUtils]: Spent 7.86 s on a formula simplification. DAG size of input: 43 DAG size of output: 12
[2020-07-21 02:17:39,630 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:17:39,630 INFO  L93              Difference]: Finished difference Result 76 states and 101 transitions.
[2020-07-21 02:17:39,631 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2020-07-21 02:17:39,632 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states. Word has length 27
[2020-07-21 02:17:39,632 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:17:39,633 INFO  L225             Difference]: With dead ends: 76
[2020-07-21 02:17:39,633 INFO  L226             Difference]: Without dead ends: 55
[2020-07-21 02:17:39,634 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 366.6s TimeCoverageRelationStatistics Valid=192, Invalid=656, Unknown=94, NotChecked=180, Total=1122
[2020-07-21 02:17:39,635 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2020-07-21 02:17:39,642 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53.
[2020-07-21 02:17:39,642 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2020-07-21 02:17:39,644 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions.
[2020-07-21 02:17:39,644 INFO  L78                 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 27
[2020-07-21 02:17:39,644 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:17:39,645 INFO  L479      AbstractCegarLoop]: Abstraction has 53 states and 66 transitions.
[2020-07-21 02:17:39,645 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-07-21 02:17:39,645 INFO  L276                IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions.
[2020-07-21 02:17:39,646 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2020-07-21 02:17:39,646 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:17:39,646 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:17:39,860 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:17:39,861 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:17:39,861 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:17:39,862 INFO  L82        PathProgramCache]: Analyzing trace with hash 1204685030, now seen corresponding path program 1 times
[2020-07-21 02:17:39,862 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:17:39,863 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219336782]
[2020-07-21 02:17:39,863 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:17:39,908 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-21 02:17:39,908 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:17:39,910 INFO  L263         TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 37 conjunts are in the unsatisfiable core
[2020-07-21 02:17:39,912 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:17:40,360 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 02:17:40,360 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2020-07-21 02:17:40,411 INFO  L501       QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts
[2020-07-21 02:18:24,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 35 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 02:18:24,544 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219336782]
[2020-07-21 02:18:24,544 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-21 02:18:24,545 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30
[2020-07-21 02:18:24,547 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140864477]
[2020-07-21 02:18:24,548 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 30 states
[2020-07-21 02:18:24,548 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:18:24,548 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2020-07-21 02:18:24,549 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=699, Unknown=20, NotChecked=0, Total=870
[2020-07-21 02:18:24,549 INFO  L87              Difference]: Start difference. First operand 53 states and 66 transitions. Second operand 30 states.
[2020-07-21 02:18:38,578 WARN  L193               SmtUtils]: Spent 13.08 s on a formula simplification. DAG size of input: 99 DAG size of output: 22
[2020-07-21 02:19:12,099 WARN  L193               SmtUtils]: Spent 24.62 s on a formula simplification. DAG size of input: 90 DAG size of output: 48
[2020-07-21 02:20:04,971 WARN  L193               SmtUtils]: Spent 44.33 s on a formula simplification. DAG size of input: 98 DAG size of output: 44
[2020-07-21 02:20:44,568 WARN  L193               SmtUtils]: Spent 28.76 s on a formula simplification. DAG size of input: 77 DAG size of output: 24
[2020-07-21 02:21:20,429 WARN  L193               SmtUtils]: Spent 17.22 s on a formula simplification. DAG size of input: 56 DAG size of output: 37
[2020-07-21 02:22:09,690 WARN  L193               SmtUtils]: Spent 23.54 s on a formula simplification. DAG size of input: 71 DAG size of output: 37
[2020-07-21 02:22:49,008 WARN  L193               SmtUtils]: Spent 21.22 s on a formula simplification. DAG size of input: 81 DAG size of output: 29