/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/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.1.25-d623d84
[2020-07-21 02:24:01,705 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-21 02:24:01,708 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 02:24:01,728 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 02:24:01,728 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 02:24:01,730 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 02:24:01,733 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 02:24:01,744 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 02:24:01,749 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 02:24:01,750 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 02:24:01,751 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2020-07-21 02:24:01,752 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 02:24:01,753 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 02:24:01,754 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 02:24:01,755 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 02:24:01,756 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 02:24:01,757 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 02:24:01,758 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 02:24:01,760 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 02:24:01,761 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 02:24:01,762 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 02:24:01,763 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 02:24:01,764 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 02:24:01,766 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 02:24:01,766 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 02:24:01,766 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 02:24:01,767 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 02:24:01,768 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 02:24:01,768 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 02:24:01,769 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 02:24:01,769 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 02:24:01,770 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 02:24:01,771 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 02:24:01,772 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 02:24:01,772 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-07-21 02:24:01,773 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-07-21 02:24:01,774 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 02:24:01,775 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 02:24:01,789 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-21 02:24:01,790 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 02:24:01,791 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 02:24:01,791 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-07-21 02:24:01,791 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-07-21 02:24:01,792 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 02:24:01,792 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-21 02:24:01,792 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-21 02:24:01,792 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-21 02:24:01,792 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-21 02:24:01,792 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 02:24:01,793 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 02:24:01,793 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 02:24:01,793 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-21 02:24:01,793 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-21 02:24:01,793 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-21 02:24:01,794 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-21 02:24:01,794 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 02:24:01,794 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-07-21 02:24:01,794 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-21 02:24:01,794 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-21 02:24:01,795 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 02:24:01,795 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 02:24:01,795 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 02:24:01,795 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 02:24:01,795 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-07-21 02:24:01,796 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:01,796 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 02:24:01,796 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-07-21 02:24:01,796 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 02:24:02,136 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 02:24:02,150 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 02:24:02,154 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 02:24:02,156 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-21 02:24:02,156 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-21 02:24:02,157 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-07-21 02:24:02,220 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbef48a6c/8598b40fc05e4988a7a214c1b9e91e58/FLAGcf07f1c99
[2020-07-21 02:24:02,862 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-21 02:24:02,862 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-07-21 02:24:02,882 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbef48a6c/8598b40fc05e4988a7a214c1b9e91e58/FLAGcf07f1c99
[2020-07-21 02:24:03,001 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbef48a6c/8598b40fc05e4988a7a214c1b9e91e58
[2020-07-21 02:24:03,010 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 02:24:03,012 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 02:24:03,013 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 02:24:03,013 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 02:24:03,017 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 02:24:03,018 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:24:03" (1/1) ...
[2020-07-21 02:24:03,021 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75624043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:03, skipping insertion in model container
[2020-07-21 02:24:03,021 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:24:03" (1/1) ...
[2020-07-21 02:24:03,030 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-21 02:24:03,196 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-21 02:24:04,711 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-21 02:24:04,724 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-21 02:24:05,757 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-21 02:24:05,787 INFO  L208         MainTranslator]: Completed translation
[2020-07-21 02:24:05,788 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05 WrapperNode
[2020-07-21 02:24:05,788 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 02:24:05,789 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 02:24:05,789 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 02:24:05,790 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 02:24:05,811 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ...
[2020-07-21 02:24:05,814 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ...
[2020-07-21 02:24:05,883 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ...
[2020-07-21 02:24:05,883 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ...
[2020-07-21 02:24:05,979 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ...
[2020-07-21 02:24:06,028 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ...
[2020-07-21 02:24:06,038 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (1/1) ...
[2020-07-21 02:24:06,054 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 02:24:06,055 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 02:24:06,055 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 02:24:06,055 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-21 02:24:06,056 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (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 02:24:06,140 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 02:24:06,140 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 02:24:06,141 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-07-21 02:24:06,141 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 02:24:06,141 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 02:24:06,142 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2020-07-21 02:24:06,142 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2020-07-21 02:24:06,142 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-07-21 02:24:06,142 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2020-07-21 02:24:06,142 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-07-21 02:24:06,143 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-07-21 02:24:06,143 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-07-21 02:24:06,143 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2020-07-21 02:24:06,143 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2020-07-21 02:24:06,144 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2020-07-21 02:24:06,144 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2020-07-21 02:24:06,144 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2020-07-21 02:24:06,144 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-07-21 02:24:06,144 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-07-21 02:24:06,145 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-21 02:24:06,145 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 02:24:06,145 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 02:24:09,540 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 02:24:09,541 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-21 02:24:09,551 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:24:09 BoogieIcfgContainer
[2020-07-21 02:24:09,551 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 02:24:09,552 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 02:24:09,553 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 02:24:09,556 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-21 02:24:09,556 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:24:03" (1/3) ...
[2020-07-21 02:24:09,557 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760527be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:24:09, skipping insertion in model container
[2020-07-21 02:24:09,557 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:24:05" (2/3) ...
[2020-07-21 02:24:09,557 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760527be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:24:09, skipping insertion in model container
[2020-07-21 02:24:09,558 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:24:09" (3/3) ...
[2020-07-21 02:24:09,559 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-07-21 02:24:09,570 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 02:24:09,580 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations.
[2020-07-21 02:24:09,596 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 12 error locations.
[2020-07-21 02:24:09,626 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-21 02:24:09,626 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-21 02:24:09,626 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 02:24:09,627 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 02:24:09,627 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 02:24:09,627 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-21 02:24:09,627 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 02:24:09,627 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 02:24:09,666 INFO  L276                IsEmpty]: Start isEmpty. Operand 1027 states.
[2020-07-21 02:24:09,706 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2020-07-21 02:24:09,706 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:09,708 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1]
[2020-07-21 02:24:09,708 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:09,714 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:09,715 INFO  L82        PathProgramCache]: Analyzing trace with hash -537993708, now seen corresponding path program 1 times
[2020-07-21 02:24:09,724 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:09,724 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180957928]
[2020-07-21 02:24:09,725 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 02:24:10,204 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:24:10,205 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:10,213 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-21 02:24:10,232 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:10,567 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 02:24:10,568 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:10,569 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180957928]
[2020-07-21 02:24:10,569 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:10,570 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 02:24:10,571 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827821390]
[2020-07-21 02:24:10,577 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 02:24:10,577 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:10,591 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 02:24:10,592 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 02:24:10,595 INFO  L87              Difference]: Start difference. First operand 1027 states. Second operand 4 states.
[2020-07-21 02:24:10,910 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:10,910 INFO  L93              Difference]: Finished difference Result 3027 states and 5427 transitions.
[2020-07-21 02:24:10,911 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-07-21 02:24:10,912 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 327
[2020-07-21 02:24:10,913 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:10,941 INFO  L225             Difference]: With dead ends: 3027
[2020-07-21 02:24:10,941 INFO  L226             Difference]: Without dead ends: 2005
[2020-07-21 02:24:10,950 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:24:10,974 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2005 states.
[2020-07-21 02:24:11,081 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1904.
[2020-07-21 02:24:11,083 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1904 states.
[2020-07-21 02:24:11,091 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2895 transitions.
[2020-07-21 02:24:11,093 INFO  L78                 Accepts]: Start accepts. Automaton has 1904 states and 2895 transitions. Word has length 327
[2020-07-21 02:24:11,094 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:11,094 INFO  L479      AbstractCegarLoop]: Abstraction has 1904 states and 2895 transitions.
[2020-07-21 02:24:11,094 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 02:24:11,094 INFO  L276                IsEmpty]: Start isEmpty. Operand 1904 states and 2895 transitions.
[2020-07-21 02:24:11,103 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 330
[2020-07-21 02:24:11,104 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:11,104 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1]
[2020-07-21 02:24:11,317 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:11,318 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:11,318 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:11,319 INFO  L82        PathProgramCache]: Analyzing trace with hash -2119643028, now seen corresponding path program 1 times
[2020-07-21 02:24:11,319 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:11,319 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777287936]
[2020-07-21 02:24:11,319 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 02:24:11,629 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:24:11,629 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:11,635 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:24:11,646 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:11,784 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 02:24:11,785 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:11,785 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777287936]
[2020-07-21 02:24:11,786 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:11,786 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:24:11,786 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441349969]
[2020-07-21 02:24:11,788 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:24:11,788 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:11,789 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:24:11,789 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:11,789 INFO  L87              Difference]: Start difference. First operand 1904 states and 2895 transitions. Second operand 3 states.
[2020-07-21 02:24:11,937 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:11,938 INFO  L93              Difference]: Finished difference Result 5671 states and 8621 transitions.
[2020-07-21 02:24:11,938 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:24:11,938 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 329
[2020-07-21 02:24:11,939 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:11,959 INFO  L225             Difference]: With dead ends: 5671
[2020-07-21 02:24:11,959 INFO  L226             Difference]: Without dead ends: 3790
[2020-07-21 02:24:11,965 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:11,973 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3790 states.
[2020-07-21 02:24:12,078 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 1915.
[2020-07-21 02:24:12,079 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1915 states.
[2020-07-21 02:24:12,089 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2911 transitions.
[2020-07-21 02:24:12,090 INFO  L78                 Accepts]: Start accepts. Automaton has 1915 states and 2911 transitions. Word has length 329
[2020-07-21 02:24:12,090 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:12,090 INFO  L479      AbstractCegarLoop]: Abstraction has 1915 states and 2911 transitions.
[2020-07-21 02:24:12,090 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:24:12,091 INFO  L276                IsEmpty]: Start isEmpty. Operand 1915 states and 2911 transitions.
[2020-07-21 02:24:12,101 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 330
[2020-07-21 02:24:12,101 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:12,102 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1]
[2020-07-21 02:24:12,316 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:12,317 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:12,317 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:12,317 INFO  L82        PathProgramCache]: Analyzing trace with hash 1677044561, now seen corresponding path program 1 times
[2020-07-21 02:24:12,318 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:12,318 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556721865]
[2020-07-21 02:24:12,319 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 02:24:12,632 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:24:12,632 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:12,638 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:24:12,645 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:12,827 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 02:24:12,828 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:12,828 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556721865]
[2020-07-21 02:24:12,828 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:12,829 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:24:12,829 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401528052]
[2020-07-21 02:24:12,831 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:24:12,832 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:12,832 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:24:12,833 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:12,833 INFO  L87              Difference]: Start difference. First operand 1915 states and 2911 transitions. Second operand 3 states.
[2020-07-21 02:24:13,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:13,067 INFO  L93              Difference]: Finished difference Result 5504 states and 8321 transitions.
[2020-07-21 02:24:13,068 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:24:13,068 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 329
[2020-07-21 02:24:13,069 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:13,087 INFO  L225             Difference]: With dead ends: 5504
[2020-07-21 02:24:13,087 INFO  L226             Difference]: Without dead ends: 3740
[2020-07-21 02:24:13,095 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:13,102 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3740 states.
[2020-07-21 02:24:13,246 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3641.
[2020-07-21 02:24:13,246 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3641 states.
[2020-07-21 02:24:13,261 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 5529 transitions.
[2020-07-21 02:24:13,261 INFO  L78                 Accepts]: Start accepts. Automaton has 3641 states and 5529 transitions. Word has length 329
[2020-07-21 02:24:13,264 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:13,264 INFO  L479      AbstractCegarLoop]: Abstraction has 3641 states and 5529 transitions.
[2020-07-21 02:24:13,264 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:24:13,264 INFO  L276                IsEmpty]: Start isEmpty. Operand 3641 states and 5529 transitions.
[2020-07-21 02:24:13,276 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 331
[2020-07-21 02:24:13,276 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:13,276 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1]
[2020-07-21 02:24:13,489 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:13,490 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:13,490 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:13,491 INFO  L82        PathProgramCache]: Analyzing trace with hash -591387259, now seen corresponding path program 1 times
[2020-07-21 02:24:13,491 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:13,491 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529424397]
[2020-07-21 02:24:13,492 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 02:24:13,812 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:24:13,813 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:13,818 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:24:13,825 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:13,950 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 02:24:13,950 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:13,951 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529424397]
[2020-07-21 02:24:13,951 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:13,951 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:24:13,951 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423973240]
[2020-07-21 02:24:13,952 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:24:13,952 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:13,952 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:24:13,953 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:13,953 INFO  L87              Difference]: Start difference. First operand 3641 states and 5529 transitions. Second operand 3 states.
[2020-07-21 02:24:14,179 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:14,179 INFO  L93              Difference]: Finished difference Result 10828 states and 16433 transitions.
[2020-07-21 02:24:14,180 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:24:14,180 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 330
[2020-07-21 02:24:14,180 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:14,213 INFO  L225             Difference]: With dead ends: 10828
[2020-07-21 02:24:14,213 INFO  L226             Difference]: Without dead ends: 7237
[2020-07-21 02:24:14,223 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:14,233 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7237 states.
[2020-07-21 02:24:14,390 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7237 to 3657.
[2020-07-21 02:24:14,390 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3657 states.
[2020-07-21 02:24:14,402 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 5548 transitions.
[2020-07-21 02:24:14,402 INFO  L78                 Accepts]: Start accepts. Automaton has 3657 states and 5548 transitions. Word has length 330
[2020-07-21 02:24:14,402 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:14,403 INFO  L479      AbstractCegarLoop]: Abstraction has 3657 states and 5548 transitions.
[2020-07-21 02:24:14,403 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:24:14,403 INFO  L276                IsEmpty]: Start isEmpty. Operand 3657 states and 5548 transitions.
[2020-07-21 02:24:14,418 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 332
[2020-07-21 02:24:14,419 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:14,419 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:14,633 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:14,634 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:14,634 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:14,635 INFO  L82        PathProgramCache]: Analyzing trace with hash -979200554, now seen corresponding path program 1 times
[2020-07-21 02:24:14,635 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:14,635 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721049324]
[2020-07-21 02:24:14,635 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 02:24:14,927 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:24:14,928 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:14,933 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-21 02:24:14,939 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:15,051 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 02:24:15,052 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:15,052 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721049324]
[2020-07-21 02:24:15,052 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:15,053 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 02:24:15,053 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595930921]
[2020-07-21 02:24:15,054 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 02:24:15,054 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:15,054 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 02:24:15,055 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 02:24:15,055 INFO  L87              Difference]: Start difference. First operand 3657 states and 5548 transitions. Second operand 4 states.
[2020-07-21 02:24:15,357 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:15,357 INFO  L93              Difference]: Finished difference Result 8097 states and 12284 transitions.
[2020-07-21 02:24:15,358 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-21 02:24:15,358 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 331
[2020-07-21 02:24:15,359 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:15,386 INFO  L225             Difference]: With dead ends: 8097
[2020-07-21 02:24:15,387 INFO  L226             Difference]: Without dead ends: 4142
[2020-07-21 02:24:15,408 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:24:15,415 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4142 states.
[2020-07-21 02:24:15,637 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 4043.
[2020-07-21 02:24:15,639 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4043 states.
[2020-07-21 02:24:15,653 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 6116 transitions.
[2020-07-21 02:24:15,653 INFO  L78                 Accepts]: Start accepts. Automaton has 4043 states and 6116 transitions. Word has length 331
[2020-07-21 02:24:15,654 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:15,654 INFO  L479      AbstractCegarLoop]: Abstraction has 4043 states and 6116 transitions.
[2020-07-21 02:24:15,654 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 02:24:15,654 INFO  L276                IsEmpty]: Start isEmpty. Operand 4043 states and 6116 transitions.
[2020-07-21 02:24:15,669 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 334
[2020-07-21 02:24:15,670 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:15,670 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:15,883 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:15,884 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:15,884 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:15,885 INFO  L82        PathProgramCache]: Analyzing trace with hash 518618689, now seen corresponding path program 1 times
[2020-07-21 02:24:15,885 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:15,885 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802549737]
[2020-07-21 02:24:15,886 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 02:24:16,179 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:24:16,179 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:16,185 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:24:16,191 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:16,307 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 02:24:16,307 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:16,308 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802549737]
[2020-07-21 02:24:16,308 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:16,309 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:24:16,309 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363143457]
[2020-07-21 02:24:16,310 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:24:16,310 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:16,311 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:24:16,311 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:16,311 INFO  L87              Difference]: Start difference. First operand 4043 states and 6116 transitions. Second operand 3 states.
[2020-07-21 02:24:16,573 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:16,573 INFO  L93              Difference]: Finished difference Result 11715 states and 17689 transitions.
[2020-07-21 02:24:16,574 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:24:16,574 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 333
[2020-07-21 02:24:16,574 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:16,607 INFO  L225             Difference]: With dead ends: 11715
[2020-07-21 02:24:16,607 INFO  L226             Difference]: Without dead ends: 7714
[2020-07-21 02:24:16,618 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:16,628 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7714 states.
[2020-07-21 02:24:16,808 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7714 to 4038.
[2020-07-21 02:24:16,808 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4038 states.
[2020-07-21 02:24:16,820 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 6105 transitions.
[2020-07-21 02:24:16,820 INFO  L78                 Accepts]: Start accepts. Automaton has 4038 states and 6105 transitions. Word has length 333
[2020-07-21 02:24:16,820 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:16,821 INFO  L479      AbstractCegarLoop]: Abstraction has 4038 states and 6105 transitions.
[2020-07-21 02:24:16,821 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:24:16,821 INFO  L276                IsEmpty]: Start isEmpty. Operand 4038 states and 6105 transitions.
[2020-07-21 02:24:16,831 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 334
[2020-07-21 02:24:16,831 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:16,832 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:17,045 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:17,046 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:17,046 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:17,046 INFO  L82        PathProgramCache]: Analyzing trace with hash 1976118812, now seen corresponding path program 1 times
[2020-07-21 02:24:17,047 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:17,047 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763766504]
[2020-07-21 02:24:17,048 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:17,318 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:24:17,319 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:17,325 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-07-21 02:24:17,331 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:17,408 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 02:24:17,409 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:17,409 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763766504]
[2020-07-21 02:24:17,409 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:17,410 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 02:24:17,410 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237611429]
[2020-07-21 02:24:17,411 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 02:24:17,411 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:17,411 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 02:24:17,411 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 02:24:17,412 INFO  L87              Difference]: Start difference. First operand 4038 states and 6105 transitions. Second operand 4 states.
[2020-07-21 02:24:17,755 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:17,755 INFO  L93              Difference]: Finished difference Result 11548 states and 17355 transitions.
[2020-07-21 02:24:17,756 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-21 02:24:17,756 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 333
[2020-07-21 02:24:17,756 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:17,778 INFO  L225             Difference]: With dead ends: 11548
[2020-07-21 02:24:17,779 INFO  L226             Difference]: Without dead ends: 7913
[2020-07-21 02:24:17,788 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:24:17,799 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7913 states.
[2020-07-21 02:24:18,079 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 4338.
[2020-07-21 02:24:18,080 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4338 states.
[2020-07-21 02:24:18,097 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 6615 transitions.
[2020-07-21 02:24:18,098 INFO  L78                 Accepts]: Start accepts. Automaton has 4338 states and 6615 transitions. Word has length 333
[2020-07-21 02:24:18,098 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:18,098 INFO  L479      AbstractCegarLoop]: Abstraction has 4338 states and 6615 transitions.
[2020-07-21 02:24:18,098 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 02:24:18,099 INFO  L276                IsEmpty]: Start isEmpty. Operand 4338 states and 6615 transitions.
[2020-07-21 02:24:18,114 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 334
[2020-07-21 02:24:18,114 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:18,115 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:18,328 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:18,329 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:18,329 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:18,330 INFO  L82        PathProgramCache]: Analyzing trace with hash -156138669, now seen corresponding path program 1 times
[2020-07-21 02:24:18,330 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:18,330 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812698783]
[2020-07-21 02:24:18,331 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:18,667 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:24:18,667 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:18,673 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:24:18,683 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:18,830 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 02:24:18,831 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:18,831 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812698783]
[2020-07-21 02:24:18,831 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:18,832 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:24:18,832 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784537759]
[2020-07-21 02:24:18,833 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:24:18,833 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:18,833 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:24:18,834 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:18,836 INFO  L87              Difference]: Start difference. First operand 4338 states and 6615 transitions. Second operand 3 states.
[2020-07-21 02:24:19,301 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:19,301 INFO  L93              Difference]: Finished difference Result 12091 states and 18280 transitions.
[2020-07-21 02:24:19,302 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:24:19,302 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 333
[2020-07-21 02:24:19,302 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:19,322 INFO  L225             Difference]: With dead ends: 12091
[2020-07-21 02:24:19,323 INFO  L226             Difference]: Without dead ends: 8276
[2020-07-21 02:24:19,331 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:19,341 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8276 states.
[2020-07-21 02:24:19,656 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 8160.
[2020-07-21 02:24:19,657 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8160 states.
[2020-07-21 02:24:19,672 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8160 states to 8160 states and 12359 transitions.
[2020-07-21 02:24:19,672 INFO  L78                 Accepts]: Start accepts. Automaton has 8160 states and 12359 transitions. Word has length 333
[2020-07-21 02:24:19,673 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:19,673 INFO  L479      AbstractCegarLoop]: Abstraction has 8160 states and 12359 transitions.
[2020-07-21 02:24:19,673 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:24:19,673 INFO  L276                IsEmpty]: Start isEmpty. Operand 8160 states and 12359 transitions.
[2020-07-21 02:24:19,691 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 334
[2020-07-21 02:24:19,691 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:19,692 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:19,906 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:19,907 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:19,907 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:19,907 INFO  L82        PathProgramCache]: Analyzing trace with hash -506759930, now seen corresponding path program 1 times
[2020-07-21 02:24:19,908 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:19,908 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305050706]
[2020-07-21 02:24:19,908 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:20,222 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:24:20,223 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:20,232 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-07-21 02:24:20,245 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:20,502 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 02:24:20,502 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:20,503 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305050706]
[2020-07-21 02:24:20,506 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:20,506 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-07-21 02:24:20,506 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646473667]
[2020-07-21 02:24:20,507 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-07-21 02:24:20,507 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:20,507 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-07-21 02:24:20,508 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2020-07-21 02:24:20,508 INFO  L87              Difference]: Start difference. First operand 8160 states and 12359 transitions. Second operand 8 states.
[2020-07-21 02:24:23,330 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:23,331 INFO  L93              Difference]: Finished difference Result 18416 states and 27853 transitions.
[2020-07-21 02:24:23,331 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-07-21 02:24:23,332 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 333
[2020-07-21 02:24:23,332 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:23,363 INFO  L225             Difference]: With dead ends: 18416
[2020-07-21 02:24:23,363 INFO  L226             Difference]: Without dead ends: 13184
[2020-07-21 02:24:23,381 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240
[2020-07-21 02:24:23,405 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13184 states.
[2020-07-21 02:24:24,088 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13184 to 10428.
[2020-07-21 02:24:24,088 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10428 states.
[2020-07-21 02:24:24,105 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10428 states to 10428 states and 15687 transitions.
[2020-07-21 02:24:24,105 INFO  L78                 Accepts]: Start accepts. Automaton has 10428 states and 15687 transitions. Word has length 333
[2020-07-21 02:24:24,106 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:24,106 INFO  L479      AbstractCegarLoop]: Abstraction has 10428 states and 15687 transitions.
[2020-07-21 02:24:24,106 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-07-21 02:24:24,106 INFO  L276                IsEmpty]: Start isEmpty. Operand 10428 states and 15687 transitions.
[2020-07-21 02:24:24,123 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 334
[2020-07-21 02:24:24,123 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:24,124 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:24,336 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:24,337 INFO  L427      AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:24,337 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:24,337 INFO  L82        PathProgramCache]: Analyzing trace with hash 329818391, now seen corresponding path program 1 times
[2020-07-21 02:24:24,338 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:24,338 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348170373]
[2020-07-21 02:24:24,339 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:24,663 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:24:24,663 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:24,668 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:24:24,674 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:24,743 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 02:24:24,743 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:24,743 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348170373]
[2020-07-21 02:24:24,744 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:24,744 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:24:24,744 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054769331]
[2020-07-21 02:24:24,745 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:24:24,745 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:24,745 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:24:24,745 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:24,746 INFO  L87              Difference]: Start difference. First operand 10428 states and 15687 transitions. Second operand 3 states.
[2020-07-21 02:24:25,257 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:25,259 INFO  L93              Difference]: Finished difference Result 20342 states and 30558 transitions.
[2020-07-21 02:24:25,260 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:24:25,260 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 333
[2020-07-21 02:24:25,260 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:25,286 INFO  L225             Difference]: With dead ends: 20342
[2020-07-21 02:24:25,286 INFO  L226             Difference]: Without dead ends: 12484
[2020-07-21 02:24:25,435 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:25,450 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12484 states.
[2020-07-21 02:24:25,996 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12484 to 11130.
[2020-07-21 02:24:25,996 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11130 states.
[2020-07-21 02:24:26,011 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11130 states to 11130 states and 16845 transitions.
[2020-07-21 02:24:26,011 INFO  L78                 Accepts]: Start accepts. Automaton has 11130 states and 16845 transitions. Word has length 333
[2020-07-21 02:24:26,011 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:26,012 INFO  L479      AbstractCegarLoop]: Abstraction has 11130 states and 16845 transitions.
[2020-07-21 02:24:26,012 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:24:26,012 INFO  L276                IsEmpty]: Start isEmpty. Operand 11130 states and 16845 transitions.
[2020-07-21 02:24:26,027 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 334
[2020-07-21 02:24:26,027 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:26,028 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:26,241 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:26,242 INFO  L427      AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:26,243 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:26,243 INFO  L82        PathProgramCache]: Analyzing trace with hash -1493066537, now seen corresponding path program 1 times
[2020-07-21 02:24:26,243 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:26,244 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190912030]
[2020-07-21 02:24:26,244 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:26,501 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:24:26,502 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:26,505 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:24:26,510 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:26,579 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 02:24:26,579 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:26,579 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190912030]
[2020-07-21 02:24:26,579 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:26,580 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:24:26,580 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241896903]
[2020-07-21 02:24:26,580 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:24:26,581 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:26,581 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:24:26,581 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:26,581 INFO  L87              Difference]: Start difference. First operand 11130 states and 16845 transitions. Second operand 3 states.
[2020-07-21 02:24:27,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:27,883 INFO  L93              Difference]: Finished difference Result 32995 states and 49913 transitions.
[2020-07-21 02:24:27,884 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:24:27,884 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 333
[2020-07-21 02:24:27,884 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:27,919 INFO  L225             Difference]: With dead ends: 32995
[2020-07-21 02:24:27,919 INFO  L226             Difference]: Without dead ends: 22079
[2020-07-21 02:24:27,943 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:27,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22079 states.
[2020-07-21 02:24:28,503 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22079 to 11199.
[2020-07-21 02:24:28,503 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11199 states.
[2020-07-21 02:24:28,520 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11199 states to 11199 states and 16938 transitions.
[2020-07-21 02:24:28,521 INFO  L78                 Accepts]: Start accepts. Automaton has 11199 states and 16938 transitions. Word has length 333
[2020-07-21 02:24:28,521 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:28,521 INFO  L479      AbstractCegarLoop]: Abstraction has 11199 states and 16938 transitions.
[2020-07-21 02:24:28,521 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:24:28,521 INFO  L276                IsEmpty]: Start isEmpty. Operand 11199 states and 16938 transitions.
[2020-07-21 02:24:28,532 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 335
[2020-07-21 02:24:28,532 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:28,533 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:28,738 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:28,739 INFO  L427      AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:28,740 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:28,740 INFO  L82        PathProgramCache]: Analyzing trace with hash -490341952, now seen corresponding path program 1 times
[2020-07-21 02:24:28,740 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:28,741 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138788611]
[2020-07-21 02:24:28,741 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:29,098 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:24:29,098 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:29,102 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:24:29,112 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:29,179 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 02:24:29,179 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:29,179 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138788611]
[2020-07-21 02:24:29,180 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:29,180 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:24:29,180 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305344962]
[2020-07-21 02:24:29,181 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:24:29,181 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:29,181 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:24:29,181 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:29,182 INFO  L87              Difference]: Start difference. First operand 11199 states and 16938 transitions. Second operand 3 states.
[2020-07-21 02:24:30,557 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:30,558 INFO  L93              Difference]: Finished difference Result 33052 states and 49969 transitions.
[2020-07-21 02:24:30,558 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:24:30,558 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 334
[2020-07-21 02:24:30,559 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:30,586 INFO  L225             Difference]: With dead ends: 33052
[2020-07-21 02:24:30,587 INFO  L226             Difference]: Without dead ends: 22144
[2020-07-21 02:24:30,614 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:30,636 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22144 states.
[2020-07-21 02:24:31,335 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22144 to 11284.
[2020-07-21 02:24:31,335 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11284 states.
[2020-07-21 02:24:31,349 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 17037 transitions.
[2020-07-21 02:24:31,349 INFO  L78                 Accepts]: Start accepts. Automaton has 11284 states and 17037 transitions. Word has length 334
[2020-07-21 02:24:31,349 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:31,350 INFO  L479      AbstractCegarLoop]: Abstraction has 11284 states and 17037 transitions.
[2020-07-21 02:24:31,350 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:24:31,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 11284 states and 17037 transitions.
[2020-07-21 02:24:31,361 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 336
[2020-07-21 02:24:31,361 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:31,361 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:31,567 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:31,568 INFO  L427      AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:31,569 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:31,569 INFO  L82        PathProgramCache]: Analyzing trace with hash -1379273382, now seen corresponding path program 1 times
[2020-07-21 02:24:31,569 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:31,570 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139573077]
[2020-07-21 02:24:31,570 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:31,847 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:24:31,847 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:31,852 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-07-21 02:24:31,856 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:31,917 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 02:24:31,917 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:31,917 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139573077]
[2020-07-21 02:24:31,917 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:31,918 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 02:24:31,918 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240750065]
[2020-07-21 02:24:31,918 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 02:24:31,918 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:31,919 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 02:24:31,919 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 02:24:31,919 INFO  L87              Difference]: Start difference. First operand 11284 states and 17037 transitions. Second operand 4 states.
[2020-07-21 02:24:32,958 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:32,959 INFO  L93              Difference]: Finished difference Result 32331 states and 48589 transitions.
[2020-07-21 02:24:32,959 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-21 02:24:32,959 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 335
[2020-07-21 02:24:32,960 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:32,979 INFO  L225             Difference]: With dead ends: 32331
[2020-07-21 02:24:32,979 INFO  L226             Difference]: Without dead ends: 22191
[2020-07-21 02:24:32,992 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:24:33,011 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22191 states.
[2020-07-21 02:24:33,521 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22191 to 12311.
[2020-07-21 02:24:33,522 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12311 states.
[2020-07-21 02:24:33,537 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12311 states to 12311 states and 18687 transitions.
[2020-07-21 02:24:33,537 INFO  L78                 Accepts]: Start accepts. Automaton has 12311 states and 18687 transitions. Word has length 335
[2020-07-21 02:24:33,537 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:33,537 INFO  L479      AbstractCegarLoop]: Abstraction has 12311 states and 18687 transitions.
[2020-07-21 02:24:33,537 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 02:24:33,537 INFO  L276                IsEmpty]: Start isEmpty. Operand 12311 states and 18687 transitions.
[2020-07-21 02:24:33,550 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 336
[2020-07-21 02:24:33,550 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:33,550 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:33,750 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:33,751 INFO  L427      AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:33,751 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:33,752 INFO  L82        PathProgramCache]: Analyzing trace with hash 253581998, now seen corresponding path program 1 times
[2020-07-21 02:24:33,752 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:33,752 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455211876]
[2020-07-21 02:24:33,753 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:34,021 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:24:34,022 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:34,025 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-21 02:24:34,029 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:34,100 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 02:24:34,100 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:34,101 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455211876]
[2020-07-21 02:24:34,101 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:34,101 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 02:24:34,101 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354000134]
[2020-07-21 02:24:34,102 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 02:24:34,102 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:34,102 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 02:24:34,102 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 02:24:34,103 INFO  L87              Difference]: Start difference. First operand 12311 states and 18687 transitions. Second operand 4 states.
[2020-07-21 02:24:35,051 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:35,052 INFO  L93              Difference]: Finished difference Result 26310 states and 39707 transitions.
[2020-07-21 02:24:35,052 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-21 02:24:35,052 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 335
[2020-07-21 02:24:35,053 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:35,071 INFO  L225             Difference]: With dead ends: 26310
[2020-07-21 02:24:35,071 INFO  L226             Difference]: Without dead ends: 13892
[2020-07-21 02:24:35,082 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:24:35,095 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13892 states.
[2020-07-21 02:24:35,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13892 to 13768.
[2020-07-21 02:24:35,662 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 13768 states.
[2020-07-21 02:24:35,680 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13768 states to 13768 states and 20680 transitions.
[2020-07-21 02:24:35,680 INFO  L78                 Accepts]: Start accepts. Automaton has 13768 states and 20680 transitions. Word has length 335
[2020-07-21 02:24:35,681 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:35,681 INFO  L479      AbstractCegarLoop]: Abstraction has 13768 states and 20680 transitions.
[2020-07-21 02:24:35,681 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 02:24:35,681 INFO  L276                IsEmpty]: Start isEmpty. Operand 13768 states and 20680 transitions.
[2020-07-21 02:24:35,691 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 336
[2020-07-21 02:24:35,691 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:35,692 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:35,892 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:35,893 INFO  L427      AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:35,893 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:35,894 INFO  L82        PathProgramCache]: Analyzing trace with hash -1042982806, now seen corresponding path program 1 times
[2020-07-21 02:24:35,894 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:35,895 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021311653]
[2020-07-21 02:24:35,895 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:36,200 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:24:36,200 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:36,205 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1599 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:24:36,210 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:36,278 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 02:24:36,278 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:36,278 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021311653]
[2020-07-21 02:24:36,279 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:36,279 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:24:36,279 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211629671]
[2020-07-21 02:24:36,280 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:24:36,280 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:36,280 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:24:36,280 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:36,280 INFO  L87              Difference]: Start difference. First operand 13768 states and 20680 transitions. Second operand 3 states.
[2020-07-21 02:24:37,524 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:37,525 INFO  L93              Difference]: Finished difference Result 26942 states and 40621 transitions.
[2020-07-21 02:24:37,525 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:24:37,525 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 335
[2020-07-21 02:24:37,526 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:37,544 INFO  L225             Difference]: With dead ends: 26942
[2020-07-21 02:24:37,544 INFO  L226             Difference]: Without dead ends: 18440
[2020-07-21 02:24:37,555 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:37,568 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18440 states.
[2020-07-21 02:24:38,251 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18440 to 16348.
[2020-07-21 02:24:38,251 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16348 states.
[2020-07-21 02:24:38,273 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16348 states to 16348 states and 24748 transitions.
[2020-07-21 02:24:38,273 INFO  L78                 Accepts]: Start accepts. Automaton has 16348 states and 24748 transitions. Word has length 335
[2020-07-21 02:24:38,273 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:38,273 INFO  L479      AbstractCegarLoop]: Abstraction has 16348 states and 24748 transitions.
[2020-07-21 02:24:38,273 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:24:38,273 INFO  L276                IsEmpty]: Start isEmpty. Operand 16348 states and 24748 transitions.
[2020-07-21 02:24:38,284 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 336
[2020-07-21 02:24:38,284 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:38,284 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:38,484 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:38,485 INFO  L427      AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:38,486 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:38,486 INFO  L82        PathProgramCache]: Analyzing trace with hash 974019521, now seen corresponding path program 1 times
[2020-07-21 02:24:38,487 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:38,487 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008001941]
[2020-07-21 02:24:38,488 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:38,815 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:24:38,815 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:38,819 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:24:38,824 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:39,049 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 02:24:39,049 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:39,050 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008001941]
[2020-07-21 02:24:39,050 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:39,050 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:24:39,050 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683002585]
[2020-07-21 02:24:39,051 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:24:39,051 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:39,051 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:24:39,051 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:39,052 INFO  L87              Difference]: Start difference. First operand 16348 states and 24748 transitions. Second operand 3 states.
[2020-07-21 02:24:40,377 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:40,378 INFO  L93              Difference]: Finished difference Result 44346 states and 66764 transitions.
[2020-07-21 02:24:40,378 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:24:40,378 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 335
[2020-07-21 02:24:40,379 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:40,414 INFO  L225             Difference]: With dead ends: 44346
[2020-07-21 02:24:40,415 INFO  L226             Difference]: Without dead ends: 30520
[2020-07-21 02:24:40,442 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:40,471 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30520 states.
[2020-07-21 02:24:41,963 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30520 to 30423.
[2020-07-21 02:24:41,964 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30423 states.
[2020-07-21 02:24:42,003 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 45687 transitions.
[2020-07-21 02:24:42,003 INFO  L78                 Accepts]: Start accepts. Automaton has 30423 states and 45687 transitions. Word has length 335
[2020-07-21 02:24:42,004 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:42,004 INFO  L479      AbstractCegarLoop]: Abstraction has 30423 states and 45687 transitions.
[2020-07-21 02:24:42,004 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:24:42,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 30423 states and 45687 transitions.
[2020-07-21 02:24:42,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 337
[2020-07-21 02:24:42,023 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:42,023 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:42,237 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:42,238 INFO  L427      AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:42,238 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:42,239 INFO  L82        PathProgramCache]: Analyzing trace with hash 399736853, now seen corresponding path program 1 times
[2020-07-21 02:24:42,239 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:42,239 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182687848]
[2020-07-21 02:24:42,240 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:42,556 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:24:42,556 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:42,561 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-21 02:24:42,566 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:42,707 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 02:24:42,707 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:42,711 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182687848]
[2020-07-21 02:24:42,718 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:42,719 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-21 02:24:42,721 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297944130]
[2020-07-21 02:24:42,722 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-21 02:24:42,722 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:42,722 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-21 02:24:42,722 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:24:42,723 INFO  L87              Difference]: Start difference. First operand 30423 states and 45687 transitions. Second operand 5 states.
[2020-07-21 02:24:45,039 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:45,039 INFO  L93              Difference]: Finished difference Result 52787 states and 79246 transitions.
[2020-07-21 02:24:45,039 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-07-21 02:24:45,039 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 336
[2020-07-21 02:24:45,040 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:45,073 INFO  L225             Difference]: With dead ends: 52787
[2020-07-21 02:24:45,073 INFO  L226             Difference]: Without dead ends: 30423
[2020-07-21 02:24:45,102 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2020-07-21 02:24:45,127 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30423 states.
[2020-07-21 02:24:47,617 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30423 to 30423.
[2020-07-21 02:24:47,617 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30423 states.
[2020-07-21 02:24:47,654 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 45357 transitions.
[2020-07-21 02:24:47,654 INFO  L78                 Accepts]: Start accepts. Automaton has 30423 states and 45357 transitions. Word has length 336
[2020-07-21 02:24:47,654 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:47,655 INFO  L479      AbstractCegarLoop]: Abstraction has 30423 states and 45357 transitions.
[2020-07-21 02:24:47,655 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-21 02:24:47,655 INFO  L276                IsEmpty]: Start isEmpty. Operand 30423 states and 45357 transitions.
[2020-07-21 02:24:47,676 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 337
[2020-07-21 02:24:47,676 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:47,677 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:47,889 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:47,890 INFO  L427      AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:47,890 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:47,891 INFO  L82        PathProgramCache]: Analyzing trace with hash -47782950, now seen corresponding path program 1 times
[2020-07-21 02:24:47,891 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:47,892 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238484638]
[2020-07-21 02:24:47,892 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:48,217 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:24:48,217 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:48,221 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-21 02:24:48,226 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:48,328 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 02:24:48,328 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:48,329 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238484638]
[2020-07-21 02:24:48,329 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:48,329 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 02:24:48,329 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649310982]
[2020-07-21 02:24:48,330 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 02:24:48,330 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:48,330 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 02:24:48,330 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 02:24:48,330 INFO  L87              Difference]: Start difference. First operand 30423 states and 45357 transitions. Second operand 4 states.
[2020-07-21 02:24:51,432 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:24:51,432 INFO  L93              Difference]: Finished difference Result 87733 states and 130661 transitions.
[2020-07-21 02:24:51,433 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-21 02:24:51,433 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 336
[2020-07-21 02:24:51,433 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:24:51,499 INFO  L225             Difference]: With dead ends: 87733
[2020-07-21 02:24:51,499 INFO  L226             Difference]: Without dead ends: 57856
[2020-07-21 02:24:51,528 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:24:51,570 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57856 states.
[2020-07-21 02:24:54,645 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57856 to 57782.
[2020-07-21 02:24:54,646 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 57782 states.
[2020-07-21 02:24:54,733 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57782 states to 57782 states and 85564 transitions.
[2020-07-21 02:24:54,734 INFO  L78                 Accepts]: Start accepts. Automaton has 57782 states and 85564 transitions. Word has length 336
[2020-07-21 02:24:54,734 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:24:54,734 INFO  L479      AbstractCegarLoop]: Abstraction has 57782 states and 85564 transitions.
[2020-07-21 02:24:54,734 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 02:24:54,734 INFO  L276                IsEmpty]: Start isEmpty. Operand 57782 states and 85564 transitions.
[2020-07-21 02:24:54,768 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 338
[2020-07-21 02:24:54,769 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:24:54,769 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:24:54,969 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:54,970 INFO  L427      AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:24:54,971 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:24:54,971 INFO  L82        PathProgramCache]: Analyzing trace with hash -1580338063, now seen corresponding path program 1 times
[2020-07-21 02:24:54,972 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:24:54,972 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343500697]
[2020-07-21 02:24:54,972 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:24:55,244 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:24:55,244 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:24:55,248 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:24:55,252 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:24:55,300 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 02:24:55,301 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:24:55,301 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343500697]
[2020-07-21 02:24:55,301 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:24:55,301 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:24:55,301 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846943349]
[2020-07-21 02:24:55,302 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:24:55,302 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:24:55,302 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:24:55,302 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:24:55,302 INFO  L87              Difference]: Start difference. First operand 57782 states and 85564 transitions. Second operand 3 states.
[2020-07-21 02:25:01,741 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:25:01,742 INFO  L93              Difference]: Finished difference Result 161867 states and 238616 transitions.
[2020-07-21 02:25:01,742 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:25:01,742 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 337
[2020-07-21 02:25:01,742 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:25:01,866 INFO  L225             Difference]: With dead ends: 161867
[2020-07-21 02:25:01,866 INFO  L226             Difference]: Without dead ends: 109465
[2020-07-21 02:25:01,917 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:25:01,992 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 109465 states.
[2020-07-21 02:25:07,407 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 109465 to 58485.
[2020-07-21 02:25:07,407 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 58485 states.
[2020-07-21 02:25:07,482 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58485 states to 58485 states and 86331 transitions.
[2020-07-21 02:25:07,482 INFO  L78                 Accepts]: Start accepts. Automaton has 58485 states and 86331 transitions. Word has length 337
[2020-07-21 02:25:07,483 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:25:07,483 INFO  L479      AbstractCegarLoop]: Abstraction has 58485 states and 86331 transitions.
[2020-07-21 02:25:07,483 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:25:07,483 INFO  L276                IsEmpty]: Start isEmpty. Operand 58485 states and 86331 transitions.
[2020-07-21 02:25:07,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 339
[2020-07-21 02:25:07,516 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:25:07,517 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:25:07,717 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:25:07,718 INFO  L427      AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:25:07,718 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:25:07,718 INFO  L82        PathProgramCache]: Analyzing trace with hash -510440838, now seen corresponding path program 1 times
[2020-07-21 02:25:07,719 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:25:07,719 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803851266]
[2020-07-21 02:25:07,719 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:25:08,031 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:25:08,031 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:25:08,036 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:25:08,041 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:25:08,150 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 02:25:08,150 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:25:08,150 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803851266]
[2020-07-21 02:25:08,151 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:25:08,151 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:25:08,151 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337157030]
[2020-07-21 02:25:08,152 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:25:08,152 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:25:08,152 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:25:08,152 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:25:08,153 INFO  L87              Difference]: Start difference. First operand 58485 states and 86331 transitions. Second operand 3 states.
[2020-07-21 02:25:14,365 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:25:14,365 INFO  L93              Difference]: Finished difference Result 166433 states and 244929 transitions.
[2020-07-21 02:25:14,366 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:25:14,366 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 338
[2020-07-21 02:25:14,366 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:25:14,498 INFO  L225             Difference]: With dead ends: 166433
[2020-07-21 02:25:14,498 INFO  L226             Difference]: Without dead ends: 113274
[2020-07-21 02:25:14,547 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:25:14,624 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 113274 states.
[2020-07-21 02:25:23,459 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 113274 to 113187.
[2020-07-21 02:25:23,460 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 113187 states.
[2020-07-21 02:25:23,629 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 113187 states to 113187 states and 165631 transitions.
[2020-07-21 02:25:23,630 INFO  L78                 Accepts]: Start accepts. Automaton has 113187 states and 165631 transitions. Word has length 338
[2020-07-21 02:25:23,630 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:25:23,630 INFO  L479      AbstractCegarLoop]: Abstraction has 113187 states and 165631 transitions.
[2020-07-21 02:25:23,630 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:25:23,630 INFO  L276                IsEmpty]: Start isEmpty. Operand 113187 states and 165631 transitions.
[2020-07-21 02:25:23,698 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 340
[2020-07-21 02:25:23,698 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:25:23,698 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:25:23,899 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:25:23,899 INFO  L427      AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:25:23,900 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:25:23,900 INFO  L82        PathProgramCache]: Analyzing trace with hash -1049649648, now seen corresponding path program 1 times
[2020-07-21 02:25:23,900 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:25:23,901 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344123015]
[2020-07-21 02:25:23,901 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:25:24,177 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:25:24,178 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:25:24,181 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-07-21 02:25:24,185 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:25:24,249 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 02:25:24,250 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:25:24,250 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344123015]
[2020-07-21 02:25:24,250 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:25:24,250 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 02:25:24,250 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784950222]
[2020-07-21 02:25:24,251 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 02:25:24,251 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:25:24,251 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 02:25:24,251 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 02:25:24,252 INFO  L87              Difference]: Start difference. First operand 113187 states and 165631 transitions. Second operand 4 states.
[2020-07-21 02:25:32,931 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:25:32,931 INFO  L93              Difference]: Finished difference Result 213623 states and 312069 transitions.
[2020-07-21 02:25:32,932 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-21 02:25:32,932 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 339
[2020-07-21 02:25:32,932 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:25:33,061 INFO  L225             Difference]: With dead ends: 213623
[2020-07-21 02:25:33,062 INFO  L226             Difference]: Without dead ends: 108923
[2020-07-21 02:25:33,136 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:25:33,211 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 108923 states.
[2020-07-21 02:25:39,856 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 108923 to 108231.
[2020-07-21 02:25:39,856 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 108231 states.
[2020-07-21 02:25:40,001 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 108231 states to 108231 states and 158511 transitions.
[2020-07-21 02:25:40,002 INFO  L78                 Accepts]: Start accepts. Automaton has 108231 states and 158511 transitions. Word has length 339
[2020-07-21 02:25:40,002 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:25:40,002 INFO  L479      AbstractCegarLoop]: Abstraction has 108231 states and 158511 transitions.
[2020-07-21 02:25:40,002 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 02:25:40,002 INFO  L276                IsEmpty]: Start isEmpty. Operand 108231 states and 158511 transitions.
[2020-07-21 02:25:40,059 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 341
[2020-07-21 02:25:40,059 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:25:40,059 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:25:40,260 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:25:40,260 INFO  L427      AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:25:40,261 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:25:40,261 INFO  L82        PathProgramCache]: Analyzing trace with hash 1984758997, now seen corresponding path program 1 times
[2020-07-21 02:25:40,262 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:25:40,262 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100900129]
[2020-07-21 02:25:40,263 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:25:40,518 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:25:40,518 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:25:40,522 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-21 02:25:40,527 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:25:40,600 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 02:25:40,601 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:25:40,601 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100900129]
[2020-07-21 02:25:40,601 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:25:40,601 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 02:25:40,601 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957586819]
[2020-07-21 02:25:40,602 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 02:25:40,602 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:25:40,602 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 02:25:40,602 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 02:25:40,602 INFO  L87              Difference]: Start difference. First operand 108231 states and 158511 transitions. Second operand 4 states.
[2020-07-21 02:25:50,159 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:25:50,159 INFO  L93              Difference]: Finished difference Result 232107 states and 338799 transitions.
[2020-07-21 02:25:50,161 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-21 02:25:50,161 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 340
[2020-07-21 02:25:50,161 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:25:50,300 INFO  L225             Difference]: With dead ends: 232107
[2020-07-21 02:25:50,300 INFO  L226             Difference]: Without dead ends: 117880
[2020-07-21 02:25:50,375 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:25:50,457 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 117880 states.
[2020-07-21 02:25:57,457 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 117880 to 117634.
[2020-07-21 02:25:57,457 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 117634 states.
[2020-07-21 02:25:57,636 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 117634 states to 117634 states and 170846 transitions.
[2020-07-21 02:25:57,636 INFO  L78                 Accepts]: Start accepts. Automaton has 117634 states and 170846 transitions. Word has length 340
[2020-07-21 02:25:57,637 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:25:57,637 INFO  L479      AbstractCegarLoop]: Abstraction has 117634 states and 170846 transitions.
[2020-07-21 02:25:57,637 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 02:25:57,637 INFO  L276                IsEmpty]: Start isEmpty. Operand 117634 states and 170846 transitions.
[2020-07-21 02:25:57,707 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 342
[2020-07-21 02:25:57,708 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:25:57,708 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:25:57,908 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:25:57,909 INFO  L427      AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:25:57,909 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:25:57,910 INFO  L82        PathProgramCache]: Analyzing trace with hash -1221603206, now seen corresponding path program 1 times
[2020-07-21 02:25:57,910 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:25:57,910 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604487820]
[2020-07-21 02:25:57,911 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:25:58,219 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:25:58,219 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:25:58,223 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:25:58,227 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:25:58,323 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 02:25:58,323 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:25:58,323 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604487820]
[2020-07-21 02:25:58,323 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:25:58,323 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:25:58,324 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889832504]
[2020-07-21 02:25:58,324 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:25:58,324 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:25:58,325 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:25:58,325 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:25:58,325 INFO  L87              Difference]: Start difference. First operand 117634 states and 170846 transitions. Second operand 3 states.
[2020-07-21 02:26:13,772 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:26:13,773 INFO  L93              Difference]: Finished difference Result 320447 states and 462661 transitions.
[2020-07-21 02:26:13,773 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:26:13,774 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 341
[2020-07-21 02:26:13,774 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:26:14,095 INFO  L225             Difference]: With dead ends: 320447
[2020-07-21 02:26:14,095 INFO  L226             Difference]: Without dead ends: 220871
[2020-07-21 02:26:14,186 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:26:14,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 220871 states.
[2020-07-21 02:26:33,420 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 220871 to 220215.
[2020-07-21 02:26:33,421 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 220215 states.
[2020-07-21 02:26:33,772 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 220215 states to 220215 states and 317611 transitions.
[2020-07-21 02:26:33,773 INFO  L78                 Accepts]: Start accepts. Automaton has 220215 states and 317611 transitions. Word has length 341
[2020-07-21 02:26:33,773 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:26:33,773 INFO  L479      AbstractCegarLoop]: Abstraction has 220215 states and 317611 transitions.
[2020-07-21 02:26:33,773 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:26:33,773 INFO  L276                IsEmpty]: Start isEmpty. Operand 220215 states and 317611 transitions.
[2020-07-21 02:26:33,904 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 343
[2020-07-21 02:26:33,904 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:26:33,904 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:26:34,105 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:26:34,106 INFO  L427      AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:26:34,106 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:26:34,106 INFO  L82        PathProgramCache]: Analyzing trace with hash 1742808744, now seen corresponding path program 1 times
[2020-07-21 02:26:34,107 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:26:34,107 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585896313]
[2020-07-21 02:26:34,108 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:26:34,379 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:26:34,380 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:26:34,383 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:26:34,387 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:26:34,465 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 02:26:34,465 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:26:34,465 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585896313]
[2020-07-21 02:26:34,465 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:26:34,465 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:26:34,466 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312700111]
[2020-07-21 02:26:34,466 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:26:34,466 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:26:34,466 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:26:34,467 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:26:34,467 INFO  L87              Difference]: Start difference. First operand 220215 states and 317611 transitions. Second operand 3 states.
[2020-07-21 02:27:00,284 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:27:00,285 INFO  L93              Difference]: Finished difference Result 569705 states and 820667 transitions.
[2020-07-21 02:27:00,285 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:27:00,285 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 342
[2020-07-21 02:27:00,286 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:27:00,838 INFO  L225             Difference]: With dead ends: 569705
[2020-07-21 02:27:00,838 INFO  L226             Difference]: Without dead ends: 364313
[2020-07-21 02:27:01,023 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:27:01,317 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 364313 states.
[2020-07-21 02:27:23,748 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 364313 to 220476.
[2020-07-21 02:27:23,748 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 220476 states.
[2020-07-21 02:27:24,416 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 220476 states to 220476 states and 317474 transitions.
[2020-07-21 02:27:24,417 INFO  L78                 Accepts]: Start accepts. Automaton has 220476 states and 317474 transitions. Word has length 342
[2020-07-21 02:27:24,417 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:27:24,417 INFO  L479      AbstractCegarLoop]: Abstraction has 220476 states and 317474 transitions.
[2020-07-21 02:27:24,417 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:27:24,418 INFO  L276                IsEmpty]: Start isEmpty. Operand 220476 states and 317474 transitions.
[2020-07-21 02:27:24,572 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 344
[2020-07-21 02:27:24,572 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:27:24,572 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:27:24,773 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:27:24,773 INFO  L427      AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:27:24,774 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:27:24,774 INFO  L82        PathProgramCache]: Analyzing trace with hash -2089231950, now seen corresponding path program 1 times
[2020-07-21 02:27:24,775 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:27:24,777 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011450094]
[2020-07-21 02:27:24,777 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:27:25,049 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:27:25,049 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:27:25,053 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:27:25,056 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:27:25,114 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 02:27:25,114 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:27:25,114 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011450094]
[2020-07-21 02:27:25,115 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:27:25,115 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:27:25,115 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719364092]
[2020-07-21 02:27:25,115 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:27:25,116 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:27:25,116 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:27:25,116 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:27:25,116 INFO  L87              Difference]: Start difference. First operand 220476 states and 317474 transitions. Second operand 3 states.
[2020-07-21 02:27:47,237 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:27:47,238 INFO  L93              Difference]: Finished difference Result 383772 states and 552579 transitions.
[2020-07-21 02:27:47,238 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:27:47,238 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 343
[2020-07-21 02:27:47,239 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:27:47,586 INFO  L225             Difference]: With dead ends: 383772
[2020-07-21 02:27:47,586 INFO  L226             Difference]: Without dead ends: 299708
[2020-07-21 02:27:47,681 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:27:47,913 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 299708 states.
[2020-07-21 02:28:10,696 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 299708 to 220476.
[2020-07-21 02:28:10,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 220476 states.
[2020-07-21 02:28:11,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 220476 states to 220476 states and 317438 transitions.
[2020-07-21 02:28:11,021 INFO  L78                 Accepts]: Start accepts. Automaton has 220476 states and 317438 transitions. Word has length 343
[2020-07-21 02:28:11,021 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:28:11,021 INFO  L479      AbstractCegarLoop]: Abstraction has 220476 states and 317438 transitions.
[2020-07-21 02:28:11,021 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:28:11,021 INFO  L276                IsEmpty]: Start isEmpty. Operand 220476 states and 317438 transitions.
[2020-07-21 02:28:11,149 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 344
[2020-07-21 02:28:11,150 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:28:11,150 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:28:11,358 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:28:11,359 INFO  L427      AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:28:11,359 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:28:11,360 INFO  L82        PathProgramCache]: Analyzing trace with hash -49337893, now seen corresponding path program 1 times
[2020-07-21 02:28:11,360 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:28:11,360 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299081755]
[2020-07-21 02:28:11,361 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:28:11,636 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:28:11,637 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:28:11,640 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-07-21 02:28:11,644 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:28:11,704 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 02:28:11,705 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:28:11,705 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299081755]
[2020-07-21 02:28:11,705 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:28:11,705 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 02:28:11,705 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042228216]
[2020-07-21 02:28:11,706 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 02:28:11,706 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:28:11,706 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 02:28:11,706 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 02:28:11,707 INFO  L87              Difference]: Start difference. First operand 220476 states and 317438 transitions. Second operand 4 states.
[2020-07-21 02:28:35,282 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:28:35,283 INFO  L93              Difference]: Finished difference Result 503958 states and 724537 transitions.
[2020-07-21 02:28:35,283 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-21 02:28:35,283 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 343
[2020-07-21 02:28:35,283 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:28:35,719 INFO  L225             Difference]: With dead ends: 503958
[2020-07-21 02:28:35,719 INFO  L226             Difference]: Without dead ends: 334373
[2020-07-21 02:28:35,880 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:28:36,141 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 334373 states.
[2020-07-21 02:28:58,891 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 334373 to 221824.
[2020-07-21 02:28:58,892 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 221824 states.
[2020-07-21 02:28:59,212 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 221824 states to 221824 states and 319692 transitions.
[2020-07-21 02:28:59,213 INFO  L78                 Accepts]: Start accepts. Automaton has 221824 states and 319692 transitions. Word has length 343
[2020-07-21 02:28:59,213 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:28:59,213 INFO  L479      AbstractCegarLoop]: Abstraction has 221824 states and 319692 transitions.
[2020-07-21 02:28:59,213 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 02:28:59,213 INFO  L276                IsEmpty]: Start isEmpty. Operand 221824 states and 319692 transitions.
[2020-07-21 02:28:59,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 345
[2020-07-21 02:28:59,339 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:28:59,339 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:28:59,539 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:28:59,540 INFO  L427      AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:28:59,540 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:28:59,541 INFO  L82        PathProgramCache]: Analyzing trace with hash 271766215, now seen corresponding path program 1 times
[2020-07-21 02:28:59,541 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:28:59,541 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770822181]
[2020-07-21 02:28:59,542 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:28:59,853 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:28:59,853 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:28:59,857 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 2 conjunts are in the unsatisfiable core
[2020-07-21 02:28:59,861 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:28:59,942 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 02:28:59,942 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:28:59,942 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770822181]
[2020-07-21 02:28:59,942 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:28:59,942 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-21 02:28:59,942 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095244401]
[2020-07-21 02:28:59,943 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-21 02:28:59,943 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:28:59,943 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-21 02:28:59,943 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:28:59,943 INFO  L87              Difference]: Start difference. First operand 221824 states and 319692 transitions. Second operand 3 states.
[2020-07-21 02:29:36,434 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:29:36,435 INFO  L93              Difference]: Finished difference Result 611011 states and 878999 transitions.
[2020-07-21 02:29:36,435 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-21 02:29:36,435 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 344
[2020-07-21 02:29:36,436 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:29:37,073 INFO  L225             Difference]: With dead ends: 611011
[2020-07-21 02:29:37,073 INFO  L226             Difference]: Without dead ends: 419759
[2020-07-21 02:29:37,300 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-21 02:29:37,652 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 419759 states.
[2020-07-21 02:30:16,095 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 419759 to 419701.
[2020-07-21 02:30:16,095 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 419701 states.
[2020-07-21 02:30:16,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 419701 states to 419701 states and 600225 transitions.
[2020-07-21 02:30:16,752 INFO  L78                 Accepts]: Start accepts. Automaton has 419701 states and 600225 transitions. Word has length 344
[2020-07-21 02:30:16,752 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:30:16,752 INFO  L479      AbstractCegarLoop]: Abstraction has 419701 states and 600225 transitions.
[2020-07-21 02:30:16,752 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-21 02:30:16,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 419701 states and 600225 transitions.
[2020-07-21 02:30:17,010 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 346
[2020-07-21 02:30:17,010 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:30:17,011 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:30:17,223 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:30:17,224 INFO  L427      AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:30:17,224 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:30:17,225 INFO  L82        PathProgramCache]: Analyzing trace with hash -617353460, now seen corresponding path program 1 times
[2020-07-21 02:30:17,225 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:30:17,226 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107915334]
[2020-07-21 02:30:17,226 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:30:17,559 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 02:30:17,560 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:30:17,565 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-21 02:30:17,569 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:30:17,667 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 02:30:17,667 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:30:17,667 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107915334]
[2020-07-21 02:30:17,667 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:30:17,667 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 02:30:17,667 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947798687]
[2020-07-21 02:30:17,668 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 02:30:17,668 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:30:17,668 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 02:30:17,668 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 02:30:17,668 INFO  L87              Difference]: Start difference. First operand 419701 states and 600225 transitions. Second operand 4 states.
[2020-07-21 02:31:24,644 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:31:24,644 INFO  L93              Difference]: Finished difference Result 1220561 states and 1741343 transitions.
[2020-07-21 02:31:24,645 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-21 02:31:24,645 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 345
[2020-07-21 02:31:24,645 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:31:25,884 INFO  L225             Difference]: With dead ends: 1220561
[2020-07-21 02:31:25,884 INFO  L226             Difference]: Without dead ends: 803049
[2020-07-21 02:31:26,268 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:31:26,900 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 803049 states.
[2020-07-21 02:32:48,334 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 803049 to 802363.
[2020-07-21 02:32:48,334 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 802363 states.
[2020-07-21 02:32:50,097 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 802363 states to 802363 states and 1136664 transitions.
[2020-07-21 02:32:50,097 INFO  L78                 Accepts]: Start accepts. Automaton has 802363 states and 1136664 transitions. Word has length 345
[2020-07-21 02:32:50,097 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 02:32:50,097 INFO  L479      AbstractCegarLoop]: Abstraction has 802363 states and 1136664 transitions.
[2020-07-21 02:32:50,097 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 02:32:50,097 INFO  L276                IsEmpty]: Start isEmpty. Operand 802363 states and 1136664 transitions.
[2020-07-21 02:32:50,611 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 346
[2020-07-21 02:32:50,611 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 02:32:50,611 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 02:32:50,812 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:32:50,812 INFO  L427      AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 02:32:50,813 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 02:32:50,813 INFO  L82        PathProgramCache]: Analyzing trace with hash -286694571, now seen corresponding path program 1 times
[2020-07-21 02:32:50,814 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 02:32:50,814 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273943538]
[2020-07-21 02:32:50,815 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 02:32:51,091 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s)
[2020-07-21 02:32:51,092 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 02:32:51,096 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 5 conjunts are in the unsatisfiable core
[2020-07-21 02:32:51,100 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 02:32:51,182 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 02:32:51,183 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 02:32:51,183 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273943538]
[2020-07-21 02:32:51,183 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 02:32:51,183 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 02:32:51,184 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375709141]
[2020-07-21 02:32:51,184 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 02:32:51,185 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 02:32:51,185 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 02:32:51,185 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-07-21 02:32:51,185 INFO  L87              Difference]: Start difference. First operand 802363 states and 1136664 transitions. Second operand 4 states.
[2020-07-21 02:35:17,546 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 02:35:17,547 INFO  L93              Difference]: Finished difference Result 2342064 states and 3314092 transitions.
[2020-07-21 02:35:17,547 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-21 02:35:17,547 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 345
[2020-07-21 02:35:17,548 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 02:35:21,137 INFO  L225             Difference]: With dead ends: 2342064
[2020-07-21 02:35:21,137 INFO  L226             Difference]: Without dead ends: 1588546
[2020-07-21 02:35:21,845 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-07-21 02:35:23,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1588546 states.