/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 15:10:01,348 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 15:10:01,352 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 15:10:01,397 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 15:10:01,397 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 15:10:01,407 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 15:10:01,409 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 15:10:01,413 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 15:10:01,416 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 15:10:01,419 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 15:10:01,420 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 15:10:01,421 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 15:10:01,421 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 15:10:01,424 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 15:10:01,427 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 15:10:01,429 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 15:10:01,431 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 15:10:01,432 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 15:10:01,434 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 15:10:01,443 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 15:10:01,446 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 15:10:01,447 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 15:10:01,448 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 15:10:01,449 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 15:10:01,462 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 15:10:01,462 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 15:10:01,462 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 15:10:01,469 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 15:10:01,469 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 15:10:01,474 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 15:10:01,474 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 15:10:01,475 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 15:10:01,479 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 15:10:01,480 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 15:10:01,481 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 15:10:01,481 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 15:10:01,482 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 15:10:01,482 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 15:10:01,482 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 15:10:01,484 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 15:10:01,484 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 15:10:01,486 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 15:10:01,528 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 15:10:01,528 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 15:10:01,529 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 15:10:01,530 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 15:10:01,530 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 15:10:01,530 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 15:10:01,530 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 15:10:01,531 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 15:10:01,531 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 15:10:01,531 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 15:10:01,531 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 15:10:01,531 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 15:10:01,532 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 15:10:01,532 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 15:10:01,532 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 15:10:01,532 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 15:10:01,532 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 15:10:01,533 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 15:10:01,533 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 15:10:01,533 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 15:10:01,533 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 15:10:01,534 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 15:10:01,534 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 15:10:01,534 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 15:10:01,534 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 15:10:01,534 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 15:10:01,535 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 15:10:01,535 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 15:10:01,535 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 15:10:01,535 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 -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false
[2020-09-24 15:10:02,028 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 15:10:02,045 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 15:10:02,049 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 15:10:02,050 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 15:10:02,051 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 15:10:02,052 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c
[2020-09-24 15:10:02,148 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ad80f2fa/56644d12c4884d8e890d3ed06dfe1c21/FLAG4b321943e
[2020-09-24 15:10:02,758 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 15:10:02,759 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c
[2020-09-24 15:10:02,775 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ad80f2fa/56644d12c4884d8e890d3ed06dfe1c21/FLAG4b321943e
[2020-09-24 15:10:03,047 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ad80f2fa/56644d12c4884d8e890d3ed06dfe1c21
[2020-09-24 15:10:03,061 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 15:10:03,066 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 15:10:03,069 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 15:10:03,069 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 15:10:03,073 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 15:10:03,074 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:03" (1/1) ...
[2020-09-24 15:10:03,080 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:03, skipping insertion in model container
[2020-09-24 15:10:03,080 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:10:03" (1/1) ...
[2020-09-24 15:10:03,091 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 15:10:03,167 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 15:10:03,600 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:10:03,618 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 15:10:03,710 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:10:03,734 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 15:10:03,734 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:03 WrapperNode
[2020-09-24 15:10:03,734 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 15:10:03,735 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 15:10:03,735 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 15:10:03,736 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 15:10:03,750 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:03" (1/1) ...
[2020-09-24 15:10:03,750 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:03" (1/1) ...
[2020-09-24 15:10:03,767 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:03" (1/1) ...
[2020-09-24 15:10:03,767 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:03" (1/1) ...
[2020-09-24 15:10:03,788 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:03" (1/1) ...
[2020-09-24 15:10:03,803 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:03" (1/1) ...
[2020-09-24 15:10:03,808 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:03" (1/1) ...
[2020-09-24 15:10:03,815 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 15:10:03,816 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 15:10:03,816 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 15:10:03,816 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 15:10:03,818 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:03" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-09-24 15:10:03,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 15:10:03,912 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 15:10:03,913 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 15:10:03,913 INFO  L138     BoogieDeclarations]: Found implementation of procedure write_side1_failed_history
[2020-09-24 15:10:03,913 INFO  L138     BoogieDeclarations]: Found implementation of procedure read_side1_failed_history
[2020-09-24 15:10:03,913 INFO  L138     BoogieDeclarations]: Found implementation of procedure write_side2_failed_history
[2020-09-24 15:10:03,913 INFO  L138     BoogieDeclarations]: Found implementation of procedure read_side2_failed_history
[2020-09-24 15:10:03,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure write_active_side_history
[2020-09-24 15:10:03,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure read_active_side_history
[2020-09-24 15:10:03,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure write_manual_selection_history
[2020-09-24 15:10:03,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure read_manual_selection_history
[2020-09-24 15:10:03,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2020-09-24 15:10:03,915 INFO  L138     BoogieDeclarations]: Found implementation of procedure flip_the_side
[2020-09-24 15:10:03,915 INFO  L138     BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period
[2020-09-24 15:10:03,915 INFO  L138     BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period
[2020-09-24 15:10:03,915 INFO  L138     BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period
[2020-09-24 15:10:03,915 INFO  L138     BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period
[2020-09-24 15:10:03,916 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2020-09-24 15:10:03,916 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 15:10:03,916 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2020-09-24 15:10:03,917 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 15:10:03,917 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2020-09-24 15:10:03,917 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-24 15:10:03,917 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-09-24 15:10:03,917 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2020-09-24 15:10:03,917 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2020-09-24 15:10:03,918 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 15:10:03,918 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 15:10:03,918 INFO  L130     BoogieDeclarations]: Found specification of procedure write_side1_failed_history
[2020-09-24 15:10:03,918 INFO  L130     BoogieDeclarations]: Found specification of procedure read_side1_failed_history
[2020-09-24 15:10:03,918 INFO  L130     BoogieDeclarations]: Found specification of procedure write_side2_failed_history
[2020-09-24 15:10:03,918 INFO  L130     BoogieDeclarations]: Found specification of procedure read_side2_failed_history
[2020-09-24 15:10:03,919 INFO  L130     BoogieDeclarations]: Found specification of procedure write_active_side_history
[2020-09-24 15:10:03,919 INFO  L130     BoogieDeclarations]: Found specification of procedure read_active_side_history
[2020-09-24 15:10:03,919 INFO  L130     BoogieDeclarations]: Found specification of procedure write_manual_selection_history
[2020-09-24 15:10:03,919 INFO  L130     BoogieDeclarations]: Found specification of procedure read_manual_selection_history
[2020-09-24 15:10:03,919 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-09-24 15:10:03,919 INFO  L130     BoogieDeclarations]: Found specification of procedure flip_the_side
[2020-09-24 15:10:03,920 INFO  L130     BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period
[2020-09-24 15:10:03,920 INFO  L130     BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period
[2020-09-24 15:10:03,920 INFO  L130     BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period
[2020-09-24 15:10:03,920 INFO  L130     BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period
[2020-09-24 15:10:03,920 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-09-24 15:10:03,921 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 15:10:03,921 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 15:10:03,921 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 15:10:05,072 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 15:10:05,073 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 15:10:05,083 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:10:05 BoogieIcfgContainer
[2020-09-24 15:10:05,083 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 15:10:05,085 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 15:10:05,085 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 15:10:05,089 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 15:10:05,089 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:10:03" (1/3) ...
[2020-09-24 15:10:05,090 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be99581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:10:05, skipping insertion in model container
[2020-09-24 15:10:05,090 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:10:03" (2/3) ...
[2020-09-24 15:10:05,091 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be99581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:10:05, skipping insertion in model container
[2020-09-24 15:10:05,091 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:10:05" (3/3) ...
[2020-09-24 15:10:05,093 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c
[2020-09-24 15:10:05,106 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 15:10:05,118 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 15:10:05,141 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 15:10:05,177 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 15:10:05,178 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 15:10:05,178 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 15:10:05,178 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 15:10:05,178 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 15:10:05,178 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 15:10:05,178 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 15:10:05,178 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 15:10:05,210 INFO  L276                IsEmpty]: Start isEmpty. Operand 574 states.
[2020-09-24 15:10:05,231 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 229
[2020-09-24 15:10:05,231 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:10:05,233 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]
[2020-09-24 15:10:05,233 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:10:05,240 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:10:05,241 INFO  L82        PathProgramCache]: Analyzing trace with hash -182402980, now seen corresponding path program 1 times
[2020-09-24 15:10:05,254 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:10:05,255 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439756145]
[2020-09-24 15:10:05,255 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:10:05,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:06,021 WARN  L193               SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2020-09-24 15:10:06,024 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:10:06,032 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:06,072 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-09-24 15:10:06,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:06,123 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100
[2020-09-24 15:10:06,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:06,196 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123
[2020-09-24 15:10:06,210 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:06,241 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:10:06,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:06,291 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148
[2020-09-24 15:10:06,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:06,329 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:06,331 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:06,382 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181
[2020-09-24 15:10:06,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:06,432 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:06,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:06,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 15:10:06,522 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439756145]
[2020-09-24 15:10:06,525 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:10:06,525 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2020-09-24 15:10:06,527 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281151870]
[2020-09-24 15:10:06,537 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-09-24 15:10:06,537 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:10:06,558 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-09-24 15:10:06,560 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182
[2020-09-24 15:10:06,563 INFO  L87              Difference]: Start difference. First operand 574 states. Second operand 14 states.
[2020-09-24 15:10:07,380 WARN  L193               SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 134
[2020-09-24 15:10:07,695 WARN  L193               SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133
[2020-09-24 15:10:07,913 WARN  L193               SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 136
[2020-09-24 15:10:12,098 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:10:12,098 INFO  L93              Difference]: Finished difference Result 1019 states and 1270 transitions.
[2020-09-24 15:10:12,100 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2020-09-24 15:10:12,101 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 228
[2020-09-24 15:10:12,103 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:10:12,130 INFO  L225             Difference]: With dead ends: 1019
[2020-09-24 15:10:12,130 INFO  L226             Difference]: Without dead ends: 550
[2020-09-24 15:10:12,142 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812
[2020-09-24 15:10:12,166 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 550 states.
[2020-09-24 15:10:12,251 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550.
[2020-09-24 15:10:12,253 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 550 states.
[2020-09-24 15:10:12,259 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 643 transitions.
[2020-09-24 15:10:12,262 INFO  L78                 Accepts]: Start accepts. Automaton has 550 states and 643 transitions. Word has length 228
[2020-09-24 15:10:12,263 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:10:12,263 INFO  L479      AbstractCegarLoop]: Abstraction has 550 states and 643 transitions.
[2020-09-24 15:10:12,263 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-09-24 15:10:12,263 INFO  L276                IsEmpty]: Start isEmpty. Operand 550 states and 643 transitions.
[2020-09-24 15:10:12,270 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 240
[2020-09-24 15:10:12,270 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:10:12,271 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]
[2020-09-24 15:10:12,271 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 15:10:12,271 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:10:12,271 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:10:12,272 INFO  L82        PathProgramCache]: Analyzing trace with hash 1513791060, now seen corresponding path program 1 times
[2020-09-24 15:10:12,272 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:10:12,272 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412359998]
[2020-09-24 15:10:12,273 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:10:12,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:12,584 WARN  L193               SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2020-09-24 15:10:12,585 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:10:12,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:12,609 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-09-24 15:10:12,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:12,616 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-09-24 15:10:12,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:12,639 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2020-09-24 15:10:12,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:12,661 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:10:12,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:12,693 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2020-09-24 15:10:12,696 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:12,722 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:12,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:12,758 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2020-09-24 15:10:12,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:12,790 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:12,791 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:12,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 15:10:12,868 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412359998]
[2020-09-24 15:10:12,868 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:10:12,868 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-09-24 15:10:12,869 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144659975]
[2020-09-24 15:10:12,871 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-24 15:10:12,871 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:10:12,872 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-24 15:10:12,872 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2020-09-24 15:10:12,872 INFO  L87              Difference]: Start difference. First operand 550 states and 643 transitions. Second operand 11 states.
[2020-09-24 15:10:14,906 WARN  L193               SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 133
[2020-09-24 15:10:15,082 WARN  L193               SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 135
[2020-09-24 15:10:16,591 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:10:16,592 INFO  L93              Difference]: Finished difference Result 976 states and 1167 transitions.
[2020-09-24 15:10:16,598 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2020-09-24 15:10:16,598 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 239
[2020-09-24 15:10:16,600 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:10:16,604 INFO  L225             Difference]: With dead ends: 976
[2020-09-24 15:10:16,605 INFO  L226             Difference]: Without dead ends: 555
[2020-09-24 15:10:16,608 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552
[2020-09-24 15:10:16,610 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 555 states.
[2020-09-24 15:10:16,648 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555.
[2020-09-24 15:10:16,648 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 555 states.
[2020-09-24 15:10:16,651 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 647 transitions.
[2020-09-24 15:10:16,652 INFO  L78                 Accepts]: Start accepts. Automaton has 555 states and 647 transitions. Word has length 239
[2020-09-24 15:10:16,653 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:10:16,653 INFO  L479      AbstractCegarLoop]: Abstraction has 555 states and 647 transitions.
[2020-09-24 15:10:16,654 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-24 15:10:16,654 INFO  L276                IsEmpty]: Start isEmpty. Operand 555 states and 647 transitions.
[2020-09-24 15:10:16,659 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 313
[2020-09-24 15:10:16,660 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:10:16,660 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:10:16,661 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 15:10:16,661 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:10:16,661 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:10:16,661 INFO  L82        PathProgramCache]: Analyzing trace with hash 960210052, now seen corresponding path program 1 times
[2020-09-24 15:10:16,662 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:10:16,662 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55162551]
[2020-09-24 15:10:16,662 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:10:16,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,015 WARN  L193               SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2020-09-24 15:10:17,017 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:10:17,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,073 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-09-24 15:10:17,077 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,085 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-09-24 15:10:17,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,112 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2020-09-24 15:10:17,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,146 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:10:17,147 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,195 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2020-09-24 15:10:17,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,233 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:17,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,287 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2020-09-24 15:10:17,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,331 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:17,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,369 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2020-09-24 15:10:17,375 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,447 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 15:10:17,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,487 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-09-24 15:10:17,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,495 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298
[2020-09-24 15:10:17,497 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:17,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-09-24 15:10:17,800 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55162551]
[2020-09-24 15:10:17,800 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:10:17,800 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2020-09-24 15:10:17,801 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779496462]
[2020-09-24 15:10:17,802 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-09-24 15:10:17,802 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:10:17,803 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-09-24 15:10:17,803 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240
[2020-09-24 15:10:17,804 INFO  L87              Difference]: Start difference. First operand 555 states and 647 transitions. Second operand 16 states.
[2020-09-24 15:10:17,950 WARN  L193               SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 102
[2020-09-24 15:10:18,609 WARN  L193               SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136
[2020-09-24 15:10:20,761 WARN  L193               SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 138
[2020-09-24 15:10:21,006 WARN  L193               SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 103
[2020-09-24 15:10:21,236 WARN  L193               SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 92
[2020-09-24 15:10:21,813 WARN  L193               SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 134
[2020-09-24 15:10:23,982 WARN  L193               SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 136
[2020-09-24 15:10:24,590 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:10:24,591 INFO  L93              Difference]: Finished difference Result 1181 states and 1390 transitions.
[2020-09-24 15:10:24,591 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. 
[2020-09-24 15:10:24,592 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 312
[2020-09-24 15:10:24,593 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:10:24,602 INFO  L225             Difference]: With dead ends: 1181
[2020-09-24 15:10:24,602 INFO  L226             Difference]: Without dead ends: 755
[2020-09-24 15:10:24,606 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256
[2020-09-24 15:10:24,609 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 755 states.
[2020-09-24 15:10:24,657 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 747.
[2020-09-24 15:10:24,657 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 747 states.
[2020-09-24 15:10:24,662 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 864 transitions.
[2020-09-24 15:10:24,662 INFO  L78                 Accepts]: Start accepts. Automaton has 747 states and 864 transitions. Word has length 312
[2020-09-24 15:10:24,663 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:10:24,664 INFO  L479      AbstractCegarLoop]: Abstraction has 747 states and 864 transitions.
[2020-09-24 15:10:24,664 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-09-24 15:10:24,664 INFO  L276                IsEmpty]: Start isEmpty. Operand 747 states and 864 transitions.
[2020-09-24 15:10:24,669 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 314
[2020-09-24 15:10:24,669 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:10:24,669 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:10:24,670 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 15:10:24,670 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:10:24,670 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:10:24,670 INFO  L82        PathProgramCache]: Analyzing trace with hash 1614602927, now seen corresponding path program 1 times
[2020-09-24 15:10:24,671 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:10:24,671 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164028617]
[2020-09-24 15:10:24,671 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:10:24,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,009 WARN  L193               SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2020-09-24 15:10:25,010 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:10:25,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,078 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-09-24 15:10:25,081 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,087 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-09-24 15:10:25,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,106 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2020-09-24 15:10:25,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,132 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:10:25,133 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,178 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2020-09-24 15:10:25,186 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,220 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:25,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,269 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2020-09-24 15:10:25,277 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,319 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:25,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,357 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2020-09-24 15:10:25,362 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,450 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 15:10:25,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,502 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-09-24 15:10:25,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,511 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299
[2020-09-24 15:10:25,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:25,789 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-09-24 15:10:25,789 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164028617]
[2020-09-24 15:10:25,790 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:10:25,790 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2020-09-24 15:10:25,790 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634730305]
[2020-09-24 15:10:25,791 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-09-24 15:10:25,792 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:10:25,792 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-09-24 15:10:25,792 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240
[2020-09-24 15:10:25,793 INFO  L87              Difference]: Start difference. First operand 747 states and 864 transitions. Second operand 16 states.
[2020-09-24 15:10:26,505 WARN  L193               SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 136
[2020-09-24 15:10:27,292 WARN  L193               SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 89
[2020-09-24 15:10:28,912 WARN  L193               SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 103
[2020-09-24 15:10:29,161 WARN  L193               SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 103
[2020-09-24 15:10:29,900 WARN  L193               SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 134
[2020-09-24 15:10:32,660 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:10:32,661 INFO  L93              Difference]: Finished difference Result 1189 states and 1400 transitions.
[2020-09-24 15:10:32,661 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. 
[2020-09-24 15:10:32,661 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 313
[2020-09-24 15:10:32,663 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:10:32,667 INFO  L225             Difference]: With dead ends: 1189
[2020-09-24 15:10:32,667 INFO  L226             Difference]: Without dead ends: 760
[2020-09-24 15:10:32,670 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=591, Invalid=1959, Unknown=0, NotChecked=0, Total=2550
[2020-09-24 15:10:32,672 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 760 states.
[2020-09-24 15:10:32,737 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 747.
[2020-09-24 15:10:32,737 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 747 states.
[2020-09-24 15:10:32,742 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 864 transitions.
[2020-09-24 15:10:32,742 INFO  L78                 Accepts]: Start accepts. Automaton has 747 states and 864 transitions. Word has length 313
[2020-09-24 15:10:32,743 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:10:32,743 INFO  L479      AbstractCegarLoop]: Abstraction has 747 states and 864 transitions.
[2020-09-24 15:10:32,743 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-09-24 15:10:32,743 INFO  L276                IsEmpty]: Start isEmpty. Operand 747 states and 864 transitions.
[2020-09-24 15:10:32,749 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 316
[2020-09-24 15:10:32,749 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:10:32,750 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:10:32,750 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 15:10:32,751 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:10:32,751 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:10:32,751 INFO  L82        PathProgramCache]: Analyzing trace with hash -334289294, now seen corresponding path program 1 times
[2020-09-24 15:10:32,751 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:10:32,752 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679458089]
[2020-09-24 15:10:32,752 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:10:32,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,073 WARN  L193               SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2020-09-24 15:10:33,074 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:10:33,082 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,120 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-09-24 15:10:33,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,133 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-09-24 15:10:33,135 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,153 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2020-09-24 15:10:33,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,179 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:10:33,180 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,212 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2020-09-24 15:10:33,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,242 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:33,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,278 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2020-09-24 15:10:33,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,318 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:33,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,343 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2020-09-24 15:10:33,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,404 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 15:10:33,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,437 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 15:10:33,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,446 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301
[2020-09-24 15:10:33,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:33,620 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-09-24 15:10:33,621 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679458089]
[2020-09-24 15:10:33,621 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:10:33,621 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2020-09-24 15:10:33,622 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117609860]
[2020-09-24 15:10:33,623 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-09-24 15:10:33,623 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:10:33,624 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-09-24 15:10:33,624 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240
[2020-09-24 15:10:33,624 INFO  L87              Difference]: Start difference. First operand 747 states and 864 transitions. Second operand 16 states.
[2020-09-24 15:10:34,263 WARN  L193               SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 134
[2020-09-24 15:10:35,039 WARN  L193               SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 136
[2020-09-24 15:10:36,698 WARN  L193               SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 138
[2020-09-24 15:10:36,982 WARN  L193               SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 103
[2020-09-24 15:10:39,632 WARN  L193               SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 136
[2020-09-24 15:10:40,242 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:10:40,242 INFO  L93              Difference]: Finished difference Result 1189 states and 1403 transitions.
[2020-09-24 15:10:40,243 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. 
[2020-09-24 15:10:40,243 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 315
[2020-09-24 15:10:40,244 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:10:40,250 INFO  L225             Difference]: With dead ends: 1189
[2020-09-24 15:10:40,250 INFO  L226             Difference]: Without dead ends: 760
[2020-09-24 15:10:40,253 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=611, Invalid=1645, Unknown=0, NotChecked=0, Total=2256
[2020-09-24 15:10:40,254 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 760 states.
[2020-09-24 15:10:40,290 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 749.
[2020-09-24 15:10:40,290 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 749 states.
[2020-09-24 15:10:40,294 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 866 transitions.
[2020-09-24 15:10:40,294 INFO  L78                 Accepts]: Start accepts. Automaton has 749 states and 866 transitions. Word has length 315
[2020-09-24 15:10:40,295 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:10:40,295 INFO  L479      AbstractCegarLoop]: Abstraction has 749 states and 866 transitions.
[2020-09-24 15:10:40,295 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-09-24 15:10:40,295 INFO  L276                IsEmpty]: Start isEmpty. Operand 749 states and 866 transitions.
[2020-09-24 15:10:40,297 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 316
[2020-09-24 15:10:40,298 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:10:40,298 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:10:40,298 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 15:10:40,299 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:10:40,299 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:10:40,299 INFO  L82        PathProgramCache]: Analyzing trace with hash 76317371, now seen corresponding path program 1 times
[2020-09-24 15:10:40,299 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:10:40,300 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925924747]
[2020-09-24 15:10:40,300 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:10:40,385 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,607 WARN  L193               SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2020-09-24 15:10:40,609 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:10:40,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,629 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-09-24 15:10:40,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,636 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-09-24 15:10:40,637 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,664 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2020-09-24 15:10:40,665 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,683 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:10:40,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,734 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2020-09-24 15:10:40,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,785 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:40,786 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,827 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2020-09-24 15:10:40,834 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,865 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:40,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,898 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2020-09-24 15:10:40,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,917 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 15:10:40,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,941 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 15:10:40,943 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:40,951 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301
[2020-09-24 15:10:40,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:41,123 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-09-24 15:10:41,125 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925924747]
[2020-09-24 15:10:41,126 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:10:41,127 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2020-09-24 15:10:41,128 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319944515]
[2020-09-24 15:10:41,129 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-09-24 15:10:41,129 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:10:41,129 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-09-24 15:10:41,131 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2020-09-24 15:10:41,131 INFO  L87              Difference]: Start difference. First operand 749 states and 866 transitions. Second operand 12 states.
[2020-09-24 15:10:42,623 WARN  L193               SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 135
[2020-09-24 15:10:46,449 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:10:46,450 INFO  L93              Difference]: Finished difference Result 1639 states and 1944 transitions.
[2020-09-24 15:10:46,454 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2020-09-24 15:10:46,455 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 315
[2020-09-24 15:10:46,455 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:10:46,462 INFO  L225             Difference]: With dead ends: 1639
[2020-09-24 15:10:46,462 INFO  L226             Difference]: Without dead ends: 1208
[2020-09-24 15:10:46,465 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=347, Invalid=843, Unknown=0, NotChecked=0, Total=1190
[2020-09-24 15:10:46,467 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1208 states.
[2020-09-24 15:10:46,555 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1169.
[2020-09-24 15:10:46,556 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1169 states.
[2020-09-24 15:10:46,560 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1377 transitions.
[2020-09-24 15:10:46,561 INFO  L78                 Accepts]: Start accepts. Automaton has 1169 states and 1377 transitions. Word has length 315
[2020-09-24 15:10:46,562 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:10:46,562 INFO  L479      AbstractCegarLoop]: Abstraction has 1169 states and 1377 transitions.
[2020-09-24 15:10:46,562 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-09-24 15:10:46,562 INFO  L276                IsEmpty]: Start isEmpty. Operand 1169 states and 1377 transitions.
[2020-09-24 15:10:46,565 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 317
[2020-09-24 15:10:46,565 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:10:46,565 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:10:46,566 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 15:10:46,566 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:10:46,566 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:10:46,566 INFO  L82        PathProgramCache]: Analyzing trace with hash 1072526262, now seen corresponding path program 1 times
[2020-09-24 15:10:46,567 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:10:46,567 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113488674]
[2020-09-24 15:10:46,567 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:10:46,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:46,836 WARN  L193               SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2020-09-24 15:10:46,836 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:10:46,840 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:46,853 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-09-24 15:10:46,855 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:46,859 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-09-24 15:10:46,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:46,881 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2020-09-24 15:10:46,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:46,903 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:10:46,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:46,937 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2020-09-24 15:10:46,940 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:46,966 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:46,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:47,007 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2020-09-24 15:10:47,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:47,049 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:47,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:47,075 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2020-09-24 15:10:47,079 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:47,087 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 15:10:47,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:47,110 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 15:10:47,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:47,115 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302
[2020-09-24 15:10:47,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:47,232 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-09-24 15:10:47,233 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113488674]
[2020-09-24 15:10:47,233 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:10:47,233 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2020-09-24 15:10:47,233 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023513382]
[2020-09-24 15:10:47,234 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-09-24 15:10:47,234 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:10:47,234 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-09-24 15:10:47,235 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2020-09-24 15:10:47,235 INFO  L87              Difference]: Start difference. First operand 1169 states and 1377 transitions. Second operand 12 states.
[2020-09-24 15:10:49,324 WARN  L193               SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 135
[2020-09-24 15:10:52,802 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:10:52,803 INFO  L93              Difference]: Finished difference Result 2591 states and 3129 transitions.
[2020-09-24 15:10:52,803 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2020-09-24 15:10:52,803 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 316
[2020-09-24 15:10:52,804 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:10:52,814 INFO  L225             Difference]: With dead ends: 2591
[2020-09-24 15:10:52,815 INFO  L226             Difference]: Without dead ends: 1830
[2020-09-24 15:10:52,819 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=348, Invalid=842, Unknown=0, NotChecked=0, Total=1190
[2020-09-24 15:10:52,822 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1830 states.
[2020-09-24 15:10:52,941 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1810.
[2020-09-24 15:10:52,941 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1810 states.
[2020-09-24 15:10:52,951 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2171 transitions.
[2020-09-24 15:10:52,956 INFO  L78                 Accepts]: Start accepts. Automaton has 1810 states and 2171 transitions. Word has length 316
[2020-09-24 15:10:52,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:10:52,957 INFO  L479      AbstractCegarLoop]: Abstraction has 1810 states and 2171 transitions.
[2020-09-24 15:10:52,957 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-09-24 15:10:52,957 INFO  L276                IsEmpty]: Start isEmpty. Operand 1810 states and 2171 transitions.
[2020-09-24 15:10:52,961 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 317
[2020-09-24 15:10:52,961 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:10:52,962 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:10:52,962 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-24 15:10:52,963 INFO  L427      AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:10:52,963 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:10:52,963 INFO  L82        PathProgramCache]: Analyzing trace with hash -231388138, now seen corresponding path program 1 times
[2020-09-24 15:10:52,963 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:10:52,964 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884080181]
[2020-09-24 15:10:52,964 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:10:53,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,270 WARN  L193               SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2020-09-24 15:10:53,270 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:10:53,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,293 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-09-24 15:10:53,294 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,299 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-09-24 15:10:53,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,316 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2020-09-24 15:10:53,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,334 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:10:53,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,367 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2020-09-24 15:10:53,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,391 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:53,392 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,426 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2020-09-24 15:10:53,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,452 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:53,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,478 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2020-09-24 15:10:53,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,486 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 15:10:53,487 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,511 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 15:10:53,512 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,516 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302
[2020-09-24 15:10:53,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:53,601 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-09-24 15:10:53,601 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884080181]
[2020-09-24 15:10:53,601 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:10:53,602 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-09-24 15:10:53,602 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483685348]
[2020-09-24 15:10:53,603 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-09-24 15:10:53,603 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:10:53,603 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-09-24 15:10:53,603 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156
[2020-09-24 15:10:53,604 INFO  L87              Difference]: Start difference. First operand 1810 states and 2171 transitions. Second operand 13 states.
[2020-09-24 15:10:55,712 WARN  L193               SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91
[2020-09-24 15:10:56,253 WARN  L193               SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 133
[2020-09-24 15:10:56,429 WARN  L193               SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 135
[2020-09-24 15:10:57,681 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:10:57,681 INFO  L93              Difference]: Finished difference Result 3210 states and 3909 transitions.
[2020-09-24 15:10:57,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2020-09-24 15:10:57,682 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 316
[2020-09-24 15:10:57,683 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:10:57,693 INFO  L225             Difference]: With dead ends: 3210
[2020-09-24 15:10:57,694 INFO  L226             Difference]: Without dead ends: 1834
[2020-09-24 15:10:57,701 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930
[2020-09-24 15:10:57,704 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1834 states.
[2020-09-24 15:10:57,814 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1834.
[2020-09-24 15:10:57,814 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1834 states.
[2020-09-24 15:10:57,821 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2191 transitions.
[2020-09-24 15:10:57,822 INFO  L78                 Accepts]: Start accepts. Automaton has 1834 states and 2191 transitions. Word has length 316
[2020-09-24 15:10:57,823 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:10:57,824 INFO  L479      AbstractCegarLoop]: Abstraction has 1834 states and 2191 transitions.
[2020-09-24 15:10:57,824 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-09-24 15:10:57,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 1834 states and 2191 transitions.
[2020-09-24 15:10:57,828 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 328
[2020-09-24 15:10:57,829 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:10:57,829 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:10:57,829 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-24 15:10:57,830 INFO  L427      AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:10:57,830 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:10:57,830 INFO  L82        PathProgramCache]: Analyzing trace with hash 1104461669, now seen corresponding path program 1 times
[2020-09-24 15:10:57,830 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:10:57,830 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546173028]
[2020-09-24 15:10:57,831 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:10:57,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,170 WARN  L193               SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2020-09-24 15:10:58,171 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:10:58,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,188 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-09-24 15:10:58,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,194 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111
[2020-09-24 15:10:58,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,210 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134
[2020-09-24 15:10:58,212 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,229 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 15:10:58,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,260 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2020-09-24 15:10:58,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,284 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:58,285 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,320 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192
[2020-09-24 15:10:58,322 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,346 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:10:58,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,372 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225
[2020-09-24 15:10:58,374 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,381 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4
[2020-09-24 15:10:58,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,409 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 15:10:58,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,415 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302
[2020-09-24 15:10:58,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,419 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307
[2020-09-24 15:10:58,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:10:58,550 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-09-24 15:10:58,551 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546173028]
[2020-09-24 15:10:58,551 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:10:58,551 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-09-24 15:10:58,551 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277493359]
[2020-09-24 15:10:58,552 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-09-24 15:10:58,552 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:10:58,553 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-09-24 15:10:58,554 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156
[2020-09-24 15:10:58,554 INFO  L87              Difference]: Start difference. First operand 1834 states and 2191 transitions. Second operand 13 states.