/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 17:42:38,470 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-18 17:42:38,474 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 17:42:38,512 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 17:42:38,513 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 17:42:38,526 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 17:42:38,527 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 17:42:38,530 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 17:42:38,533 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 17:42:38,535 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 17:42:38,538 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 17:42:38,540 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 17:42:38,541 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 17:42:38,544 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 17:42:38,547 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 17:42:38,549 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 17:42:38,551 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 17:42:38,552 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 17:42:38,554 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 17:42:38,562 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 17:42:38,564 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 17:42:38,564 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 17:42:38,567 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 17:42:38,568 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 17:42:38,572 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 17:42:38,572 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 17:42:38,572 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 17:42:38,575 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 17:42:38,576 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 17:42:38,577 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 17:42:38,577 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 17:42:38,578 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 17:42:38,578 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 17:42:38,579 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 17:42:38,580 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 17:42:38,581 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-18 17:42:38,581 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-18 17:42:38,581 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-18 17:42:38,582 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-18 17:42:38,583 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-18 17:42:38,584 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 17:42:38,585 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
[2020-08-18 17:42:38,631 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-18 17:42:38,631 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 17:42:38,634 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 17:42:38,634 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-18 17:42:38,634 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-18 17:42:38,635 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 17:42:38,635 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-18 17:42:38,635 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-18 17:42:38,635 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-18 17:42:38,636 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-18 17:42:38,637 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 17:42:38,637 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 17:42:38,637 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 17:42:38,638 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-18 17:42:38,638 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-18 17:42:38,638 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-18 17:42:38,638 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-18 17:42:38,639 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 17:42:38,639 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-18 17:42:38,639 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-18 17:42:38,639 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-18 17:42:38,639 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 17:42:38,640 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 17:42:38,640 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 17:42:38,640 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 17:42:38,640 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-18 17:42:38,641 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 17:42:38,641 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 17:42:38,641 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-18 17:42:38,641 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.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST;
[2020-08-18 17:42:38,974 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 17:42:38,990 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 17:42:38,994 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 17:42:38,996 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-18 17:42:38,996 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-18 17:42:38,997 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c
[2020-08-18 17:42:39,062 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a8d0b4c/8c77f80919564bc6866f721ecd6efd39/FLAG8796635f5
[2020-08-18 17:42:39,622 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-18 17:42:39,623 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c
[2020-08-18 17:42:39,635 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a8d0b4c/8c77f80919564bc6866f721ecd6efd39/FLAG8796635f5
[2020-08-18 17:42:39,911 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97a8d0b4c/8c77f80919564bc6866f721ecd6efd39
[2020-08-18 17:42:39,922 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 17:42:39,924 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 17:42:39,926 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 17:42:39,926 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 17:42:39,930 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 17:42:39,931 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:42:39" (1/1) ...
[2020-08-18 17:42:39,934 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7845d484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:42:39, skipping insertion in model container
[2020-08-18 17:42:39,935 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:42:39" (1/1) ...
[2020-08-18 17:42:39,943 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-18 17:42:39,988 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-18 17:42:40,314 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 17:42:40,490 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-18 17:42:40,627 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 17:42:40,658 INFO  L208         MainTranslator]: Completed translation
[2020-08-18 17:42:40,659 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:42:40 WrapperNode
[2020-08-18 17:42:40,659 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 17:42:40,660 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 17:42:40,660 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 17:42:40,660 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 17:42:40,671 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:42:40" (1/1) ...
[2020-08-18 17:42:40,671 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:42:40" (1/1) ...
[2020-08-18 17:42:40,690 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:42:40" (1/1) ...
[2020-08-18 17:42:40,690 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:42:40" (1/1) ...
[2020-08-18 17:42:40,722 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:42:40" (1/1) ...
[2020-08-18 17:42:40,733 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:42:40" (1/1) ...
[2020-08-18 17:42:40,738 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:42:40" (1/1) ...
[2020-08-18 17:42:40,745 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 17:42:40,746 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 17:42:40,746 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 17:42:40,746 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-18 17:42:40,747 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:42:40" (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
[2020-08-18 17:42:40,816 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 17:42:40,817 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 17:42:40,817 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-18 17:42:40,817 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-18 17:42:40,818 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-18 17:42:40,818 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-18 17:42:40,818 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-18 17:42:40,819 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-18 17:42:40,819 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-18 17:42:40,819 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-18 17:42:40,820 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-18 17:42:40,820 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-18 17:42:40,820 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-18 17:42:40,820 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-18 17:42:40,821 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-18 17:42:40,821 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-18 17:42:40,822 INFO  L138     BoogieDeclarations]: Found implementation of procedure startSystem
[2020-08-18 17:42:40,822 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-18 17:42:40,822 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-18 17:42:40,822 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-18 17:42:40,823 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-18 17:42:40,823 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-18 17:42:40,823 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-18 17:42:40,823 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-18 17:42:40,823 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-18 17:42:40,824 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-18 17:42:40,824 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-18 17:42:40,825 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-18 17:42:40,825 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 17:42:40,825 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-18 17:42:40,825 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-18 17:42:40,825 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-18 17:42:40,825 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-18 17:42:40,826 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-18 17:42:40,826 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-18 17:42:40,826 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-18 17:42:40,826 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 17:42:40,826 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-18 17:42:40,827 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-18 17:42:40,827 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-18 17:42:40,827 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-18 17:42:40,827 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-18 17:42:40,827 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-18 17:42:40,828 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-18 17:42:40,828 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-18 17:42:40,830 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-18 17:42:40,830 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-18 17:42:40,831 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-18 17:42:40,831 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-18 17:42:40,831 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-18 17:42:40,831 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-18 17:42:40,831 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-18 17:42:40,831 INFO  L130     BoogieDeclarations]: Found specification of procedure startSystem
[2020-08-18 17:42:40,832 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-18 17:42:40,832 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-18 17:42:40,832 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-18 17:42:40,832 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-18 17:42:40,833 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-18 17:42:40,833 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-18 17:42:40,833 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-18 17:42:40,833 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-18 17:42:40,834 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-18 17:42:40,834 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-18 17:42:40,834 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-18 17:42:40,834 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-18 17:42:40,834 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-18 17:42:40,834 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-18 17:42:40,835 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-18 17:42:40,835 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-18 17:42:40,835 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-18 17:42:40,835 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-18 17:42:40,835 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-18 17:42:40,836 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-18 17:42:40,836 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-18 17:42:40,837 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-18 17:42:40,837 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-18 17:42:40,837 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-18 17:42:40,838 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-18 17:42:40,838 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-18 17:42:40,839 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-18 17:42:40,839 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-18 17:42:40,839 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-18 17:42:40,839 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-18 17:42:40,839 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 17:42:40,839 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-18 17:42:40,839 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 17:42:41,946 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 17:42:41,946 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-18 17:42:41,954 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:42:41 BoogieIcfgContainer
[2020-08-18 17:42:41,954 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 17:42:41,957 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 17:42:41,957 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 17:42:41,960 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-18 17:42:41,960 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:42:39" (1/3) ...
[2020-08-18 17:42:41,961 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f4c975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:42:41, skipping insertion in model container
[2020-08-18 17:42:41,962 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:42:40" (2/3) ...
[2020-08-18 17:42:41,963 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f4c975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:42:41, skipping insertion in model container
[2020-08-18 17:42:41,963 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:42:41" (3/3) ...
[2020-08-18 17:42:41,964 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product06.cil.c
[2020-08-18 17:42:41,975 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 17:42:41,984 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 17:42:41,998 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 17:42:42,026 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-18 17:42:42,026 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-18 17:42:42,026 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 17:42:42,027 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 17:42:42,027 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 17:42:42,027 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-18 17:42:42,027 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 17:42:42,027 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 17:42:42,048 INFO  L276                IsEmpty]: Start isEmpty. Operand 152 states.
[2020-08-18 17:42:42,058 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-18 17:42:42,058 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:42:42,060 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]
[2020-08-18 17:42:42,060 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:42:42,066 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:42:42,067 INFO  L82        PathProgramCache]: Analyzing trace with hash 1057158692, now seen corresponding path program 1 times
[2020-08-18 17:42:42,076 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:42:42,076 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859376881]
[2020-08-18 17:42:42,077 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:42:42,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:42,703 WARN  L193               SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:42:42,705 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:42:42,718 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:42,803 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:42:42,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:42,809 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:42:42,813 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:42,814 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:42:42,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:42,821 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:42:42,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:42,823 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-18 17:42:42,825 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:42,826 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 17:42:42,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:42,830 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 17:42:42,831 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:42,845 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:42:42,846 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859376881]
[2020-08-18 17:42:42,848 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:42:42,849 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-18 17:42:42,850 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214188310]
[2020-08-18 17:42:42,855 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-18 17:42:42,856 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:42:42,870 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-18 17:42:42,871 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 17:42:42,873 INFO  L87              Difference]: Start difference. First operand 152 states. Second operand 3 states.
[2020-08-18 17:42:43,890 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:42:43,890 INFO  L93              Difference]: Finished difference Result 258 states and 341 transitions.
[2020-08-18 17:42:43,892 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-18 17:42:43,894 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-18 17:42:43,895 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:42:43,922 INFO  L225             Difference]: With dead ends: 258
[2020-08-18 17:42:43,922 INFO  L226             Difference]: Without dead ends: 140
[2020-08-18 17:42:43,930 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-18 17:42:43,953 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2020-08-18 17:42:44,070 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109.
[2020-08-18 17:42:44,071 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 109 states.
[2020-08-18 17:42:44,076 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions.
[2020-08-18 17:42:44,078 INFO  L78                 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 52
[2020-08-18 17:42:44,079 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:42:44,079 INFO  L479      AbstractCegarLoop]: Abstraction has 109 states and 127 transitions.
[2020-08-18 17:42:44,079 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-18 17:42:44,079 INFO  L276                IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions.
[2020-08-18 17:42:44,090 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-18 17:42:44,091 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:42:44,091 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]
[2020-08-18 17:42:44,091 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 17:42:44,092 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:42:44,092 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:42:44,092 INFO  L82        PathProgramCache]: Analyzing trace with hash -1710283751, now seen corresponding path program 1 times
[2020-08-18 17:42:44,092 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:42:44,093 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902946726]
[2020-08-18 17:42:44,093 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:42:44,188 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:44,514 WARN  L193               SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:42:44,515 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:42:44,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:44,540 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:42:44,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:44,541 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:42:44,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:44,543 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:42:44,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:44,545 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:42:44,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:44,547 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-18 17:42:44,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:44,549 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 17:42:44,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:44,551 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-18 17:42:44,552 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:44,559 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:42:44,559 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902946726]
[2020-08-18 17:42:44,560 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:42:44,560 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-18 17:42:44,560 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949464002]
[2020-08-18 17:42:44,562 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-18 17:42:44,562 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:42:44,562 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-18 17:42:44,563 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-18 17:42:44,563 INFO  L87              Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states.
[2020-08-18 17:42:44,981 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-18 17:42:45,615 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:42:45,615 INFO  L93              Difference]: Finished difference Result 187 states and 228 transitions.
[2020-08-18 17:42:45,616 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-18 17:42:45,616 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-18 17:42:45,617 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:42:45,619 INFO  L225             Difference]: With dead ends: 187
[2020-08-18 17:42:45,620 INFO  L226             Difference]: Without dead ends: 124
[2020-08-18 17:42:45,621 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-08-18 17:42:45,622 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-08-18 17:42:45,652 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100.
[2020-08-18 17:42:45,652 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 100 states.
[2020-08-18 17:42:45,653 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions.
[2020-08-18 17:42:45,653 INFO  L78                 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 53
[2020-08-18 17:42:45,654 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:42:45,654 INFO  L479      AbstractCegarLoop]: Abstraction has 100 states and 115 transitions.
[2020-08-18 17:42:45,654 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-18 17:42:45,654 INFO  L276                IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions.
[2020-08-18 17:42:45,656 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-08-18 17:42:45,656 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:42:45,656 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]
[2020-08-18 17:42:45,657 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 17:42:45,657 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:42:45,657 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:42:45,657 INFO  L82        PathProgramCache]: Analyzing trace with hash -830709307, now seen corresponding path program 1 times
[2020-08-18 17:42:45,657 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:42:45,658 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181912991]
[2020-08-18 17:42:45,658 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:42:45,692 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:45,973 WARN  L193               SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:42:45,974 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:42:45,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:46,019 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:42:46,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:46,021 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:42:46,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:46,023 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:42:46,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:46,055 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:42:46,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:46,057 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-18 17:42:46,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:46,059 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 17:42:46,060 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:46,060 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-18 17:42:46,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:46,070 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:42:46,070 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181912991]
[2020-08-18 17:42:46,071 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:42:46,071 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 17:42:46,071 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677889375]
[2020-08-18 17:42:46,072 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 17:42:46,072 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:42:46,072 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 17:42:46,073 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 17:42:46,073 INFO  L87              Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states.
[2020-08-18 17:42:46,409 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:42:46,707 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:42:46,947 WARN  L193               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:42:47,175 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:42:48,102 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:42:48,103 INFO  L93              Difference]: Finished difference Result 200 states and 246 transitions.
[2020-08-18 17:42:48,104 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-18 17:42:48,104 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 58
[2020-08-18 17:42:48,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:42:48,107 INFO  L225             Difference]: With dead ends: 200
[2020-08-18 17:42:48,107 INFO  L226             Difference]: Without dead ends: 124
[2020-08-18 17:42:48,109 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-08-18 17:42:48,109 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2020-08-18 17:42:48,137 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100.
[2020-08-18 17:42:48,137 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 100 states.
[2020-08-18 17:42:48,138 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions.
[2020-08-18 17:42:48,139 INFO  L78                 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 58
[2020-08-18 17:42:48,139 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:42:48,139 INFO  L479      AbstractCegarLoop]: Abstraction has 100 states and 114 transitions.
[2020-08-18 17:42:48,139 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 17:42:48,140 INFO  L276                IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions.
[2020-08-18 17:42:48,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2020-08-18 17:42:48,141 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:42:48,141 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]
[2020-08-18 17:42:48,141 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 17:42:48,142 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:42:48,142 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:42:48,142 INFO  L82        PathProgramCache]: Analyzing trace with hash -1834721556, now seen corresponding path program 1 times
[2020-08-18 17:42:48,142 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:42:48,143 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300211539]
[2020-08-18 17:42:48,143 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:42:48,176 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:48,455 WARN  L193               SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:42:48,456 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:42:48,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:48,485 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:42:48,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:48,487 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:42:48,488 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:48,489 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:42:48,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:48,492 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:42:48,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:48,525 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-08-18 17:42:48,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:48,528 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:42:48,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:48,532 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2020-08-18 17:42:48,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:48,536 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2020-08-18 17:42:48,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:48,553 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58
[2020-08-18 17:42:48,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:48,566 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:42:48,567 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300211539]
[2020-08-18 17:42:48,567 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:42:48,567 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-18 17:42:48,567 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341975993]
[2020-08-18 17:42:48,568 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 17:42:48,569 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:42:48,569 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 17:42:48,570 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-18 17:42:48,570 INFO  L87              Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 8 states.
[2020-08-18 17:42:48,929 WARN  L193               SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:42:50,218 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:42:50,549 WARN  L193               SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:42:50,785 WARN  L193               SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-18 17:42:51,158 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:42:51,477 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:42:51,478 INFO  L93              Difference]: Finished difference Result 299 states and 393 transitions.
[2020-08-18 17:42:51,479 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-08-18 17:42:51,479 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 66
[2020-08-18 17:42:51,480 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:42:51,483 INFO  L225             Difference]: With dead ends: 299
[2020-08-18 17:42:51,483 INFO  L226             Difference]: Without dead ends: 223
[2020-08-18 17:42:51,484 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-08-18 17:42:51,485 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 223 states.
[2020-08-18 17:42:51,531 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174.
[2020-08-18 17:42:51,531 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 174 states.
[2020-08-18 17:42:51,533 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions.
[2020-08-18 17:42:51,533 INFO  L78                 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 66
[2020-08-18 17:42:51,534 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:42:51,534 INFO  L479      AbstractCegarLoop]: Abstraction has 174 states and 205 transitions.
[2020-08-18 17:42:51,534 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 17:42:51,534 INFO  L276                IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions.
[2020-08-18 17:42:51,536 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2020-08-18 17:42:51,536 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:42:51,536 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]
[2020-08-18 17:42:51,536 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 17:42:51,537 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:42:51,537 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:42:51,537 INFO  L82        PathProgramCache]: Analyzing trace with hash 1027907532, now seen corresponding path program 1 times
[2020-08-18 17:42:51,537 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:42:51,538 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417181439]
[2020-08-18 17:42:51,538 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:42:51,567 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,826 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-18 17:42:51,827 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 17:42:51,839 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,855 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 17:42:51,856 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,857 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-18 17:42:51,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,858 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-18 17:42:51,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,861 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-18 17:42:51,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,869 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-08-18 17:42:51,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,872 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 17:42:51,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,881 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-18 17:42:51,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,883 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-18 17:42:51,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,885 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-08-18 17:42:51,886 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,887 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2020-08-18 17:42:51,888 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,889 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2020-08-18 17:42:51,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 17:42:51,900 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 17:42:51,901 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417181439]
[2020-08-18 17:42:51,901 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 17:42:51,901 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-18 17:42:51,901 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805477090]
[2020-08-18 17:42:51,902 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-18 17:42:51,902 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 17:42:51,902 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-18 17:42:51,903 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-18 17:42:51,903 INFO  L87              Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states.
[2020-08-18 17:42:52,259 WARN  L193               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-18 17:42:52,869 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 17:42:52,869 INFO  L93              Difference]: Finished difference Result 296 states and 363 transitions.
[2020-08-18 17:42:52,869 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-18 17:42:52,869 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 74
[2020-08-18 17:42:52,870 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 17:42:52,871 INFO  L225             Difference]: With dead ends: 296
[2020-08-18 17:42:52,872 INFO  L226             Difference]: Without dead ends: 146
[2020-08-18 17:42:52,873 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2020-08-18 17:42:52,874 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2020-08-18 17:42:52,902 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133.
[2020-08-18 17:42:52,902 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 133 states.
[2020-08-18 17:42:52,903 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions.
[2020-08-18 17:42:52,903 INFO  L78                 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 74
[2020-08-18 17:42:52,904 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 17:42:52,904 INFO  L479      AbstractCegarLoop]: Abstraction has 133 states and 148 transitions.
[2020-08-18 17:42:52,904 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-18 17:42:52,904 INFO  L276                IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions.
[2020-08-18 17:42:52,905 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2020-08-18 17:42:52,905 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 17:42:52,905 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]
[2020-08-18 17:42:52,905 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 17:42:52,905 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 17:42:52,905 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 17:42:52,905 INFO  L82        PathProgramCache]: Analyzing trace with hash 1882239654, now seen corresponding path program 1 times
[2020-08-18 17:42:52,906 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 17:42:52,906 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848866983]
[2020-08-18 17:42:52,906 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 17:42:52,957 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-18 17:42:52,960 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-18 17:42:52,961 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-18 17:42:52,965 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-18 17:42:52,986 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:42:52 BoogieIcfgContainer
[2020-08-18 17:42:52,987 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-18 17:42:52,989 INFO  L168              Benchmark]: Toolchain (without parser) took 13064.73 ms. Allocated memory was 148.9 MB in the beginning and 401.1 MB in the end (delta: 252.2 MB). Free memory was 104.1 MB in the beginning and 274.8 MB in the end (delta: -170.7 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB.
[2020-08-18 17:42:52,990 INFO  L168              Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-08-18 17:42:52,991 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 734.16 ms. Allocated memory was 148.9 MB in the beginning and 209.7 MB in the end (delta: 60.8 MB). Free memory was 103.9 MB in the beginning and 180.2 MB in the end (delta: -76.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB.
[2020-08-18 17:42:52,991 INFO  L168              Benchmark]: Boogie Preprocessor took 85.23 ms. Allocated memory is still 209.7 MB. Free memory was 180.2 MB in the beginning and 175.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB.
[2020-08-18 17:42:52,992 INFO  L168              Benchmark]: RCFGBuilder took 1209.00 ms. Allocated memory was 209.7 MB in the beginning and 230.2 MB in the end (delta: 20.4 MB). Free memory was 175.7 MB in the beginning and 192.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB.
[2020-08-18 17:42:52,993 INFO  L168              Benchmark]: TraceAbstraction took 11030.29 ms. Allocated memory was 230.2 MB in the beginning and 401.1 MB in the end (delta: 170.9 MB). Free memory was 192.7 MB in the beginning and 274.8 MB in the end (delta: -82.1 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB.
[2020-08-18 17:42:52,997 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 734.16 ms. Allocated memory was 148.9 MB in the beginning and 209.7 MB in the end (delta: 60.8 MB). Free memory was 103.9 MB in the beginning and 180.2 MB in the end (delta: -76.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 85.23 ms. Allocated memory is still 209.7 MB. Free memory was 180.2 MB in the beginning and 175.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1209.00 ms. Allocated memory was 209.7 MB in the beginning and 230.2 MB in the end (delta: 20.4 MB). Free memory was 175.7 MB in the beginning and 192.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 11030.29 ms. Allocated memory was 230.2 MB in the beginning and 401.1 MB in the end (delta: 170.9 MB). Free memory was 192.7 MB in the beginning and 274.8 MB in the end (delta: -82.1 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L96]               int pumpRunning  =    0;
[L97]               int systemActive  =    1;
[L309]              int waterLevel  =    1;
[L310]              int methaneLevelCritical  =    0;
[L389]              int cleanupTimeShifts  =    4;
[L654]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L462]              int retValue_acc ;
[L463]              int tmp ;
[L467]  FCALL       select_helpers()
[L468]  FCALL       select_features()
[L469]  CALL, EXPR  valid_product()
[L78]               int retValue_acc ;
[L81]               retValue_acc = 1
[L82]               return (retValue_acc);
[L469]  RET, EXPR   valid_product()
[L469]              tmp = valid_product()
[L471]  COND TRUE   \read(tmp)
[L473]  FCALL       setup()
[L474]  CALL        runTest()
[L456]  CALL        test()
[L242]              int splverifierCounter ;
[L243]              int tmp ;
[L244]              int tmp___0 ;
[L245]              int tmp___1 ;
[L246]              int tmp___2 ;
[L249]              splverifierCounter = 0
[L251]  COND TRUE   1
[L253]  COND TRUE   splverifierCounter < 4
[L259]              tmp = __VERIFIER_nondet_int()
[L261]  COND TRUE   \read(tmp)
[L263]  CALL        waterRise()
[L327]  COND TRUE   waterLevel < 2
[L328]              waterLevel = waterLevel + 1
[L263]  RET         waterRise()
[L269]              tmp___0 = __VERIFIER_nondet_int()
[L271]  COND FALSE  !(\read(tmp___0))
[L279]              tmp___2 = __VERIFIER_nondet_int()
[L281]  COND FALSE  !(\read(tmp___2))
[L287]              tmp___1 = __VERIFIER_nondet_int()
[L289]  COND TRUE   \read(tmp___1)
[L296]  CALL        timeShift()
[L104]  COND FALSE  !(\read(pumpRunning))
[L111]  COND TRUE   \read(systemActive)
[L113]  CALL        processEnvironment()
[L133]              int tmp ;
[L136]  COND FALSE  !(\read(pumpRunning))
[L151]  FCALL       processEnvironment__wrappee__base()
[L113]  RET         processEnvironment()
[L119]  CALL        __utac_acc__Specification3_spec__1()
[L852]              int tmp ;
[L853]              int tmp___0 ;
[L854]              int tmp___1 ;
[L858]  CALL, EXPR  isMethaneLevelCritical()
[L348]              int retValue_acc ;
[L351]              retValue_acc = methaneLevelCritical
[L352]              return (retValue_acc);
[L858]  RET, EXPR   isMethaneLevelCritical()
[L858]              tmp = isMethaneLevelCritical()
[L860]  COND FALSE  !(\read(tmp))
[L864]  CALL, EXPR  getWaterLevel()
[L380]              int retValue_acc ;
[L383]              retValue_acc = waterLevel
[L384]              return (retValue_acc);
[L864]  RET, EXPR   getWaterLevel()
[L864]              tmp___0 = getWaterLevel()
[L866]  COND TRUE   tmp___0 == 2
[L868]  CALL, EXPR  isPumpRunning()
[L185]              int retValue_acc ;
[L188]              retValue_acc = pumpRunning
[L189]              return (retValue_acc);
[L868]  RET, EXPR   isPumpRunning()
[L868]              tmp___1 = isPumpRunning()
[L870]  COND FALSE  !(\read(tmp___1))
[L874]  CALL        __automaton_fail()
[L44]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 36 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 446 SDtfs, 658 SDslu, 246 SDs, 0 SdLazy, 1341 SolverSat, 451 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 373 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 298 ConstructedInterpolants, 0 QuantifiedInterpolants, 85738 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...