/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c


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


This is Ultimate 0.1.25-177f698
[2020-08-21 20:23:41,543 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-21 20:23:41,547 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-21 20:23:41,584 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-21 20:23:41,584 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-21 20:23:41,594 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-21 20:23:41,596 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-21 20:23:41,601 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-21 20:23:41,604 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-21 20:23:41,605 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-21 20:23:41,606 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-21 20:23:41,607 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-21 20:23:41,607 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-21 20:23:41,608 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-21 20:23:41,609 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-21 20:23:41,610 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-21 20:23:41,611 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-21 20:23:41,612 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-21 20:23:41,613 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-21 20:23:41,615 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-21 20:23:41,616 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-21 20:23:41,617 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-21 20:23:41,618 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-21 20:23:41,619 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-21 20:23:41,621 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-21 20:23:41,621 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-21 20:23:41,621 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-21 20:23:41,622 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-21 20:23:41,623 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-21 20:23:41,624 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-21 20:23:41,624 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-21 20:23:41,625 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-21 20:23:41,625 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-21 20:23:41,626 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-21 20:23:41,627 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-21 20:23:41,627 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-21 20:23:41,628 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-21 20:23:41,628 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-21 20:23:41,628 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-08-21 20:23:41,629 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-21 20:23:41,630 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
[2020-08-21 20:23:41,651 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-21 20:23:41,651 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-21 20:23:41,653 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-21 20:23:41,653 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-21 20:23:41,653 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-21 20:23:41,653 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-21 20:23:41,653 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-21 20:23:41,654 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-21 20:23:41,654 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-21 20:23:41,654 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-21 20:23:41,654 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-21 20:23:41,654 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-21 20:23:41,655 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-21 20:23:41,655 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-21 20:23:41,655 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-21 20:23:41,655 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-21 20:23:41,655 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-21 20:23:41,656 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-21 20:23:41,656 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-21 20:23:41,656 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-21 20:23:41,656 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-21 20:23:41,656 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 20:23:41,656 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-21 20:23:41,657 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-21 20:23:41,657 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-21 20:23:41,657 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-21 20:23:41,657 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-21 20:23:41,657 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-21 20:23:41,658 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-21 20:23:41,658 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=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;
[2020-08-21 20:23:41,965 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-21 20:23:41,983 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-21 20:23:41,987 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-21 20:23:41,989 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-21 20:23:41,991 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-21 20:23:41,991 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c
[2020-08-21 20:23:42,058 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f19b0f95e/a4a77c1138fa4811ae7df0ad83a45555/FLAGbb07b3c42
[2020-08-21 20:23:42,608 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-21 20:23:42,608 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c
[2020-08-21 20:23:42,621 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f19b0f95e/a4a77c1138fa4811ae7df0ad83a45555/FLAGbb07b3c42
[2020-08-21 20:23:42,898 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f19b0f95e/a4a77c1138fa4811ae7df0ad83a45555
[2020-08-21 20:23:42,908 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-21 20:23:42,910 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-21 20:23:42,911 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-21 20:23:42,911 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-21 20:23:42,914 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-21 20:23:42,915 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:23:42" (1/1) ...
[2020-08-21 20:23:42,918 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:42, skipping insertion in model container
[2020-08-21 20:23:42,919 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:23:42" (1/1) ...
[2020-08-21 20:23:42,926 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-21 20:23:42,985 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-21 20:23:43,437 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 20:23:43,450 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-21 20:23:43,520 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 20:23:43,555 INFO  L208         MainTranslator]: Completed translation
[2020-08-21 20:23:43,556 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43 WrapperNode
[2020-08-21 20:23:43,556 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-21 20:23:43,556 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-21 20:23:43,557 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-21 20:23:43,557 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-21 20:23:43,573 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ...
[2020-08-21 20:23:43,574 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ...
[2020-08-21 20:23:43,603 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ...
[2020-08-21 20:23:43,603 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ...
[2020-08-21 20:23:43,637 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ...
[2020-08-21 20:23:43,648 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ...
[2020-08-21 20:23:43,653 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ...
[2020-08-21 20:23:43,660 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-21 20:23:43,661 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-21 20:23:43,661 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-21 20:23:43,661 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-21 20:23:43,662 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (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
[2020-08-21 20:23:43,740 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-21 20:23:43,740 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-21 20:23:43,741 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2020-08-21 20:23:43,741 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2020-08-21 20:23:43,741 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2020-08-21 20:23:43,742 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2020-08-21 20:23:43,742 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2020-08-21 20:23:43,743 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2020-08-21 20:23:43,743 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2020-08-21 20:23:43,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2020-08-21 20:23:43,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base
[2020-08-21 20:23:43,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor
[2020-08-21 20:23:43,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure processEnvironment
[2020-08-21 20:23:43,744 INFO  L138     BoogieDeclarations]: Found implementation of procedure activatePump
[2020-08-21 20:23:43,745 INFO  L138     BoogieDeclarations]: Found implementation of procedure deactivatePump
[2020-08-21 20:23:43,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneAlarm
[2020-08-21 20:23:43,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPumpRunning
[2020-08-21 20:23:43,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure printPump
[2020-08-21 20:23:43,746 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterLevel
[2020-08-21 20:23:43,747 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2020-08-21 20:23:43,747 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2020-08-21 20:23:43,747 INFO  L138     BoogieDeclarations]: Found implementation of procedure lowerWaterLevel
[2020-08-21 20:23:43,747 INFO  L138     BoogieDeclarations]: Found implementation of procedure waterRise
[2020-08-21 20:23:43,747 INFO  L138     BoogieDeclarations]: Found implementation of procedure changeMethaneLevel
[2020-08-21 20:23:43,748 INFO  L138     BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical
[2020-08-21 20:23:43,748 INFO  L138     BoogieDeclarations]: Found implementation of procedure printEnvironment
[2020-08-21 20:23:43,749 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWaterLevel
[2020-08-21 20:23:43,749 INFO  L138     BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry
[2020-08-21 20:23:43,749 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2020-08-21 20:23:43,750 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2020-08-21 20:23:43,750 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2020-08-21 20:23:43,750 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2020-08-21 20:23:43,750 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-21 20:23:43,750 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2020-08-21 20:23:43,750 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2020-08-21 20:23:43,751 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2020-08-21 20:23:43,751 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2020-08-21 20:23:43,751 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2020-08-21 20:23:43,751 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-21 20:23:43,751 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-21 20:23:43,751 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2020-08-21 20:23:43,751 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-08-21 20:23:43,754 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-21 20:23:43,754 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-21 20:23:43,755 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2020-08-21 20:23:43,757 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-21 20:23:43,757 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-21 20:23:43,757 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-21 20:23:43,757 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-21 20:23:43,757 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2020-08-21 20:23:43,757 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-21 20:23:43,758 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2020-08-21 20:23:43,758 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2020-08-21 20:23:43,758 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-21 20:23:43,758 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2020-08-21 20:23:43,759 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2020-08-21 20:23:43,759 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-21 20:23:43,759 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2020-08-21 20:23:43,759 INFO  L130     BoogieDeclarations]: Found specification of procedure lowerWaterLevel
[2020-08-21 20:23:43,759 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical
[2020-08-21 20:23:43,760 INFO  L130     BoogieDeclarations]: Found specification of procedure printEnvironment
[2020-08-21 20:23:43,760 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry
[2020-08-21 20:23:43,760 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2020-08-21 20:23:43,760 INFO  L130     BoogieDeclarations]: Found specification of procedure activatePump
[2020-08-21 20:23:43,760 INFO  L130     BoogieDeclarations]: Found specification of procedure deactivatePump
[2020-08-21 20:23:43,760 INFO  L130     BoogieDeclarations]: Found specification of procedure isPumpRunning
[2020-08-21 20:23:43,761 INFO  L130     BoogieDeclarations]: Found specification of procedure printPump
[2020-08-21 20:23:43,761 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2020-08-21 20:23:43,761 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment
[2020-08-21 20:23:43,761 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base
[2020-08-21 20:23:43,762 INFO  L130     BoogieDeclarations]: Found specification of procedure isLowWaterLevel
[2020-08-21 20:23:43,763 INFO  L130     BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor
[2020-08-21 20:23:43,763 INFO  L130     BoogieDeclarations]: Found specification of procedure isMethaneAlarm
[2020-08-21 20:23:43,764 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2020-08-21 20:23:43,764 INFO  L130     BoogieDeclarations]: Found specification of procedure waterRise
[2020-08-21 20:23:43,765 INFO  L130     BoogieDeclarations]: Found specification of procedure changeMethaneLevel
[2020-08-21 20:23:43,765 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2020-08-21 20:23:43,765 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2020-08-21 20:23:43,766 INFO  L130     BoogieDeclarations]: Found specification of procedure getWaterLevel
[2020-08-21 20:23:43,766 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2020-08-21 20:23:43,766 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2020-08-21 20:23:43,766 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2020-08-21 20:23:43,766 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2020-08-21 20:23:43,766 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2020-08-21 20:23:43,767 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2020-08-21 20:23:43,767 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-21 20:23:43,767 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2020-08-21 20:23:43,767 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-21 20:23:43,767 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-21 20:23:43,767 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-21 20:23:44,798 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-21 20:23:44,798 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-21 20:23:44,803 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:23:44 BoogieIcfgContainer
[2020-08-21 20:23:44,803 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-21 20:23:44,805 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-21 20:23:44,805 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-21 20:23:44,808 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-21 20:23:44,808 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:23:42" (1/3) ...
[2020-08-21 20:23:44,809 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d693dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:23:44, skipping insertion in model container
[2020-08-21 20:23:44,809 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (2/3) ...
[2020-08-21 20:23:44,810 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d693dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:23:44, skipping insertion in model container
[2020-08-21 20:23:44,810 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:23:44" (3/3) ...
[2020-08-21 20:23:44,812 INFO  L109   eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c
[2020-08-21 20:23:44,822 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-21 20:23:44,830 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-21 20:23:44,844 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-21 20:23:44,869 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-21 20:23:44,869 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-21 20:23:44,869 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-21 20:23:44,869 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-21 20:23:44,870 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-21 20:23:44,870 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-21 20:23:44,870 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-21 20:23:44,870 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-21 20:23:44,895 INFO  L276                IsEmpty]: Start isEmpty. Operand 168 states.
[2020-08-21 20:23:44,906 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-08-21 20:23:44,907 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 20:23:44,908 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]
[2020-08-21 20:23:44,908 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 20:23:44,915 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 20:23:44,915 INFO  L82        PathProgramCache]: Analyzing trace with hash -93036640, now seen corresponding path program 1 times
[2020-08-21 20:23:44,925 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 20:23:44,925 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370560595]
[2020-08-21 20:23:44,926 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 20:23:45,185 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:45,629 WARN  L193               SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 20:23:45,630 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 20:23:45,640 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:45,676 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 20:23:45,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:45,679 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 20:23:45,680 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:45,681 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 20:23:45,682 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:45,684 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 20:23:45,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:45,686 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32
[2020-08-21 20:23:45,688 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:45,690 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-08-21 20:23:45,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:45,699 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-08-21 20:23:45,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:45,725 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 20:23:45,726 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370560595]
[2020-08-21 20:23:45,728 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 20:23:45,729 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-21 20:23:45,730 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432529286]
[2020-08-21 20:23:45,735 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-21 20:23:45,736 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 20:23:45,751 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-21 20:23:45,752 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 20:23:45,754 INFO  L87              Difference]: Start difference. First operand 168 states. Second operand 3 states.
[2020-08-21 20:23:46,909 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 20:23:46,909 INFO  L93              Difference]: Finished difference Result 291 states and 384 transitions.
[2020-08-21 20:23:46,910 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-21 20:23:46,912 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-08-21 20:23:46,912 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 20:23:46,931 INFO  L225             Difference]: With dead ends: 291
[2020-08-21 20:23:46,931 INFO  L226             Difference]: Without dead ends: 157
[2020-08-21 20:23:46,938 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 20:23:46,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 157 states.
[2020-08-21 20:23:47,041 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125.
[2020-08-21 20:23:47,042 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 125 states.
[2020-08-21 20:23:47,045 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions.
[2020-08-21 20:23:47,047 INFO  L78                 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52
[2020-08-21 20:23:47,047 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 20:23:47,047 INFO  L479      AbstractCegarLoop]: Abstraction has 125 states and 148 transitions.
[2020-08-21 20:23:47,047 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-21 20:23:47,048 INFO  L276                IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions.
[2020-08-21 20:23:47,052 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-08-21 20:23:47,052 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 20:23:47,053 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]
[2020-08-21 20:23:47,053 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-21 20:23:47,053 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 20:23:47,054 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 20:23:47,054 INFO  L82        PathProgramCache]: Analyzing trace with hash 1403357497, now seen corresponding path program 1 times
[2020-08-21 20:23:47,054 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 20:23:47,054 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107471154]
[2020-08-21 20:23:47,055 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 20:23:47,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:47,402 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 20:23:47,403 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 20:23:47,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:47,432 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 20:23:47,433 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:47,434 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 20:23:47,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:47,436 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 20:23:47,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:47,438 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 20:23:47,438 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:47,440 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33
[2020-08-21 20:23:47,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:47,442 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-21 20:23:47,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:47,443 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-08-21 20:23:47,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:47,451 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 20:23:47,452 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107471154]
[2020-08-21 20:23:47,452 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 20:23:47,452 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-21 20:23:47,452 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590379913]
[2020-08-21 20:23:47,454 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-21 20:23:47,454 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 20:23:47,455 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-21 20:23:47,455 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-21 20:23:47,455 INFO  L87              Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states.
[2020-08-21 20:23:47,880 WARN  L193               SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187
[2020-08-21 20:23:48,674 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 20:23:48,674 INFO  L93              Difference]: Finished difference Result 224 states and 275 transitions.
[2020-08-21 20:23:48,675 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-21 20:23:48,675 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 53
[2020-08-21 20:23:48,676 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 20:23:48,679 INFO  L225             Difference]: With dead ends: 224
[2020-08-21 20:23:48,680 INFO  L226             Difference]: Without dead ends: 141
[2020-08-21 20:23:48,682 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
[2020-08-21 20:23:48,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2020-08-21 20:23:48,721 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116.
[2020-08-21 20:23:48,722 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 116 states.
[2020-08-21 20:23:48,723 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions.
[2020-08-21 20:23:48,724 INFO  L78                 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 53
[2020-08-21 20:23:48,724 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 20:23:48,724 INFO  L479      AbstractCegarLoop]: Abstraction has 116 states and 136 transitions.
[2020-08-21 20:23:48,724 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-21 20:23:48,724 INFO  L276                IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions.
[2020-08-21 20:23:48,727 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2020-08-21 20:23:48,727 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 20:23:48,727 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]
[2020-08-21 20:23:48,727 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-21 20:23:48,728 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 20:23:48,728 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 20:23:48,728 INFO  L82        PathProgramCache]: Analyzing trace with hash -1713517472, now seen corresponding path program 1 times
[2020-08-21 20:23:48,728 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 20:23:48,729 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155673159]
[2020-08-21 20:23:48,729 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 20:23:48,764 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:49,056 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 20:23:49,057 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 20:23:49,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:49,101 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 20:23:49,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:49,104 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 20:23:49,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:49,107 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 20:23:49,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:49,127 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 20:23:49,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:49,130 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-08-21 20:23:49,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:49,132 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2020-08-21 20:23:49,133 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:49,134 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49
[2020-08-21 20:23:49,135 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:49,145 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 20:23:49,145 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155673159]
[2020-08-21 20:23:49,146 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 20:23:49,146 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-21 20:23:49,147 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472713140]
[2020-08-21 20:23:49,149 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-21 20:23:49,152 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 20:23:49,153 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-21 20:23:49,153 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-21 20:23:49,153 INFO  L87              Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 8 states.
[2020-08-21 20:23:49,575 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 20:23:49,865 WARN  L193               SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 20:23:50,098 WARN  L193               SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 20:23:50,378 WARN  L193               SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 20:23:51,482 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 20:23:51,483 INFO  L93              Difference]: Finished difference Result 233 states and 289 transitions.
[2020-08-21 20:23:51,484 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-21 20:23:51,484 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 57
[2020-08-21 20:23:51,485 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 20:23:51,487 INFO  L225             Difference]: With dead ends: 233
[2020-08-21 20:23:51,487 INFO  L226             Difference]: Without dead ends: 141
[2020-08-21 20:23:51,489 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-08-21 20:23:51,489 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2020-08-21 20:23:51,525 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116.
[2020-08-21 20:23:51,525 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 116 states.
[2020-08-21 20:23:51,526 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions.
[2020-08-21 20:23:51,526 INFO  L78                 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 57
[2020-08-21 20:23:51,527 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 20:23:51,527 INFO  L479      AbstractCegarLoop]: Abstraction has 116 states and 135 transitions.
[2020-08-21 20:23:51,527 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-21 20:23:51,527 INFO  L276                IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions.
[2020-08-21 20:23:51,530 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2020-08-21 20:23:51,530 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 20:23:51,530 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]
[2020-08-21 20:23:51,530 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-21 20:23:51,531 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 20:23:51,531 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 20:23:51,531 INFO  L82        PathProgramCache]: Analyzing trace with hash -949895556, now seen corresponding path program 1 times
[2020-08-21 20:23:51,531 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 20:23:51,532 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035379145]
[2020-08-21 20:23:51,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 20:23:51,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,811 WARN  L193               SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184
[2020-08-21 20:23:51,813 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 20:23:51,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,845 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-21 20:23:51,846 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,847 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-21 20:23:51,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,849 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-21 20:23:51,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,851 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-08-21 20:23:51,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,871 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2020-08-21 20:23:51,873 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,875 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 20:23:51,876 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,877 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-08-21 20:23:51,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,879 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-08-21 20:23:51,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,881 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56
[2020-08-21 20:23:51,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,895 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62
[2020-08-21 20:23:51,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 20:23:51,906 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 20:23:51,907 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035379145]
[2020-08-21 20:23:51,907 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 20:23:51,907 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-21 20:23:51,907 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854985665]
[2020-08-21 20:23:51,908 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-21 20:23:51,908 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 20:23:51,908 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-21 20:23:51,909 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-08-21 20:23:51,909 INFO  L87              Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 8 states.
[2020-08-21 20:23:52,317 WARN  L193               SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 20:23:53,895 WARN  L193               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 20:23:54,216 WARN  L193               SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 20:23:54,449 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188
[2020-08-21 20:23:54,821 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186
[2020-08-21 20:23:55,170 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 20:23:55,171 INFO  L93              Difference]: Finished difference Result 348 states and 456 transitions.
[2020-08-21 20:23:55,173 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-08-21 20:23:55,173 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 70
[2020-08-21 20:23:55,174 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 20:23:55,178 INFO  L225             Difference]: With dead ends: 348
[2020-08-21 20:23:55,178 INFO  L226             Difference]: Without dead ends: 256
[2020-08-21 20:23:55,180 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2020-08-21 20:23:55,180 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 256 states.
[2020-08-21 20:23:55,245 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208.
[2020-08-21 20:23:55,246 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 208 states.
[2020-08-21 20:23:55,248 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions.
[2020-08-21 20:23:55,248 INFO  L78                 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 70
[2020-08-21 20:23:55,249 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 20:23:55,249 INFO  L479      AbstractCegarLoop]: Abstraction has 208 states and 250 transitions.
[2020-08-21 20:23:55,249 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-21 20:23:55,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions.
[2020-08-21 20:23:55,253 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2020-08-21 20:23:55,253 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 20:23:55,253 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]
[2020-08-21 20:23:55,254 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-21 20:23:55,254 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 20:23:55,254 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 20:23:55,254 INFO  L82        PathProgramCache]: Analyzing trace with hash -1700935146, now seen corresponding path program 1 times
[2020-08-21 20:23:55,255 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 20:23:55,255 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985379622]
[2020-08-21 20:23:55,255 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 20:23:55,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-21 20:23:55,323 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-21 20:23:55,324 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-21 20:23:55,328 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-21 20:23:55,350 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:23:55 BoogieIcfgContainer
[2020-08-21 20:23:55,350 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-21 20:23:55,352 INFO  L168              Benchmark]: Toolchain (without parser) took 12442.37 ms. Allocated memory was 137.9 MB in the beginning and 427.8 MB in the end (delta: 289.9 MB). Free memory was 99.7 MB in the beginning and 84.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 305.3 MB. Max. memory is 7.1 GB.
[2020-08-21 20:23:55,353 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-08-21 20:23:55,354 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 645.41 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 167.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB.
[2020-08-21 20:23:55,355 INFO  L168              Benchmark]: Boogie Preprocessor took 104.25 ms. Allocated memory is still 200.8 MB. Free memory was 167.7 MB in the beginning and 163.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
[2020-08-21 20:23:55,356 INFO  L168              Benchmark]: RCFGBuilder took 1142.36 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 163.5 MB in the beginning and 193.2 MB in the end (delta: -29.7 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB.
[2020-08-21 20:23:55,356 INFO  L168              Benchmark]: TraceAbstraction took 10545.45 ms. Allocated memory was 231.2 MB in the beginning and 427.8 MB in the end (delta: 196.6 MB). Free memory was 193.2 MB in the beginning and 84.3 MB in the end (delta: 108.9 MB). Peak memory consumption was 305.5 MB. Max. memory is 7.1 GB.
[2020-08-21 20:23:55,360 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 645.41 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 167.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 104.25 ms. Allocated memory is still 200.8 MB. Free memory was 167.7 MB in the beginning and 163.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 1142.36 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 163.5 MB in the beginning and 193.2 MB in the end (delta: -29.7 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 10545.45 ms. Allocated memory was 231.2 MB in the beginning and 427.8 MB in the end (delta: 196.6 MB). Free memory was 193.2 MB in the beginning and 84.3 MB in the end (delta: 108.9 MB). Peak memory consumption was 305.5 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 598]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L209]              static struct __ACC__ERR *head  =    (struct __ACC__ERR *)0;
[L415]              int pumpRunning  =    0;
[L416]              int systemActive  =    1;
[L672]              int waterLevel  =    1;
[L673]              int methaneLevelCritical  =    0;
[L761]              int cleanupTimeShifts  =    4;
[L837]              int retValue_acc ;
[L838]              int tmp ;
[L842]  FCALL       select_helpers()
[L843]  FCALL       select_features()
[L844]  CALL, EXPR  valid_product()
[L920]              int retValue_acc ;
[L923]              retValue_acc = 1
[L924]              return (retValue_acc);
[L844]  RET, EXPR   valid_product()
[L844]              tmp = valid_product()
[L846]  COND TRUE   \read(tmp)
[L848]  FCALL       setup()
[L849]  CALL        runTest()
[L828]  CALL        test()
[L607]              int splverifierCounter ;
[L608]              int tmp ;
[L609]              int tmp___0 ;
[L610]              int tmp___1 ;
[L611]              int tmp___2 ;
[L614]              splverifierCounter = 0
[L616]  COND TRUE   1
[L618]  COND TRUE   splverifierCounter < 4
[L624]              tmp = __VERIFIER_nondet_int()
[L626]  COND TRUE   \read(tmp)
[L628]  CALL        waterRise()
[L690]  COND TRUE   waterLevel < 2
[L691]              waterLevel = waterLevel + 1
[L628]  RET         waterRise()
[L634]              tmp___0 = __VERIFIER_nondet_int()
[L636]  COND FALSE  !(\read(tmp___0))
[L644]              tmp___2 = __VERIFIER_nondet_int()
[L646]  COND TRUE   \read(tmp___2)
[L659]  CALL        timeShift()
[L423]  COND FALSE  !(\read(pumpRunning))
[L430]  COND TRUE   \read(systemActive)
[L432]  CALL        processEnvironment()
[L478]              int tmp ;
[L481]  COND FALSE  !(\read(pumpRunning))
[L496]  CALL        processEnvironment__wrappee__lowWaterSensor()
[L452]              int tmp ;
[L455]  COND FALSE  !(\read(pumpRunning))
[L470]  FCALL       processEnvironment__wrappee__base()
[L496]  RET         processEnvironment__wrappee__lowWaterSensor()
[L432]  RET         processEnvironment()
[L438]  CALL        __utac_acc__Specification3_spec__1()
[L861]              int tmp ;
[L862]              int tmp___0 ;
[L863]              int tmp___1 ;
[L867]  CALL, EXPR  isMethaneLevelCritical()
[L711]              int retValue_acc ;
[L714]              retValue_acc = methaneLevelCritical
[L715]              return (retValue_acc);
[L867]  RET, EXPR   isMethaneLevelCritical()
[L867]              tmp = isMethaneLevelCritical()
[L869]  COND FALSE  !(\read(tmp))
[L873]  CALL, EXPR  getWaterLevel()
[L743]              int retValue_acc ;
[L746]              retValue_acc = waterLevel
[L747]              return (retValue_acc);
[L873]  RET, EXPR   getWaterLevel()
[L873]              tmp___0 = getWaterLevel()
[L875]  COND TRUE   tmp___0 == 2
[L877]  CALL, EXPR  isPumpRunning()
[L530]              int retValue_acc ;
[L533]              retValue_acc = pumpRunning
[L534]              return (retValue_acc);
[L877]  RET, EXPR   isPumpRunning()
[L877]              tmp___1 = isPumpRunning()
[L879]  COND FALSE  !(\read(tmp___1))
[L883]  CALL        __automaton_fail()
[L598]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 38 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 437 SDtfs, 581 SDslu, 236 SDs, 0 SdLazy, 1451 SolverSat, 331 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred 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, 4 MinimizatonAttempts, 130 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 63992 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...