/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:02:20,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:02:20,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:02:20,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:02:20,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:02:20,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:02:21,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:02:21,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:02:21,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:02:21,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:02:21,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:02:21,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:02:21,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:02:21,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:02:21,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:02:21,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:02:21,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:02:21,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:02:21,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:02:21,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:02:21,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:02:21,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:02:21,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:02:21,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:02:21,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:02:21,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:02:21,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:02:21,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:02:21,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:02:21,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:02:21,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:02:21,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:02:21,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:02:21,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:02:21,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:02:21,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:02:21,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:02:21,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:02:21,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:02:21,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:02:21,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:02:21,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:02:21,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:02:21,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:02:21,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:02:21,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:02:21,109 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:02:21,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:02:21,110 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:02:21,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:02:21,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:02:21,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:02:21,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:02:21,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:02:21,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:02:21,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:02:21,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:02:21,113 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:02:21,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:02:21,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:02:21,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:02:21,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:02:21,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:02:21,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:02:21,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:02:21,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:02:21,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:02:21,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:02:21,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:02:21,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:02:21,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:02:21,116 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 -> false [2020-09-21 10:02:21,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:02:21,612 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:02:21,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:02:21,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:02:21,619 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:02:21,620 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-09-21 10:02:21,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/842a3697c/ab15643f2bfe42caba41674ba7a8f6de/FLAGc36171ebe [2020-09-21 10:02:22,305 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:02:22,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-09-21 10:02:22,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/842a3697c/ab15643f2bfe42caba41674ba7a8f6de/FLAGc36171ebe [2020-09-21 10:02:22,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/842a3697c/ab15643f2bfe42caba41674ba7a8f6de [2020-09-21 10:02:22,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:02:22,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:02:22,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:02:22,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:02:22,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:02:22,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:02:22" (1/1) ... [2020-09-21 10:02:22,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e33fb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:22, skipping insertion in model container [2020-09-21 10:02:22,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:02:22" (1/1) ... [2020-09-21 10:02:22,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:02:22,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:02:23,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:02:23,221 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:02:23,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:02:23,360 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:02:23,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:23 WrapperNode [2020-09-21 10:02:23,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:02:23,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:02:23,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:02:23,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:02:23,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:23" (1/1) ... [2020-09-21 10:02:23,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:23" (1/1) ... [2020-09-21 10:02:23,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:23" (1/1) ... [2020-09-21 10:02:23,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:23" (1/1) ... [2020-09-21 10:02:23,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:23" (1/1) ... [2020-09-21 10:02:23,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:23" (1/1) ... [2020-09-21 10:02:23,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:23" (1/1) ... [2020-09-21 10:02:23,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:02:23,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:02:23,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:02:23,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:02:23,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:02:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:02:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:02:23,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:02:23,597 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:02:23,597 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:02:23,597 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:02:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:02:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:02:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:02:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:02:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 10:02:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:02:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:02:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:02:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:02:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:02:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:02:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:02:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:02:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:02:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:02:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 10:02:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 10:02:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:02:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:02:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:02:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:02:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:02:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:02:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:02:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:02:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 10:02:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:02:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:02:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:02:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:02:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:02:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:02:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:02:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:02:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:02:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:02:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:02:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:02:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:02:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:02:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:02:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:02:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:02:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:02:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:02:23,605 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:02:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 10:02:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:02:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:02:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:02:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:02:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:02:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:02:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 10:02:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:02:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 10:02:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:02:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:02:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:02:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 10:02:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 10:02:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:02:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:02:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:02:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:02:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:02:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:02:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:02:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:02:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:02:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:02:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:02:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:02:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:02:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:02:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:02:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:02:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:02:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:02:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:02:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:02:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:02:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:02:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:02:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:02:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:02:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:02:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:02:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:02:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:02:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:02:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:02:26,917 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:02:26,917 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:02:26,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:02:26 BoogieIcfgContainer [2020-09-21 10:02:26,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:02:26,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:02:26,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:02:26,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:02:26,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:02:22" (1/3) ... [2020-09-21 10:02:26,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3042dbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:02:26, skipping insertion in model container [2020-09-21 10:02:26,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:02:23" (2/3) ... [2020-09-21 10:02:26,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3042dbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:02:26, skipping insertion in model container [2020-09-21 10:02:26,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:02:26" (3/3) ... [2020-09-21 10:02:26,941 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-09-21 10:02:26,954 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:02:26,968 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:02:26,992 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:02:27,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:02:27,025 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:02:27,025 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:02:27,025 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:02:27,025 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:02:27,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:02:27,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:02:27,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:02:27,054 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-09-21 10:02:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 10:02:27,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:27,067 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] [2020-09-21 10:02:27,068 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:27,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:27,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1875422794, now seen corresponding path program 1 times [2020-09-21 10:02:27,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:27,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573405896] [2020-09-21 10:02:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:27,769 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:27,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:27,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:27,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:27,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:02:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:27,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:02:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:27,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573405896] [2020-09-21 10:02:27,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:27,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:02:27,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905204824] [2020-09-21 10:02:27,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:02:27,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:27,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:02:27,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:02:27,930 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2020-09-21 10:02:29,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:29,249 INFO L93 Difference]: Finished difference Result 320 states and 417 transitions. [2020-09-21 10:02:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:02:29,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 10:02:29,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:29,288 INFO L225 Difference]: With dead ends: 320 [2020-09-21 10:02:29,289 INFO L226 Difference]: Without dead ends: 173 [2020-09-21 10:02:29,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:02:29,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-21 10:02:29,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2020-09-21 10:02:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-21 10:02:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-09-21 10:02:29,490 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2020-09-21 10:02:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:29,491 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-09-21 10:02:29,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:02:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-09-21 10:02:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 10:02:29,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:29,495 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] [2020-09-21 10:02:29,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:02:29,496 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:29,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:29,497 INFO L82 PathProgramCache]: Analyzing trace with hash -2108875382, now seen corresponding path program 1 times [2020-09-21 10:02:29,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:29,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134389355] [2020-09-21 10:02:29,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,836 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:29,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:02:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:02:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:29,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134389355] [2020-09-21 10:02:29,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:29,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:02:29,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579316965] [2020-09-21 10:02:29,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:02:29,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:29,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:02:29,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:02:29,896 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 4 states. [2020-09-21 10:02:30,437 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:31,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:31,308 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2020-09-21 10:02:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:02:31,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 10:02:31,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:31,312 INFO L225 Difference]: With dead ends: 243 [2020-09-21 10:02:31,312 INFO L226 Difference]: Without dead ends: 157 [2020-09-21 10:02:31,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:02:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-21 10:02:31,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2020-09-21 10:02:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-21 10:02:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-09-21 10:02:31,361 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2020-09-21 10:02:31,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:31,362 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-09-21 10:02:31,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:02:31,362 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-09-21 10:02:31,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:02:31,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:31,365 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] [2020-09-21 10:02:31,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:02:31,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:31,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:31,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2135499519, now seen corresponding path program 1 times [2020-09-21 10:02:31,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:31,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530524036] [2020-09-21 10:02:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:31,773 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:31,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:31,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:31,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:31,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:31,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:02:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:31,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:02:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:31,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530524036] [2020-09-21 10:02:31,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:31,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:02:31,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940043130] [2020-09-21 10:02:31,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:02:31,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:31,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:02:31,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:02:31,883 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 8 states. [2020-09-21 10:02:32,395 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:32,765 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:33,072 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:33,338 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:34,153 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:36,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:36,230 INFO L93 Difference]: Finished difference Result 442 states and 547 transitions. [2020-09-21 10:02:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:02:36,237 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-21 10:02:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:36,242 INFO L225 Difference]: With dead ends: 442 [2020-09-21 10:02:36,242 INFO L226 Difference]: Without dead ends: 337 [2020-09-21 10:02:36,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:02:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-09-21 10:02:36,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2020-09-21 10:02:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-21 10:02:36,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2020-09-21 10:02:36,316 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 328 transitions. Word has length 52 [2020-09-21 10:02:36,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:36,316 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 328 transitions. [2020-09-21 10:02:36,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:02:36,316 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 328 transitions. [2020-09-21 10:02:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:02:36,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:36,319 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] [2020-09-21 10:02:36,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:02:36,320 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:36,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:36,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1973278076, now seen corresponding path program 1 times [2020-09-21 10:02:36,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:36,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962271791] [2020-09-21 10:02:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:36,689 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:36,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:36,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:36,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:36,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:02:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:02:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:36,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:02:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:36,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962271791] [2020-09-21 10:02:36,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:36,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:02:36,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207381224] [2020-09-21 10:02:36,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:02:36,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:36,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:02:36,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:02:36,810 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 8 states. [2020-09-21 10:02:37,307 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:38,561 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:38,978 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:39,354 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:39,730 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:40,290 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:41,519 INFO L93 Difference]: Finished difference Result 877 states and 1135 transitions. [2020-09-21 10:02:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:02:41,520 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 10:02:41,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:41,526 INFO L225 Difference]: With dead ends: 877 [2020-09-21 10:02:41,526 INFO L226 Difference]: Without dead ends: 629 [2020-09-21 10:02:41,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:02:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-09-21 10:02:41,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 499. [2020-09-21 10:02:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-09-21 10:02:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 606 transitions. [2020-09-21 10:02:41,647 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 606 transitions. Word has length 57 [2020-09-21 10:02:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:41,647 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 606 transitions. [2020-09-21 10:02:41,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:02:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 606 transitions. [2020-09-21 10:02:41,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 10:02:41,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:41,652 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] [2020-09-21 10:02:41,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:02:41,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:41,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:41,652 INFO L82 PathProgramCache]: Analyzing trace with hash -820899264, now seen corresponding path program 1 times [2020-09-21 10:02:41,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:41,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442447067] [2020-09-21 10:02:41,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:42,086 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:42,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:42,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:42,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:42,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:42,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:42,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:42,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:02:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:02:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:42,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 10:02:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:42,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442447067] [2020-09-21 10:02:42,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:42,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:02:42,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55392909] [2020-09-21 10:02:42,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:02:42,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:42,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:02:42,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:02:42,229 INFO L87 Difference]: Start difference. First operand 499 states and 606 transitions. Second operand 9 states. [2020-09-21 10:02:42,729 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:43,913 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:44,283 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:44,600 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:02:45,371 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:45,770 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:47,034 INFO L93 Difference]: Finished difference Result 1401 states and 1876 transitions. [2020-09-21 10:02:47,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 10:02:47,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-21 10:02:47,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:47,042 INFO L225 Difference]: With dead ends: 1401 [2020-09-21 10:02:47,042 INFO L226 Difference]: Without dead ends: 926 [2020-09-21 10:02:47,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:02:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-09-21 10:02:47,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 739. [2020-09-21 10:02:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-09-21 10:02:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 907 transitions. [2020-09-21 10:02:47,186 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 907 transitions. Word has length 61 [2020-09-21 10:02:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:47,187 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 907 transitions. [2020-09-21 10:02:47,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:02:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 907 transitions. [2020-09-21 10:02:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 10:02:47,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:47,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:47,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:02:47,191 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:47,191 INFO L82 PathProgramCache]: Analyzing trace with hash 16386475, now seen corresponding path program 1 times [2020-09-21 10:02:47,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:47,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310400566] [2020-09-21 10:02:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,490 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:47,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:02:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:02:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:02:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:47,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310400566] [2020-09-21 10:02:47,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:47,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:02:47,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036952263] [2020-09-21 10:02:47,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:02:47,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:47,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:02:47,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:02:47,651 INFO L87 Difference]: Start difference. First operand 739 states and 907 transitions. Second operand 9 states. [2020-09-21 10:02:48,972 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:49,268 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:02:49,593 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:49,893 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:51,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:51,110 INFO L93 Difference]: Finished difference Result 1717 states and 2277 transitions. [2020-09-21 10:02:51,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:02:51,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-09-21 10:02:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:51,123 INFO L225 Difference]: With dead ends: 1717 [2020-09-21 10:02:51,124 INFO L226 Difference]: Without dead ends: 1002 [2020-09-21 10:02:51,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:02:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-09-21 10:02:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 765. [2020-09-21 10:02:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-09-21 10:02:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 935 transitions. [2020-09-21 10:02:51,302 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 935 transitions. Word has length 84 [2020-09-21 10:02:51,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:51,302 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 935 transitions. [2020-09-21 10:02:51,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:02:51,303 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 935 transitions. [2020-09-21 10:02:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 10:02:51,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:51,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:51,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:02:51,308 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:51,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:51,308 INFO L82 PathProgramCache]: Analyzing trace with hash 39018729, now seen corresponding path program 1 times [2020-09-21 10:02:51,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:51,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037234693] [2020-09-21 10:02:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,639 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:51,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:02:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:02:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:02:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:51,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037234693] [2020-09-21 10:02:51,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:51,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 10:02:51,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725436214] [2020-09-21 10:02:51,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:02:51,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:51,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:02:51,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:02:51,814 INFO L87 Difference]: Start difference. First operand 765 states and 935 transitions. Second operand 11 states. [2020-09-21 10:02:52,505 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:52,805 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:53,116 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:53,993 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:54,326 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:54,625 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:02:56,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:02:56,061 INFO L93 Difference]: Finished difference Result 1771 states and 2388 transitions. [2020-09-21 10:02:56,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:02:56,062 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-09-21 10:02:56,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:02:56,069 INFO L225 Difference]: With dead ends: 1771 [2020-09-21 10:02:56,069 INFO L226 Difference]: Without dead ends: 1030 [2020-09-21 10:02:56,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:02:56,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-21 10:02:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 781. [2020-09-21 10:02:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2020-09-21 10:02:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 951 transitions. [2020-09-21 10:02:56,228 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 951 transitions. Word has length 84 [2020-09-21 10:02:56,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:02:56,229 INFO L479 AbstractCegarLoop]: Abstraction has 781 states and 951 transitions. [2020-09-21 10:02:56,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:02:56,229 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 951 transitions. [2020-09-21 10:02:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 10:02:56,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:02:56,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:02:56,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:02:56,233 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:02:56,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:02:56,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1064510728, now seen corresponding path program 1 times [2020-09-21 10:02:56,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:02:56,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353744215] [2020-09-21 10:02:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:02:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,608 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:02:56,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:02:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:02:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:02:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:02:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:02:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 10:02:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:02:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:02:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:02:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:02:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:02:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:02:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:02:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:02:56,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353744215] [2020-09-21 10:02:56,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:02:56,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:02:56,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140268119] [2020-09-21 10:02:56,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:02:56,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:02:56,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:02:56,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:02:56,763 INFO L87 Difference]: Start difference. First operand 781 states and 951 transitions. Second operand 7 states. [2020-09-21 10:02:57,283 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:02:57,900 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:03:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:03:00,884 INFO L93 Difference]: Finished difference Result 2699 states and 3665 transitions. [2020-09-21 10:03:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:03:00,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-09-21 10:03:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:03:00,897 INFO L225 Difference]: With dead ends: 2699 [2020-09-21 10:03:00,898 INFO L226 Difference]: Without dead ends: 1942 [2020-09-21 10:03:00,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:03:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2020-09-21 10:03:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1619. [2020-09-21 10:03:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2020-09-21 10:03:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 1989 transitions. [2020-09-21 10:03:01,282 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 1989 transitions. Word has length 84 [2020-09-21 10:03:01,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:03:01,284 INFO L479 AbstractCegarLoop]: Abstraction has 1619 states and 1989 transitions. [2020-09-21 10:03:01,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:03:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 1989 transitions. [2020-09-21 10:03:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 10:03:01,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:03:01,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:03:01,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:03:01,287 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:03:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:03:01,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1546821858, now seen corresponding path program 1 times [2020-09-21 10:03:01,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:03:01,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665971787] [2020-09-21 10:03:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:03:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:03:01,377 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:03:01,378 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:03:01,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:03:01,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:03:01 BoogieIcfgContainer [2020-09-21 10:03:01,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:03:01,428 INFO L168 Benchmark]: Toolchain (without parser) took 38832.09 ms. Allocated memory was 143.1 MB in the beginning and 634.4 MB in the end (delta: 491.3 MB). Free memory was 104.4 MB in the beginning and 122.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 472.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:03:01,429 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-21 10:03:01,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.66 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 103.5 MB in the beginning and 173.7 MB in the end (delta: -70.2 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:03:01,441 INFO L168 Benchmark]: Boogie Preprocessor took 139.37 ms. Allocated memory is still 205.5 MB. Free memory was 173.7 MB in the beginning and 170.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:03:01,442 INFO L168 Benchmark]: RCFGBuilder took 3427.48 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 170.0 MB in the beginning and 188.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:03:01,443 INFO L168 Benchmark]: TraceAbstraction took 34494.94 ms. Allocated memory was 233.8 MB in the beginning and 634.4 MB in the end (delta: 400.6 MB). Free memory was 187.3 MB in the beginning and 122.9 MB in the end (delta: 64.4 MB). Peak memory consumption was 464.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:03:01,450 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 143.1 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 757.66 ms. Allocated memory was 143.1 MB in the beginning and 205.5 MB in the end (delta: 62.4 MB). Free memory was 103.5 MB in the beginning and 173.7 MB in the end (delta: -70.2 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.37 ms. Allocated memory is still 205.5 MB. Free memory was 173.7 MB in the beginning and 170.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3427.48 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 170.0 MB in the beginning and 188.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34494.94 ms. Allocated memory was 233.8 MB in the beginning and 634.4 MB in the end (delta: 400.6 MB). Free memory was 187.3 MB in the beginning and 122.9 MB in the end (delta: 64.4 MB). Peak memory consumption was 464.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 383]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L458] int cleanupTimeShifts = 4; [L752] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L534] int retValue_acc ; [L535] int tmp ; [L539] FCALL select_helpers() [L540] FCALL select_features() [L541] CALL, EXPR valid_product() [L975] int retValue_acc ; [L978] retValue_acc = 1 [L979] return (retValue_acc); [L541] RET, EXPR valid_product() [L541] tmp = valid_product() [L543] COND TRUE \read(tmp) [L545] FCALL setup() [L546] CALL runTest() [L525] CALL test() [L390] int splverifierCounter ; [L391] int tmp ; [L392] int tmp___0 ; [L393] int tmp___1 ; [L394] int tmp___2 ; [L397] splverifierCounter = 0 [L399] COND TRUE 1 [L401] COND TRUE splverifierCounter < 4 [L407] tmp = __VERIFIER_nondet_int() [L409] COND TRUE \read(tmp) [L411] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L411] RET waterRise() [L417] tmp___0 = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp___0) [L421] CALL changeMethaneLevel() [L78] COND FALSE !(\read(methaneLevelCritical)) [L81] methaneLevelCritical = 1 [L421] RET changeMethaneLevel() [L427] tmp___2 = __VERIFIER_nondet_int() [L429] COND FALSE !(\read(tmp___2)) [L435] tmp___1 = __VERIFIER_nondet_int() [L437] COND FALSE !(\read(tmp___1)) [L446] CALL timeShift() [L166] COND FALSE !(\read(pumpRunning)) [L173] COND TRUE \read(systemActive) [L175] CALL processEnvironment() [L221] int tmp ; [L224] COND FALSE !(\read(pumpRunning)) [L239] CALL processEnvironment__wrappee__highWaterSensor() [L195] int tmp ; [L198] COND TRUE ! pumpRunning [L200] CALL, EXPR isHighWaterLevel() [L318] int retValue_acc ; [L319] int tmp ; [L320] int tmp___0 ; [L324] CALL, EXPR isHighWaterSensorDry() [L128] int retValue_acc ; [L131] COND FALSE !(waterLevel < 2) [L135] retValue_acc = 0 [L136] return (retValue_acc); [L324] RET, EXPR isHighWaterSensorDry() [L324] tmp = isHighWaterSensorDry() [L326] COND FALSE !(\read(tmp)) [L329] tmp___0 = 1 [L331] retValue_acc = tmp___0 [L332] return (retValue_acc); [L200] RET, EXPR isHighWaterLevel() [L200] tmp = isHighWaterLevel() [L202] COND TRUE \read(tmp) [L204] CALL activatePump() [L249] pumpRunning = 1 [L204] RET activatePump() [L239] RET processEnvironment__wrappee__highWaterSensor() [L175] RET processEnvironment() [L181] CALL __utac_acc__Specification1_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L563] RET, EXPR isMethaneLevelCritical() [L563] tmp = isMethaneLevelCritical() [L565] COND TRUE \read(tmp) [L567] CALL, EXPR isPumpRunning() [L273] int retValue_acc ; [L276] retValue_acc = pumpRunning [L277] return (retValue_acc); [L567] RET, EXPR isPumpRunning() [L567] tmp___0 = isPumpRunning() [L569] COND TRUE \read(tmp___0) [L571] CALL __automaton_fail() [L383] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 28.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1022 SDtfs, 1814 SDslu, 1119 SDs, 0 SdLazy, 5448 SolverSat, 1164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1619occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1254 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 603 NumberOfCodeBlocks, 603 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 150948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...