/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:54:23,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:54:23,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:54:23,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:54:23,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:54:23,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:54:23,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:54:23,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:54:23,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:54:23,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:54:23,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:54:23,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:54:23,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:54:23,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:54:23,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:54:23,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:54:23,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:54:23,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:54:23,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:54:23,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:54:23,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:54:23,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:54:23,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:54:23,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:54:23,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:54:23,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:54:23,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:54:23,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:54:23,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:54:23,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:54:23,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:54:23,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:54:23,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:54:23,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:54:23,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:54:23,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:54:23,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:54:23,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:54:23,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:54:23,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:54:23,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:54:23,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 17:54:23,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:54:23,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:54:23,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:54:23,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:54:23,390 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:54:23,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:54:23,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:54:23,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:54:23,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:54:23,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:54:23,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:54:23,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:54:23,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:54:23,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:54:23,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:54:23,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:54:23,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:54:23,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:54:23,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:54:23,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:54:23,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:54:23,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:54:23,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:54:23,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:54:23,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:54:23,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:54:23,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:54:23,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:54:23,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:54:23,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 17:54:23,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:54:23,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:54:23,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:54:23,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:54:23,732 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:54:23,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-08-21 17:54:23,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0b1ca045/59c52f64813f4b72bafbe38da8c71d3e/FLAG3d0f4e698 [2020-08-21 17:54:24,200 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:54:24,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-08-21 17:54:24,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0b1ca045/59c52f64813f4b72bafbe38da8c71d3e/FLAG3d0f4e698 [2020-08-21 17:54:24,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0b1ca045/59c52f64813f4b72bafbe38da8c71d3e [2020-08-21 17:54:24,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:54:24,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:54:24,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:54:24,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:54:24,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:54:24,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:54:24" (1/1) ... [2020-08-21 17:54:24,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d5ef9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:24, skipping insertion in model container [2020-08-21 17:54:24,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:54:24" (1/1) ... [2020-08-21 17:54:24,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:54:24,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:54:25,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:54:25,046 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:54:25,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:54:25,148 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:54:25,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25 WrapperNode [2020-08-21 17:54:25,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:54:25,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:54:25,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:54:25,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:54:25,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... [2020-08-21 17:54:25,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:54:25,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:54:25,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:54:25,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:54:25,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:54:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:54:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:54:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:54:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:54:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:54:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:54:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:54:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:54:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:54:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:54:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:54:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:54:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:54:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 17:54:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:54:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:54:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:54:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:54:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:54:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:54:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:54:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:54:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:54:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:54:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:54:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:54:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:54:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:54:25,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:54:25,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:54:25,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:54:25,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:54:25,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:54:25,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 17:54:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:54:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:54:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:54:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:54:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:54:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:54:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:54:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:54:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:54:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:54:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:54:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:54:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:54:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:54:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:54:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:54:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:54:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:54:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 17:54:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:54:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 17:54:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:54:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:54:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:54:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:54:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:54:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:54:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:54:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:54:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:54:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:54:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:54:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:54:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:54:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:54:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:54:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:54:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:54:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:54:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:54:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:54:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:54:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:54:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:54:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:54:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:54:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:54:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:54:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:54:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:54:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:54:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:54:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:54:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:54:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:54:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:54:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:54:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:54:28,479 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:54:28,479 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:54:28,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:54:28 BoogieIcfgContainer [2020-08-21 17:54:28,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:54:28,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:54:28,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:54:28,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:54:28,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:54:24" (1/3) ... [2020-08-21 17:54:28,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ec9122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:54:28, skipping insertion in model container [2020-08-21 17:54:28,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:54:25" (2/3) ... [2020-08-21 17:54:28,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ec9122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:54:28, skipping insertion in model container [2020-08-21 17:54:28,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:54:28" (3/3) ... [2020-08-21 17:54:28,493 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-08-21 17:54:28,503 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:54:28,511 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:54:28,524 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:54:28,548 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:54:28,549 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:54:28,549 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:54:28,549 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:54:28,549 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:54:28,550 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:54:28,550 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:54:28,550 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:54:28,571 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-08-21 17:54:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 17:54:28,581 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:28,582 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] [2020-08-21 17:54:28,582 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:28,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:28,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1779053206, now seen corresponding path program 1 times [2020-08-21 17:54:28,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:28,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984704359] [2020-08-21 17:54:28,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,231 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:29,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:54:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:54:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:29,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984704359] [2020-08-21 17:54:29,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:29,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:54:29,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787159559] [2020-08-21 17:54:29,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:54:29,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:29,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:54:29,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:54:29,347 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 3 states. [2020-08-21 17:54:30,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:30,478 INFO L93 Difference]: Finished difference Result 278 states and 364 transitions. [2020-08-21 17:54:30,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:54:30,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 17:54:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:30,496 INFO L225 Difference]: With dead ends: 278 [2020-08-21 17:54:30,496 INFO L226 Difference]: Without dead ends: 151 [2020-08-21 17:54:30,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:54:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-21 17:54:30,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-08-21 17:54:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 17:54:30,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-21 17:54:30,637 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-08-21 17:54:30,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:30,639 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-21 17:54:30,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:54:30,639 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-21 17:54:30,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 17:54:30,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:30,644 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] [2020-08-21 17:54:30,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:54:30,644 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:30,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:30,645 INFO L82 PathProgramCache]: Analyzing trace with hash 83171531, now seen corresponding path program 1 times [2020-08-21 17:54:30,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:30,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080976403] [2020-08-21 17:54:30,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:31,004 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:31,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:31,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:31,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:31,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:31,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:31,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:54:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:31,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:54:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:31,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080976403] [2020-08-21 17:54:31,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:31,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:54:31,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210190829] [2020-08-21 17:54:31,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:54:31,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:31,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:54:31,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:54:31,046 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 4 states. [2020-08-21 17:54:31,472 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:32,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:32,103 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2020-08-21 17:54:32,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:54:32,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 17:54:32,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:32,110 INFO L225 Difference]: With dead ends: 198 [2020-08-21 17:54:32,110 INFO L226 Difference]: Without dead ends: 135 [2020-08-21 17:54:32,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:54:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-21 17:54:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-08-21 17:54:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-21 17:54:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-08-21 17:54:32,159 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-08-21 17:54:32,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:32,159 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-08-21 17:54:32,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:54:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-08-21 17:54:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:54:32,167 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:32,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:32,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:54:32,168 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:32,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:32,168 INFO L82 PathProgramCache]: Analyzing trace with hash -532729622, now seen corresponding path program 1 times [2020-08-21 17:54:32,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:32,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801349585] [2020-08-21 17:54:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,493 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:54:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:54:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:32,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801349585] [2020-08-21 17:54:32,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:32,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:54:32,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528017434] [2020-08-21 17:54:32,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:54:32,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:32,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:54:32,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:54:32,576 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 8 states. [2020-08-21 17:54:32,942 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:33,230 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:33,486 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:33,696 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:34,398 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:35,712 INFO L93 Difference]: Finished difference Result 378 states and 466 transitions. [2020-08-21 17:54:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:54:35,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 17:54:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:35,718 INFO L225 Difference]: With dead ends: 378 [2020-08-21 17:54:35,719 INFO L226 Difference]: Without dead ends: 293 [2020-08-21 17:54:35,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:54:35,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-08-21 17:54:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 220. [2020-08-21 17:54:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-21 17:54:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 262 transitions. [2020-08-21 17:54:35,787 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 262 transitions. Word has length 52 [2020-08-21 17:54:35,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:35,788 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 262 transitions. [2020-08-21 17:54:35,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:54:35,788 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 262 transitions. [2020-08-21 17:54:35,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 17:54:35,790 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:35,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:54:35,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:54:35,791 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:35,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:35,791 INFO L82 PathProgramCache]: Analyzing trace with hash 692647563, now seen corresponding path program 1 times [2020-08-21 17:54:35,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:35,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934437632] [2020-08-21 17:54:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,089 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:36,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:54:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:54:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 17:54:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:36,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934437632] [2020-08-21 17:54:36,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:36,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:54:36,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893190898] [2020-08-21 17:54:36,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:54:36,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:36,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:54:36,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:54:36,205 INFO L87 Difference]: Start difference. First operand 220 states and 262 transitions. Second operand 8 states. [2020-08-21 17:54:36,608 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:37,644 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:37,918 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:38,192 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:38,408 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:38,746 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:39,441 INFO L93 Difference]: Finished difference Result 713 states and 925 transitions. [2020-08-21 17:54:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:54:39,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 17:54:39,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:39,447 INFO L225 Difference]: With dead ends: 713 [2020-08-21 17:54:39,447 INFO L226 Difference]: Without dead ends: 517 [2020-08-21 17:54:39,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 17:54:39,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-08-21 17:54:39,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 395. [2020-08-21 17:54:39,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-21 17:54:39,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 474 transitions. [2020-08-21 17:54:39,552 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 474 transitions. Word has length 57 [2020-08-21 17:54:39,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:39,552 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 474 transitions. [2020-08-21 17:54:39,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:54:39,552 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 474 transitions. [2020-08-21 17:54:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 17:54:39,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:39,558 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] [2020-08-21 17:54:39,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:54:39,558 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:39,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1256704497, now seen corresponding path program 1 times [2020-08-21 17:54:39,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:39,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951597176] [2020-08-21 17:54:39,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,881 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:39,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:54:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 17:54:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 17:54:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:40,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951597176] [2020-08-21 17:54:40,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:40,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:54:40,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466244225] [2020-08-21 17:54:40,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:54:40,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:40,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:54:40,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:54:40,015 INFO L87 Difference]: Start difference. First operand 395 states and 474 transitions. Second operand 9 states. [2020-08-21 17:54:40,449 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:41,355 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:41,645 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:41,879 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:54:42,345 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:42,619 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:43,404 INFO L93 Difference]: Finished difference Result 1150 states and 1524 transitions. [2020-08-21 17:54:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 17:54:43,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-21 17:54:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:43,412 INFO L225 Difference]: With dead ends: 1150 [2020-08-21 17:54:43,412 INFO L226 Difference]: Without dead ends: 779 [2020-08-21 17:54:43,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:54:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-08-21 17:54:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 615. [2020-08-21 17:54:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-08-21 17:54:43,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-08-21 17:54:43,545 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 61 [2020-08-21 17:54:43,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:43,545 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-08-21 17:54:43,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:54:43,546 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-08-21 17:54:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 17:54:43,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:43,548 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] [2020-08-21 17:54:43,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:54:43,548 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:43,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:43,549 INFO L82 PathProgramCache]: Analyzing trace with hash 148740965, now seen corresponding path program 1 times [2020-08-21 17:54:43,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:43,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658681787] [2020-08-21 17:54:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,780 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:43,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:54:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:54:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 17:54:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:43,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658681787] [2020-08-21 17:54:43,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:43,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:54:43,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111764340] [2020-08-21 17:54:43,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:54:43,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:43,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:54:43,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:54:43,908 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 9 states. [2020-08-21 17:54:44,323 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:54:45,211 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:45,437 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:54:45,703 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:45,948 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:47,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:47,561 INFO L93 Difference]: Finished difference Result 2147 states and 3042 transitions. [2020-08-21 17:54:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 17:54:47,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-21 17:54:47,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:47,585 INFO L225 Difference]: With dead ends: 2147 [2020-08-21 17:54:47,585 INFO L226 Difference]: Without dead ends: 1556 [2020-08-21 17:54:47,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:54:47,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2020-08-21 17:54:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1159. [2020-08-21 17:54:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-08-21 17:54:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1412 transitions. [2020-08-21 17:54:47,845 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1412 transitions. Word has length 79 [2020-08-21 17:54:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:47,846 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1412 transitions. [2020-08-21 17:54:47,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:54:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1412 transitions. [2020-08-21 17:54:47,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 17:54:47,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:47,851 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] [2020-08-21 17:54:47,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:54:47,852 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:47,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:47,852 INFO L82 PathProgramCache]: Analyzing trace with hash -2136122490, now seen corresponding path program 1 times [2020-08-21 17:54:47,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:47,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946826460] [2020-08-21 17:54:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,093 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:48,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:54:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:54:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 17:54:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:48,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946826460] [2020-08-21 17:54:48,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:48,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 17:54:48,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85241435] [2020-08-21 17:54:48,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 17:54:48,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:48,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 17:54:48,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 17:54:48,213 INFO L87 Difference]: Start difference. First operand 1159 states and 1412 transitions. Second operand 9 states. [2020-08-21 17:54:49,394 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:49,619 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:54:49,860 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:50,112 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:51,080 INFO L93 Difference]: Finished difference Result 2704 states and 3585 transitions. [2020-08-21 17:54:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:54:51,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-21 17:54:51,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:51,095 INFO L225 Difference]: With dead ends: 2704 [2020-08-21 17:54:51,095 INFO L226 Difference]: Without dead ends: 1569 [2020-08-21 17:54:51,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:54:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-08-21 17:54:51,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1199. [2020-08-21 17:54:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1199 states. [2020-08-21 17:54:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1452 transitions. [2020-08-21 17:54:51,299 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1452 transitions. Word has length 79 [2020-08-21 17:54:51,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:51,299 INFO L479 AbstractCegarLoop]: Abstraction has 1199 states and 1452 transitions. [2020-08-21 17:54:51,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 17:54:51,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1452 transitions. [2020-08-21 17:54:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 17:54:51,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:51,302 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] [2020-08-21 17:54:51,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:54:51,303 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:51,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1649371716, now seen corresponding path program 1 times [2020-08-21 17:54:51,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:51,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833878302] [2020-08-21 17:54:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,579 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:54:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:54:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:54:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:54:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:54:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:54:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 17:54:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 17:54:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:54:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:54:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:54:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:54:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 17:54:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:54:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:54:51,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833878302] [2020-08-21 17:54:51,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:54:51,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 17:54:51,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284829434] [2020-08-21 17:54:51,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 17:54:51,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:54:51,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 17:54:51,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 17:54:51,717 INFO L87 Difference]: Start difference. First operand 1199 states and 1452 transitions. Second operand 11 states. [2020-08-21 17:54:52,398 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:52,651 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:52,874 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:53,519 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:53,765 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:53,994 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:54:54,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:54:54,833 INFO L93 Difference]: Finished difference Result 2398 states and 3135 transitions. [2020-08-21 17:54:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:54:54,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-21 17:54:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:54:54,843 INFO L225 Difference]: With dead ends: 2398 [2020-08-21 17:54:54,843 INFO L226 Difference]: Without dead ends: 1223 [2020-08-21 17:54:54,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:54:54,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2020-08-21 17:54:55,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 973. [2020-08-21 17:54:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-08-21 17:54:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1148 transitions. [2020-08-21 17:54:55,006 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1148 transitions. Word has length 79 [2020-08-21 17:54:55,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:54:55,006 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1148 transitions. [2020-08-21 17:54:55,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 17:54:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1148 transitions. [2020-08-21 17:54:55,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 17:54:55,009 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:54:55,009 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] [2020-08-21 17:54:55,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:54:55,010 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:54:55,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:54:55,010 INFO L82 PathProgramCache]: Analyzing trace with hash -453271351, now seen corresponding path program 1 times [2020-08-21 17:54:55,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:54:55,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713082093] [2020-08-21 17:54:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:54:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:54:55,063 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:54:55,064 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:54:55,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:54:55,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:54:55 BoogieIcfgContainer [2020-08-21 17:54:55,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:54:55,095 INFO L168 Benchmark]: Toolchain (without parser) took 30545.35 ms. Allocated memory was 140.5 MB in the beginning and 638.1 MB in the end (delta: 497.5 MB). Free memory was 103.2 MB in the beginning and 323.9 MB in the end (delta: -220.6 MB). Peak memory consumption was 276.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:54:55,096 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 17:54:55,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.29 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.0 MB in the beginning and 173.6 MB in the end (delta: -70.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:54:55,097 INFO L168 Benchmark]: Boogie Preprocessor took 88.73 ms. Allocated memory is still 204.5 MB. Free memory was 173.6 MB in the beginning and 169.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:54:55,098 INFO L168 Benchmark]: RCFGBuilder took 3245.75 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 169.3 MB in the beginning and 196.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-21 17:54:55,099 INFO L168 Benchmark]: TraceAbstraction took 26607.96 ms. Allocated memory was 234.4 MB in the beginning and 638.1 MB in the end (delta: 403.7 MB). Free memory was 196.8 MB in the beginning and 323.9 MB in the end (delta: -127.0 MB). Peak memory consumption was 276.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:54:55,102 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 598.29 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.0 MB in the beginning and 173.6 MB in the end (delta: -70.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.73 ms. Allocated memory is still 204.5 MB. Free memory was 173.6 MB in the beginning and 169.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3245.75 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 169.3 MB in the beginning and 196.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26607.96 ms. Allocated memory was 234.4 MB in the beginning and 638.1 MB in the end (delta: 403.7 MB). Free memory was 196.8 MB in the beginning and 323.9 MB in the end (delta: -127.0 MB). Peak memory consumption was 276.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L610] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L833] int cleanupTimeShifts = 4; [L906] int retValue_acc ; [L907] int tmp ; [L911] FCALL select_helpers() [L912] FCALL select_features() [L913] CALL, EXPR valid_product() [L432] int retValue_acc ; [L435] retValue_acc = 1 [L436] return (retValue_acc); [L913] RET, EXPR valid_product() [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) [L917] FCALL setup() [L918] CALL runTest() [L900] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L269] COND FALSE !(\read(methaneLevelCritical)) [L272] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND FALSE !(\read(tmp___2)) [L380] tmp___1 = __VERIFIER_nondet_int() [L382] COND FALSE !(\read(tmp___1)) [L391] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND TRUE \read(systemActive) [L77] CALL processEnvironment() [L97] int tmp ; [L100] COND TRUE ! pumpRunning [L102] CALL, EXPR isHighWaterLevel() [L194] int retValue_acc ; [L195] int tmp ; [L196] int tmp___0 ; [L200] CALL, EXPR isHighWaterSensorDry() [L319] int retValue_acc ; [L322] COND FALSE !(waterLevel < 2) [L326] retValue_acc = 0 [L327] return (retValue_acc); [L200] RET, EXPR isHighWaterSensorDry() [L200] tmp = isHighWaterSensorDry() [L202] COND FALSE !(\read(tmp)) [L205] tmp___0 = 1 [L207] retValue_acc = tmp___0 [L208] return (retValue_acc); [L102] RET, EXPR isHighWaterLevel() [L102] tmp = isHighWaterLevel() [L104] COND TRUE \read(tmp) [L106] CALL activatePump() [L125] pumpRunning = 1 [L106] RET activatePump() [L77] RET processEnvironment() [L83] CALL __utac_acc__Specification1_spec__1() [L808] int tmp ; [L809] int tmp___0 ; [L813] CALL, EXPR isMethaneLevelCritical() [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); [L813] RET, EXPR isMethaneLevelCritical() [L813] tmp = isMethaneLevelCritical() [L815] COND TRUE \read(tmp) [L817] CALL, EXPR isPumpRunning() [L149] int retValue_acc ; [L152] retValue_acc = pumpRunning [L153] return (retValue_acc); [L817] RET, EXPR isPumpRunning() [L817] tmp___0 = isPumpRunning() [L819] COND TRUE \read(tmp___0) [L821] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 21.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 835 SDtfs, 1659 SDslu, 1101 SDs, 0 SdLazy, 4893 SolverSat, 1142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1199occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 1435 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 583 NumberOfCodeBlocks, 583 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 492 ConstructedInterpolants, 0 QuantifiedInterpolants, 143100 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...