/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:18:31,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:18:31,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:18:31,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:18:31,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:18:31,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:18:31,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:18:31,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:18:31,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:18:31,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:18:31,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:18:31,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:18:31,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:18:31,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:18:31,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:18:31,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:18:31,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:18:31,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:18:31,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:18:31,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:18:31,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:18:31,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:18:31,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:18:31,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:18:31,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:18:31,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:18:31,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:18:31,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:18:31,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:18:31,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:18:31,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:18:31,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:18:31,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:18:31,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:18:31,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:18:31,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:18:31,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:18:31,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:18:31,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:18:31,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:18:31,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:18:31,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:18:31,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:18:31,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:18:31,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:18:31,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:18:31,490 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:18:31,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:18:31,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:18:31,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:18:31,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:18:31,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:18:31,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:18:31,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:18:31,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:18:31,494 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:18:31,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:18:31,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:18:31,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:18:31,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:18:31,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:18:31,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:18:31,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:18:31,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:18:31,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:18:31,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:18:31,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:18:31,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:18:31,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:18:31,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:18:31,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:18:31,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 10:18:31,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:18:31,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:18:31,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:18:31,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:18:31,858 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:18:31,859 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-18 10:18:31,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/727952b05/c33c16701e284e63a8dfd9cd7a4fcbf2/FLAG3babaf433 [2020-08-18 10:18:32,463 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:18:32,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-18 10:18:32,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/727952b05/c33c16701e284e63a8dfd9cd7a4fcbf2/FLAG3babaf433 [2020-08-18 10:18:32,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/727952b05/c33c16701e284e63a8dfd9cd7a4fcbf2 [2020-08-18 10:18:32,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:18:32,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:18:32,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:18:32,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:18:32,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:18:32,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:18:32" (1/1) ... [2020-08-18 10:18:32,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:32, skipping insertion in model container [2020-08-18 10:18:32,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:18:32" (1/1) ... [2020-08-18 10:18:32,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:18:32,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:18:33,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:18:33,328 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:18:33,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:18:33,465 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:18:33,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:33 WrapperNode [2020-08-18 10:18:33,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:18:33,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:18:33,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:18:33,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:18:33,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:33" (1/1) ... [2020-08-18 10:18:33,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:33" (1/1) ... [2020-08-18 10:18:33,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:33" (1/1) ... [2020-08-18 10:18:33,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:33" (1/1) ... [2020-08-18 10:18:33,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:33" (1/1) ... [2020-08-18 10:18:33,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:33" (1/1) ... [2020-08-18 10:18:33,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:33" (1/1) ... [2020-08-18 10:18:33,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:18:33,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:18:33,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:18:33,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:18:33,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:18:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:18:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:18:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:18:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 10:18:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:18:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:18:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:18:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:18:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:18:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:18:33,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:18:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:18:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:18:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:18:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:18:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:18:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:18:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:18:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:18:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 10:18:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:18:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:18:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:18:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:18:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:18:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:18:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:18:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:18:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:18:33,651 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:18:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:18:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:18:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:18:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:18:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:18:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:18:33,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:18:33,653 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:18:33,653 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:18:33,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:18:33,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:18:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:18:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:18:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:18:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:18:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:18:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:18:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 10:18:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:18:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:18:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:18:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:18:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:18:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:18:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:18:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:18:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:18:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:18:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:18:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:18:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:18:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:18:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:18:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:18:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:18:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:18:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:18:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:18:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:18:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:18:33,657 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:18:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:18:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:18:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:18:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:18:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:18:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:18:33,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:18:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:18:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:18:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:18:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:18:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:18:33,659 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:18:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:18:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:18:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:18:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:18:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:18:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 10:18:33,660 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:18:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:18:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:18:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:18:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:18:33,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:18:34,721 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:18:34,722 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:18:34,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:18:34 BoogieIcfgContainer [2020-08-18 10:18:34,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:18:34,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:18:34,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:18:34,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:18:34,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:18:32" (1/3) ... [2020-08-18 10:18:34,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80fbc93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:18:34, skipping insertion in model container [2020-08-18 10:18:34,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:33" (2/3) ... [2020-08-18 10:18:34,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80fbc93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:18:34, skipping insertion in model container [2020-08-18 10:18:34,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:18:34" (3/3) ... [2020-08-18 10:18:34,743 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-08-18 10:18:34,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:18:34,765 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:18:34,779 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:18:34,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:18:34,808 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:18:34,808 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:18:34,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:18:34,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:18:34,809 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:18:34,809 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:18:34,810 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:18:34,832 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-18 10:18:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 10:18:34,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:34,844 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] [2020-08-18 10:18:34,845 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:34,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:34,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1737906003, now seen corresponding path program 1 times [2020-08-18 10:18:34,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:34,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135837524] [2020-08-18 10:18:34,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:35,497 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:35,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:35,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:35,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:35,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:35,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:18:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:35,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:18:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:35,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135837524] [2020-08-18 10:18:35,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:35,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:18:35,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591275762] [2020-08-18 10:18:35,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:18:35,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:35,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:18:35,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:18:35,630 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-18 10:18:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:36,855 INFO L93 Difference]: Finished difference Result 329 states and 431 transitions. [2020-08-18 10:18:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:18:36,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 10:18:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:36,889 INFO L225 Difference]: With dead ends: 329 [2020-08-18 10:18:36,890 INFO L226 Difference]: Without dead ends: 177 [2020-08-18 10:18:36,894 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 [2020-08-18 10:18:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-18 10:18:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-18 10:18:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-18 10:18:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2020-08-18 10:18:36,985 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 46 [2020-08-18 10:18:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:36,986 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2020-08-18 10:18:36,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:18:36,986 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2020-08-18 10:18:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 10:18:36,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:36,990 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] [2020-08-18 10:18:36,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:18:36,990 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:36,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:36,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1744597296, now seen corresponding path program 1 times [2020-08-18 10:18:36,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:36,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682231358] [2020-08-18 10:18:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:37,303 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:37,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:37,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:37,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:37,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:37,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:37,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:18:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:37,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:18:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:37,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682231358] [2020-08-18 10:18:37,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:37,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:18:37,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95782068] [2020-08-18 10:18:37,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:18:37,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:37,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:18:37,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:18:37,366 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 4 states. [2020-08-18 10:18:37,763 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:38,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:38,680 INFO L93 Difference]: Finished difference Result 262 states and 322 transitions. [2020-08-18 10:18:38,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:18:38,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 10:18:38,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:38,685 INFO L225 Difference]: With dead ends: 262 [2020-08-18 10:18:38,685 INFO L226 Difference]: Without dead ends: 161 [2020-08-18 10:18:38,687 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 [2020-08-18 10:18:38,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-18 10:18:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-18 10:18:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-18 10:18:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-18 10:18:38,729 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 47 [2020-08-18 10:18:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:38,729 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-18 10:18:38,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:18:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-18 10:18:38,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 10:18:38,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:38,732 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] [2020-08-18 10:18:38,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:18:38,732 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:38,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:38,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1316795497, now seen corresponding path program 1 times [2020-08-18 10:18:38,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:38,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649277149] [2020-08-18 10:18:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:39,026 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:39,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:39,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:39,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:39,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:39,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:39,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:18:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:39,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:18:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:39,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649277149] [2020-08-18 10:18:39,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:39,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:18:39,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144797340] [2020-08-18 10:18:39,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:18:39,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:39,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:18:39,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:18:39,096 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 8 states. [2020-08-18 10:18:39,449 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:39,754 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:40,009 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:40,263 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:41,586 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2020-08-18 10:18:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:18:41,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 10:18:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:41,590 INFO L225 Difference]: With dead ends: 271 [2020-08-18 10:18:41,591 INFO L226 Difference]: Without dead ends: 161 [2020-08-18 10:18:41,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:18:41,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-18 10:18:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-18 10:18:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-18 10:18:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2020-08-18 10:18:41,628 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 51 [2020-08-18 10:18:41,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:41,628 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2020-08-18 10:18:41,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:18:41,629 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2020-08-18 10:18:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 10:18:41,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:41,632 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] [2020-08-18 10:18:41,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:18:41,632 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:41,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1654731465, now seen corresponding path program 1 times [2020-08-18 10:18:41,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:41,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238287986] [2020-08-18 10:18:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:41,934 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:41,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:41,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:41,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:41,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:41,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:41,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:18:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:41,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:41,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:42,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 10:18:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:42,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 10:18:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:42,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238287986] [2020-08-18 10:18:42,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:42,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:18:42,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062112906] [2020-08-18 10:18:42,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:18:42,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:42,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:18:42,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:18:42,032 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand 6 states. [2020-08-18 10:18:42,367 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:43,543 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:44,303 INFO L93 Difference]: Finished difference Result 369 states and 459 transitions. [2020-08-18 10:18:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:18:44,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-18 10:18:44,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:44,308 INFO L225 Difference]: With dead ends: 369 [2020-08-18 10:18:44,308 INFO L226 Difference]: Without dead ends: 259 [2020-08-18 10:18:44,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:18:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-18 10:18:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 218. [2020-08-18 10:18:44,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 10:18:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 248 transitions. [2020-08-18 10:18:44,364 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 248 transitions. Word has length 69 [2020-08-18 10:18:44,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:44,364 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 248 transitions. [2020-08-18 10:18:44,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:18:44,364 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 248 transitions. [2020-08-18 10:18:44,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 10:18:44,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:44,367 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] [2020-08-18 10:18:44,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:18:44,368 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:44,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1727174811, now seen corresponding path program 1 times [2020-08-18 10:18:44,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:44,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699446915] [2020-08-18 10:18:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,643 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:44,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:18:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 10:18:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 10:18:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:44,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699446915] [2020-08-18 10:18:44,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:44,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:18:44,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725619539] [2020-08-18 10:18:44,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:18:44,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:44,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:18:44,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:18:44,784 INFO L87 Difference]: Start difference. First operand 218 states and 248 transitions. Second operand 8 states. [2020-08-18 10:18:45,100 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:46,305 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:46,595 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:46,837 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:47,066 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:47,356 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:48,571 INFO L93 Difference]: Finished difference Result 649 states and 794 transitions. [2020-08-18 10:18:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:18:48,572 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-18 10:18:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:48,576 INFO L225 Difference]: With dead ends: 649 [2020-08-18 10:18:48,577 INFO L226 Difference]: Without dead ends: 455 [2020-08-18 10:18:48,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:18:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-08-18 10:18:48,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 391. [2020-08-18 10:18:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-18 10:18:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 446 transitions. [2020-08-18 10:18:48,666 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 446 transitions. Word has length 83 [2020-08-18 10:18:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:48,667 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 446 transitions. [2020-08-18 10:18:48,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:18:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 446 transitions. [2020-08-18 10:18:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 10:18:48,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:48,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:48,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:18:48,670 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:48,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:48,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1108418135, now seen corresponding path program 1 times [2020-08-18 10:18:48,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:48,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450453052] [2020-08-18 10:18:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:48,975 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:48,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:18:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 10:18:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:18:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:49,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450453052] [2020-08-18 10:18:49,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:49,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:18:49,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768457300] [2020-08-18 10:18:49,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:18:49,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:49,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:18:49,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:18:49,086 INFO L87 Difference]: Start difference. First operand 391 states and 446 transitions. Second operand 9 states. [2020-08-18 10:18:49,545 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:50,588 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:50,807 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:51,100 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:51,349 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:51,599 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:52,738 INFO L93 Difference]: Finished difference Result 494 states and 614 transitions. [2020-08-18 10:18:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 10:18:52,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-18 10:18:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:52,744 INFO L225 Difference]: With dead ends: 494 [2020-08-18 10:18:52,744 INFO L226 Difference]: Without dead ends: 491 [2020-08-18 10:18:52,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:18:52,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-08-18 10:18:52,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2020-08-18 10:18:52,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-18 10:18:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 445 transitions. [2020-08-18 10:18:52,823 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 445 transitions. Word has length 87 [2020-08-18 10:18:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:52,824 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 445 transitions. [2020-08-18 10:18:52,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:18:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 445 transitions. [2020-08-18 10:18:52,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 10:18:52,826 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:52,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:52,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:18:52,827 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:52,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:52,827 INFO L82 PathProgramCache]: Analyzing trace with hash 661895326, now seen corresponding path program 1 times [2020-08-18 10:18:52,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:52,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585930976] [2020-08-18 10:18:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,061 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:53,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:18:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:18:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:18:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:53,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585930976] [2020-08-18 10:18:53,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:53,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:18:53,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052874211] [2020-08-18 10:18:53,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:18:53,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:53,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:18:53,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:18:53,219 INFO L87 Difference]: Start difference. First operand 391 states and 445 transitions. Second operand 9 states. [2020-08-18 10:18:54,045 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:54,297 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:18:54,547 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:54,784 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:55,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:55,931 INFO L93 Difference]: Finished difference Result 862 states and 1052 transitions. [2020-08-18 10:18:55,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:18:55,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-18 10:18:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:55,936 INFO L225 Difference]: With dead ends: 862 [2020-08-18 10:18:55,936 INFO L226 Difference]: Without dead ends: 495 [2020-08-18 10:18:55,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:18:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-18 10:18:56,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 401. [2020-08-18 10:18:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-08-18 10:18:56,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 455 transitions. [2020-08-18 10:18:56,020 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 455 transitions. Word has length 88 [2020-08-18 10:18:56,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:56,021 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 455 transitions. [2020-08-18 10:18:56,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:18:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 455 transitions. [2020-08-18 10:18:56,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 10:18:56,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:56,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:56,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:18:56,023 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:56,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:56,024 INFO L82 PathProgramCache]: Analyzing trace with hash 936654940, now seen corresponding path program 1 times [2020-08-18 10:18:56,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:56,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731741068] [2020-08-18 10:18:56,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,275 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:56,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:18:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:18:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:18:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:56,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731741068] [2020-08-18 10:18:56,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:56,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 10:18:56,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920034271] [2020-08-18 10:18:56,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:18:56,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:56,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:18:56,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:18:56,414 INFO L87 Difference]: Start difference. First operand 401 states and 455 transitions. Second operand 11 states. [2020-08-18 10:18:56,986 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:57,233 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:57,556 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:58,363 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:58,620 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:58,855 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:19:00,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:00,122 INFO L93 Difference]: Finished difference Result 886 states and 1094 transitions. [2020-08-18 10:19:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:19:00,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-18 10:19:00,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:00,129 INFO L225 Difference]: With dead ends: 886 [2020-08-18 10:19:00,129 INFO L226 Difference]: Without dead ends: 509 [2020-08-18 10:19:00,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:19:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-18 10:19:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 409. [2020-08-18 10:19:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-08-18 10:19:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 463 transitions. [2020-08-18 10:19:00,215 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 463 transitions. Word has length 88 [2020-08-18 10:19:00,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:00,216 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 463 transitions. [2020-08-18 10:19:00,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:19:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 463 transitions. [2020-08-18 10:19:00,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 10:19:00,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:00,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:00,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:19:00,223 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:00,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:00,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1408012101, now seen corresponding path program 1 times [2020-08-18 10:19:00,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:00,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338862641] [2020-08-18 10:19:00,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,507 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:19:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:19:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:19:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:19:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:19:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:19:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:19:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:19:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:19:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:19:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:19:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:19:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:19:00,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338862641] [2020-08-18 10:19:00,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:19:00,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:19:00,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562928076] [2020-08-18 10:19:00,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:19:00,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:19:00,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:19:00,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:19:00,647 INFO L87 Difference]: Start difference. First operand 409 states and 463 transitions. Second operand 7 states. [2020-08-18 10:19:00,984 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:19:01,474 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:19:03,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:03,754 INFO L93 Difference]: Finished difference Result 1209 states and 1542 transitions. [2020-08-18 10:19:03,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 10:19:03,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-08-18 10:19:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:03,762 INFO L225 Difference]: With dead ends: 1209 [2020-08-18 10:19:03,762 INFO L226 Difference]: Without dead ends: 824 [2020-08-18 10:19:03,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:19:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-08-18 10:19:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 725. [2020-08-18 10:19:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2020-08-18 10:19:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 857 transitions. [2020-08-18 10:19:03,910 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 857 transitions. Word has length 88 [2020-08-18 10:19:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:03,911 INFO L479 AbstractCegarLoop]: Abstraction has 725 states and 857 transitions. [2020-08-18 10:19:03,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:19:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 857 transitions. [2020-08-18 10:19:03,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 10:19:03,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:03,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:03,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:19:03,914 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:03,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:03,914 INFO L82 PathProgramCache]: Analyzing trace with hash 350479285, now seen corresponding path program 1 times [2020-08-18 10:19:03,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:03,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413783223] [2020-08-18 10:19:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:19:03,978 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:19:03,978 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:19:03,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:19:04,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:19:04 BoogieIcfgContainer [2020-08-18 10:19:04,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:19:04,027 INFO L168 Benchmark]: Toolchain (without parser) took 31268.44 ms. Allocated memory was 142.6 MB in the beginning and 617.6 MB in the end (delta: 475.0 MB). Free memory was 104.7 MB in the beginning and 192.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 386.9 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:04,028 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:19:04,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.75 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 104.5 MB in the beginning and 171.2 MB in the end (delta: -66.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:04,038 INFO L168 Benchmark]: Boogie Preprocessor took 107.91 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 166.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:04,039 INFO L168 Benchmark]: RCFGBuilder took 1156.49 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 166.7 MB in the beginning and 185.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:04,040 INFO L168 Benchmark]: TraceAbstraction took 29286.29 ms. Allocated memory was 233.3 MB in the beginning and 617.6 MB in the end (delta: 384.3 MB). Free memory was 184.2 MB in the beginning and 192.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 375.7 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:04,047 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.75 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 104.5 MB in the beginning and 171.2 MB in the end (delta: -66.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.91 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 166.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1156.49 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 166.7 MB in the beginning and 185.5 MB in the end (delta: -18.8 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29286.29 ms. Allocated memory was 233.3 MB in the beginning and 617.6 MB in the end (delta: 384.3 MB). Free memory was 184.2 MB in the beginning and 192.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 375.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L554] int pumpRunning = 0; [L555] int systemActive = 1; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; [L525] int retValue_acc ; [L526] int tmp ; [L530] FCALL select_helpers() [L531] FCALL select_features() [L532] CALL, EXPR valid_product() [L868] int retValue_acc ; [L871] retValue_acc = 1 [L872] return (retValue_acc); [L532] RET, EXPR valid_product() [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) [L536] FCALL setup() [L537] CALL runTest() [L516] CALL test() [L778] int splverifierCounter ; [L779] int tmp ; [L780] int tmp___0 ; [L781] int tmp___1 ; [L782] int tmp___2 ; [L785] splverifierCounter = 0 [L787] COND TRUE 1 [L789] COND TRUE splverifierCounter < 4 [L795] tmp = __VERIFIER_nondet_int() [L797] COND TRUE \read(tmp) [L799] CALL waterRise() [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 [L799] RET waterRise() [L805] tmp___0 = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp___0) [L809] CALL changeMethaneLevel() [L908] COND FALSE !(\read(methaneLevelCritical)) [L911] methaneLevelCritical = 1 [L809] RET changeMethaneLevel() [L815] tmp___2 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___2) [L830] CALL timeShift() [L561] COND FALSE !(\read(pumpRunning)) [L568] COND TRUE \read(systemActive) [L570] CALL processEnvironment() [L642] int tmp ; [L645] COND FALSE !(\read(pumpRunning)) [L660] CALL processEnvironment__wrappee__lowWaterSensor() [L616] int tmp ; [L619] COND FALSE !(\read(pumpRunning)) [L634] CALL processEnvironment__wrappee__highWaterSensor() [L590] int tmp ; [L593] COND TRUE ! pumpRunning [L595] CALL, EXPR isHighWaterLevel() [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L745] CALL, EXPR isHighWaterSensorDry() [L958] int retValue_acc ; [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] return (retValue_acc); [L745] RET, EXPR isHighWaterSensorDry() [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); [L595] RET, EXPR isHighWaterLevel() [L595] tmp = isHighWaterLevel() [L597] COND TRUE \read(tmp) [L599] CALL activatePump() [L670] pumpRunning = 1 [L599] RET activatePump() [L634] RET processEnvironment__wrappee__highWaterSensor() [L660] RET processEnvironment__wrappee__lowWaterSensor() [L570] RET processEnvironment() [L576] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1166 SDtfs, 2093 SDslu, 1032 SDs, 0 SdLazy, 5377 SolverSat, 1308 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 236 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=725occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 586 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 200772 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...